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Search DetailsOonishi Yoshihiro
| Faculty of Pharmaceutical Sciences Molecular Pharmaceutical Sciences Chemistry and Medicinal Chemistry | Associate Professor |
Researcher basic information
■ Degree■ URL
researchmap URLホームページURL■ Various IDs
J-Global ID■ Research Keywords and Fields
Research KeywordResearch Field■ Educational Organization
- Bachelor's degree program, School of Pharmaceutical Sciences and Pharmacy
- Master's degree program, Graduate School of Life Science
- Doctoral (PhD) degree program, Graduate School of Life Science
Career
■ CareerCareer
- 2016 - Present
Hokkaido University, Faculty of Pharmaceutical Sciences, 准教授 - 2015 - 2016
Hokkaido University, Faculty of Pharmaceutical Sciences, 講師 - 2007 - 2015
Hokkaido University, Faculty of Pharmaceutical Sciences, 助教 - 2006 - 2007
Hokkaido University, Faculty of Pharmaceutical Sciences, 助手 - 2005 - 2006
Hokkaido University, 大学院薬学研究科, 助手
Research activity information
■ Awards- Feb. 2015, 有機合成化学協会, 有機合成化学協会 旭化成ファーマ研究企画賞
実用的なトリフルオロメチル化反応の確立を指向した新規銅触媒の創製
大西英博 - Mar. 2014, 日本薬学会, 日本薬学会奨励賞
ローダサイクル中間体を経由する環化反応の開発と有機合成への応用
大西英博 - Feb. 2010, 日本化学会, 優秀講演賞(学術)
ロジウム触媒によるアレン-インとアルデヒドの分子内環化反応を利用した二環式化合物の合成
大西英博
- Rhodium-Catalyzed [6+2] Cycloaddition of Alkynylboronates with 4-Allenals for the Synthesis of Multisubstituted Eight-Membered Ketones
Yoshihiro Oonishi; Yoshitaka Kitano; Akihito Noguchi; Miyabi Hashimoto; Yoshihiro Sato
Synlett, Georg Thieme Verlag KG, 06 Jul. 2026, [Peer-reviewed], [Lead author, Corresponding author]
Scientific journal, Abstract
We report a one-pot synthesis of multisubstituted eight-membered ketones via a rhodium-catalyzed [6+2] cycloaddition of 4-allenals with alkynylboronates, followed by Suzuki–Miyaura coupling. The inherently unstable boronic ester intermediates are directly engaged in the coupling, enabling in situ derivatization. Alternatively, these intermediates can be converted into stable pinacol boronates upon treatment with pinacol, which serve as versatile intermediates for further functionalization. - Reflexive Chirality Transfer (RCT): Asymmetric 1,3-Dipolar Cycloaddition of α-Amino Acid Schiff Base with Nonchiral Copper Catalyst.
Kazuhiro Morisaki; Yuto Furuki; Rento Kousaka; Serika Nagai; Yoshihiro Oonishi; Yoshihiro Sato
Journal of the American Chemical Society, 147, 15, 12740, 12748, 16 Apr. 2025, [International Magazine]
English, Scientific journal, Although optically pure α-amino acids are ubiquitous, their chirality is usually lost during the α-C-H deprotonation. Consequently, precious chiral catalysis has been necessary to synthesize optically active α-tetrasubstituted unnatural α-amino acid derivatives, even when starting with optically pure α-amino acids. However, here, we report a catalytic asymmetric 1,3-dipolar cycloaddition that preserves the α-carbon chirality of α-amino acid derivatives. This process directly converts readily available optically active α-amino acid Schiff bases into optically active α-tetrasubstituted pyrrolidine derivatives without external chiral additives, despite the temporary loss of α-carbon chirality through the formation of planar 1,3-dipole intermediates. Mechanistic studies revealed that the α-carbon chirality of the α-amino acid Schiff base is transiently transferred to metal-centered chirality in enolates and subsequently restored as the carbon-centered chirality of the products. This conceptually novel "reflexive chirality transfer (RCT)" strategy offers a simple and cost-effective approach to optically active unnatural α-amino acid derivatives, addressing the current limitations of chiral pool synthesis. - 1,3-Dipolar Cycloaddition of α-Amino Acid Schiff Base with Preserved Chirality via Reflexive Chirality Transfer (RCT) Process
