1. Yu-ki Sugiyama, Masaki Amo, Kouta Ibe, and Sentaro Okamoto
   "Synthesis of 2-Aminopyridines via Cobalt-Catalyzed Cycloaddition of Diynes with N-Substituted and N-Unsubstituted Cyanamides",
   Adv. Synth. Catal., 2023, 365, 3897-3901. [Link]open access
   
   
2. Takeshi Yamada and Sentaro Okamoto,
   "3,5,6-Trifluoro-2-pyridone effectively catalyses interrupted Passerini reaction of 3-(2- isocyanoethyl)-indole as a bifunctional catalyst. The described one-pot four-component coupling reaction enabled the rapid preparation of highly functionalised tetracyclic furoindolines",
   Chem. Commun., 2022, 58, 11701-11704. [Link]
   
   
3. Kouta Ibe, Haruki Nakada, Mayu Ohgami, Takeshi Yamada, and Sentaro Okamoto,
   "Design, Synthesis, and Properties of des-D-Ring Interphenylene Derivatives of 1α,25-Dihydroxyvitamin D3",
   Eur. J. Med. Chem., 2022, 243, 114795. [Link]
   
   
4. Yuhsaku Okabe, Takeshi Yamada, and Sentaro Okamoto
   "Nickel-Catalysed Cycloaddition Oligomerization of 1,6-Diynes to Medium-Size Cyclic Polyenes",
   Polymer Chemistry, 2022, 13, 6075-6172. [Link]
   
   Cover Picture
5. Sentaro Okamoto, Yusuke Naito, and Ryosuke Nomura
   ”Synthesis of Folded H-Stacking Skipped p Polymers Consisting of Different 2-Substituted Trimethylene Tethering Units and Their Optical and Conductive Property",
   Polymer, 2021, 230, 124037. [Link]
   
   
6. Takeshi Yamada, Kazuki Arai, Rie Kikuchi and Sentaro Okamoto,
   "Deuteration of Indole Compounds: Synthesis of Deuterated Auxins, Indole-3-acetic Acid-d5 and Indole-3-butyric Acid-d5",
   ACS Omega, 2021, 6, 19956-19963. [Link]open access
   
7. Takeshi Yamada, Yusuke Watanabe and Sentaro Okamoto,
   "6-Halo-2-pyridone as an efficient organocatalyst for ester aminolysis",
   RSC Advances, 2021, 11, 24588-24593. [Link]open access
   
8. Sentaro Okamoto, Takeshi Yamada, Takaya Uchida, Nana Kikuta, and Yu-ya Kimura,
   "Dual-Mode Coupling Copolymerization of Aryl Dialdehyde and Alkynylaldehyde Monomers via Concurrent McMurry Olefination and Alkyne [2+2+2] Cycloaddition Trimerization Reactions Mediated by a Low-Valent Titanium Reagent",
   Polymer, 2021, 214, 123344. [Link]
   
   
9. Nana Kikuta, Takahiro SHindo, Yu-ki Sugiyma, Takeshi Yamada, Sentaro Okamoto,
   "Cobalt-Catalyzed [2 + 2 + 2] Cycloaddition Copolymerization of Diyne and Internal Alkyne Monomers to Highly Branched Polymers",
   Polymer, 2021, 212, 123133. [[Link]]
   Selected as a Significant Paper in Advances in Engineering (AIE) [AIE Link]
   

1. Kouta Ibe, Takeshi, Yamada, Sentaro Okamoto, "Synthesis and Vitamin D Receptor Affinity of 16-Oxa Vitamin D3 Analogues",
   Organic & Biomolecular Chemistry, 2019, 17, 10188-10200. [Link]
2. Sentaro Okamoto, Takeshi Yamada, Yu-ki Tanabe, Masaki Sakaia,
   "Alkyne [2+2+2] Cyclotrimerization Catalyzed by a Low-Valent Titanium Reagent Derived from CpTiX3(X = Cl, O-i-Pr), Me3SiCl, and Mg or Zn”,
   Organomettalics, 2018, 37, 4431-4438.[Link]
   
   
3. Suchithra Madhavan and Sentaro Okamoto, "Silica-supported silver as a green and sustainable catalyst for [3+2] cycloaddition reaction of azomethine ylides with 2’-hydroxychalcone derivatives”,ChemCatChem, 2018, 10, 2014-2018.[Link]
   
4. Sentaro Okamotoa, Masaru Kudo, Ryosuke Nomura, Ryota Moriai, Yusuke Naito, Shigeaki Funyu, Ken-ich Ishitsuka, Naoki Asano, "Synthesis and properties of folded π-stacking polymers having J-aggregative, alternative, and staggered assembling structures”, Polymer,2016, 97, 550-558. [Link]
   
5. Suchithra Madhavan, Hiromasa Takagi, Shunpei Fukuda and Sentaro Okamoto, "Low−valent titanium−catalyzed deprotection of allyl- and propargyl-carbamates to amines”, Tetrahedron Letters, 2016, 57, 2074-2077. [Link](Highlighted inOrganic Chemistry Portal)
   
   
6. Yu-ki Sugiyama, Shiori Heigozono, Kazuhiro Tamura, Sentaro Okamoto,
   "Iron-Catalyzed Reductive Metalation–Allylation and Metalative Cyclization of 2,3-Disubstituted Oxetanes and Their Stereoselectivity”,
   Synthesis, 2016, 48, 2823-2828.[Link]
   
7. Sentaro Okamoto,
   “Synthetic Reactions Using Low-Valent Titanium Reagents Derived from Ti(OP)4 or CpTiX3 (X = O-i-Pr or Cl) in the Presence of Me3SiCl and Mg”,
   The Chemical Record, 2016, 16, 857-872. [Link]
   
8. Yu-ki Sugiyama and Sentaro Okamoto,
   "Catalytic [2 + 2 + 2] Cycloaddition Polymerization of Diyne–Nitrile Monomers in the Presence of CoCl2-6H2O/Diphosphine/Zn”,
   J. Polym. Sci. A: Polym. Chem. 2016, 54, 345-351.[Link].
   
   

1. Kouta Ibe, Haruko Aoki, Hiromasa Takagi, Kiyohide Ken-mochi, Yu-suke Hasegawa, Naoto Hayashi, and Sentaro Okamoto, "Preparation of 2-hydroxy A-ring precursors for synthesis of vitamin D3 analogues from lyxose”,Tetrahedron Letters, 2015, 56, 2315-2318[Link].
2. Yu-ki Sugiyama, Shiori Heigozono, and Sentaro Okamoto, "Iron-Catalyzed Reductive Magnesiation of Oxetanes to Generate (3-Oxidopropyl)magnesium Reagents”, Organic Letters, 2014, 16, 6278-6281. [Link](Picked up in ChemInformand Highlighted inOrganic Chemistry Portal)
3. Kouta Ibe, Yu-suke Hasegawa, Misuzu Shibuno, Tsukasa Shishido, Yuzo Sakai, Yu Kosaki, Keisuke Susa, and Sentaro Okamoto, "Simple and practical method for selective acylation of primary hydroxy group catalyzed by N-methyl-2-phenylimidazole (Ph-NMI) or 2-phenylimidazo[2,1-b]benzothiazoles (Ph-IBT)”, Tetrahedron Lett., 2014, 55, 7039-7042.[Link](Highlighted in Organic Chemistry Portal)
4. Ryota Moriai, Yu-suke Naito, Ryosuke Nomura, Shigeaki Funyu, Ken-ich Ishitsuka, Naoki Asano and Sentaro Okamoto, "Design and synthesis of 2-(1,3-dialkoxy-2-methylpropan-2-yl)-1,3-diarylpropanes as tethering units for folded H-stacking polymers”, Tetrahedron Lett., 2014, 55, 2649-2653.[Link]
5. Sentaro Okamoto, Yuzo Sakai, Saki Watanabe, Shohei Nishi, Aya Yoneyama, Hitomi Katsumata, Yu Kosaki, Rumi Sato, Megumi Shiratori, Misuzu Shibuno, Tsukasa Shishido, "Structure–activity relationship of dihydroimidazo-, dihydropyrimido, tetrahydrodiazepino-[2,1-b]-thiazoles and -benzothiazoles as an acylation catalyst", Tetrahedron Lett., 2014, 55, 1909-1912. [Link](Picked up in ChemInform)
6. 
7. Sentaro Okamoto, "Synthetic Reactions Using A Low-Valent Titanium Reagent Ti(OR)4/Me3SiCl/Mg," Yuki Gosei Kagaku Kyoukaishi, 2014, 72, 382-392.[Link]
8. Naoto Takekoshi, Kenji Miyashita, Noriaki Shoji, and Sentaro Okamoto, "Generation of A Low-Valent Titanium from Titanatrane and Its Catalytic Reactions: Radical Ring Opening of Oxetanes", Adv. Synth. Catal. 2013, 355, 2151-2157.[Link](Picked up in ChemInform)
9. Ryosuke Nomura, Ryota Moriai, Masaru Kudo, Tohru Hoshino, Jun-ichi Watanabe, Shigeaki Funyu, Ken-ich Ishitsuka, and Sentaro Okamoto, “Synthesis and Properties of Through-Space Conjugated Polymers Based on π—π Stacked 1,3-Biarylpropane Tethering Units”, J. Polymer Science Part A: Polymer Chemistry, 2013, 51, 3412-3419. [Link]
10. Tetsuya Sakurada, Yu-ki Sugiyama, Sentaro Okamoto, “Cobalt-Catalyzed Cross Addition of Silylacetylenes to Internal Alkynes”, J. Org. Chem., 2013, 78, 3583-3591.  [Link] (Picked up in Synthetic Organic Chemistry, Jpn.)
11. Ryosuke Nomura, Yuji Tsuchiya, Hiroyuki Ishikawa, Sentaro Okamoto, “Grignard allylic substitution reaction catalyzed by 1,2,3-triazol-5-ylidene magnesium complexes”, Tetrahedron Letters, 2013, 54, 1360-1363.  [Link] (Picked up in ChemInform)
12. Sentaro Okamoto, Yu-ki Sugiyama, “From Development of Catalysts for Alkyne and Alkyne/Nitrile [2 + 2 + 2] Cycloaddition Reactions to Their Use in Polymerization Reactions,”SYNLETT, 2013, 1044-1060. (Account)[Link]
13. Yu-ki Sugiyama, Takuma Kariwa, Tetsuya Sakurada, Sentaro Okamoto, “Remarkable Activation of An Alkyne [2 + 2 + 2] Cycloaddition Catalyst, 2-Iminomethylpyridine (Dipimp)/CoCl2-6H2O/Zn, by a Phthalate Additive”, SYNLETT, 2012, 23, 2549-2553. [Link] (Picked up in ChemInform)
14. Tohru Hoshino, Jun-ichi Watanabe, Masaru Kudo, Edo Sakai, Shigeaki Funyu, Ken-ich Ishitsuka, and Sentaro Okamoto,, “Synthesis of [—CH2C(CO2Et)2CH2Ar—]n Polymers and Their Unique Optical Properties by Through-Space Interactions between Ar and C=O Groups”, J. Polymer Science Part A: Polymer Chemistry, 2012, 50, 1707-1716.  [Link]
15. Baby Viswambharan, Tatsuya Okimura, Satoko Suzuki, Sentaro Okamoto,, "Synthesis and Catalytic Properties of 4-Aryl-2,3-dihydro-4H-pyrimido[2,3-b]benzothiazoles for Asymmetric Acyl or Carboxyl Group Transfer Reactions", J. Org. Chem., 2011, 76, 6678-6685.  [Link] (Picked up in ChemInform and Highlighted in Organic Chemistry Portal)
16. Yu-ki Sugiyama, Rei Kato, Tetsuya Sakurada and Sentaro Okamoto, "Chain-Growth Cycloaddition Polymerization via a Catalytic Alkyne [2 + 2 + 2] Cyclotrimerization Reaction and Its Application to One-shot Spontaneous Block Copolymerization", J. Am. Chem. Soc., 2011, 133, 9712-9715.  [Link] (Highlighted in ACSNoteworthy Chemistry and Selected as SYNFACT of the month)
17. Tsuyoshi Kawaji, Noriaki Shoji, Kenji Miyashita, Sentaro Okamoto, "Non-Cp Titanium Alkoxide-Based Homolytic Ring-Opening of Epoxides by An Intramolecular Hydrogen Abstraction in beta-Titanoxy Radical Intermediates", Chemical Communications, 2011, 47, 7857-7859.  [Link] (Picked up in ChemInform)
18. Noriaki Shohji, Tsuyoshi Kawaji, Sentaro Okamoto, "Ti(O-i-Pr)4/Me3SiCl/Mg-Mediated Reductive Cleavage of Sulfonamides and Sulfonates To Amines and Alcohols", Organic Letters, 2011, 13, 2626-2629.  [Link] (Highlighted inOrganic Chemistry Portal, Picked up in ChemInform, and Highlighted in Organic Chemistry Highlights, Organic Chemistry HighlightsandOrganic Chemistry Highlights)
19. Yu-ki Sugiyama, Sentaro Okamoto,, "Regioselective Synthesis of Substituted Pyridines and 2,2'-Dipyridines by a Cobalt-Catalyzed [2 + 2 + 2] Cycloaddition of alfa,omega-diynes with Nitriles", Synthesis, 2011, 2247-2254. [Link] (special issue) See also the Correction: Errata (2011, 3928) (Picked up in ChemInform)

1. Sentaro Okamoto, Hiroyuki Ishikawa, Yoshimi Shibata, Yu-ichiro Suhara, "Grignard allylic substitution catalyzed by imidazol-2-ylidene- and imidazol-4-ylidene-magnesium complexes", Tetrahedron Letters, 2010, 51, 5704-5707.  [Link]
2. Jun-ichi Watanabe, Tohru Hoshino, Yu-suke Nakamura, Edo Sakai and Sentaro Okamoto, "Folded H-Stacking Polymers by Conformational Control with 2-Substituted Trimethylene Tethers", Macromolecules, 2010, 43, 6562-6569.  [Link]
3. Jun-ichi Watanabe, Yu-ki Sugiyama, Ayami Nomura, Suzumi Azumatei, Avijit Goswami, Naoko Saino, Sentaro Okamoto, "Quick Access to Diverse Polymerizable Molecules (a Monomer Library) by Catalytic [2 + 2 + 2] Cycloaddition Reactions of Functionalized Alkynes", Macromolecules, 2010, 43, 2213-2218.  [Link]
4. Naoko Saino, Tsuyoshi Kawaji, Taichi Ito, Yuko Matsushita and Sentaro Okamoto, "Synthesis of substituted anthracenes, pentaphenes and trinaphthylenes via alkyne cyclotrimerization reaction", Tetrahedron Letters, 2010, 51, 1313-1316.  [Link] (Picked up in SYNFACTS(2010, p 423)
5. Sentaro Okamoto,* Jing-Qian He, Chihaya Ohno, Yuhji Oh-iwa, and Yuhki Kawaguchi, "McMurry coupling of aryl aldehydes and imino pinacol coupling mediated by Ti(O-i-Pr)4/Me3SiCl/Mg reagent", Tetrahedron Letters, 2010, 51, 387-390.  [Link] (Picked up in SYNFACTS(2010, p 346) and ChemInform)
6. Avijit Goswami, Taichi Ito, Naoko Saino, Kouki Kase, Chikashi Matsuno and Sentaro Okamoto, "Selective Dimerization of 1,6-Diynes Catalyzed by Ionic Liquid-Supported Nickel Complexes in An Ionic Liquid/Toluene Biphasic System", Chem. Commun., 2009, 439-441.  [Link] (Picked up in SYNFACTS(2009, p 458) and ChemInform)
7. Jing-Qian He, Daisuke Shibata, Chihaya Ohno, Sentaro Okamoto, "Two-step allylic carbon insertion between ketone carbonyl and carbons giving alfa-quaternary alfa-vinyl ketones", Tetrahedron Letters, 2008, 49, 6724-6727.  [Link] (Picked up in ChemInform)
8. Akiko Tsuhako, Daisuke Oikawa, Kazushi Sakai, Sentao Okamoto, "Copper-catalyzed intramolecular hydroamination of allenylamines to 3-pyrrolines or 2-alkenylpyrrolidines", Tetrahedron Letters, 2008, 49, 6529-6532.  [Link] (Picked up in ChemInform)
9. Avijit Goswami, Kazuhiko Ohtaki, Kouki Kase, Taichi Ito, Sentaro Okamoto, “Synthesis of Substituted 2,2'-Bipyridines and 2,2':6,2"-Terpyridines by Cobalt-Catalyzed Cycloaddition Reactions of Nitriles and alfa,omega-Diynes with Exclusive Regioselectivity", Advanced Synthesis & Catalysis, 2008, 350, 143-152.  [Link] (Picked up in ChemInform)
10. Akiko Tsuhako, Jing-Qian He, Mariko Mihara, Naoko Saino and Sentaro Okamoto, "Carbonyl reduction with CaH2 and R3SiCl catalyzed by ZnCl2", Tetrahedron Letters, 2007, 47, 9120-9123.  [Link] (Picked up in ChemInform)
11. Avijit Goswami, Taichi Ito and Sentaro Okamoto, "Efficient Activation of 2-Iminomethylpyridine/Cobalt-Baesd Alkyne [2 + 2 + 2] Cycloaddition Catalyst by Addition of a Silver Salt", Advanced Synthesis & Catalysis, 2007, 349, 2368-2374.  [Link]
12. Mutsumi Ohkubo, Sayaka Mochizuki, Takeshi Sano, Yuuki Kawaguchi, Sentaro Okamoto, "Selective Cleavage of Allyl and Propargyl Ethers to Alcohols Catalyzed by Ti(O-i-Pr)4/MXn/Mg", Oragnic Letters, 2007, 9, 773-776.  [Link] (Picked up in ChemInform)
13. Kouki Kase, Avijit Goswami, Kazuhiko Ohtaki, Emi Tanabe, Naoko Saino, Sentaro Okamoto, "On-Demand Generation of an Efficient Catalyst for Pyridine Formation from Unactivated Nitriles and alfa,omega-Diynes Using CoCl2-6H2O, dppe and Zn", Organic Letters, 2007, 9, 931-934.  [Link]
14. Sentaro Okamoto, Kouici Takano, Tomohiro Ishikawa, Satoshi Ishigami and Akiko Tsuhako, "Activity and behavior of imidazolium salts as a phase transfer catalyst for a liquid-liquid phase system", Tetrahedron Letters, 2006, 47, 8055-8058.  [Link]
15. Sentaro Okamoto, Hidemoto Ito, Shogo Tanakab and Fumie Sato, "Ti(II)-Mediated domino cyclization of 2-functionalized 1-halo-2,n-enynes (n = 7, 8) to bicyclic compound", Tetrahedron Letters, 2006, 47, 7537-7540.  [Link] (Picked up in ChemInform)
16. Mutsumi Ohkubo, Daisuke Hayashi, Daisuke Oikawa, Kouki Fukuhara, Sentaro Okamoto, Fumie Sato, "Synthesis of N-substituted 2-arylpyrroles by the reaction of (eta2-imine)titanium complexes with 3,3-diethoxypropyne", Tetrahedron Letters, 2006, 47, 6209-6212.  [Link] (Picked up in SYNFACTS(2006, p.1223)
17. Mutsumi Ohkubo, Wataru Uchikawa, Hitomi Matsushita, Aiko Nakano, Takayuki Shirato and Sentaro Okamoto, "Stereoselective construction of 3a-methylhydrindanes starting from 2,7-enynol derivatives based on Ti(II)-mediated cyclization and Ru-catalyzed ring-closing metathesis", Tetrahedron Letters, 2006, 47, 5181-5185.  [Link] (Picked up in ChemInform)
18. Megumi Kobayashi and Sentaro Okamoto, "Unexpected reactivity of annulated 3H-benzothiazol-2-ylideneamines as an acyl transfer catalyst", Tetrahedron Letters, 2006, 47, 4347-4350.  [Link]
19. Naoko Saino, Daisuke Kogure, Kouki Kase and Sentaro Okamoto, "Iron-catalyzed intramolecular cyclotrimerization of triynes to annulated benzenes", J. Organometallic Chemistry, 2006, 691, 3129-3136.  [Link] (Picked up in ChemInform)
20. Naoko Saino, Fumihiro Amemiya, Emi Tanabe, Kouki Kase and Sentaro Okamoto, "A Highly Practical Instant Catalyst for Cyclotrimerization of Alkynes to Substituted Benzenes", Organic Letters, 2006, 8, 1439-1442.  [Link] (Picked up in ChemInform)
21. Akiko Kuno, Naoko Saino, Taku Kamachi, and Sentaro Okamoto, "Cobalt-catalyzed benzyl-alkynyl coupling", Tetrahedron Letters, 2006, 47, 2591-2594.  [Link] (Picked up in ChemInform) (Most Downloaded Article 2016 05 01)
22. Sentaro Okamoto, Satoshi Tominaga, Naoko Saino, Kouki Kase and Kentaro Shimoda, "Allylic Substitution Reactions with Grignard Reagents Catalyzed by Imidazolium and 4,5-Dihydroimidazolium Carbene-CuCl Complexes", J. Organometallic Chemistry, 2005, 690, 6001-6007.  [Link] See also the Correction: Erratum (2007, 692, 2114)  [Link] (Picked up in ChemInform)
23. Naoko Saino, Daisuke Kogure and Sentaro Okamoto, "Intramolecular Cyclotrimerization of Triynes Catalyzed by N-Heterocyclic Carbene-CoCl2/Zn or -FeCl3/Zn", Organic Letters, 2005, 7, 3065-3067.  [Link] (Picked up in ChemInform)
24. Toshio Aida, Norikatsu Kuboki, Kenji Kato, Wataru Uchikawa, Chikashi Matsuno and Sentaro Okamoto, "Use of CaH2 as a reductive hydride source: Reduction of ketones and imines with CaH2/ZnX2 in the presence of a Lewis acid", Tetrahedron Letters, 2005, 46, 1667-1669.  [Link] (Picked up in Best Synthetic Methods: Reduction in Organic Chemistry Highlights and Picked up in ChemInform)
25. Wataru Uchikawa, Chikashi Matsuno, and Sentaro Okamoto, "Formation of azatitanacyclopentanes from ene-imines and a Ti(O-i-Pr)4/2i-PrMgX reagent and their synthetic reactions", Tetrahedron Letters, 2004, 45, 9037-9040.  [Link] (Picked up in ChmeInform)
26. Satoshi Tominaga, Yukinao Oi, Toshio Kato, Duk Keun An and Sentaro Okamoto, "gamma-Selective allylic substitution reaction with Grignard reagents catalyzed by copper N-heterocyclic carbene complexes and its application to enantioselective synthesis", Tetrahedron Letters, 2004, 45, 5585-5588.  [Link] (Picked up in ChmeInform)
27. Taku Kamachi, Akiko Kuno, Chikashi Matsuno and Sentaro Okamoto, "Cobalt-catalyzed mono-coupling of R3SiCH2MgCl with 1,2-dihalogenoethylene: A general route to gamma-substituted (E)-allylsilanes", Tetrahedron Letters, 2004, 45, 4677-4679.  [Link] (Picked up in ChmeInform)