Kazuhiro Morisaki; Yuto Furuki; Rento Kousaka; Serika Nagai; Yoshihiro Oonishi; Yoshihiro Sato
21 Nov. 2024 - One‐Pot Synthesis of 2‐Aminothiophenes by Au(I)‐Catalyzed Cascade Reaction Including Hydrothiolation, Thio‐Claisen Rearrangement, and Cycloisomerization
Yoshihiro Oonishi; Yukiko Ueda; Yoshihiro Sato
Advanced Synthesis & Catalysis, 02 Jul. 2024, [Peer-reviewed]
Scientific journal - Enantioselective Intramolecular Hydroacylation of Alkynes by Rhodium Catalysis through Dynamic Kinetic Resolution
Yoshihiro Oonishi; Kazuki Takagishi; Yi‐Min Liu; Yoshihiro Sato
Advanced Synthesis & Catalysis, 365, 20, 3432, 3437, Wiley, 12 May 2023
Scientific journal, Abstract
Rhodium‐catalyzed enantioselective hydroacylation of racemic alkynals having a substituent at the α‐position of the carbonyl group is described. This reaction can be applied for the wide range of substrates (22 examples), and mechanistic studies revealed that a dynamic kinetic resolution (DKR) process occurs during the hydroacylation, giving various cyclic ketones in 47–93% yields with 59:41 to 97:3 er from racemic starting materials. - Syntheses of Oxazolidinone-2,3-Fused Indoline and Azaindoline Derivatives
Takahide Nishi; Koji Yamada; Kaho Ishizawa; Yoshihiro Oonishi; Yoshihiro Sato
Synlett, 05 Apr. 2023, [Peer-reviewed]
Scientific journal - Palladium-Catalyzed Decarboxylative Cyclization of α-Acyloxyketones Having an Allene Moiety in the Tether
Akimasa Yabuta; Yoshihiro Oonishi; Ryohei Doi; Kazuhiro Morisaki; Yoshihiro Sato
New Journal of Chemistry, 47, 2, 539, 544, Royal Society of Chemistry (RSC), 2022, [Peer-reviewed]
Scientific journal, We herein report palladium(0)-catalyzed decarboxylative cyclization of α-acyloxyketones having an allene moiety in the tether, giving various cyclohexanone derivatives. DFT calculations suggested that the reaction proceeds in the following sequence:... - Rhodium(I)-Catalyzed Enantioselective Cyclization of Enynes through Site-Selective C(sp3)–H Bond Activation Triggered by Formation of Rhodacycle
Yoshihiro Oonishi; Yoshihiro Sato; Shunki Sakamoto; Shuya Agata
Synthesis, 53, 17, 2976, 2983, Georg Thieme Verlag KG, Sep. 2021, [Peer-reviewed], [Invited], [Lead author, Corresponding author], [International Magazine]
Scientific journal,Abstract Rhodium(I)-catalyzed enantioselective cyclization of enynes through C(sp3)–H bond activation was investigated. It was found that the cyclization of enynes having a tert-butyl moiety on the alkene afforded a spirocyclic compound (up to 92% ee), while the cyclization of enynes having an isopropyl or an ethyl group on the alkene gave a cyclic diene (up to 98% ee). Furthermore, an intermolecular competition reaction using a deuterium-labeled substrate revealed that C(sp3)–H bond activation was one of the key steps, having a high energy barrier, in this cyclization. - Synthesis of γ,δ-Unsaturated Esters and Amides via Au(I)-Catalyzed Reactions of Aryl Ynol Ethers or Ynamides with Allylic Alcohols