1. Takeshi Hanazawa, Akiko Koyama, Kunio Nakata, Sentaro Okamoto, Fumie Sato, "New Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling between A-ring and C,D-ring Parts", J. Org. Chem., 2003, 68, 9767-9772.
2. Kohki Fukuhara, Sentaro Okamoto, Fumie Sato, "Asymmetric Synthesis of Allyl- and alfa-Allenylamines from Chiral Imines and Alkynes via (eta2-Imine)Ti(O-i-Pr)2 Complexes", Organic Letters, 2003, 5, 2145-2149. (Picked up in ChmeInform)
3. Takeshi Hanazawa, Akiko Koyama, Takeshi Wada, Eiko Morishige, Sentaro Okamoto, Fumie Sato, "Efficient Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling", Organic Letters, 2003, 5, 523-525. See also the correction: 2003, 5, 3167.
4. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "An efficient synthesis of optically active (2R,3R)-2-methyl-3-[(1R)-1-methylprop-2-enyl] cyclopentanone, a useful chiral building block for synthesis of vitamin D and steroids", Tetrahedron Letters, 2003, 44, 2113-2115. (Picked up in ChemInform)
5. Yongcheng Song, Yuuki Takayama, Sentaro Okamoto, Fumie Sato, "An efficient synthesis of optically active five- and six-membered cyclic compounds with selectable stereo-controls by a Ti(II)-mediated cyclization of chiral secondary 2,7- and 2,8-enyn-1-ol derivatives", Tetrahedron Letters, 2003, 44, 653-657. (Picked up in ChemInform)
6. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "A concise asymmetric synthesis of 5,8-disubstituted indolizidine alkaloids. Total synthesis of (-)-indolizidine 209B", Tetrahedron Letters, 2002, 43, 8635-8637.
7. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "Synthesis of carbo- and aza-bicyclo[4.3.0] and [4.4.0] compounds by Ti(II)-mediated cyclization of 2,7- or 2,8-enynyl-1-ol derivatives", Tetrahedron Letters, 2002, 43, 6511-6514. (Picked up in ChemInform)
8. Kwangho Kim, Sentaro Okamoto, Yuuki Takayama, Fumie Sato, "Asymmetric synthesis of stereodefined alfa-alkyl-gamma-benzyloxymethyl-beta-trimethylsilyl-gamma-butyrolactones that serve as an efficient precursor for constructing carbon skeletons having a tertiary or quaternary stereogenic center", Tetrahedron Letters, 2002, 43, 4237-4239.
9. Christophe Delas, Sentaro Okamoto and Fumie Sato, "Highly selective addition reaction of organotitaniums with Garner's aldehyde. Easy preparation of optically active allylic, allenylic, homoallylic and homopropargylic alcohols.", Tetrahedron Lett., 2002, 43, 4373-4375. (Picked up in ChemInform)
10. Subburaj Kandasamy, Sentaro Okamoto, Fumie Sato, "Development of New Chiral Building Blocks for Synthesis of Bicyclo[3.3.0]octane Compounds", J. Org. Chem., 2002, 67, 1024-1026.
11. Takeshi Hanazawa, Takeshi Wada, Tomoko Masuda, Sentaro Okamoto, and Fumie Sato, "Novel Synthetic Approach to 19-nor-1alfa,25-Dihydroxyvitamin D3 and its Derivatives by the Suzuki-Miyaura Coupling in Solution and on Solid Support", Organic Letters, 2001, 3, 3975-3977.
12. Yongcheng Song, Sentaro Okamoto, and Fumie Sato, "Highly Stereoselective Asymmetric Construction of an Acyclic Carbon Skeleton Having Two Adjacent Alkyl Substituents by Michael Addition of Optically Active Allenyltitaniums to Alkylidenemalonates", Organic Letters, 2001, 3, 3543-3545.
13. Sentaro Okamoto, Shin-ichiro Matsuda, Duk Keun An, Fumie Sato, "General synthetic method for preparation of optically active propargyl and allenylstannanes", Tetrahedron Letters, 2001, 42, 6323-6326.
14. Sentaro Okamoto, Fumie Sato, "A Highly Efficient and Practical Preparation of 2,4-Pentadienyltitaniums and their gamma-Selective Addition Reaction with Aldehydes and Ketones", J. Organomet. Chem., 2001, 624, 151-156.
15. Takeshi Hanazawa, Hajime Inamori, Tomoko Masuda, Sentaro Okamoto, Fumie Sato, "Efficient and Practical Synthesis of the A-Ring Precursor of 19-nor-1alfa,25-Dihydroxyvitamin D3 and its 13C- or 2H-Labeled Derivative", Organic Letters. 2001, 3, 2205-2207.
16. Xin Teng, Takeshi Wada, Sentaro Okamoto, Fumie Sato, "One-pot preparation of 2-substituted and 2,3-disubstituted furans from 2-alkynal tetramethylethylene acetals and aldehydes using a divalent titanium reagent Ti(O-i-Pr)4/2 i-PrMgX", Tetrahedron Lett., 2001, 42, 5501-5503.
17. Takeshi Hanazawa, Sentaro okamoto, Fumie Sato, "Chemical synthesis of optically active cis-cyclohexa-3,5-diene-1,2-diols and their 5-2H-derivatives", Tetrahedron Lett., 2001, 42, 5455-5457.
18. Sentaro Okamoto, Kandasamy Subburaj, Fumie Sato, "Ti(II)-Mediated Tandem Inter- and Intramolecular Coupling Reaction of Unsaturated Hydrocarbons: One-pot Preparation of Cyclopentanes and Cyclohexanes from Readily Available Acyclic Starting Materials", J. Am. Chem. Soc., 2001, 123, 4857-4858.
19. Sentaro Okamoto, Xin Teng, Shintaro Fujii, Yuuki Takayama, Fumie Sato, "An Allyltitanium Derived from Acrolein 1,2-Dicyclohexylethylene Acetal and ( eta2-propene)Ti(O-i-Pr)2 as a Chiral Propionaldehyde Homoenolate Equivalent Which Reacts with Imines with Excellent Stereoselectivity. An Efficient and Practical Access to Optically Active -Amino Carbonyl Compounds", J. Am. Chem. Soc., 2001, 123, 3462-3471.
20. Kwangho Kim, Sentaro Okamoto, Fumie Sato, "Regiocontrol of Radical Cyclization by Lewis Acids. Efficient Synthesis of Optically Active Functionalized Cyclopentanes and Cyclohexanes", Organic Letters, 2001, 3, 67-69.
21. Sentaro Okamoto, Kohki Fukuhara, Fumie Sato, "An Efficient and Practical Preparation of Optically Active syn-1-Vinyl-2-amino Alcohol Derivatives by the Regio- and Diastereoselective Addition Reaction of ( alfa-Alkoxyallyl)titaniums with Chiral Imines. Formal Synthesis of Statine", Tetrahedron Letters, 2000, 41, 5561-5565.
22. Takeshi Hanazawa, Sentaro Okamoto, Fumie Sato, "Preparation of Titanated Alkoxyallenes from 3-Alkoxy-2-propyn-1-yl Carbonates and (eta2-Propene)Ti(O-i-Pr)2 as an Efficient Ester Homoaldol Equivalent", Organic Letters, 2000, 2, 2369-2371.
23. Sentaro Okamoto, Kandasamy Subburaj, Fumie Sato, "Highly Stereocontrolled Synthesis of Carbacyclin from Acyclic Starting Materials via Ti(II)-Mediated Tandem Cyclization", J. Am. Chem. Soc., 2000, 122, 11244-11245.
24. Sentaro Okamoto, Tuuki Takayama, Yuan Gao, Fumie Sato, "One-pot Synthesis of a Variety of 1,4-Alkadienes and 1,2,4-Alkatrienes from Alkynes, Allyl, or Propargyl Compounds and Electrophiles by a ( eta2-propene)Ti(O-i-Pr)2-Mediated Reaction", Synthesis, 2000, 975-979.
25. Sentaro Okamoto, Tom Livinghouse, "Titanium-Catalyzed Cycloisomerizatrion of 1,6-Dienes. Regio- and Stereoselective Synthesis of exo-Methylenecycloalkanes", Organometallics, 2000, 8, 1449-1451. [at Montana State University]
26. Sentaro Okamoto, Tom Livinghouse, "Titanium(IV) Aryloxide Catalyzed Cyclization Reactions of 1,6- and 1,7-Dienes", J. Am. Chem. Soc., 2000, 122, 1223-1224. [at Montana State University]
27. Youichi Shimazaki, Kazuya Kameo, Tohru Tanami, Hideo Tanaka, Naoya Ono, Youichi Kiuchi, Sentaro Okamoto, Fumie Sato, Atsushi Ichikawa, "Synthesis and Structure-Activity Relationships of a New Class of Selective EP3 Receptor Agonist, 13,14-Didehydro-16-phenoxy Analogues of Prostaglandin E1", Bioorg. Med. Chem., 2000, 8, 353-362. [collaboration with Taisho Parm. Co. Ltd.]
28. Xin Teng, Yuuki Takayama, Sentaro Okamoto, and Fumie Sato, "Development of a Chiral Propionaldehyde Homoenolate Equivalent Which Reacts with Imines with Excellent Stereoselectivity. Efficient and Practical Synthesis of Optically Active gamma-Amino Carbonyl Compounds", J. Am. Chem. Soc., 1999, 121, 11916-11917.
29. Yuuki Takayama, Sentaro Okamoto, Fumie Sato, "Titanium(II)-mediated Asymmetric Intramolecular Cyclization of 2,7- and 2,8-Enynyl Chiral Acetals. Synthetic Equivalent of Stoichiometric Intramolecular Asymmetric Metallo-Ene Reaction", J. Am. Chem. Soc., 1999, 121, 3559-3560.
30. Duk Keun An, Koichiro Hirakawa, Sentaro Okamoto, Fumie Sato, "Electrophilic Amination of Racemic and Non-racemic Allenyltitaniums. One-pot Synthesis of alfa-Hydrazino-alkynes from Propargylic Alcohol Derivatives", Tetrahedron Letters, 1999, 40, 3737-3740.
31. Masaaki Shirai, Sentaro Okamoto, Fumie Sato, "Practical Synthesis of Optically Active Bicyclic Oxazolidinylpiperidines, Chiral Building Blocks for Preparing 1-Deoxyazasugars, from Serine", Tetrahedron Letters, 1999, 40, 5331-5332.
32. Sentaro Okamoto, Duk Keun An, Fumie Sato, "Synthesis of Optically Active Allenyltitaniums Having Axial Chirality by the Reaction of Optically Active Propargylic Compounds with a Ti(O-i-Pr)4/2i-PrMgCl Reagent", Tetrahedron Letters, 1998, 39, 4551-4554.
33. Duk Keun An, Sentaro Okamoto, Fumie Sato, "Synthesis of Chiral Alkynes Having 2H or Halogen at the Secondary or Tertiary Propargylic Stereogenic Center by Hydrolysis and Halogenolysis of Optically Active Allenyltitaniums Having Axial Chirality", Tetrahedron Letters, 1998, 39, 4555-4558.
34. Duk Keun An, Sentaro Okamoto, Fumie Sato, "Efficient One-Pot Synthesis of Propargylstannanes from Propargylic Alcohol Derivatives via Allenyltitaniums", Tetrahedron Letters, 1998, 39, 4861-4864.
35. Tohru Tanami, Kazuya Kameo, Naoya Ono, Takashi Nakagawa, Shigesato Annou, Mie Tsuboi, Kousuke Tani, Sentaro Okamoto, Fumie Sato, "Synthesis and Pharmacological Activities of 13-dehydro Derivatives of Primary Prostaglandins", Bioorganic & Medical Chem. Lett., 1998, 8, 1507-1510.[collaboration with Taisho Parm. Co. Ltd.]
36. Teng Xin, Sentaro Okamoto, Fumie Sato, "1,5-Asymmetric Induction in Addition Reaction of Aldehydes with Chiral Allyltitaniums Having an Amino Group at the Stereogenic Center. Synthesis of Optically Active 2,6-cis-Disubstituted Piperidines", Tetrahedron Letters, 1998, 39, 6927-6930.
37. Shin-ichiro Matsuda, Duk Keun An, Sentaro Okamoto, Fumie Sato, "An Efficient Method for Conversion of 1-Alken-3-yl Carbonates to 1-Alkenes and 3-Chloro-1-alkenes via Allyltitaniums", Tetrahedron Letters, 1998, 39, 7513-7516.
38. Sentaro Okamoto, Masayuki Iwakubo, Katsushige Kobayashi, Fumie Sato, "Efficient and Practical Method for Synthesizing N-Heterocyclic Compounds Using Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by Ti(O-i-Pr)4/2 i-PrMgX Reagent. Synthesis of Quinolones, Pyrroles, Indoles, and Optically Active N-Heterocycles Including Allopumiliotoxin Alkaloid 267A", J. Am. Chem. Soc., 1997, 119, 6984-6990.
39. Yuuki Takayama, Sentaro Okamoto, Fumie Sato, "Stereoselective Synthesis of Optically Active Substituted Piperidines and Pyrrolidines from Amino Acid Derivatives by Titanium(II)-Mediated Intramolecular Cyclization Reaction", Tetrahedron Letters, 1997, 38, 8351-8354.
40. Xin Teng, Aleksandr Kasatkin, Yasufumi Kawanaka, Sentaro Okamoto, Fumie Sato, "Synthesis of Chiral Allyltitaniums Having an Amino Group at the C-4 Position and Their Diastereoselective Addition Reaction with Aldehydes", Tetrahedron Letters, 1997, 38, 8977-8980.
41. Yasufumi Kawanaka, Naoya Ono, Yukio Yoshida, Sentaro Okamoto, Fumie Sato, "Synthesis of the Key Component for Preparation of 6-Keto-prostaglandins by a Two-Component Coupling Process: Synthesis of 6-Keto-Prostaglandin E1, Ornoprostill and delta2-trans-6-Keto-Prostaglandin E1.", J. Chem. Soc., Perkin Trans. 1, 1996, 715-718.
42. Sentaro Okamoto, Aleksandr Kasatkin, P. K. Zubaidha, Fumie Sato, "Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by XTi(O-i-Pr)3 (X=Cl, O-i-Pr)/2 i-PrMgBr Reagent. Efficient Synthesis of Functionalized Organotitanium Compounds from Unsaturated Compounds", J. Am. Chem. Soc., 1996, 118, 2208-2216.
43. Aleksandr Kasatkin, Katsushige Kobayashi, Sentaro Okamoto, Fumie Sato, "Synthesis of 1-Hydroxybicyclo[n.1.0]alkanes (n = 3 and 4) and Their Silyl Ethers from Olefinic Esters via Tandem Intramolecular Nucleophilic Acyl Substitution and Intramolecular Carbonyl Addition Reactions Mediated by Ti(OPr-i)4/2 i-PrMgCl Reagent", Tetrahedron Letters, 1996, 37, 1849-1852.
44. Sentaro Okamoto, Hiroyoshi Sato, Fumie Sato, "Highly Efficient Synthesis of Alka-1,3-dien-2-yltitanium Compounds from Alka-2,3-dienyl Carbonates. A New, Practical Synthesis of 1,3-Dienes and 2-Iodo-1,3-dienes", Tetrahedron Letters, 1996, 37, 8865-8868.
45. Yukio Yoshida, Sentaro Okamoto, Fumie Sato, "Intramolecular Nucleophilic Acyl Substitution Reaction of 3,4-Alkadienyl Carbonates Mediated by Ti(O-i-Pr)4/2 i-PrMgCl Reagent. Efficient Synthesis of Optically Active β,γ-Unsaturated Esters with an α-Substituent", J. Org. Chem., 1996, 61, 7826-7831.
46. Yukio Yoshida, Yoshitaka Sato, Sentaro Okamoto, Fumie Sato, "An Efficient Approach to Optically Active Benzoprostacyclins by a Two-Component Coupling Process", J. Chem. Soc., Chem. Commun., 1995, 811-812.
47. Aleksandr Kasatkin, Sentaro Okamoto, Fumie Sato, "Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by Ti(OPr-i)4/2 i-PrMgBr Reagent. Synthesis of Vinyltitanium Compounds Having a Lactone and/or an Ester Group from Acetylenic Carbonates", Tetrahedron Letters, 1995, 36, 6075-6078.
48. Aleksandr Kasatkin, Takashi Nakagawa, Sentaro Okamoto, Fumie Sato, "New, Efficient Method for the Synthesis of Allyltitanium Compounds from Allyl Halides or Allyl Alcohol Derivatives via Oxidative Addition. A Highly Efficient and Practical Synthesis of Homoallyl Alcohols", J. Am. Chem. Soc., 1995, 117, 3881-3882.
49. Sentaro Okamoto, Naoya Ono, Kousuke Tani, Yukio Yoshida, Fumie Sato, "Conversion of Allyl-2-Ynoates to Alk-2-Ynoic Acids Using Morpholine and Palladium(0)-Bis(diphenylphosphino)Alkane Catalyst; Synthesis of 2,2,3,3-Tetradehydro PGE1", J. Chem.Soc., Chem. Commun., 1994, 279-280.
50. Kousuke Tani, Naoya Ono, Sentaro Okamoto, Fumie Sato, "Palladium(0)-Catalysed Transfer Hydrogenation of Alkynes to cis-Alkenes with HCO2H-NEt3", J. Chem. Soc., Chem. Commun., 1993, 386-387.
51. Sentaro Okamoto, Kousuke Tani, Fumie Sato, K. Barry Sharpless, Davit Zargarian, "Synthesis of Optically Active Secondary Allylic Alcohols from Allylsilanes via Successive Asymmetric Dihydroxylation (AD) and Peterson Olefination Reactions", Tetrahedron Letters, 1993, 34, 2509-2512. [collaboration with K. B. Sharpless Labo.]
52. Kousuke Tani, Yoshitaka Sato, Sentaro Okamoto, Fumie Sato, "Synthesis of Optically Active Furfuryl Alcohols and Butenolides from trans-1-Trimethylsilyl-3-Alken-1-ynes via Successive Asymmetric Dihydroxylation and Hydromagnesiation Reactions", Tetrahedron Letters, 1993, 34, 4975-4978.
53. Naoya Ono, Yukio Yoshida, Kousuke Tani, Sentaro Okamoto, Fumie Sato, "A Highly Efficient Approach to Prostaglandins via Radical Addition of alfa Side-Chains to Methylenecyclopentanones. Total Synthesis of Natural PGE1, Limaprost and New Prostaglandin Derivatives.", Tetrahedron Letters, 1993, 34, 6427-6430.
54. E. H. Oliw, Sentaro Okamoto, L. Hornsten, Fumie Sato, "Biosynthesis of Prostaglandins from 17(18)-Epoxy-Eicosatetraenoic Acid, a Cytochrome P-450 Metabolite of Eicosapentaenoic Acid", Biochemica et Biophysica Acta, 1992, 1126, 261-268.[collaboration with Uppsala University]
55. Sentaro Okamoto, Satoshi Katayama, Naoya Ono, Fumie Sato, "A New Efficient Synthesis of the Biologically Potent PGD2-Analogue ZK118182", Tetrahedron: Asymmetry, 1992, 3, 1525-1528.
56. Naoya Ono, Mie Tsuboi, Sentaro Okamoto, Tohru Tanami, Fumie Sato, "Synthesis of Allyl Ester of Prostaglandin E and the Conversion of the Allyl Ester Moiety into Carboxylic Acid by Chemical Method. A Highly Practical Synthesis of Natural PGE1 and Limaprost", Chemistry Letters, 1992, 2095-2098.
57. Sentaro Okamoto, Toshiharu Yoshino, Hiromi Tsujiyama, Fumie Sato, "Highly Efficient and General Method for Synthesis of Tertiary Allylic Alcohols in a Chiral Form. Synthesis of Arbaprostil", Tetrahedron Letters, 1991, 32, 5793-5796.
58. Sentaro Okamoto, Hiromi Tsujiyama, Toshiharu Yoshino, Fumie Sato, "Synthesis of Optically Active gmma-Trimethylsilyl-beta, gamma-Epoxy Tertiary Alcohols by the Diastereoselective Addition Reaction of beta-Trimethylsilyl-alfa, beta-Epoxyketones with Grignard Reagents", Tetrahedron Letters, 1991, 32, 5789-5792.
59. Toshiharu Yoshino, Sentaro Okamoto, Fumie Sato, "Highly Efficient Synthesis of 13-Dehydroprostaglandins by 1,4-Addition Reaction of Alkynyl omega Side-Chain Unit onto Cyclopentenone Framework", J. Org. Chem., 1991, 56, 3205-3207.
60. Sentaro Okamoto, Toshiharu Yoshino, Fumie Sato, "A Practical Synthesis of the omega Side-Chain Unit Present in Mexiprostil and Its Use for Synthesis of Mexiprostil via Two-Component Coupling Process", Tetrahedron: Asymmetry, 1991, 2, 35-38.
61. Takayori Ito, Isao Yamakawa, Sentaro Okamoto, Yuichi Kobayashi, Fumie Sato, "A New Stereoselective Method for Synthesis of Optically Active beta-Alkylhomoallyl Alcohols and gamma, delta-Epoxy-beta-Alkyl Alcohols", Tetrahedron Letters, 1991, 32, 371-374.
62. Takayori Ito, Sentaro Okamoto, Fumie Sato, "Synthesis of Optically Active alfa-Trimethylsilyl delta alfa,beta-Butenolides and their Conversion into Various Butenolides and Saturated gamma-Lactones", Tetrahedron Letters, 1990, 31,, 6399-6402.
63. Hiromi Tsujiyama, Naoya Ono, Toshiharu Yoshino, Sentaro Okamoto, Fumie Sato, "A Highly Practical Synthesis of Natural PGE1, delta2-Trans-PGE1 and 2,2,3,3-Tetrade-Hydro-PGE1 via Two-Component Coupling Process Using Zinc-Copper Reagents", Tetrahedron Letters, 1990, 31, 4481-4484.
64. Takayori Ito, Sentaro Okamoto, Fumie Sato, "Practical Method for Synthesis of Optically Pure Propargylic Alcohols", Tetrahedron Letters, 1989, 30, 7083-7086.
65. Yasunori Kitano, Sentaro Okamoto, Fumie Sato, "A New Method for the Synthesis of Protected Chiral 4-Hydroxy-2-Cyclopentenone", Chemistry Letters,1989, 21 63-2164.
66. Sentaro Okamoto, Yuichi Kobayashi, Fumie Sato, "A Highly Efficient Synthesis of Natural PGE3 and 5,6-Dihydro PGE3 via Two-Component Coupling Process", Tetrahedron Letters, 1989, 30, 4379-4382.
67. Sentaro Okamoto, Yuichi Kobayashi, Hiroshi Kato, Kimihiko Hori, Takashi Takahashi, Jiro Tsuji, Fumie Sato, "Prostaglandin Synthesis via Two-Component Coupling. Highly Efficient Synthesis of Chiral Prostaglandin Intermediates 4-Alkoxy-2-Alkyl-2-Cyclopenten-1-one and 4-Alkoxy-3-Alkenyl-2-Methylenecyclopentan-1-one", J. Org. Chem., 1988, 53, 5590-5592.
68. Yasunori Kitano, Takashi Matsumoto, Takenori Wakasa, Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi Kobayashi, Fumie Sato, Katsuaki Miyaji, Kazutaka Arai, "A Highly Efficient Synthesis of Optically Pure gamma-iodo Allylic Alcohols and their Conversion into Various Optically Active Allylic Alcohols", Tetrahedron Letters, 1987, 28, 6351-6354.
69. Yuichi Kobayashi, Sentaro Okamoto, Toshiyuki Shimazaki, Yoshinori Ochiai, Fumie Sato, "Synthesis and Physiological Activities of Both Enantiomers of Coriolic Acid and their Geometric Isomers", Tetrahedron Letters, 1987, 28, 3959-3962.
70. Yasunoi Kitano, Takashi Matsumoto, Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi Kobayashi, Fumie Sato, "A Highly EfficientrSynthesis of Prostaglandin omega-Chain Precursors", Chemistry Letters, 1987, 1523-1526.
71. Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi Kobayashi, Fumie Sato, "A Highly Efficient Synthesis of gamma-Halo Allylic and Propargylic Alcohols with High Optical Purity. Practical Method for Synthesis of the Prostaglandin omega-Chain", Tetrahedron Letters, 1987, 28, 2033-2036.
72. Sentaro Okamoto, Toshiyuki Shimazaki, Yasunori Kitano, Yuichi Kobayashi, Fumie Sato, "A Practical Preparation of alfa-Hydroxy and alfa,beta-Dihydroxy Aldehydes, Useful Intermediates for the Synthesis of Arachidonic Acid Metabolites, Starting with D-Glyceraldehyde Acetonide", J. Chem. Soc., Chem. Commun., 1986, 1352-1355.

1. Sentaro Okamoto, “Synthetic Reactions Using Low-Valent Titanium Reagents Derived from Ti(OP)4 or CpTiX3 (X = O-i-Pr or Cl) in the Presence of Me3SiCl and Mg”, The Chemical Record, 2016, 16, 857-872. [Link]
2. 
3. Sentaro Okamoto, "Synthetic Reactions Using A Low-Valent Titanium Reagent Ti(OR)4/Me3SiCl/Mg," Yuki Gosei Kagaku Kyoukaishi, 2014, 72, 382-392.[Link]
4. Sentaro Okamoto, Yu-ki Sugiyama, “From Development of Catalysts for Alkyne and Alkyne/Nitrile [2 + 2 + 2] Cycloaddition Reactions to Their Use in Polymerization Reactions,” SYNLETT, 2013, 1044-1060. (Account)[Link]
5. Sentaro Okamoto, “Synthesis of 2,2’-Bipyridines by Transition Metal-Catalyzed Alkyne/Nitrile [2 + 2 + 2] Cycloaddition Reactions,” Heterocycles, 2012, 85, 1579-1602. (Review) (Picked up in ChemInform)[Link]
6. Sentaro Okamoto, “Possibility of catalytic reaction control of organic typical metals with strong Lewis bases”, Organometallic News, 2009, 67.
7. Fumie Sato, Sentaro Okamoto, "Ti(O-i-Pr)4 / 2 i-PrMgX as a Versatile Divalent Titanium Reagent in Organic Synthesis", My Favorite Organic Synthesis, The Society of Synthetic Organic Chemistry, Japan (2002). (Book)[Link]
8. Fumie Sato, Sentaro Okamoto, "Divalent Titanium Complex Ti(O-i-Pr)4 / 2 i-PrMgX as an Efficient and Practical Reagent for Fine Chemical Synthesis", Advanced Synthesis & Catalysis, 2001, 343, 759-784. (Review)[Link]
9. Fumie Sato, Sentaro Okamoto, “Biscyclopentadienyltitanium(III) chloride dimer”, e-EROS Encyclopedia of Reagents for Organic Synthesis (2001). (e-Book)[Published Online : 15 APR 2003, DOI: 10.1002/047084289X.rn00196]
10. Sentaro Okamoto, “Synthesis of enantio-enriched axially chiral allenyltitaniums and their reaction with electrophiles”, Yuki Gosei Kagaku Kyoukaishi, 2001, 59, 1204-1211.[Link]
11. Fumie Sato, Hirokazu Urabe, Sentaro Okamoto, "Synthesis of Organotitanium Complexes from Alkenes and Alkynes, and their Synthetic Applications", Chemical Reviews, 2000, 100, 2835-2886. (Review)[Link]
12. Fumie Sato, Hirokazu Urabe, Sentaro Okamoto, "Synthetic Reactions Mediated by a Ti(O-i-Pr)4 / 2 i-PrMgX Reagent", SYNLETT, 2000, 753-775. (Account)[Link]
13. Sato, Fumie; Okamoto, Sentaro; Tsuchiya, Shuuji; Takahashi, Yasuhiro; Ohara, Yoshio, “Prostaglandin synthesis via two-component coupling process. The course of industry-university cooperation toward the production of PGE1 in a kilogram scale”, Yuki Gosei Kagaku Kyoukaishi,1999, 57, 422-428.[Link]
14. Fumie Sato, Hirokazu Urabe, Sentaro Okamoto, "Bicyclization of dienes, enynes, and diynes with Ti(II) reagent. New developments towards asymmetric synthesis.", Pure & Appl. Chem., 1999, 71, 1511-1519. (Review)[Link]
15. Sato, Fumie; Urabe, Hirokazu; Okamoto, Sentaro, “Synthetic reactions with divalent titanium complex”, Yuki Gosei Kagaku Kyoukaishi,1998, 56, 424-432.[Link].

・15.・・15.

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・16.
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その他

1. Sentaro Okamoto, “Development of selective and practical synthetic reactions using group IV metals”, Kanagawa Daigaku Kogakubu Hokoku (2008), 46, 91-96.
2. Tobiyuki Ikehara, Sentaro Okamoto, “Organic materials spectral diffraction and micromeasurement system”, Kanagawa Daigaku Kogakubu Hokoku (2008), 46, 69-71.
3. Sentaro Okamoto. “Organotitanium reagents applicable to stoichiometric synthetic processes”, Kanagawa Daigaku Kogakubu Hokoku (2003), 41, 20-23.
4. Sentaro Okamoto, “Asymmetric synthesis of allenyl organometallics and their synthetic utility: chemistry of axially chiral allenyltitanium complexes”, Kanagawa Daigaku Kogaku Kenkyusho Shoho (2002), 25, 70-76.

1. Kamo, Kazuyuki; Okamoto, Sentaro, "Method for producing a polymer compound with high molecular weight for manufacturing an organic electronic material", Jpn. Kokai Tokkyo Koho (2019), JP 2019206676 A 20191205.
2. Kamo, Kazuyuki; Okamoto, Sentaro, "Charge transport polymer, its manufacture, its use in organic electronic material, ink composition, organic electronic device, organic electroluminescent device, illumination apparatus, and display device", Jpn. Kokai Tokkyo Koho (2019), JP 2019131672 A 20190808.
3. Shimada, Yukihisa; Okamoto, Sentaro; Nakagawa, Rie, "Preparation of aliphatic acid derivatives as biosynthesis inhibitors of auxins and method for their preparation", Jpn. Kokai Tokkyo Koho (2019), JP 2019131540 A 20190808.
4. Funyuu, Shigeaki and Asano, Naoki and Ishizuka, Kenichi and Okamoto, Sentaro. "Organic photoelectric converter having polymer with arylene-C3 chain-arylene repeating unit and its manufacture", Jpn. Kokai Tokkyo Koho (2013) JP2013070000A.
5. Funyuu, Shigeaki; Ishitsuka, Kenichi; Nakako, Hideo; Okamoto, Sentaro, “Compound having trimethylene structure, polymer compound containing unit that has trimethylene structure, and reactive compound having trimethylene structure”, PCT Int. Appl. (2011), WO 2011093463 A1 20110804.
6. Okamoto, Sentaro, “Process for production of substituted benzene derivatives”, PCT Int. Appl. (2007), WO 2007080837 A1 20070719.
7. Sato, Fumie; Okamoto, Sentaro, “Preparation of vitamin D derivatives”, Jpn. Kokai Tokkyo Koho (2003), JP 2003327575 A 20031119.
8. Sato, Fumie; Okamoto, Sentaro, “Halovinylidenemethylenecyclohexane compounds, borovinylidenemethylenecyclohexane compounds, and process for producing vitamin D derivative from them”, PCT Int. Appl. (2003), WO 2003074480 A1 20030912.
9. Sato, Fumie; Okamoto, Sentaro, “Optically active dihydroxycyclohexane compounds and process for producing optically active hydroxyethylenedihydroxycyclohexane compounds”, PCT Int. Appl. (2003), WO 2003031455 A1 20030417.
10. Sato, Fumie; Okamoto, Sentaro, “Process for preparation of 19-norvitamin D derivatives”, PCT Int. Appl. (2003), WO 2003031402 A1 20030417.
11. Sato, Fumie; Okamoto, Sentaro, “Process for preparation of 19-norvitamin D derivatives by cross-coupling reaction of 2-(bromomethylene)-1,3-dihydroxycyclohexane derivatives with vinylboronic acid derivatives or acetylene derivative”, PCT Int. Appl. (2003), WO 2003031401 A1 20030417.
12. Sato, Fumimori; Okamoto, Sentaro, “Preparation of trans-1,2-diarylethanediamines”, Jpn. Kokai Tokkyo Koho (2002), JP 2002338531 A 20021127.
13. Sato, Fumie; Okamoto, Sentaro, “Preparation of optically active cyclohexenes as intermediates for active vitamin D derivatives”, Jpn. Kokai Tokkyo Koho (2002), JP 2002201150 A 20020716.