Souta Misawa; Asaki Miyairi; Yoshihiro Oonishi; Yoshihiro Sato; Steven P. Nolan
Synthesis, 53, 24, 4644, 4653, Georg Thieme Verlag KG, 27 Jul. 2021, [Peer-reviewed], [Corresponding author], [Internationally co-authored], [International Magazine]
Scientific journal,Abstract Polarized alkynes such as ynol ethers and ynamides have attracted much attention due to their inherent unique reactivity. Herein, we report Au(I)-catalyzed hydroalkoxylation/Claisen rearrangement cascade reactions of aryl ynol ethers and ynamides with allylic alcohols. At the first stage (hydroalkoxylation) of this cascade reaction, attack of allylic alcohols to aryl ynol ethers or ynamides occurs at the α-position of the polarized alkynes in a completely regioselective manner. Claisen rearrangement of the resulting adducts subsequently takes place to give γ,δ-unsaturated esters or amides, respectively. The [Au(IPr)NTf2] catalyst is most effective for this reaction, and the reaction proceeds under mild conditions (in the case of aryl ynol ether: in THF, 60 °C; in the case of ynamides: in toluene, 80 °C) in an atom-economical way. - One-Pot Synthesis of Tetrasubstituted 2-Aminofurans via Au(I)-Catalyzed Cascade Reaction of Ynamides with Propargylic Alcohols
Asaki Miyairi; Yoshihiro Oonishi; Yoshihiro Sato
Organic & Biomolecular Chemistry, 19, 43, 9396, 9400, Royal Society of Chemistry (RSC), 2021, [Peer-reviewed], [Corresponding author], [International Magazine]
Scientific journal, One-pot synthesis of fully substituted 2-aminofurans via a Au(I)-catalyzed cascade reaction of ynamides and propargylic alcohol was realized. Hydroalkoxylation of ynamide with propargylic alcohol, Saucy-Marbet rearrangement, and cyclization of the... - Titelbild: Rhodium(I)‐Catalyzed Enantioselective Cyclization of Enynes by Intramolecular Cleavage of the Rh−C Bond by a Tethered Hydroxy Group (Angew. Chem. 26/2019)
Yoshihiro Oonishi; Shuichi Masusaki; Shunki Sakamoto; Yoshihiro Sato
Angewandte Chemie, 131, 26, 8687, 8687, Wiley, 24 Jun. 2019
Scientific journal - Cover Picture: Rhodium(I)‐Catalyzed Enantioselective Cyclization of Enynes by Intramolecular Cleavage of the Rh−C Bond by a Tethered Hydroxy Group (Angew. Chem. Int. Ed. 26/2019)
Yoshihiro Oonishi; Shuichi Masusaki; Shunki Sakamoto; Yoshihiro Sato
Angewandte Chemie International Edition, 58, 26, 8595, 8595, Wiley, 24 Jun. 2019
Scientific journal - Rhodium(I)‐Catalyzed Enantioselective Cyclization of Enynes by Intramolecular Cleavage of the Rh−C Bond by a Tethered Hydroxy Group
Yoshihiro Oonishi; Shuichi Masusaki; Shunki Sakamoto; Yoshihiro Sato
Angewandte Chemie, 131, 26, 8828, 8831, Wiley, 24 Jun. 2019, [Peer-reviewed]
Scientific journal - Rhodium(I)-Catalyzed Enantioselective Hydroacylation of Racemic Allenals via Dynamic Kinetic Resolution
Yoshihiro Oonishi; Akihito Hosotani; Takayuki Yokoe; Yoshihiro Sato
ORGANIC LETTERS, 21, 11, 4120, 4123, Jun. 2019, [Peer-reviewed], [Corresponding author]
English, Scientific journal, 11046798 - Rhodium(I)-Catalyzed Enantioselective Cyclization of Enynes by Intramolecular Cleavage of the Rh−C Bond by a Tethered Hydroxy Group
Yoshihiro Oonishi; Shuichi Masusaki; Shunki Sakamoto; Yoshihiro Sato
Angewandte Chemie International Edition, 58, 26, 8736, 8739, Wiley, May 2019, [Peer-reviewed], [Corresponding author]