Presentations

1. K. Sakai, T. Yamada, S. Okamoto, Ester aminolysis catalyzed by 2-pyridone derivatives, 3PC-008, 3PC-001, 2020年3月（千葉）.
2. K. Ibe, M. Ogami, T. Yamada, S. Okamoto, Synthesis and Vitamin D Receptor Affinity of 16-oxa Vitamin D3 Derivatives.-2, 3PC-002, 3PC-001, 2020年3月（千葉）.
3. M. Ogami, S. Okamoto, T. Yamada, K. Ibe, Synthesis and Vitamin D Receptor Affinity of 16-oxa Vitamin D3 Derivatives.-1, 3PC-001, 2020年3月（千葉）.
4. Y. Okabe, T. Yamada, S. Okamoto, Nickel catalyzed cycloaddition polymerization of 1,6-diynes, 3PA-012, 3PC-001, 2020年3月（千葉）.
5. Y. Kimura, N. Kikuta, Y. Yasuda, T. Uchida, T. Yamada, S. Okamoto, Development of dual-mode coupling polymerization by a low-valent titanium reagent Ti(O-i-Pr)4/Me3SiCl/Mg, 1PB-141, 3PC-001, 2020年3月（千葉）.
6. 木村祐也，菊田奈菜，安田葉助，山田健，岡本専太郎，低原子価チタン反応剤によるdual-modeカップリング重合法の開発，第9回CSJ化学フェスタ，P8-076，2019年10月(東京).
7. 山本春佳，小沢早紀，中川理絵，山田健，岡本専太郎，嶋田幸久，IBAの生合成阻害剤の探索，第9回CSJ化学フェスタ，P5-070，2019年10月(東京).
8. 山本春佳，島田美咲，山田健，中川理絵，岡本専太郎, インドール酪酸（IBA）の生物活性の解明を目指したオーキシンアナログの合成，日本化学会第99春季年会，2PC-029，2019年3月（神戸）
9. 菊田奈菜，山田 健，岡本 専太郎，CoCl2-6H2O/dipimp/Zn触媒によるアルキンの[2+2+2]環化付加反応を用いた多分岐高分子の合成，日本化学会第99春季年会，1PB-007，2019年3月（神戸)
10. 佐野俊市郎，岡本専太郎，山田健，低原子価チタンを鍵反応としたent-Artmeisininの合成研究，第8回CSJ化学フェスタ，2018年10月(東京).
11. 菊田奈菜，進藤卓宏，岡本専太郎，Co触媒によるアルキン環化付加重合を用いた多分岐高分子の合成，第8回CSJ化学フェスタ，2018年10月(東京).
12. 中田春樹，竹村真太朗，太田登茂樹，山田健，岡本専太郎，二価チタン反応剤によるアルキンの分子内ビニル-およびアレニル-チタン化環化反応，第8回CSJ化学フェスタ，2018年10月(東京).
13. 進藤卓宏，菊田奈々，岡本専太郎，アルキン[2+2+2]環化付加反応による分岐高分子の合成，第7回CSJ化学フェスタ，2017年10月(東京).
14. 西川義昭，三田裕大，松野千加士，岡本専太郎，チタナシクロペンテンとギ酸エステルの反応による置換シクロペンタジエンの合成, 日本化学会第97春季年会，1PB-112 （2017年3月16日，慶応義塾大学、日吉）
15. Suchithra Madhavan，進藤卓宏，松野千加士，岡本専太郎，シリカ担持銀触媒による2’-ヒドロキシカルコンとアゾメチンイリドの[3+2]環化付加反応，日本化学会第97春季年会，1PB-076 （2017年3月16日，慶応義塾大学、日吉）
16. 中田春樹，佐野俊一郎，松野千加士，岡本専太郎，ビタミンDのC,D環部誘導体の合成，日本化学会第97春季年会，2PB-028 （2017年3月17日，慶応義塾大学、日吉）
17. Takahiro SHINDO, Yusuke NAITO, Ayuri NISHIZAWA, Chikashi MTSUNO, Sentaro OKAMOTO, “Synthesis and Hole-Mobility of Folded π-Stacking Polymers”, 日本化学会第96春季年会，3PC-124 (2016年3月26日，同志社大学（京都）.
18. Yu-ki SUGIYAMA, Yukihiro ENDO, Miki IKARASHI, Chikashi MTSUNO, Sentaro OKAMOTO, “Extensive Application of Cobalt-Catalyzed [2+2+2] Cycloaddition of Alkynes and Nitriles”, 日本化学会第96春季年会，3PC-081 (2016年3月26日，同志社大学（京都）.
19. Yuhma UMEHARA, Shunnosuke ITO, Tomomi SAWADA, Chikashi MTSUNO, Sentaro OKAMOTO, “Low-valent Titanium-Mediated Biscyclization of Enynes and Ethyl Formate”, 日本化学会第96春季年会，3PC-075 (2016年3月26日，同志社大学（京都）.
20. Yukihiro ENDO, Yusuke NAITO, Ryouhei SHIGEMATSU, Chikashi MTSUNO, Sentaro OKAMOTO, “Low-valent Titanium Alkoxide-Mediated McMurry Coupling Polymerization”, 日本化学会第96春季年会，3PC-074 (2016年3月26日，同志社大学（京都）.
21. Suchithra MADHAVAN, Hiromasa TAKAGI, Shupei FUKUDA, Chikashi MTSUNO, Sentaro OKAMOTO, “Low-valent Titanium-Promoted Deprotection of Amino-Protecting Groups”, 日本化学会第96春季年会，3PC-073 (2016年3月26日，同志社大学（京都）.
22. Yuhki Tanabe, Yu-ki Sugiyama, Shiori Heigozono, Kazuhiro Tamura, and Sentaro Okamoto, “Iro-catalyzed reductive magnesiation of oxetanes and metalative cyclization of alkynyl oxetanes”, INOR 1290, PacifiChem 2016, Hawaii (2015年12月15-20日).
23. Yuhsuke Naito, Chikashi Matsuno, and Sentaro Okamoto, “Synthesis and properties of folded π-stacking polymers and their utilization to organic photovoltaic cell”, MACR 512, PacifiChem 2016, Hawaii (2015年12月15-20日).
24. Suchithra Madhavan, Hiromasa Takagi, Chikashi Matsuno, and Sentaro Okamoto, “Low-valent titanium catalyzed deprotection of alloc- and poc-amides”, INOR 1213, PacifiChem 2016, Hawaii (2015年12月15-20日).
25. 清水めぐ・杉山雄樹・田村和大・松野千加士・岡本専太郎，” 鉄触媒によるアルキニルオキセタンの分子内カルボメタル化反応”, 日本化学会第95春季年会，3PC-133 (2015年3月26-29日，日本大学理工学部（千葉）(発表予定)).
26. 田邉雄己・高木啓允・松野千加士・岡本専太郎，“低原子価チタンによるAllocの脱保護法”，日本化学会第95春季年会，3PC-160 (2015年3月26-29日，日本大学理工学部（千葉）(発表予定)).
27. 内藤佑輔・浅野直紀・舟生重昭・岡本専太郎, “折り畳みスタック高分子の光電変換素子への応用”，日本化学会第95春季年会，2PA-201 (2015年3月26-29日，日本大学理工学部（千葉）(発表予定)).
28. 杉山雄樹，藤本貴大，岡本専太郎，“鉄触媒3-オキシドプロピルマグネシウム反応剤の発生とその反応性”，第61回有機金属化学討論会，P2A-32（2014年9月23-26日，九州大学）.
29. 藤本貴大，杉山雄樹，平後園栞，岡本専太郎，“鉄触媒還元的マグネシウム化による3-オキシドプロピルマグネシウム反応剤の発生”，第61回有機金属化学討論会，P2A-33（2014年9月23-26日，九州大学）.
30. Sentaro Okamoto, Yu-ki Sugiyama, Takahiro Fujimoto, Shiori Heigozono, “Iron-Catalyzed Reductive Magnesiation of Oxetanes Generating (3-Oxidopropyl)magnesium Reagents”, XXVI International Conference on Organometallic Chemistry (ICOMC 2014) (July 2014). 岡本専太郎，杉山雄樹，藤本貴大，平後園栞，“鉄触媒還元的マグネシウム化による3-オキシドプロピルマグネシウム反応剤の発生”，第26回有機金属化学国際会議，3P096（2004年7月14-18日，札幌）
31. 内藤佑輔，森合亮太，舟生重昭，石塚健一，浅野直紀，岡本専太郎，”エーテル結合型折り畳みH-スタッキング高分子の合成”, 日本化学会第94春季年会，2PC-089 (2014年3月27-30日，名古屋大学).
32. 伊部公太，高木啓允，岡本専太郎，“19-nor型ビタミンD誘導体A環部の合成法”，日本化学会第94春季年会，3PC-030 (2014年3月27-30日，名古屋大学).
33. 高木啓允，田邊雄己，松野千加士，岡本専太郎, “低原子価アルコキシチタンによる脱アリル化・脱プロパルギル化反応”，日本化学会第94春季年会，1PC-184 (2014年3月27-30日，名古屋大学).
34. 田邊雄己，竹腰直人，松野千加士，岡本専太郎，“種々の低原子価アルコキシチタンの発生と反応”，日本化学会第94春季年会，1PC-183 (2014年3月27-30日，名古屋大学).
35. 藤本貴大，杉山雄樹，平後園栞，岡本専太郎，“鉄触媒によるオキセタン類の還元反応”，日本化学会第94春季年会，1PC-159 (2014年3月27-30日，名古屋大学).
36. 森合亮太, 内藤佑輔, 舟生重昭, 石塚健一, 浅野直紀, 岡本専太郎，“折り畳み型π積層高分子の合成と物性“, 第62回高分子討論会, 1Pe091 (2013年9月11-13日、金沢大学)
37. 杉山雄樹, 桜田哲哉, 岡本専太郎, “コバルト触媒シリルアセチレンの内部アルキンへの付加反応”, 第60回有機金属化学討論会, P1B-25 (2013年9月12-14日、学習院大学)
38. 竹腰直人, 宮下賢司, 正路則明, 松野千加士, 岡本専太郎, “チタナトランからの低原子科チタン種の発生とその触媒反応”, 第60回有機金属化学討論会, P1A-05 (2013年9月12-14日、学習院大学)
39. 高木啓允・伊部公太・竹腰直人・岡本専太郎，“Vitamin D合成A環部ユニットの効率合成”，日本化学会第93春季年会講演予稿集[3-PA-022]（滋賀，2013-3）.
40. 伊部公太・米山彩・勝股瞳・岡本専太郎，“環状Isothioureaのアシル化触媒能”，日本化学会第93春季年会講演予稿集[3-PA-021]（滋賀，2013-3）.
41. 杉山雄樹・藤本貴大・桜田哲哉・岡本専太郎，“1,6-ジインのNi触媒による重合反応挙動”，日本化学会第93春季年会講演予稿集[3-PA-134]（滋賀，2013-3）.
42. 藤本貴大・杉山雄樹・桜田哲哉・岡本専太郎，“コバルト触媒によるシリルアセチレンの内部アルキンへの付加”，日本化学会第93春季年会講演予稿集[3-PA-123]（滋賀，2013-3）.
43. 竹腰直人・宮下賢司・松野千加士・岡本専太郎，“Titanatraneを触媒とするオキセタンのラジカル還元”，日本化学会第93春季年会講演予稿集[3-PA-115]（滋賀，2013-3）.
44. 森合亮太・野村諒祐・舟生重昭・石塚健一・浅野直紀・岡本専太郎，“折り畳みH-スタッキング高分の合成と物性”，日本化学会第93春季年会講演予稿集[3-PA-021]（滋賀，2013-3）.
45. 岡本専太郎，“二位置換トリメチレン連結部による折り畳み型H-スタッキング高分子“, 第61回高分子討論会, 3F10 (2012年9月19-21日、名古屋工業大学)
46. 杉山雄樹, 桜田哲哉, 岡本専太郎, “アルキン[2+2+2]環化付加反応による連鎖重合および自発的ブロック共重合”, 第59回有機金属化学討論会, P3A-12 (2012年9月13-15日、大阪大学): 有機金属化学討論会ポスター賞 受賞
47. 桜田哲哉, 杉山雄樹, 松野千加士, 岡本専太郎, “フタル酸エステル添加によるアルキン[2+2+2]環化付加コバルト触媒の活性化”, 第59回有機金属化学討論会, P3A-13 (2012年9月13-15日、大阪大学)
48. Sentaro Okamoto, “Selectivity Control of Alkyne [2+2+2] Cycloaddition Reaction and Its Application to Chain-Growth Cycloaddition Polymerization Reactions”, 4th EuCheMS Chemistry Congress, P0410 (2012年8月26-30日，チェコ　プラハ).
49. 森合亮太・野村諒祐・工藤賢・岡本専太郎, “２位置換トリメチレン連結型π—スタック高分子のより簡便な合成法”, 日本化学会第92春季年会講演予稿集[2-PA-237]（神奈川，2012-3）.
50. 野村諒祐・工藤賢・松野千加士・岡本専太郎, “２位置換トリメチレン連結型π―スタック高分子の合成と物性”, 日本化学会第92春季年会講演予稿集[2-PA-236]（神奈川，2012-3）.
51. 杉山雄樹・桜田哲哉・松野千加士・岡本専太郎, “アルキン／ニトリル[2+2+2]環化付加反応による高分子合成”, 日本化学会第92春季年会講演予稿集[3-PA-090]（神奈川，2012-3）.
52. 桜田哲哉・杉山雄樹・松野千加士・岡本専太郎, “フタル酸エステル添加によるアルキン[2+2+2]環化付加コバルト触媒の活性化”, 日本化学会第92春季年会講演予稿集[3-PA-089]（神奈川，2012-3）.
53. 竹腰直人・正路則朗・松野千加士・岡本専太郎, “低原子価チタン反応剤によるオキセタンのラジカル還元反応”, 日本化学会第92春季年会講演予稿集[3-PA-028]（神奈川，2012-3）.
54. 杉山雄樹・桜田哲哉・岡本専太郎, “触媒的アルキン[2+2+2]環化付加の反応制御と精密高分子合成への応用”, 第100回有機合成シンポジウム[O-45]（東京，2011-11）.
55. 正路則明・河治健・岡本専太郎, “Ti(O-i-Pr)4/Me3SiCl/Mgを用いる合成反応の開発”, 第100回有機合成シンポジウム[P-7]（東京，2011-11）.
56. 岡本専太郎, “配座制御を基とする折り畳みπスタッキング高分子の設計と合成”, 日本化学会第91春季年会講演予稿集[1-S7-16]（横浜，2011-3）.
57. ビシュワンハラン ベービー・興村達也・鈴木聡子・松野千加士・岡本専太郎, “ジヒドロピリミドベンゾチアゾール(DHPB)を触媒とするアズラクトンのアルドール反応”, 日本化学会第91春季年会講演予稿集[3-PB-043]（横浜，2011-3）.
58. ビシュワンハラン ベービー・興村達也・鈴木聡子・松野千加士・岡本専太郎, “4-アリールジヒドロピリミドベンゾチアゾール(4Ar-DHPB)を触媒とする不斉Steglich転位反応”, 日本化学会第91春季年会講演予稿集[3-PB-042]（横浜，2011-3）.
59. 工藤　賢・星野　暢・野村　諒祐・岡本　専太郎, “マロン酸エステルを連結部とする非連結部π型高分子の合成”, 日本化学会第91春季年会講演予稿集[2-PB-035]（横浜，2011-3）.
60. 桜田哲哉・杉山雄樹・加藤令・岡本専太郎, “Co触媒アルキン[2 + 2 + 2]環化付加反応による連鎖重付加とその応用”, 日本化学会第91春季年会講演予稿集[2-PB-050]（横浜，2011-3）.
61. 杉山雄樹・桜田哲哉・加藤令・岡本専太郎, “Co触媒アルキン[2 + 2 + 2]環化付加反応による連鎖重付加”, 日本化学会第91春季年会講演予稿集[1-C8-14]（横浜，2011-3）.
62. 正路則明・河治健・岡本専太郎, “低原子価チタンによるスルホンアミドの還元的解裂反応とその機構”, 日本化学会第91春季年会講演予稿集[2-PB-188]（横浜，2011-3）.
63. 相坂真仁・宮下賢司・正路則朗・河治健・岡本専太郎, “低原子価チタンによるエポキシドの還元反応とその機構”, 日本化学会第91春季年会講演予稿集[2-PB-189]（横浜，2011-3）.
64. 長谷川祐介・ビシュワンハラン ベービー・松野千加士・岡本専太郎, “イミダゾベンゾチアゾールを触媒とする一級アルコール選択的アシル化”, 日本化学会第91春季年会講演予稿集[2-PB-041]（横浜，2011-3）.
65. 土屋裕児・安房優太・岡本専太郎, “イミダゾリウムやトリアゾリウムカルベンを配位子とする触媒的Grignardアリル置換反応”, 日本化学会第91春季年会講演予稿集[2-PA-190]（横浜，2011-3）.
66. 野村涼祐・工藤賢・星野暢・岡本専太郎, “トリメチレン連結型折り畳みπスタック高分子の合成”, 日本化学会第91春季年会講演予稿集[2-PB-036]（横浜，2011-3）.
67. 釼持清秀・林直斗・松野千加士・岡本専太郎, “Vitamin D誘導体合成に向けたＣ,Ｄ環ユニットの合成”, 日本化学会第91春季年会講演予稿集[3-PB-068]（横浜，2011-3）.
68. B. Viswambharan, C. Matsuno, S. Okamoto, “Synthesis and properties of substituted 2,3-dihydro-4H-pyrimido[2,3-b]benzothiazoles as acyltransfer catalysts”, 2010 International Chemical Congress of Pacific Basin Societies (USA, Hawaii, 2010-12)
69. N. Hayashi, K. Ken-motsu, Y. Hasegawa, S. Okamoto, “Synthesis of C,D-ring intermediates of natural vitamin D and their analogs”, 2010 International Chemical Congress of Pacific Basin Societies (USA, Hawaii, 2010-12)
70. T. Hoshino, J. Watanabe, M. Kudo, S. Okamoto, “Folded polymers with H- and J-like stacking of conjugate units”, 2010 International Chemical Congress of Pacific Basin Societies (USA, Hawaii, 2010-12)
71. T. Kawaji, S. Okamoto, “Generation and reactivity of new low valent titanium alkoxides”, 2010 International Chemical Congress of Pacific Basin Societies (USA, Hawaii, 2010-12)
72. S. Okamoto, N. Sho-ji, T. Kawaji, C. Matsuno, “Ti(O-i-Pr)4/Me3SiCl/Mg-mediated reductive cleavage of sulfonyl amides and esters to amines or alcohols with thiols”, 2010 International Chemical Congress of Pacific Basin Societies (USA, Hawaii, 2010-12)
73. Y. Sugiyama, C. Takegoshi, S. Okamoto, “Utilization of alkyne [2+2+2] cycloaddition reactions to macromolecule synthesi”,　2010 International Chemical Congress of Pacific Basin Societies (USA, Hawaii, 2010-12).
74. 土屋裕児・石川泰之・ビシュワンハラン ベイビー・松野千加士・岡本専太郎, “N-へテロ環状カルベン-マグネシウムate錯体が触媒するアリル置換反応”, 日本化学会第９０春季年会講演予稿集[2PB-174]（大阪，2010-3）.
75. 竹越千恵・杉山雄樹・松野千加士・岡本専太郎, “[2+2+2]アルキン環化付加による高分子合成”, 日本化学会第９０春季年会講演予稿集[2PB-077]（大阪，2010-3）.
76. 正路規朗・河治健・松野千加士・岡本専太郎, “低原子価チタンによるスルホンアミド類の還元的解裂：Ts-アミドの新脱保護法”, 日本化学会第９０春季年会講演予稿集[2PB-198]（大阪，2010-3）.
77. 工藤賢・星野暢・渡邊淳一・岡本専太郎, “πユニットを有する折り畳みポリマーの合成と物性：J-like stacking”, 日本化学会第９０春季年会講演予稿集[2PB-085]（大阪，2010-3）.
78. 釼持清秀・林直斗・松野千加士・岡本専太郎, “2-アルコキシビタミンD誘導体：A環部の合成”, 日本化学会第９０春季年会講演予稿集[2PC-007]（大阪，2010-3）.
79. 河治健・才野直子・松野千加士・岡本専太郎, “[2+2+2]アルキン環化付加を鍵反応とするアントラセン類の合成”, 日本化学会第９０春季年会講演予稿集[2PB-051]（大阪，2010-3）.
80. 星野暢・工藤賢・渡邊淳一・岡本専太郎, “πユニットを有する折り畳みポリマーの合成と物性：H-like stacking”, 日本化学会第９０春季年会講演予稿集[2PB-084]（大阪，2010-3）.
81. 林直斗・河治健・松野千加士・岡本専太郎, “Cp-Free低原子価チタンによるエポキシドおよびオキセタンの還元解裂反応”, 日本化学会第９０春季年会講演予稿集[2PB-197]（大阪，2010-3）.
82. 長谷川祐介・林直斗・松野千加士・岡本専太郎, “Ti(II)反応剤によるエンイノール誘導体のメタロエン型環化反応の展開”, 日本化学会第９０春季年会講演予稿集[2PB-196]（大阪，2010-3）.
83. 林　直斗, 津波古亜希子, 中山里菜, 岡本専太郎，“oxa型C,D環部を有するステロイドおよびビタミンD誘導体の合成研究”, 日本化学会第８９春季年会講演予稿集[2PC-024]（千葉，2009-3）.
84. 境勇三, 白鳥めぐみ, 宍戸司, 渋野美寿々, 岡本専太郎，“アシル化触媒縮環ベンゾチアゾールアミンの置換基効果”, 日本化学会第８９春季年会講演予稿集[2PC-029]（千葉，2009-3）.
85. 杉山雄樹, 東亭涼, 青山嘉義, 野村彩美, 岡本専太郎，“アルキン[2 + 2 + 2]環化付加触媒Dipimp/CoCl2/Znの高分子合成反応への適用”, 日本化学会第８９春季年会講演予稿集[3PA-011]（千葉，2009-3）.
86. 渡邊淳一, 星野暢, 酒井慧斗, 中村祐介, 岡本専太郎，“折り畳み型πスタックオリゴマーおよびポリマーの合成と物性”, 日本化学会第８９春季年会講演予稿集[3PA-022]（千葉，2009-3）.
87. 星野暢, 渡邊淳一, 中村祐介, 岡本専太郎，“CH2-SiMe2-CH2をtetherとするskipped-πオリゴマーおよびポリマーの合成と物性”, 日本化学会第８９春季年会講演予稿集[3PA-023]（千葉，2009-3）.
88. 河治健, 境勇三, 何せいせい, 岡本専太郎，“CaH2/ZnX2反応剤による還元反応”, 日本化学会第８９春季年会講演予稿集[3PC-102]（千葉，2009-3）.
89. 石川泰之, 柴田佳美, 松野千加士, 岡本専太郎，“イミダゾリウム塩触媒Grignardアリル置換反応”, 日本化学会第８９春季年会講演予稿集[3PC-115]（千葉，2009-3）.
90. 大野千隼, 何せいせい, 大岩裕志, 松野千加士, 岡本専太郎，“低原子価チタン反応剤Ti(O-i-Pr)4/TMSCl/MgのMcMurryカップリングへの適用”, 日本化学会第８９春季年会講演予稿集[3PC-136]（千葉，2009-3）.
91. 何せいせい, 丹羽亮介, 大野千隼, 松野千加士, 岡本専太郎，“低原子価チタン反応剤Ti(O-i-Pr)4/TMSCl/Mgとエポキシドとの反応”, 日本化学会第８９春季年会講演予稿集[3PC-137]（千葉，2009-3）.
92. 岡本専太郎, 大久保睦美, 何せいせい, 大野千隼, “有用低原子価チタン反応剤Ti(O-i-Pr)4/TMSCl/Mg: 不飽和化合物やエポキシドとの反応”, 第１６回欧州有機化学シンポジウム, （プラハ（チェコ）, 2009-7）.
93. 何せいせい, 大野千隼, 正路規朗, 松野千加士, 岡本専太郎，“低原子価チタン反応剤Ti(O-i-Pr)4/TMSCl/Mgの開発とその反応”, 日本化学会第３回関東支部大会講演予稿集[P1-032]（千葉，2009-9）.
94. 境勇造, 白鳥めぐみ, 佐藤留美, 松野千加士, 岡本専太郎，“アシル化触媒縮環ベンゾチアゾールアミン誘導体の合成と触媒活性”, 日本化学会第３回関東支部大会講演予稿集[P1-042]（千葉，2009-9）.
95. 何せいせい, 大野千隼, 松野千加士, 岡本専太郎, “低原子価チタンアルコキシドの発生法とその反応性”, 第５６回有機金属化学討論会講演予稿集[P3C31]（大阪, 2009-9）.
96. 杉山雄樹, 竹越千恵, 才野直子, 岡本専太郎, “コバルト触媒[2+2+2]環化付加反応による高分子合成”, 第５６回有機金属化学討論会講演予稿集[P2B22]（大阪, 2009-9）.
97. 渡邊淳一，Goswami　Avijit，岡本専太郎，“アルキン環化三量化による多様な重合性化合物(モノマー)の迅速合成，”日本化学会第８８春季年会講演予稿集[2PC-065]（東京，2008-3）.
98. Goswami　Avijit，伊藤太一，岡本専太郎，“Ni触媒によるジインの選択的二量化：シクロオクタテトラエンの合成，”日本化学会第８８春季年会講演予稿集[3H2-43]（東京，2008-3）.
99. 石川泰之，境勇造，岡本専太郎，“N-ヘテロ環状カルベンCuCl触媒によるジアステレオ選択的SN2'反応，”日本化学会第８８春季年会講演予稿集[4PB-081]（東京，2008-3）.
100. 伊藤太一，Goswami　Avijit，岡本専太郎，“アルキンおよびアルキン／ニトリルの環化付加における配位子/塩化コバルト／亜鉛触媒系の反応性と位置選択性，”日本化学会第８８春季年会講演予稿集[4PB-079]（東京，2008-3）.
101. 津波古亜希子，何せいせい，三原真梨子，才野直子，岡本専太郎，“カルシウムヒドリドによるカルボニル化合物の還元反応，”日本化学会第８８春季年会講演予稿集[4PB-078]（東京，2008-3）.
102. 76) Sentaro OKAMOTO, Avijit GOSWAMI, Naoko SAINO and Taichi ITO, “NICKEL-CATALYZED DIMERIZATION AND POLYMERIZATION OF 1,6-DIYNES.” 16th International Symposium on Homogeneous Catalysis, [P360] (Florence (Italy), 2008-7).
103. Taichi Ito, Avijit Goswami, Kazuhiko Ohtaki, Kouki Kase and Sentaro Okamoto,” Synthesis of Substituted 2,2’-Bipyridines by Cobalt-Catalyzed Cycloaddition Reactions of Nitriles and 1,6-Diynes with Exclusive Regioselectivity,” 54th Symposium on Organometallic Chemistry, Japan, [PB122] (Hiroshima, 2007-10).
104. Akiko Tsuhako, Mariko Mihara, Toshio Aida, Norikatsu Kuboki, Kenji Kato, Chikashi Matsuno and Sentaro Okamoto, “Use of CaH2 as A Reductive Hydride Source for Reduction of Ketones, Aldehydes and Imines,” 54th Symposium on Organometallic Chemistry, Japan, [PB167] (Hiroshima, 2007-10).
105. A. Goswami, K. Ohtaki, K. Kase, S. Okamoto, “Synthesis of Substituted 2,2'-Bipyridines by Cobalt-Catalyzed Cycloaddition Reactions of Nitriles and a,w-Diynes with Exclusive Regioselectivity”, 14th IUPAC International Symposium on Organometallic Chemistry Directed Towards Organic Synthesis, Proc. P-349 (Nara, Japan) (2007-8).
106. S. Okamoto, K. Kase, A. Goswami, K. Ohtaki, E. Tanabe, N. Saino, “On-Demand Generation of a Catalyst for Pyridine Formation from Unactivated Nitriles and a,w-Diynes Using CoCl2-6H2O, dppe and Zn”, 14th IUPAC International Symposium on Organometallic Chemistry Directed Towards Organic Synthesis, Proc. P-348 (Nara, Japan) (2007-8).
107. 才野直子, 雨宮史尋, 田邊絵美, 松野千加士, 岡本専太郎, 「Fe,Co,Ni塩を用いる系中触媒発生法によるアルキン環化三量化反応系の探索」, 日本化学会第８６春季年会講演予稿集[1H2-46]（千葉，2006-3）.
108. 才野直子, 加瀬幸喜, 雨宮史尋, 岡本専太郎, 「2-イミノメチルピリジン/CoCl2-6H2/Zn触媒によるアルキン環化三量化反応」, 日本化学会第８６春季年会講演予稿集[1H2-47]（千葉，2006-3）.
109. 大久保睦美, 松下瞳, 岡本専太郎, 「分子内アリルチタン化反応を用いるステロイドC,D環部の立体選択的構築」, 日本化学会第８６春季年会講演予稿集[1J1-29]（千葉，2006-3）.
110. 岡本専太郎，Avijit Goswami，才野直子，加瀬幸喜，「2-イミノメチルピリヂンあるいはジフォスフィン/MXn-mH2O/Zn (M = Fe, Co, Ni)を触媒とするアルキンの環化異性化反応」，第５３回有機金属化学討論会[PB227]（大阪，2006-9）.
111. 岡本専太郎，Avijit Goswami，才野直子，加瀬幸喜，「CoCl2-6H2O/dppe/Znを触媒とするアルキンとニトリルの環化付加によるピリジンの生成」，第５３回有機金属化学討論会[PB228]（大阪，2006-9）.
112. 大久保睦美，望月彩加，松野千加士，岡本専太郎，「Ti(O-i-Pr)4/TMSCl/MgあるいはTi(O-i-Pr)4/MgBr2/Mgより発生する低原子価チタンの反応性」，第５３回有機金属化学討論会[PB238]（大阪，2006-9）.
113. S. Okamoto, N. Saino, K. Kase, F. Mamemiya and E. Tanabe, “IRON- and COBALT-BASED HIGHLY PRACTICAL INSTANT CATALYST FOR CYCLOTRIMERIZATION OF ALKYNES TO SUBSTITUTED BENZENS”, 1st European Chemistry Congress, Proc. P.55 [C-PO-101] (Budapest, Hungary) (2006-8).
114. K. Kase, S. Tominaga, K. Shimoda, N. Saino and S. Okamoto, “Allylic and propargylic substitution reactions with Grignard reagents catalyzed by N-heterocyclic carbene-CuCl complexes”, PACIFICHEM 2005, Sesion 699, Program#1155 (Honolulu, Hawaii) (2005-12).
115. S. Okamoto, N. Saino and D. Kogure, “Intramolecular cyclotrimerization of triynes catalyzed by an N-heterocyclic carbene-CoCl2 or –FeCl3/Zn reagent”, PACIFICHEM 2005, Sesion 699, Program#1163 (Honolulu, Hawaii) (2005-12).
116. 90) T. Aida, N. Kuboki, W. Uchikawa, C. Matsuno and S. Okamoto, “Use of CaH2 as a reductive hydride source: Reduction of ketones and imines with CaH2/ZnX2 in the presence of Lewis acid”, PACIFICHEM 2005, Sesion 861, Program#1752 (Honolulu, Hawaii) (2005-12).
117. N. Saino, A. Kuno, T. Kamachi and S. Okamoto, “Co(acac)3-catalyzed benzyl-alkynyl coupling reaction”, PACIFICHEM 2005, Sesion 861, Program#1754 (Honolulu, Hawaii) (2005-12).
118. M. Ohkubo, W. Uchikawa, A. Nakano, T. Shirato and S. Okamoto, “Stereoselective construction of 3a-methylhydroindenes by sequential Ti(II)-mediated cyclization/allylation and ring closing metathesis”, PACIFICHEM 2005, Sesion 861, Program#1780 (Honolulu, Hawaii) (2005-12).
119. 才野直子，木暮大介，岡本専太郎，「N-ヘテロ環状カルベンCo触媒アルキン環化三量化反応」，日本化学会第８５春季年会講演予稿集[1B3-42]（横浜，2005-3）.
120. 相田俊夫，久保木哲功，加藤健司，内川渉，松野千加士，岡本専太郎，「CaH2の還元ヒドリドとしての利用：CaH2/ZnX2/Lewis酸によるケトンとイミンの還元」，日本化学会第８５春季年会講演予稿集[1B3-34]（横浜，2005-3）.
121. 才野直子，蒲池拓，久野亜希子，松野千加士，岡本専太郎，「Co触媒によるアルキニル‐ベンジルカップリング反応」，日本化学会第８５春季年会講演予稿集[2PC-216]（横浜，2005-3）.
122. 大久保睦美，上河原亜希，横山貴宣，松野千加士，岡本専太郎，「アレニルチタン化合物と電子不足アルケンとの共役付加反応とその立体化学」，日本化学会第８５春季年会講演予稿集[2PC-208]（横浜，2005-3）.
123. 岡本専太郎，「N-ヘテロ環状カルベン/CoCl2あるいはFeCl3/Zn触媒によるトリインの分子内環化異性化反応」，第１３回IUPACシンポジウム有機合成指向有機金属化学国際会議講演予稿集[P-267] (ジュネーブ，スイス) (2005-7).
124. 岡本専太郎，才野直子，木暮大介，松野千加士，「鉄およびコバルト触媒によるトリインの分子内環化三量化反応」，第５２回有機金属化学討論会[PB223]（京都，2005-9）.
125. 99) 岡本専太郎，富永智史，大井幸直，加藤利雄，安徳根，「N-へテロ環状カルベン-CuCl触媒によるγ選択的Grignardアリル置換反応」，第５１回有機金属化学討論会[B205]（東京，2004-10）.

Lectures

1. [講演] 岡本専太郎,「均一系低原子価チタン反応剤の発生とその触媒的利用」，触媒学会横浜地区講演会「触媒化学の多様化と深化―触媒研究拠点の形成に向けた取り組みから見えるもの―」，2014年3月1日（神奈川大学）.
2. [講演] 岡本専太郎, 「環化付加反応触媒の開発と重合反応への利用」, 2013年11月20日（東京農工大学）.
3. [講演] 岡本専太郎，“高分子材料のシーズ、高分子を使って一列分のH-およびJ-スタックπ―π相互作用を見る“, 高分子学会 第53回湘南地区懇話会 (2012年6月13日, 神奈川大学湘南平塚キャンパス).
4. [講演]岡本専太郎，「実用的なアルキン環化付加触媒系の開発とその合成利用」，触媒学会横浜地区講演会「金属錯体を基盤とした触媒反応の展開」，2010年10月23日（神奈川大学）

200220032004
200520062007
200820092010
201120122013
20142015

科学技術振興機構（JST）SCORE（拠点都市環境整備型）GAPファンド
令和３年度（2021年度）


小笠原敏晶記念財団　研究助成金
アルキン環化付加重合による実践的高分岐高分子合成法の開発と高分子有機EL材料への応用
令和3年度〜令和4年度 (2021-2022)


科学研究費補助金　基盤研究C
1,6-ジインの環化重合による環状ポリエンの合成および物性と利用
令和3年度〜令和5年度 (2021-2023)


科学研究費補助金　基盤研究C
低原子価チタンの発生法を基盤とする精密合成手法の開発
平成29年度〜平成31年度

科学研究費補助金　挑戦的萌芽研究
折り畳みπスタック高分子を基盤とする一重項分裂材料の探索
平成26年度〜平成２7年度

科学研究費補助金　基盤研究B
触媒的環化付加反応を基盤とする新しい精密重合反応の開発
平成25年度〜平成２7年度

科学研究費補助金　基盤研究C
新低原子価チタン反応剤による炭素―酸素，窒素―硫黄結合解裂反応の開発と合成利用
平成22年度〜平成２4年度

（財）高橋産業経済研究財団　研究奨励金
触媒的ギ酸分解による水素の発生法および還元反応の開発
平成2１年度

科学研究費補助金　基盤研究C
低原子価チタンの新発生法と結合生成・解裂反応への利用
平成１９年度〜平成２０年度

科学研究費補助金　基盤研究C
アザチタナサイクルの生成を基盤とするα-分岐アミン類の立体選択的合成
平成１６年度〜平成１７年度

科学研究費補助金　基盤研究C
２価チタンによる連続分子間-分子内カップリング：一段階多結合生成反応
平成１４年度〜平成１５年度

横浜学術教育振興財団　研究費助成
イミン—チタン錯体を用いる光学活性アミン類の合成法開発
平成１４年度

科学研究費補助金　基盤研究C
イミン類と高選択的に反応するキラルホモエノラ−ト等価体の開発とその利用
平成１２年度〜平成１３年度

平成１０年度文部省科学研究費・一般（Ｃ）に採用されたが、海外長期出張のため辞退

科学研究費補助金　基盤研究C
アセチレンおよびオレフィンのチタン錯体を経由する環状カルボニル化合物の新合成法
平成７年度〜平成８年度

有機合成科学協会・東レ研究企画賞
低原子価チタン反応剤によるアミノ酸を原料とする光学活性含窒素ヘテロ環状化合物の実用的合成法の開発
平成８年度

科学研究費補助金　奨励研究（Ａ）
抗潰瘍性プロスタグランジン誘導体の効率的合成法の開発
平成２年度

Dr. Toshiharu Yoshino

講師：吉野　利治　博士　（薬学博士） [第一三共株式会社　研究統括部　研究企画グループ]
日時：2014年12月19日（金）16時30分～
会場：23号館306講堂
講演題目：新規抗凝固薬・経口FXa阻害剤エドキサバンの創製
...

Professor Vincent Gandon

日 程：2013年4月5日（金）　15：00～16：30
場所：23-210号室
講師：Professor Vincent Gandon
所属：The Institut Universitaire de France (IUF)
演題：Cationic Gallium Complexes for Molecular Catalysis
...

Professor Martin Kotora

講演題目：Synthesis of new bipyridine N,N’-dioxides as catalysts for allylation of aldehydes
講師：Professor Martin Kotora　（マーチン・コトラ）
Department of Organic and Nuclear Chemistry, Faculty of Science, Charles University
Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
日時：2008年9月12日（金）　15：00-16：00
...

1. Sentaro Okamoto, Takeshi Yamada, Takaya Uchida, Nana Kikuta, and Yu-ya Kimura,
   "Dual-Mode Coupling Copolymerization of Aryl Dialdehyde and Alkynylaldehyde Monomers via Concurrent McMurry Olefination and Alkyne [2+2+2] Cycloaddition Trimerization Reactions Mediated by a Low-Valent Titanium Reagent",
   Polymer, 2021, 214, 123344. Link
2. Kouta Ibe, Takeshi, Yamada, Sentaro Okamoto, "Synthesis and Vitamin D Receptor Affinity of 16-Oxa Vitamin D3 Analogues", Organic & Biomolecular Chemistry, 2019, 17, 10188-10200. [Link]
3. Sentaro Okamoto, Takeshi Yamada, Yu-ki Tanabe, Masaki Sakaia, "Alkyne [2+2+2] Cyclotrimerization Catalyzed by a Low-Valent Titanium Reagent Derived from CpTiX3(X = Cl, O-i-Pr), Me3SiCl, and Mg or Zn”, Organomettalics, 2018, 37, 4431-4438.[Link]
4. Suchithra Madhavan, Hiromasa Takagi, Shunpei Fukuda and Sentaro Okamoto,"Low−valent titanium−catalyzed deprotection of allyl- and propargyl-carbamates to amines”,Tetrahedron Letters, 2016, 57, 2074-2077. [Link]
5. Sentaro Okamoto, “Synthetic Reactions Using Low-Valent Titanium Reagents Derived from Ti(OP)4 or CpTiX3 (X = O-i-Pr or Cl) in the Presence of Me3SiCl and Mg”, The Chemical Record, 2016, 16, 857-872. [Link]
6. Kouta Ibe, Haruko Aoki, Hiromasa Takagi, Kiyohide Ken-mochi, Yu-suke Hasegawa, Naoto Hayashi, and Sentaro Okamoto, "Preparation of 2-hydroxy A-ring precursors for synthesis of vitamin D3 analogues from lyxose”,Tetrahedron Letters, 2015, 56, 2015, 56, 2315-2318[Link]..
7. Naoto Takekoshi, Kenji Miyashita, Noriaki Shoji, and Sentaro Okamoto, "Generation of A Low-Valent Titanium from Titanatrane and Its Catalytic Reactions: Radical Ring Opening of Oxetanes", Adv. Synth. Catal. 2013, 355, 2151-2157. [Link]
8. Tsuyoshi Kawaji, Noriaki Shoji, Kenji Miyashita, Sentaro Okamoto, "Non-Cp Titanium Alkoxide-Based Homolytic Ring-Opening of Epoxides by An Intramolecular Hydrogen Abstraction in beta-Titanoxy Radical Intermediates", Chemical Communications, 2011, 47, 7857-7859.
9. Noriaki Shohji, Tsuyoshi Kawaji, Sentaro Okamoto, "Ti(O-i-Pr)4/Me3SiCl/Mg-Mediated Reductive Cleavage of Sulfonamides and Sulfonates To Amines and Alcohols", Organic Letters, 2011, 13, 2626-2629.
10. Sentaro Okamoto, Jing-Qian He, Chihaya Ohno, Yuhji Oh-iwa, and Yuhki Kawaguchi, "McMurry coupling of aryl aldehydes and imino pinacol coupling mediated by Ti(O-i-Pr)4/Me3SiCl/Mg reagent", Tetrahedron Letters, 2010, 51, 387-390.
11. Mutsumi Ohkubo, Sayaka Mochizuki, Takeshi Sano, Yuuki Kawaguchi, Sentaro Okamoto, "Selective Cleavage of Allyl and "Propargyl Ethers to Alcohols Catalyzed by Ti(O-i-Pr)4/MXn/Mg", Oragnic Letters, 2007, 9, 773-776.
12. Sentaro Okamoto, Tom Livinghouse, "Titanium-Catalyzed Cycloisomerizatrion of 1,6-Dienes. Regio- and Stereoselective Synthesis of exo-Methylenecycloalkanes", Organometallics, 2000, 8, 1449-1451.
13. Sentaro Okamoto, Tom Livinghouse, "Titanium(IV) Aryloxide Catalyzed Cyclization Reactions of 1,6- and 1,7-Dienes", J. Am. Chem. Soc., 2000, 122, 1223-1224.