Scientific journal - Stereoselective Construction of Spiro-Fused Tricyclic Frameworks by Sequential Reaction of Enynes, Imines, and Diazoalkenes with Rh(I) and Rh(II) Catalysts
Yoshio Hato; Yoshihiro Oonishi; Yasunori Yamamoto; Kiyohiko Nakajima; Yoshihiro Sato
JOURNAL OF ORGANIC CHEMISTRY, 81, 17, 7847, 7854, Sep. 2016, [Peer-reviewed]
English, Scientific journal - Rhodium(I)-Catalyzed Diastereoselective Cycloisomerization of Enynes with Tethered (S)-2-Methyl-2-propanesulfinyl Imine
Yoshihiro Oonishi; Yoshio Hato; Yoshihiro Sato
ADVANCED SYNTHESIS & CATALYSIS, 358, 14, 2273, 2279, Jul. 2016, [Peer-reviewed]
English, Scientific journal - Scope and limitations of the dual-gold-catalysed hydrophenoxylation of alkynes
Adrian Gomez-Suarez; Yoshihiro Oonishi; Anthony R. Martin; Steven P. Nolan
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY, 12, 172, 178, Feb. 2016, [Peer-reviewed]
English, Scientific journal - On the Mechanism of the Digold(I)-Hydroxide-Catalysed Hydrophenoxylation of Alkynes
Adrian Gomez-Suarez; Yoshihiro Oonishi; Anthony R. Martin; Sai V. C. Vummaleti; David J. Nelson; David B. Cordes; Alexandra M. Z. Slawin; Luigi Cavallo; Steven P. Nolan; Albert Poater
CHEMISTRY-A EUROPEAN JOURNAL, 22, 3, 1125, 1132, Jan. 2016, [Peer-reviewed]
English, Scientific journal - Rhodium(I)-Catalyzed [2+2+2] Cycloaddition between Allene, Alkyne, and Imine via a Strained Azarhodacycle Intermediate
Yoshihiro Oonishi; Yoshio Hato; Yoshihiro Sato
ADVANCED SYNTHESIS & CATALYSIS, 357, 14-15, 3033, 3039, Oct. 2015, [Peer-reviewed]
English, Scientific journal - Development of Novel Cyclizations via Rhodacycle Intermediate and Its Application to Synthetic Organic Chemistry
Yoshihiro Oonishi
CHEMICAL & PHARMACEUTICAL BULLETIN, 63, 6, 397, 407, Jun. 2015, [Peer-reviewed]
English - Rhodium(I)-Catalyzed Intermolecular [2+2+2] Cycloaddition of Allenyl Aldehydes with Alkynes and Related Cyclization
Yoshihiro Oonishi; Akira Saito; Yoshihiro Sato
ASIAN JOURNAL OF ORGANIC CHEMISTRY, 4, 1, 81, 86, Jan. 2015, [Peer-reviewed]
English, Scientific journal - [Au]/[Pd] Multicatalytic Processes: Direct One-Pot Access to Benzo[c]chromenes and Benzo[b]furans
Yoshihiro Oonishi; Adrian Gomez-Suarez; Anthony R. Martin; Yusuke Makida; Alexandra M. Z. Slawin; Steven P. Nolan
CHEMISTRY-A EUROPEAN JOURNAL, 20, 42, 13507, 13510, Oct. 2014, [Invited]
English, Scientific journal - Rhodium(I)-Catalyzed Cyclization of Allenynes with a Carbonyl Group through Unusual Insertion of a C=O Bond into a Rhodacycle Intermediate
Yoshihiro Oonishi; Takayuki Yokoe; Akihito Hosotani; Yoshihiro Sato
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 53, 4, 1135, 1139, Jan. 2014, [Invited]
English, Scientific journal - Construction of tricyclic pyran derivatives through intramolecular [2+2+2] cycloaddition of allenynes with tethered aldehydes
Yoshihiro Oonishi; Yoshitaka Kitano; Yoshihiro Sato
TETRAHEDRON, 69, 36, 7713, 7718, Sep. 2013
English, Scientific journal - Hydrophenoxylation of Alkynes by Cooperative Gold Catalysis
Yoshihiro Oonishi; Adrian Gomez-Suarez; Anthony R. Martin; Steven P. Nolan
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 52, 37, 9767, 9771, Sep. 2013
English, Scientific journal - [{Au(NHC)}(2)(mu-OH)][BF4]: Silver-Free and Acid-Free Catalysts for Water-Inclusive Gold-Mediated Organic Transformations
Adrian Gomez-Suarez; Yoshihiro Oonishi; Sebastien Meiries; Steven P. Nolan
ORGANOMETALLICS, 32, 4, 1106, 1111, Feb. 2013