1. Nana Kikuta, Takahiro SHindo, Yu-ki Sugiyma, Takeshi Yamada, Sentaro Okamoto, "Cobalt-Catalyzed [2 + 2 + 2] Cycloaddition Copolymerization of Diyne and Internal Alkyne Monomers to Highly Branched Polymers", Polymer, 2021, 212, 123133. [Link]
2. Yu-ki Sugiyama and Sentaro Okamoto, "Catalytic [2 + 2 + 2] Cycloaddition Polymerization of Diyne–Nitrile Monomers in the Presence of CoCl2-6H2O/Diphosphine/Zn”, J. Polym. Sci. A: Polym. Chem. 2016, 54, 345-351.[Link].
3. Tetsuya Sakurada, Yu-ki Sugiyama, Sentaro Okamoto “Cobalt-Catalyzed Cross Addition of Silylacetylenes to Internal Alkynes,” J. Org. Chem. 2013, 78, 3583-3591.
4. Sentaro Okamoto, Yu-ki Sugiyama, “From Development of Catalysts for Alkyne and Alkyne/Nitrile [2 + 2 + 2] Cycloaddition Reactions to Their Use in Polymerization Reactions,” SYNLETT, 2013, 1044-1060. (Account)
5. Yu-ki Sugiyama, Takuma Kariwa, Tetsuya Sakurada, Sentaro Okamoto, “Remarkable Activation of An Alkyne [2 + 2 + 2] Cycloaddition Catalyst, 2-Iminomethylpyridine (Dipimp)/CoCl2-6H2O/Zn, by a Phthalate Additive” SYNLETT2012, 23, 2549-2553.
6. Sentaro Okamoto, “Synthesis of 2,2’-Bipyridines by Transition Metal-Catalyzed Alkyne/Nitrile [2 + 2 + 2] Cycloaddition Reactions,” Heterocycles, 2012, 85, 1579-1602. (Review)
7. Yu-ki Sugiyama, Rei Kato, Tetsuya Sakurada and Sentaro Okamoto, "Chain-Growth Cycloaddition Polymerization via a Catalytic Alkyne [2 + 2 + 2] Cyclotrimerization Reaction and Its Application to One-shot Spontaneous Block Copolymerization", J. Am. Chem. Soc. 2011, 133, 9712-9715.
8. Yu-ki Sugiyama, Sentaro Okamoto, "Regioselective Synthesis of Substituted Pyridines and 2,2'-Dipyridines by a Cobalt-Catalyzed [2 + 2 + 2] Cycloaddition of alfa,omega-diynes with Nitriles", Synthesis2011, 2247-2254.
9. Jun-ichi Watanabe, Yu-ki Sugiyama, Ayami Nomura, Suzumi Azumatei, Avijit Goswami, Naoko Saino, Sentaro Okamoto, "Quick Access to Diverse Polymerizable Molecules (a Monomer Library) by Catalytic [2 + 2 + 2] Cycloaddition Reactions of Functionalized Alkynes", Macromolecules, 2010, 43, 2213-2218.
10. Naoko Saino, Tsuyoshi Kawaji, Taichi Ito, Yuko Matsushita and Sentaro Okamoto, "Synthesis of substituted anthracenes, pentaphenes and trinaphthylenes via alkyne cyclotrimerization reaction", Tetrahedron Letters, 2010, 51, 1313-1316.
11. Avijit Goswami, Kazuhiko Ohtaki, Kouki Kase, Taichi Ito,　Sentaro Okamoto, “Synthesis of Substituted 2,2'-Bipyridines and 2,2':6,2"-Terpyridines by Cobalt-Catalyzed Cycloaddition Reactions of Nitriles and alfa,omega-Diynes with Exclusive Regioselectivity" Advanced Synthesis & Catalysis, 2008, 350, 143-152.
12. Avijit Goswami, Taichi Ito and Sentaro Okamoto, "Efficient Activation of 2-Iminomethylpyridine/Cobalt-Baesd Alkyne [2 + 2 + 2] Cycloaddition Catalyst by Addition of a Silver Salt" , Advanced Synthesis & Catalysis, 2007, 349, 2368-2374.
13. Kouki Kase, Avijit Goswami, Kazuhiko Ohtaki, Emi Tanabe, Naoko Saino, Sentaro Okamoto, "On-Demand Generation of an Efficient Catalyst for Pyridine Formation from Unactivated Nitriles and alfa,omega-Diynes Using CoCl2-6H2O, dppe and Zn", Organic Letters, 2007, 9, 931-934.
14. Naoko Saino, Fumihiro Amemiya, Emi Tanabe, Kouki Kase and Sentaro Okamoto, "A Highly Practical Instant Catalyst for Cyclotrimerization of Alkynes to Substituted Benzenes", Organic Letters, 2006, 8, 1439-1442.
15. Akiko Kuno, Naoko Saino, Taku Kamachi, and Sentaro Okamoto, "Cobalt-catalyzed benzyl-alkynyl coupling", Tetrahedron Letters, 2006, 47, 2591-2594.
16. Naoko Saino, Daisuke Kogure and Sentaro Okamoto, "Intramolecular Cyclotrimerization of Triynes Catalyzed by N-Heterocyclic Carbene-CoCl2/Zn or -FeCl3/Zn", Organic Letters, 2005, 7, 3065-3067.
17. Taku Kamachi, Akiko Kuno, Chikashi Matsuno and Sentaro Okamoto, "Cobalt-catalyzed mono-coupling of R3SiCH2MgCl with 1,2-dihalogenoethylene: A general route to gamma-substituted (E)-allylsilanes", Tetrahedron Letters, 2004, 45, 4677-4679.

1. Yu-ki Sugiyama, Shiori Heigozono, Kazuhiro Tamura, Sentaro Okamoto, "Iron-Catalyzed Reductive Metalation–Allylation and Metalative Cyclization of 2,3-Disubstituted Oxetanes and Their Stereoselectivity”, Synthesis, 2016, 48, 2823-2828.[Link]
2. Yu-ki Sugiyama, Shiori Heigozono, and Sentaro Okamoto, "Iron-Catalyzed Reductive Magnesiation of Oxetanes to Gen-erate (3-Oxidopropyl)magnesium Reagents”,Organic Letters, 2014, 16, 6278-6281.
3. Naoko Saino, Daisuke Kogure, Kouki Kase and Sentaro Okamoto, "Iron-catalyzed intramolecular cyclotrimerization of triynes to annulated benzenes", J. Organometallic Chemistry, 2006, 691, 3129-3136.
4. Naoko Saino, Daisuke Kogure and Sentaro Okamoto, "Intramolecular Cyclotrimerization of Triynes Catalyzed by N-Heterocyclic Carbene-CoCl2/Zn or -FeCl3/Zn", Organic Letters, 2005, 7, 3065-3067.

1. Yuhsaku Okabe, Takeshi Yamada, and Sentaro Okamoto
   "Nickel-Catalysed Cycloaddition Oligomerization of 1,6-Diynes to Medium-Size Cyclic Polyenes",
   Polymer Chemistry, 2022, accepted. [Link]
2. Avijit Goswami, Taichi Ito, Naoko Saino, Kouki Kase, Chikashi Matsuno and Sentaro Okamoto, "Selective Dimerization of 1,6 Diynes Catalyzed by Ionic Liquid-Supported Nickel Complexes in An Ionic Liquid/Toluene Biphasic System", Chem. Commun. 2009, 439-441.

1. Akiko Tsuhako, Daisuke Oikawa, Kazushi Sakai, Sentao Okamoto, "Copper-catalyzed intramolecular hydroamination of allenylamines to 3-pyrrolines or 2-alkenylpyrrolidines" Tetrahedron Letters, 2008, 49, 6529-6532.
2. Sentaro Okamoto, Satoshi Tominaga, Naoko Saino, Kouki Kase and Kentaro Shimoda, "Allylic Substitution Reactions with Grignard Reagents Catalyzed by Imidazolium and 4,5-Dihydroimidazolium Carbene-CuCl Complexes", J. Organometallic Chemistry, 2005, 690, 6001-6007 and see also Erratum.
3. Satoshi Tominaga, Yukinao Oi, Toshio Kato, Duk Keun An and Sentaro Okamoto, "gamma-Selective allylic substitution reaction with Grignard reagents catalyzed by copper N-heterocyclic carbene complexes and its application to enantioselective synthesis", Tetrahedron Letters, 2004, 45, 5585-5588.

1. Takeshi Hanazawa, Akiko Koyama, Kunio Nakata, Sentaro Okamoto, Fumie Sato, "New Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling between A-ring and C,D-ring Parts", J. Org. Chem., 2003, 68, 9767-9772.
2. Takeshi Hanazawa, Akiko Koyama, Takeshi Wada, Eiko Morishige, Sentaro Okamoto, Fumie Sato, "Efficient Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling", Organic Letters, 2003, 5, 523-525 and see also Organic Letters, 2003, 5, 3167 (addition and corrections).
3. Takeshi Hanazawa, Takeshi Wada, Tomoko Masuda, Sentaro Okamoto, and Fumie Sato, "Novel Synthetic Approach to 19-nor-1alfa,25-Dihydroxyvitamin D3 and its Derivatives by the Suzuki-Miyaura Coupling in Solution and on Solid Support", Organic Letters, 2001, 3, 3975-3977.
4. Sentaro Okamoto, Naoya Ono, Kousuke Tani, Yukio Yoshida, Fumie Sato, "Conversion of Allyl-2-Ynoates to Alk-2-Ynoic Acids Using Morpholine and Palladium(0)-Bis(diphenylphosphino)Alkane Catalyst; Synthesis of 2,2,3,3-Tetradehydro PGE1", J. Chem.Soc., Chem. Commun., 1994, 279-280.
5. Kousuke Tani, Naoya Ono, Sentaro Okamoto, Fumie Sato, "Palladium(0)-Catalysed Transfer Hydrogenation of Alkynes to cis-Alkenes with HCO2H-NEt3", J. Chem. Soc., Chem. Commun., 1993, 386-387.

1. Yu-ki Sugiyama, Shiori Heigozono, and Sentaro Okamoto, "Iron-Catalyzed Reductive Magnesiation of Oxetanes to Gen-erate (3-Oxidopropyl)magnesium Reagents”, Organic Letters, 2014, accepted.
2. Ryosuke Nomura, Yuji Tsuchiya, Hiroyuki Ishikawa, Sentaro Okamoto “Grignard allylic substitution reaction catalyzed by 1,2,3-triazol-5-ylidene magnesium complexes”, Tetrahedron Letters, 2013, 54, 1360-1363
3. Sentaro Okamoto, Hiroyuki Ishikawa, Yoshimi Shibata, Yu-ichiro Suhara, "Grignard allylic substitution catalyzed by imidazol-2-ylidene- and imidazol-4-ylidene-magnesium complexes", Tetrahedron Letters, 2010, 51, 5704-5707.
4. Akiko Tsuhako, Jing-Qian He, Mariko Mihara, Naoko Saino and Sentaro Okamoto, "Carbonyl reduction with CaH2 and R3SiCl catalyzed by ZnCl2" Tetrahedron Letters, 2007, 47, 9120-9123.
5. Toshio Aida, Norikatsu Kuboki, Kenji Kato, Wataru Uchikawa, Chikashi Matsuno and Sentaro Okamoto, "Use of CaH2 as a reductive hydride source: Reduction of ketones and imines with CaH2/ZnX2 in the presence of a Lewis acid", Tetrahedron Letters, 2005, 46, 1667-1669.

1. Suchithra Madhavan and Sentaro Okamoto, "Silica-supported silver as a green and sustainable catalyst for [3+2] cycloaddition reaction of azomethine ylides with 2’-hydroxychalcone derivatives”,ChemCatChem, 2018, 10, 2014-2018.[Link]

1. Yuhsaku Okabe, Takeshi Yamada, and Sentaro Okamoto
   "Nickel-Catalysed Cycloaddition Oligomerization of 1,6-Diynes to Medium-Size Cyclic Polyenes",
   Polymer Chemistry, 2022, accepted. [Link]
2. Sentaro Okamoto, Yusuke Naito, and Ryosuke Nomura,
   ”Synthesis of Folded H-Stacking Skipped p Polymers Consisting of Different 2-Substituted Trimethylene Tethering Units and Their Optical and Conductive Property",
   Polymer,2021, 230, 124037. [Link]
   
3. Sentaro Okamoto, Takeshi Yamada, Takaya Uchida, Nana Kikuta, and Yu-ya Kimura,
   "Dual-Mode Coupling Copolymerization of Aryl Dialdehyde and Alkynylaldehyde Monomers via Concurrent McMurry Olefination and Alkyne [2+2+2] Cycloaddition Trimerization Reactions Mediated by a Low-Valent Titanium Reagent",
   Polymer, 2021, 214, 123344. Link
4. Nana Kikuta, Takahiro SHindo, Yu-ki Sugiyma, Takeshi Yamada, Sentaro Okamoto, "Cobalt-Catalyzed [2 + 2 + 2] Cycloaddition Copolymerization of Diyne and Internal Alkyne Monomers to Highly Branched Polymers", Polymer, 2021, 212, 123133. [Link]
5. Sentaro Okamotoa, Masaru Kudo, Ryosuke Nomura, Ryota Moriai, Yusuke Naito, Shigeaki Funyu, Ken-ich Ishitsuka, Naoki Asano, "Synthesis and properties of folded π-stacking polymers having J-aggregative, alternative, and staggered assembling structures”, Polymer,2016, 97, 550-558. [Link]
6. Yu-ki Sugiyama and Sentaro Okamoto, "Catalytic [2 + 2 + 2] Cycloaddition Polymerization of Diyne–Nitrile Monomers in the Presence of CoCl2-6H2O/Diphosphine/Zn”, J. Polym. Sci. A: Polym. Chem. 2016, 54, 345-351.[Link].
7. Ryota Moriai, Yu-suke Naito, Ryosuke Nomura, Shigeaki Funyu, Ken-ich Ishitsuka, Naoki Asano and Sentaro Okamoto, "Design and synthesis of 2-(1,3-dialkoxy-2-methylpropan-2-yl)-1,3-diarylpropanes as tethering units for folded H-stacking polymers", Tetrahedron Lett., 2014, 55, 2649-2653.
8. Ryosuke Nomura, Ryota Moriai, Masaru Kudo, Tohru Hoshino, Jun-ichi Watanabe, Shigeaki Funyu, Ken-ich Ishitsuka, and Sentaro Okamoto “Synthesis and Properties of Through-Space Conjugated Polymers Based on pi–pi Stacked 1,3-Biarylpropane Tethering Units” J. Polymer Science Part A: Polymer Chemistry, 2013, 51, 3412-3419.
9. Tohru Hoshino, Jun-ichi Watanabe, Masaru Kudo, Edo Sakai, Shigeaki Funyu, Ken-ich Ishitsuka, and Sentaro Okamoto, “Synthesis of [—CH2C(CO2Et)2CH2Ar—]n Polymers and Their Unique Optical Properties by Through-Space Interactions between Ar and C=O Groups”, J. Polymer Science Part A: Polymer Chemistry, 2012, 50, 1707-1716.
10. Yu-ki Sugiyama, Rei Kato, Tetsuya Sakurada and Sentaro Okamoto, "Chain-Growth Cycloaddition Polymerization via a Catalytic Alkyne [2 + 2 + 2] Cyclotrimerization Reaction and Its Application to One-shot Spontaneous Block Copolymerization", J. Am. Chem. Soc. 2011, 133, 9712-9715.
11. Jun-ichi Watanabe, Tohru Hoshino, Yu-suke Nakamura, Edo Sakai and Sentaro Okamoto, "Folded H-Stacking Polymers by "Conformational Control with 2-Substituted Trimethylene Tethers", Macromolecules, 2010, 43, 6562-6569.
12. Jun-ichi Watanabe, Yu-ki Sugiyama, Ayami Nomura, Suzumi Azumatei, Avijit Goswami, Naoko Saino, Sentaro Okamoto, "Quick Access to Diverse Polymerizable Molecules (a Monomer Library) by Catalytic [2 + 2 + 2] Cycloaddition Reactions of Functionalized Alkynes", Macromolecules, 2010, 43, 2213-2218.
13. Sentaro Okamoto, Jing-Qian He, Chihaya Ohno, Yuhji Oh-iwa, and Yuhki Kawaguchi, "McMurry coupling of aryl aldehydes and imino pinacol coupling mediated by Ti(O-i-Pr)4/Me3SiCl/Mg reagent", Tetrahedron Letters, 2010, 51, 387-390.
14. Avijit Goswami, Taichi Ito, Naoko Saino, Kouki Kase, Chikashi Matsuno and Sentaro Okamoto, "Selective Dimerization of 1,6-Diynes Catalyzed by Ionic Liquid-Supported Nickel Complexes in An Ionic Liquid/Toluene Biphasic System", Chem. Commun. 2009, 439-441.

1. Jing-Qian He, Daisuke Shibata, Chihaya Ohno, Sentaro Okamoto, "Two-step allylic carbon insertion between ketone carbonyl and carbons giving a-quaternary a-vinyl ketones", Tetrahedron Letters, 2008, 49, 6724-6727.
2. Akiko Tsuhako, Daisuke Oikawa, Kazushi Sakai, Sentao Okamoto, "Copper-catalyzed intramolecular hydroamination of allenylamines to 3-pyrrolines or 2-alkenylpyrrolidines" , Tetrahedron Letters, 2008, 49, 6529-6532. [Link]
3. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "An efficient synthesis of optically active (2R,3R)-2-methyl-3-[(1R)-1-methylprop-2-enyl]cyclopentanone, a useful chiral building block for synthesis of vitamin D and steroids", Tetrahedron Letters, 2003, 44, 2113-2115.
4. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "A concise asymmetric synthesis of 5,8-disubstituted indolizidine alkaloids. Total synthesis of (-)-indolizidine 209B", Tetrahedron Letters, 2002, 43, 8635-8637.
5. Christophe Delas, Sentaro Okamoto and Fumie Sato, "Highly selective addition reaction of organotitaniums with Garner's aldehyde. Easy preparation of optically active allylic, allenylic, homoallylic and homopropargylic alcohols.", Tetrahedron Lett., 2002, 43, 4373-4375.
6. Yongcheng Song, Sentaro Okamoto, and Fumie Sato, "Highly Stereoselective Asymmetric Construction of an Acyclic Carbon Skeleton Having Two Adjacent Alkyl Substituents by Michael Addition of OpticallyActiveAllenyltitaniums to Alkylidenemalonates", Organic Letters, 2001, 3, 3543-3545.
7. Sentaro Okamoto, Shin-ichiro Matsuda, Duk Keun An, Fumie Sato, "General synthetic method for preparation of optically active propargyl and allenylstannanes", Tetrahedron Letters, 2001, 42, 6323-6326.
8. Sentaro Okamoto, Fumie Sato, "A Highly Efficient and Practical Preparation of 2,4-Pentadienyltitaniums and their gamma-Selective Addition Reaction with Aldehydes and Ketones", J. Organomet. Chem., 2001, 624, 151-156.
9. Xin Teng, Takeshi Wada, Sentaro Okamoto, Fumie Sato, 2One-pot preparation of 2-substituted and 2,3-disubstituted furans from 2-alkynaltetramethylethylene acetals and aldehydes using a divalent titanium reagent Ti(O-i-Pr)4/2 i-PrMgX", Tetrahedron Lett.2001, 42, 5501-5503.
10. Sentaro Okamoto, Kohki Fukuhara, Fumie Sato, "An Efficient and Practical Preparation of OpticallyActivesyn-1-Vinyl-2-amino Alcohol Derivatives by the Regio- and Diastereoselective Addition Reaction of (alfa-Alkoxyallyl) titaniums with Chiral Imines. Formal Synthesis of Statine", Tetrahedron Letters, 2000, 41, 5561-5565.
11. Takeshi Hanazawa, Sentaro Okamoto, Fumie Sato, "Preparation of Titanated Alkoxyallenes from 3-Alkoxy-2-propyn-1-yl Carbonates and ( eta2-Propene)Ti(O-i-Pr)2 as an Efficient Ester Homoaldol Equivalent", Organic Letters, 2000, 2, 2369-2371.
12. Xin Teng, Yuuki Takayama, Sentaro Okamoto, and Fumie Sato, "Development of a Chiral Propionaldehyde Homoenolate Equivalent Which Reacts with Imines with Excellent Stereoselectivity. Efficient and Practical Synthesis of OpticallyActive γ-Amino Carbonyl Compounds", J. Am. Chem. Soc., 1999, 121, 11916-11917.
13. Duk Keun An, Koichiro Hirakawa, Sentaro Okamoto, Fumie Sato, "Electrophilic Amination of Racemic and Non-racemic Allenyltitaniums. One-pot Synthesis of α-Hydrazino-alkynes from Propargylic Alcohol Derivatives", Tetrahedron Letters, 1999, 40, 3737-3740.
14. Sentaro Okamoto, Duk Keun An, Fumie Sato, "Synthesis of OpticallyActiveAllenyltitaniums Having Axial Chirality by the Reaction of OpticallyActivePropargylic Compounds with a Ti(O-i-Pr)4/2i-PrMgCl Reagent", Tetrahedron Letters, 1998, 39, 4551-4554.
15. Duk Keun An, Sentaro Okamoto, Fumie Sato, "Synthesis of Chiral Alkynes Having 2H or Halogen at the Secondary or Tertiary Propargylic Stereogenic Center by Hydrolysis and Halogenolysis of OpticallyActiveAllenyltitaniums Having Axial Chirality", Tetrahedron Letters, 1998, 39, 4555-4558.
16. Duk Keun An, Sentaro Okamoto, Fumie Sato, "Efficient One-Pot Synthesis of Propargylstannanes from Propargylic Alcohol Derivatives via Allenyltitaniums", Tetrahedron Letters, 1998, 39, 4861-4864.
17. Teng Xin, Sentaro Okamoto, Fumie Sato, "1,5-Asymmetric Induction in Addition Reaction of Aldehydes with Chiral Allyltitaniums Having an Amino Group at theStereogenicCenter. Synthesis of OpticallyActive2,6-cis-Disubstituted Piperidines", Tetrahedron Letters, 1998, 39, 6927-6930.
18. Shin-ichiro Matsuda, Duk Keun An, Sentaro Okamoto, Fumie Sato, "An Efficient Method for Conversion of 1-Alken-3-yl Carbonates to 1-Alkenes and 3-Chloro-1-alkenes via Allyltitaniums", Tetrahedron Letters, 1998, 39, 7513-7516.
19. Xin Teng, Aleksandr Kasatkin, Yasufumi Kawanaka, Sentaro Okamoto, Fumie Sato, "Synthesis of Chiral Allyltitaniums Having an Amino Group at the C-4 Position and Their Diastereoselective Addition Reaction with Aldehydes", Tetrahedron Letters, 1997, 38, 8977-8980.
20. Sentaro Okamoto, Hiroyoshi Sato, Fumie Sato, "Highly Efficient Synthesis of Alka-1,3-dien-2-yltitanium Compounds from Alka-2,3-dienyl Carbonates. A New, Practical Synthesis of 1,3-Dienes and 2-Iodo-1,3-dienes", Tetrahedron Letters,1996, 37, 8865-8868.
21. Aleksandr Kasatkin, Takashi Nakagawa, Sentaro Okamoto, Fumie Sato,　"New, Efficient Method for the Synthesis of Allyltitanium Compounds from Allyl Halides or Allyl Alcohol Derivatives via Oxidative Addition. A Highly Efficient and Practical Synthesis of Homoallyl Alcohols",　 J. Am. Chem. Soc.,1995, 117, 3881-3882.

1. Kwangho Kim, Sentaro Okamoto, Yuuki Takayama, Fumie Sato, "Asymmetric synthesis of stereodefined alfa-alkyl-gamma-benzyloxymethyl-beta-trimethylsilyl-gamma-butyrolactones that serve as an efficient precursor for constructing carbon skeletons having a tertiary or quaternary stereogenic center", Tetrahedron Letters, 2002, 43, 4237-4239.
2. Takeshi Hanazawa, Hajime Inamori, Tomoko Masuda, Sentaro Okamoto, Fumie Sato, "Efficient and Practical Synthesis of the A-Ring Precursor of 19-nor-1alfa,25-Dihydroxyvitamin D3 and its 13C- or 2H-Labeled Derivative", Organic Letters2001, 3, 2205-2207.
3. Takeshi Hanazawa, Sentaro okamoto, Fumie Sato, "Chemical synthesis of optically active cis-cyclohexa-3,5-diene-1,2-diols and their 5-2H-derivatives", Tetrahedron Lett. 2001, 42, 5455-5457.
4. Kwangho Kim, Sentaro Okamoto, Fumie Sato, "Regiocontrol of Radical Cyclization by Lewis Acids. Efficient Synthesis of OpticallyActive Functionalized Cyclopentanes and Cyclohexanes", Organic Letters2001, 3, 67-69.
5. Masaaki Shirai, Sentaro Okamoto, Fumie Sato, "Practical Synthesis of OpticallyActiveBicyclic Oxazolidinylpiperidines, Chiral Building Blocks for Preparing 1-Deoxyazasugars, from Serine", Tetrahedron Letters, 1999, 40, 5331-5332.
6. Sentaro Okamoto, Masayuki Iwakubo, Katsushige Kobayashi, Fumie Sato, "Efficient and Practical Method for Synthesizing N-Heterocyclic Compounds Using Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by Ti(O-i-Pr)4/2 i-PrMgX Reagent. Synthesis of Quinolones, Pyrroles, Indoles, and OpticallyActive N-Heterocycles Including Allopumiliotoxin Alkaloid 267A", J. Am. Chem. Soc., 1997, 119, 6984-6990.
7. Sentaro Okamoto, Aleksandr Kasatkin, P. K. Zubaidha, Fumie Sato, "Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by XTi(O-i-Pr)3 (X=Cl, O-i-Pr) / 2 i-PrMgBr Reagent. Efficient Synthesis of Functionalized Organotitanium Compounds from Unsaturated Compounds", J. Am. Chem. Soc., 1996, 118, 2208-2216.
8. Aleksandr Kasatkin, Katsushige Kobayashi, Sentaro Okamoto, Fumie Sato, "Synthesis of 1-Hydroxybicyclo[n.1.0]alkanes (n = 3 and 4) and Their Silyl Ethers from Olefinic Esters via Tandem Intramolecular Nucleophilic Acyl Substitution and Intramolecular Carbonyl Addition Reactions Mediated by Ti(OPr-i)4 / 2 i-PrMgCl Reagent", Tetrahedron Letters, 1996, 37, 1849-1852.
9. Yukio Yoshida, Sentaro Okamoto, Fumie Sato, "Intramolecular Nucleophilic Acyl Substitution Reaction of 3,4-Alkadienyl Carbonates Mediated by Ti(O-i-Pr)4 / 2 i-PrMgCl Reagent. Efficient Synthesis of OpticallyActiveβ,γ-Unsaturated Esters with an alfa-Substituent", J. Org. Chem.,1996, 61, 7826-7831.
10. Aleksandr Kasatkin, Sentaro Okamoto, Fumie Sato,　 "Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by Ti(OPr-i)4/2 i-PrMgBr Reagent. Synthesis of Vinyltitanium Compounds Having a Lactone and/or an Ester Group from Acetylenic Carbonates", Tetrahedron Letters, 1995, 36, 6075-6078.

1. Kouta Ibe, Takeshi, Yamada, Sentaro Okamoto, "Synthesis and Vitamin D Receptor Affinity of 16-Oxa Vitamin D3 Analogues", Organic & Biomolecular Chemistry, 2019, 17, 10188-10200. [Link]
2. Sentaro Okamoto, Hidemoto Ito, Shogo Tanakab and Fumie Sato, "Ti(II)-Mediated domino cyclization of 2-functionalized 1-halo-2,n-enynes (n = 7, 8) to bicyclic compounds", Tetrahedron Letters, 2006, 47, 7537-7540.
3. Wataru Uchikawa, Chikashi Matsuno, and Sentaro Okamoto, "Formation of azatitanacyclopentanes from ene-imines and a Ti(O-i-Pr)4/2 i-PrMgX reagent and their synthetic reactions", Tetrahedron Letters, 2004, 45, 9037-9040.
4. Takeshi Hanazawa, Akiko Koyama, Kunio Nakata, Sentaro Okamoto, Fumie Sato, "New Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling between A-ring and C,D-ring Parts", J. Org. Chem., 2003, 68, 9767-9772.
5. Takeshi Hanazawa, Akiko Koyama, Takeshi Wada, Eiko Morishige, Sentaro Okamoto, Fumie Sato, "Efficient Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling", Organic Letters, 2003, 5, 523-525 and see also Organic Letters, 2003, 5, 3167 (addition and corrections).
6. Yongcheng Song, Yuuki Takayama, Sentaro Okamoto, Fumie Sato, "An efficient synthesis of optically active five- and six-membered cyclic compounds with selectable stereo-controls by a Ti(II)-mediated cyclization of chiral secondary 2,7- and 2,8-enyn-1-ol derivatives", Tetrahedron Letters, 2003, 44, 653-657.
7. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "Synthesis of carbo- and aza-bicyclo[4.3.0] and [4.4.0] compounds by Ti(II)-mediated cyclization of 2,7- or 2,8-enynyl-1-ol derivatives", Tetrahedron Letters, 2002, 43, 6511-6514.
8. Subburaj Kandasamy, Sentaro Okamoto, Fumie Sato, "Development of New Chiral Building Blocks for Synthesis of Bicyclo[3.3.0]octane Compounds", J. Org. Chem. 2002, 67, 1024-1026.
9. Takeshi Hanazawa, Takeshi Wada, Tomoko Masuda, Sentaro Okamoto, and Fumie Sato, "Novel Synthetic Approach to 19-nor-1alfa,25-Dihydroxyvitamin D3 and its Derivatives by the Suzuki-Miyaura Coupling in Solution and on Solid Support", Organic Letters, 2001, 3, 3975-3977.
10. Sentaro Okamoto, Kandasamy Subburaj, Fumie Sato, "Highly Stereocontrolled Synthesis of Carbacyclin from Acyclic Starting Materials via Ti(II)-Mediated Tandem Cyclization", J. Am. Chem. Soc., 2000, 122, 11244-11245.

1. Mutsumi Ohkubo, Wataru Uchikawa, Hitomi Matsushita, Aiko Nakano, Takayuki Shirato and Sentaro Okamoto, “Stereoselective construction of 3a-methylhydrindanes starting from 2,7-enynol derivatives based on Ti(II)-mediated cyclization and Ru-catalyzed ring-closing metathesis”, Tetrahedron Letters, 2006, 47, 5181-5185.
2. Sentaro Okamoto, Kandasamy Subburaj, Fumie Sato, "Ti(II)-Mediated Tandem Inter- and Intramolecular Coupling Reaction of Unsaturated Hydrocarbons: One-pot Preparation of Cyclopentanes and Cyclohexanes from Readily Available Acyclic Starting Materials", J. Am. Chem. Soc.2001, 123, 4857-4858.
3. Sentaro Okamoto, Xin Teng, Shintaro Fujii, Yuuki Takayama, Fumie Sato, "An Allyltitanium Derived from Acrolein 1,2-Dicyclohexylethylene Acetal and ( eta2-propene)Ti(O-i-Pr)2 as a Chiral Propionaldehyde Homoenolate Equivalent Which Reacts with Imines with Excellent Stereoselectivity. An Efficient and Practical Access to Optically Active-Amino Carbonyl Compounds", J. Am. Chem. Soc. 2001, 123, 3462-3471.
4. Sentaro Okamoto, Tuuki Takayama, Yuan Gao, Fumie Sato, "One-pot Synthesis of a Variety of 1,4-Alkadienes and 1,2,4-Alkatrienes from Alkynes, Allyl, or Propargyl Compounds and Electrophiles by a ( eta2-propene)Ti(O-i-Pr)2 Mediated Reaction", Synthesis2000, 975-979.
5. Yuuki Takayama, Sentaro Okamoto, Fumie Sato, "Titanium(II)-mediated Asymmetric Intramolecular Cyclization of 2,7- and 2,8-Enynyl Chiral Acetals. Synthetic Equivalent of Stoichiometric Intramolecular Asymmetric Metallo-Ene Reaction", J. Am. Chem. Soc., 1999, 121, 3559-3560.
6. Yuuki Takayama, Sentaro Okamoto, Fumie Sato, "Stereoselective Synthesis of OpticallyActiveSubstituted Piperidines and Pyrrolidines from Amino Acid Derivatives by Titanium(II)-Mediated Intramolecular Cyclization Reaction", Tetrahedron Letters, 1997, 38, 8351-8354.

1. Mutsumi Ohkubo, Daisuke Hayashi, Daisuke Oikawa, Kouki Fukuhara, Sentaro Okamoto, Fumie Sato, "Synthesis of N-substituted 2-arylpyrroles by the reaction of (eta2-imine)titanium complexes with 3,3-diethoxypropyne", Tetrahedron Letters, 2006, 47, 6209-6212.
2. Kohki Fukuhara, Sentaro Okamoto, Fumie Sato, "Asymmetric Synthesis of Allyl- and alfa-Allenylamines from Chiral Imines and Alkynes via ( eta2-Imine)Ti(O-i-Pr)2 Complexes", Organic Letters, 2003, 5, 2145-2149 .

1. Takeshi Yamada and Sentaro Okamoto,
   "3,5,6-Trifluoro-2-pyridone effectively catalyses interrupted Passerini reaction of 3-(2- isocyanoethyl)-indole as a bifunctional catalyst. The described one-pot four-component coupling reaction enabled the rapid preparation of highly functionalised tetracyclic furoindolines",
   Chem. Commun., 2022, 58, 11701-11704 [Link]
2. Takeshi Yamada, Yusuke Watanabe and Sentaro Okamoto,
   "6-Halo-2-pyridone as an efficient organocatalyst for ester aminolysis",
   RSC Advances, 2021, 11, 24588-24593.
3. Kouta Ibe, Yu-suke Hasegawa, Misuzu Shibuno, Tsukasa Shishido, Yuzo Sakai, Yu Kosaki, Keisuke Susa, and Sentaro Okamoto, "Simple and practical method for selective acylation of primary hydroxy group catalyzed by N-methyl-2-phenylimidazole (Ph-NMI) or 2-phenylimidazo[2,1-b]benzothiazoles (Ph-IBT)”,Tetrahedron Lett., 2014, 55, 7039-7042.[Link]
4. Sentaro Okamoto, Yuzo Sakai, Saki Watanabe, Shohei Nishi, Aya Yoneyama, Hitomi Katsumata, Yu Kosaki, Rumi Sato, Megumi Shiratori, Misuzu Shibuno, Tsukasa Shishido, "Structure–activity relationship of dihydroimidazo-, dihydropyrimido, tetrahydrodiazepino-[2,1-b]-thiazoles and -benzothiazoles as an acylation catalyst", Tetrahedron Lett. 2014, 55, 1909-1912.[Link]
5. Baby Viswambharan, Tatsuya Okimura, Satoko Suzuki, Sentaro Okamoto, "Synthesis and Catalytic Properties of 4-Aryl-2,3-dihydro-4H-pyrimido[2,3-b]benzothiazoles for Asymmetric Acyl or Carboxyl Group Transfer Reactions", J. Org. Chem. 2011, 76, 6678-6685.
6. Sentaro Okamoto, Kouici Takano, Tomohiro Ishikawa, Satoshi Ishigami and Akiko Tsuhako, "Activity and behavior of imidazolium salts as a phase transfer catalyst for a liquid-liquid phase system", Tetrahedron Letters, 2006, 47, 8055-8058.
7. Megumi Kobayashi and Sentaro Okamoto, “Unexpected reactivity of annulated 3H-benzothiazol-2-ylideneamines as an acyl transfer catalyst”, Tetrahedron Letters, 2006, 47, 4347-4350.

1. Akiko Tsuhako, Daisuke Oikawa, Kazushi Sakai, Sentao Okamoto, "Copper-catalyzed intramolecular hydroamination of allenylamines to 3-pyrrolines or 2-alkenylpyrrolidines", Tetrahedron Letters, 2008, 49, 6529-6532.
2. Sentaro Okamoto, Toshiharu Yoshino, Hiromi Tsujiyama, Fumie Sato, "Highly Efficient and General Method for Synthesis of Tertiary Allylic Alcohols in a Chiral Form. Synthesis of Arbaprostil", Tetrahedron Letters, 1991, 32, 5793-5796.
3. Sentaro Okamoto, Hiromi Tsujiyama, Toshiharu Yoshino, Fumie Sato, "Synthesis of Optically Activegamma-Trimethylsilyl-beta, gamma-Epoxy Tertiary Alcohols by the Diastereoselective Addition Reaction of beta-Trimethylsilyl-alfa, beta-Epoxyketones with Grignard Reagents", Tetrahedron Letters, 1991, 32, 5789-5792.

1. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "An efficient synthesis of optically active (2R,3R)-2-methyl-3-[(1R)-1-methylprop-2-enyl]cyclopentanone, a useful chiral building block for synthesis of vitamin D and steroids", Tetrahedron Letters, 2003, 44, 2113-2115.
2. Yongcheng Song, Sentaro Okamoto, and Fumie Sato, "Highly Stereoselective Asymmetric Construction of an Acyclic Carbon Skeleton Having Two Adjacent Alkyl Substituents by Michael Addition of OpticallyActiveAllenyltitaniums to Alkylidenemalonates", Organic Letters, 2001, 3, 3543-3545.
3. Toshiharu Yoshino, Sentaro Okamoto, Fumie Sato, "Highly Efficient Synthesis of 13-Dehydroprostaglandins by 1,4-Addition Reaction of Alkynyl omega Side-Chain Unit onto Cyclopentenone Framework", J. Org. Chem., 1991, 56, 3205-3207.
4. Hiromi Tsujiyama, Naoya Ono, Toshiharu Yoshino, Sentaro Okamoto, Fumie Sato, "A Highly Practical Synthesis of Natural PGE1, delta2-Trans-PGE1 and 2,2,3,3-Tetrade-Hydro-PGE1 via Two-Component Coupling Process Using Zinc-Copper Reagents", Tetrahedron Letters, 1990, 31, 4481-4484.
5. Sentaro Okamoto, Yuichi Kobayashi, Hiroshi Kato, Kimihiko Hori, Takashi Takahashi, Jiro　Tsuji, Fumie Sato, "Prostaglandin Synthesis via Two-Component Coupling. Highly Efficient Synthesis of Chiral　Prostaglandin Intermediates 4-Alkoxy-2-Alkyl-2-Cyclopenten-1-one and 4-Alkoxy-3-Alkenyl-2-Methylenecyclopentan-1-one", J. Org. Chem., 1988, 53, 5590-5592.

1. Naoto Takekoshi, Kenji Miyashita, Noriaki Shoji, and Sentaro Okamoto, "Generation of A Low-Valent Titanium from Titanatrane and Its Catalytic Reactions: Radical Ring Opening of Oxetanes", Adv. Synth. Catal. 2013, 355, 2151-2157. [Link]
2. Tsuyoshi Kawaji, Noriaki Shoji, Kenji Miyashita, Sentaro Okamoto, "Non-Cp Titanium Alkoxide-Based Homolytic Ring-Opening of Epoxides by An Intramolecular Hydrogen Abstraction in beta-Titanoxy Radical Intermediates", Chemical Communications, 2011, 47, 7857-7859.
3. Noriaki Shohji, Tsuyoshi Kawaji, Sentaro Okamoto, "Ti(O-i-Pr)4/Me3SiCl/Mg-Mediated Reductive Cleavage of Sulfonamides and Sulfonates To Amines and Alcohols", Organic Letters, 2011, 13, 2626-2629.
4. Akiko Tsuhako, Jing-Qian He, Mariko Mihara, Naoko Saino and Sentaro Okamoto, "Carbonyl reduction with CaH2 and R3SiCl catalyzed by ZnCl2" Tetrahedron Letters, 2007, 47, 9120-9123.
5. Toshio Aida, Norikatsu Kuboki, Kenji Kato, Wataru Uchikawa, Chikashi Matsuno and Sentaro Okamoto, "Use of CaH2 as a reductive hydride source: Reduction of ketones and imines with CaH2/ZnX2 in the presence of a Lewis acid", Tetrahedron Letters, 2005, 46, 1667-1669.
6. Kousuke Tani, Naoya Ono, Sentaro Okamoto, Fumie Sato, "Palladium(0)-Catalysed Transfer Hydrogenation of Alkynes to cis-Alkenes with HCO2H-NEt3", J. Chem. Soc., Chem. Commun., 1993, 386-387.