English, Scientific journal - Synthesis, characterisation, and oxygen atom transfer reactions involving the first gold(I)-alkylperoxo complexes
Alba Collado; Adrian Gomez-Suarez; Yoshihiro Oonishi; Alexandra M. Z. Slawin; Steven P. Nolan
CHEMICAL COMMUNICATIONS, 49, 91, 10745, 10747, 2013, [Peer-reviewed]
English, Scientific journal - C-sp3-H Bond Activation Triggered by Formation of Metallacycles: Rhodium(I)-Catalyzed Cyclopropanation/Cyclization of Allenynes
Yoshihiro Oonishi; Yoshitaka Kitano; Yoshihiro Sato
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 51, 29, 7305, 7308, 2012, [Peer-reviewed]
English, Scientific journal - Construction of Monocyclic Eight-Membered Rings: Intermolecular Rhodium(I)-Catalyzed [6+2] Cycloaddition of 4-Allenals with Alkynes
Yoshihiro Oonishi; Akihito Hosotani; Yoshihiro Sato
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 51, 46, 11548, 11551, 2012, [Peer-reviewed]
English, Scientific journal - Rh(I)-Catalyzed Formal [6+2] Cycloaddition of 4-Allenals with Alkynes or Alkenes in a Tether
Yoshihiro Oonishi; Akihito Hosotani; Yoshihiro Sato
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 133, 27, 10386, 10389, Jul. 2011, [Peer-reviewed]
English, Scientific journal - Total Synthesis of (-)-Corynantheidine by Nickel-Catalyzed Carboxylative Cyclization of Enynes
Takashi Mizuno; Yoshihiro Oonishi; Masanori Takimoto; Yoshihiro Sato
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, 2011, 14, 2606, 2609, May 2011
English, Scientific journal - Rhodium(I)-Catalyzed Hydroacylation/Cycloisomerization Cascade Reaction: Application to the Construction of the Tricyclic Core of Guanacastepenes
Yoshihiro Oonishi; Ai Taniuchi; Yoshihiro Sato
SYNTHESIS-STUTTGART, 17, 2884, 2892, Sep. 2010
English, Scientific journal - Rhodium(I)-Catalyzed Cycloisomerization of 1,3-Dienes with Alkenes in a Tether
Yoshihiro Oonishi; Akira Saito; Miwako Mori; Yoshihiro Sato
SYNTHESIS-STUTTGART, 6, 969, 979, Mar. 2009
English, Scientific journal - Study on Rh(I)-catalyzed cycloisomerization of dienes with alkenes in ionic liquids: effect of the structure of ILs on catalyst recyclability
Yoshihiro Oonishi; Akira Saito; Yoshihiro Sato
GREEN CHEMISTRY, 11, 3, 330, 333, 2009
English, Scientific journal - CONSTRUCTION OF CHIRAL QUATERNARY CARBON CENTERS VIA PALLADIUM-CATALYZED ASYMMETRIC DECONJUGATIVE ALLYLATION
Hiroki Yamamoto; Yoshihiro Oonishi; Yoshibiro Sato
HETEROCYCLES, 76, 2, 1485, 1495, Nov. 2008
English, Scientific journal - Nickel-catalyzed enantio- and diastereoselective three-component coupling of 1,3-dienes, aldehydes, and silanes using chiral N-heterocyclic carbenes as ligands
Yoshihiro Sato; Yu Hinata; Reiko Seki; Yoshihiro Oonishi; Nozomi Saito
ORGANIC LETTERS, 9, 26, 5597, 5599, Dec. 2007, [Peer-reviewed]
English, Scientific journal - Rh(I)-catalyzed intramolecular hydroacylation in ionic liquids
Yoshihiro Oonishi; Jiro Ogura; Yoshihiro Sato
TETRAHEDRON LETTERS, 48, 42, 7505, 7507, Oct. 2007
English, Scientific journal - P-8 Synthesis of Polycyclic Compounds via Rh(I)-Catalyzed Cascade Cyclization
Oonishi Yoshihiro; Taniuchi Ai; Sato Yoshihiro
Symposium on the Chemistry of Natural Products, symposium papers, 49, 503, 508, Symposium on the chemistry of natural products, 24 Aug. 2007