1. Sentaro Okamoto, Kousuke Tani, Fumie Sato, K. Barry Sharpless, Davit Zargarian, "Synthesis of OpticallyActiveSecondary Allylic Alcohols from Allylsilanes via Successive Asymmetric Dihydroxylation (AD) and Peterson Olefination Reactions", Tetrahedron Letters, 1993, 34, 2509-2512.
2. Kousuke Tani, Yoshitaka Sato, Sentaro Okamoto, Fumie Sato, "Synthesis of OpticallyActiveFurfuryl Alcohols and Butenolides from trans-1-Trimethylsilyl-3-Alken-1-ynes via Successive Asymmetric Dihydroxylation and Hydromagnesiation Reactions", Tetrahedron Letters, 1993, 34, 4975-4978.
3. Yasunori Kitano, Takashi Matsumoto, Takenori Wakasa, Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi Kobayashi, Fumie Sato, Katsuaki Miyaji, Kazutaka Arai, "A Highly Efficient Synthesis of Optically Pure gamma-iodo Allylic Alcohols and their Conversion into Various OpticallyActiveAllylic Alcohols", Tetrahedron Letters, 1987, 28, 6351-6354.
4. Yasunori Kitano, Takashi Matsumoto, Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi　Kobayashi, Fumie Sato, "A Highly Efficient Synthesis of Prostaglandin omega-Chain Precursors", Chemistry Letters, 1987, 1523-1526.

1. Naoto Takekoshi, Kenji Miyashita, Noriaki Shoji, and Sentaro Okamoto, "Generation of A Low-Valent Titanium from Titanatrane and Its Catalytic Reactions: Radical Ring Opening of Oxetanes", Adv. Synth. Catal. 2013, 355, 2151-2157.
2. Tsuyoshi Kawaji, Noriaki Shoji, Kenji Miyashita, Sentaro Okamoto, "Non-Cp Titanium Alkoxide-Based Homolytic Ring-Opening of Epoxides by An Intramolecular Hydrogen Abstraction in β-Titanoxy Radical Intermediates", Chemical Communications, 2011, 47, 7857-7859.
3. Noriaki Shohji, Tsuyoshi Kawaji, Sentaro Okamoto, "Ti(O-i-Pr)4/Me3SiCl/Mg-Mediated Reductive Cleavage of Sulfonamides and Sulfonates To Amines and Alcohols", Organic Letters, 2011, 13, 2626-2629.
4. Kwangho Kim, Sentaro Okamoto, Fumie Sato, "Regiocontrol of Radical Cyclization by Lewis Acids. Efficient Synthesis of OpticallyActive Functionalized Cyclopentanes and Cyclohexanes", Organic Letters2001, 3, 67-69.
5. Naoya Ono, Yukio Yoshida, Kousuke Tani, Sentaro Okamoto, Fumie Sato, "A Highly Efficient Approach to Prostaglandins via Radical Addition of alfa Side-Chains to Methylenecyclopentanones. Total Synthesis of Natural PGE1, Limaprost and New Prostaglandin Derivatives.", Tetrahedron Letters, 1993, 34, 6427-6430.

1. Suchithra Madhavan, Hiromasa Takagi, Shunpei Fukuda and Sentaro Okamoto,"Low−valent titanium−catalyzed deprotection of allyl- and propargyl-carbamates to amines”,Tetrahedron Letters,2016, 57, 2074-2077.[Link]
2. Kouta Ibe, Haruko Aoki, Hiromasa Takagi, Kiyohide Ken-mochi, Yu-suke Hasegawa, Naoto Hayashi, and Sentaro Okamoto, "Preparation of 2-hydroxy A-ring precursors for synthesis of vitamin D3 analogues from lyxose”,Tetrahedron Letters, 2015, 56, 2315-2318.
3. Kouta Ibe, Yu-suke Hasegawa, Misuzu Shibuno, Tsukasa Shishido, Yuzo Sakai, Yu Kosaki, Keisuke Susa, and Sentaro Okamoto, "Simple and practical method for selective acylation of primary hydroxy group catalyzed by N-methyl-2-phenylimidazole (Ph-NMI) or 2-phenylimidazo[2,1-b]benzothiazoles (Ph-IBT)”,Tetrahedron Lett., 2014, 55, 7039-7042.
4. Noriaki Shohji, Tsuyoshi Kawaji, Sentaro Okamoto, "Ti(O-i-Pr)4/Me3SiCl/Mg-Mediated Reductive Cleavage of Sulfonamides and Sulfonates To Amines and Alcohols", Organic Letters, 2011, 13, 2626-2629.
5. Mutsumi Ohkubo, Sayaka Mochizuki, Takeshi Sano, Yuuki Kawaguchi, Sentaro Okamoto, "Selective Cleavage of Allyl and Propargyl Ethers to Alcohols Catalyzed by Ti(O-i-Pr)4/MXn/Mg", Organic Letters, 2007, 9, 773-776.
6. Sentaro Okamoto, Naoya Ono, Kousuke Tani, Yukio Yoshida, Fumie Sato, "Conversion of Allyl-2-Ynoates to Alk-2-Ynoic Acids Using Morpholine and Palladium(0)-Bis(diphenylphosphino)Alkane Catalyst; Synthesis of 2,2,3,3-Tetradehydro PGE1", J. Chem.Soc., Chem. Commun., 1994, 279-280.
7. Naoya Ono, Mie Tsuboi, Sentaro Okamoto, Tohru Tanami, Fumie Sato, "Synthesis of Allyl Ester of Prostaglandin E and the Conversion of the Allyl Ester Moietyinto Carboxylic Acid by Chemical Method. A Highly Practical Synthesis of Natural PGE1 and Limaprost", Chemistry Letters, 1992, 2095-2098.

1. Takayori Ito, Isao Yamakawa, Sentaro Okamoto, Yuichi Kobayashi, Fumie Sato, "A New Stereoselective Method for Synthesis of OpticallyActivebeta-Alkylhomoallyl　Alcohols and gamma, delta-Epoxy-beta-Alkyl Alcohols", Tetrahedron Letters, 1991, 32, 371-374.
2. Takayori Ito, Sentaro Okamoto, Fumie Sato, "Synthesis of OpticallyActivealfa-Trimethylsilyl delta alfa,beta-Butenolides and their Conversion into Various Butenolides and Saturated gamma-Lactones", Tetrahedron Letters, 1990, 31, 6399-6402.
3. Takayori Ito, Sentaro Okamoto, Fumie Sato, "Practical Method for Synthesis of Optically Pure Propargylic Alcohols", Tetrahedron Letters, 1989, 30, 7083-7086.
4. Yasunori Kitano, Sentaro Okamoto, Fumie Sato, "A New Method for the Synthesis of Protected Chiral 4-Hydroxy-2-Cyclopentenone", Chemistry Letters, 1989, 2163-2164.
5. Yasunori Kitano, Takashi Matsumoto, Takenori Wakasa, Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi Kobayashi, Fumie Sato, Katsuaki Miyaji, Kazutaka Arai, "A Highly Efficient Synthesis of Optically Pure gamma-iodo Allylic Alcohols and their Conversion into Various OpticallyActiveAllylic Alcohols",Tetrahedron Letters, 1987, 28, 6351-6354.
6. Yasunori Kitano, Takashi Matsumoto, Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi Kobayashi, Fumie Sato, "A Highly Efficient Synthesis of Prostaglandin omega-Chain Precursors", Chemistry Letters, 1987, 1523-1526.
7. Sentaro Okamoto, Toshiyuki Shimazaki, Yuichi Kobayashi, Fumie Sato, "A Highly Efficient Synthesis of gamma-Halo Allylic and Propargylic Alcohols with High Optical　Purity. Practical Method for Synthesis of the Prostaglandin omega-Chain", Tetrahedron Letters, 1987, 28, 2033-2036.
8. Sentaro Okamoto, Toshiyuki Shimazaki, Yasunori Kitano, Yuichi Kobayashi, Fumie Sato, "A Practical Preparation of α-Hydroxy and alfa,beta-Dihydroxy Aldehydes, Useful　Intermediates for the Synthesis of Arachidonic Acid Metabolites, Starting with D-Glyceraldehyde Acetonide", J. Chem. Soc., Chem. Commun., 1986, 1352-1355.

1. Kouta Ibe, Haruki Nakada, Mayu Ohgami, Takeshi Yamada, and Sentaro Okamoto,
   "Design, Synthesis, and Properties of des-D-Ring Interphenylene Derivatives of 1α,25-Dihydroxyvitamin D3",
   Eur. J. Med. Chem., 2022, accepted. [Link]
2. Kouta Ibe, Takeshi, Yamada, Sentaro Okamoto, "Synthesis and Vitamin D Receptor Affinity of 16-Oxa Vitamin D3 Analogues", Organic & Biomolecular Chemistry, 2019, 17, 10188-10200. [Link]
3. Mutsumi Ohkubo, Wataru Uchikawa, Hitomi Matsushita, Aiko Nakano, Takayuki Shirato and Sentaro Okamoto, “Stereoselective construction of 3a-methylhydrindanes starting from 2,7-enynol derivatives based on Ti(II)-mediated cyclization and Ru-catalyzed ring-closing metathesis”, Tetrahedron Letters, 2006, 47, 5181-5185.
4. Takeshi Hanazawa, Akiko Koyama, Kunio Nakata, Sentaro Okamoto, Fumie Sato, "New Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling between A-ring and C,D-ring Parts", J. Org. Chem., 2003, 68, 9767-9772.
5. Takeshi Hanazawa, Akiko Koyama, Takeshi Wada, Eiko Morishige, Sentaro Okamoto, Fumie Sato, "Efficient Convergent Synthesis of 1alfa,25-Dihydroxyvitamin D3 and Its Analogues by Suzuki-Miyaura Coupling", Organic Letters, 2003, 5, 523-525 and see also Organic Letters, 2003, 5, 3167 (addition and corrections).
6. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "An efficient synthesis of optically active (2R,3R)-2-methyl-3-[(1R)-1-methylprop-2-enyl]cyclopentanone, a useful chiral building block for synthesis of vitamin D and steroids", Tetrahedron Letters, 2003, 44, 2113-2115.
7. Takeshi Hanazawa, Takeshi Wada, Tomoko Masuda, Sentaro Okamoto, and Fumie Sato, "Novel Synthetic Approach to 19-nor-1alfa,25-Dihydroxyvitamin D3 and its Derivatives by the Suzuki-Miyaura Coupling in Solution and on Solid Support", Organic Letters, 2001, 3, 3975-3977.
8. Takeshi Hanazawa, Hajime Inamori, Tomoko Masuda, Sentaro Okamoto, Fumie Sato, "Efficient and Practical Synthesis of the A-Ring Precursor of 19-nor-1alfa,25-Dihydroxyvitamin D3 and its 13C- or 2H-Labeled Derivative", Organic Letters2001, 3, 2205-2207.

1. Takeshi Yamada, Kazuki Arai, Rie Kikuchi and Sentaro Okamoto,
   "Deuteration of Indole Compounds: Synthesis of Deuterated Auxins, Indole-3-acetic Acid-d5 and Indole-3-butyric Acid-d5",
   ACS Omega, 2021, 6, 19956-19963.

1. Akiko Tsuhako, Daisuke Oikawa, Kazushi Sakai, Sentao Okamoto, "Copper-catalyzed intramolecular hydroamination of allenylamines to 3-pyrrolines or 2-alkenylpyrrolidines", Tetrahedron Letters, 2007, 47, 9120-9123.
2. Yongcheng Song, Sentaro Okamoto, Fumie Sato, "A concise asymmetric synthesis of 5,8-disubstituted indolizidine alkaloids. Total synthesis of (-)-indolizidine 209B", Tetrahedron Letters, 2002, 43, 8635-8637.
3. Sentaro Okamoto, Kohki Fukuhara, Fumie Sato, "An Efficient and Practical Preparation of OpticallyActivesyn-1-Vinyl-2-amino Alcohol Derivatives by the Regio- and Diastereoselective Addition Reaction of ( alfa-Alkoxyallyl) titaniums with Chiral Imines. Formal Synthesis of Statine", 2Tetrahedron Letters 2000, 41, 5561-5565.
4. Masaaki Shirai, Sentaro Okamoto, Fumie Sato, "Practical Synthesis of OpticallyActiveBicyclic Oxazolidinylpiperidines, Chiral Building Blocks for Preparing 1-Deoxyazasugars, from Serine", Tetrahedron Letters, 1999, 40, 5331-5332.
5. Sentaro Okamoto, Masayuki Iwakubo, Katsushige Kobayaishi, Fumie Sato, "Efficient and Practical Method for Synthesizing N-Heterocyclic Compounds Using Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by Ti(O-i-Pr)4/2 i-PrMgX Reagent. Synthesis of Quinolones, Pyrroles, Indoles, and OpticallyActiveN-Heterocycles Including Allopumiliotoxin Alkaloid 267A", J. Am. Chem. Soc., 1997, 119, 6984-6990.

1. Sentaro Okamoto, Kandasamy Subburaj, Fumie Sato, "Highly Stereocontrolled Synthesis of Carbacyclin from Acyclic Starting Materials via Ti(II)-Mediated Tandem Cyclization", J. Am. Chem. Soc.,2000, 122, 11244-11245.
2. Youichi Shimazaki, Kazuya Kameo, Tohru Tanami, Hideo Tanaka, Naoya Ono, Youichi Kiuchi, Sentaro Okamoto, Fumie Sato, Atsushi Ichikawa, "Synthesis and Structure-Activity Relationships of a New Class of Selective EP3 Receptor Agonist, 13,14-Didehydro-16-phenoxy Analogues of Prostaglandin E1", Bioorg. Med. Chem., 2000, 8, 353-362.
3. Tohru Tanami, Kazuya Kameo, Naoya Ono, Takashi Nakagawa, Shigesato Annou, Mie Tsuboi, Kousuke Tani, Sentaro Okamoto, Fumie Sato, "Synthesis and Pharmacological Activities of 13-dehydro Derivatives of Primary Prostaglandins", Bioorganic & Medical Chem. Lett.,1998, 8, 1507-1510.
4. Yasufumi Kawanaka, Naoya Ono, Yukio Yoshida, Sentaro Okamoto, Fumie Sato, "Synthesis of the Key Component for Preparation of 6-Keto-prostaglandins by a Two-Component Coupling Process: Synthesis of 6-Keto-Prostaglandin E1, Ornoprostill and delta2-trans-6-Keto-Prostaglandin E1.",J. Chem. Soc., Perkin Trans. 1,1996, 715-718.
5. Yukio Yoshida, Yoshitaka Sato, Sentaro Okamoto, Fumie Sato, "An Efficient Approach to OpticallyActiveBenzoprostacyclins by a Two-Component Coupling Process", J. Chem. Soc., Chem. Commun., 1995, 811-812.
6. Sentaro Okamoto, Naoya Ono, Kousuke Tani, Yukio Yoshida, Fumie Sato, "Conversion of Allyl-2-Ynoates to Alk-2-Ynoic Acids Using Morpholine and Palladium(0)-Bis(diphenylphosphino)Alkane Catalyst; Synthesis of 2,2,3,3-Tetradehydro PGE1", J. Chem.Soc., Chem. Commun., 1994, 279-280.
7. Naoya Ono, Yukio Yoshida, Kousuke Tani, Sentaro Okamoto, Fumie Sato, "A Highly Efficient Approach to Prostaglandins via Radical Addition of alfa Side-Chains to Methylenecyclopentanones. Total Synthesis of Natural PGE1, Limaprost and New Prostaglandin Derivatives.", Tetrahedron Letters, 1993, 34, 6427-6430.
8. E. H. Oliw, Sentaro Okamoto, L. Hornsten, Fumie Sato, "Biosynthesis of Prostaglandins from 17(18)-Epoxy-Eicosatetraenoic Acid, a Cytochrome P-450 Metabolite of Eicosapentaenoic Acid", Biochemica et Biophysica Acta, 1992, 1126, 261-268.
9. Sentaro Okamoto, Satoshi Katayama, Naoya Ono, Fumie Sato, "A New Efficient Synthesis of the Biologically Potent PGD2-Analogue ZK118182", Tetrahedron: Asymmetry, 1992, 3, 1525-1528.
10. Naoya Ono, Mie Tsuboi, Sentaro Okamoto, Tohru Tanami, Fumie Sato, "Synthesis of Allyl Ester of Prostaglandin E and the Conversion of the Allyl Ester Moietyinto Carboxylic Acid by Chemical Method. A Highly Practical Synthesis of Natural PGE1 and Limaprost", Chemistry Letters, 1992, 2095-2098.
11. Sentaro Okamoto, Toshiharu Yoshino, Hiromi Tsujiyama, Fumie Sato, "Highly Efficient and General Method for Synthesis of Tertiary Allylic Alcohols in a Chiral Form. Synthesis of Arbaprostil", Tetrahedron Letters, 1991, 32, 5793-5796.
12. Toshiharu Yoshino, Sentaro Okamoto, Fumie Sato, "Highly Efficient Synthesis of 13-Dehydroprostaglandins by 1,4-Addition Reaction of Alkynyl　omega Side-Chain Unit onto Cyclopentenone Framework",J. Org. Chem., 1991, 56, 3205-3207.
13. Sentaro Okamoto, Toshiharu Yoshino, Fumie Sato, "A Practical Synthesis of the omega Side-Chain Unit Present in Mexiprostil and Its Use for Synthesis of Mexiprostil via Two-Component Coupling Process",Tetrahedron: Asymmetry, 1991, 2, 35-38.
14. Hiromi Tsujiyama, Naoya Ono, Toshiharu Yoshino, Sentaro Okamoto, Fumie Sato, "A Highly Practical Synthesis of Natural PGE1, delta2-Trans-PGE1 and 2,2,3,3-Tetrade-Hydro-PGE1 via Two-Component Coupling Process Using Zinc-Copper Reagents",Tetrahedron Letters, 1990, 31, 4481-4484.
15. Yasunori Kitano, Sentaro Okamoto, Fumie Sato, "A New Method for the Synthesis of Protected Chiral 4-Hydroxy-2-Cyclopentenone", Chemistry Letters, 1989, 2163-2164.
16. Sentaro Okamoto, Yuichi Kobayashi, Fumie Sato, "A Highly Efficient Synthesis of Natural PGE3 and 5,6-Dihydro PGE3 via Two-Component　Coupling Process", Tetrahedron Letters, 1989, 30, 4379-4382.
17. Sentaro Okamoto, Yuichi Kobayashi, Hiroshi Kato, Kimihiko Hori, Takashi Takahashi, Jiro Tsuji, Fumie Sato, "Prostaglandin Synthesis via Two-Component Coupling. Highly Efficient Synthesis of Chiral Prostaglandin Intermediates 4-Alkoxy-2-Alkyl-2-Cyclopenten-1-one and 4-Alkoxy-3-Alkenyl-2-Methylenecyclopentan-1-one", J. Org. Chem., 1988, 53, 5590-5592.
18. Yuichi Kobayashi, Sentaro Okamoto, Toshiyuki Shimazaki, Yoshinori Ochiai, Fumie Sato, "Synthesis and Physiological Activities of Both Enantiomers of Coriolic Acid and their Geometric Isomers", Tetrahedron Letters, 1987, 28, 3959-3962.
19. Takeshi Yamada, Yusuke Watanabe and Sentaro Okamoto,
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