Japanese, We have recently reported a novel Rh(I)-catalyzed cascade reaction by combination of a hydroacylation of 4,6-dienal and a cycloisomerization of the resultant triene, giving a bicyclo[5.3.0]decenone derivative (Scheme 1). By the use of the cascade reaction, the synthesis of (±)-epiglobulol has been also accomplished. Herein, we report the construction of polycyclic compounds using the Rh(I)-catalyzed cascade reaction with the aim of the synthesis of Guanacastepenes (Scheme 2). Treatment of syn-3 with 10 mol% of [Rh(dppe)]ClO4 in dichloroethane at 65 ℃ for 6 h gave the desired tricyclic compound syn-4 in 34% yield along with syn-S, anti-4, and anti-5 in 8%, 7%, and 23% yields, respectively (Scheme 3). It was thought that bicyclic compound syn-5 was formed through reductive elimination from 6 (Scheme 4). On the other hand, anti-4, and anti-5 should be produced from anti-3, which would be formed from syn-3 via epimerization of a-proton of the aldehyde moiety syn-3. In the cyclization of anti-3 under the same conditions, bicyclic compound anti-5 was produced as the major product in 32% yield and the desired tricyclic compound anti-4 was produced in only 9% yield. These results indicate that the stereochemistry of cyclohexane ring in 3 affects on the reaction course. In order to prevent the isomerization of syn-3 to anti-3, the reactions of syn-3 were examined under the various conditions (Table 1). It was found that the cyclization of syn-3 in the presence of MS 4A gave the cyclized product syn-4 in 61% yield as the major product, while anti-4 and anti-5 derived from anti-3 were not obtained. - Rhodium(I)-catalyzed intramolecular hydroacylation of 4,6-dienals: Novel synthesis of cycloheptenones
Yoshihiro Oonishi; Miwako Mori; Yoshihiro Sato
SYNTHESIS-STUTTGART, 15, 2323, 2336, Aug. 2007
English, Scientific journal - Rh(I)-catalyzed hydroacylation/cycloisomerization cascade: synthesis of (+/-)-epiglobulol
Yoshihiro Oonishi; Ai Taniuchi; Miwako Mori; Yoshihiro Sato
TETRAHEDRON LETTERS, 47, 32, 5617, 5621, Aug. 2006
English, Scientific journal - Suzuki-Miyaura, alpha-ketone arylation and dehalogenation reactions catalyzed by a versatile N-heterocyclic carbene-palladacycle complex
O Navarro; N Marion; Y Oonishi; RA Kelly; SP Nolan
JOURNAL OF ORGANIC CHEMISTRY, 71, 2, 685, 692, Jan. 2006
English, Scientific journal - General and efficient methodology for the Suzuki-Miyaura reaction in technical grade 2-propanol
O Navarro; Y Oonishi; RA Kelly; ED Stevens; O Briel; SP Nolan
JOURNAL OF ORGANOMETALLIC CHEMISTRY, 689, 23, 3722, 3727, Nov. 2004, [Peer-reviewed]
English, Scientific journal - Novel synthesis of conjugated dienes attached to a quaternary carbon center via Pd(0)-catalyzed deconjugative allylation of alkenylidenemalonates
Y Sato; Y Oonishi; M Mori
JOURNAL OF ORGANIC CHEMISTRY, 68, 25, 9858, 9860, Dec. 2003, [Peer-reviewed]
English, Scientific journal - Novel rhodium(I)-catalyzed cycloisomerization of 1,3-diene with alkene in a tether: Competitive reaction with [4+2] cycloaddition
Y Sato; Y Oonishi; M Mori
ORGANOMETALLICS, 22, 1, 30, 32, Jan. 2003, [Peer-reviewed]
English, Scientific journal - A new method for the synthesis of cycloheptenones by Rh-1-catalyzed intramolecular hydroacylation of 4,6-dienals
Y Sato; Y Oonishi; M Mori
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 41, 7, 1218, +, 2002, [Peer-reviewed]
English, Scientific journal
- Rhodium(I)-catalyzed enantioselective intramolecular hydroacylation through dynamic kinetic resolution
高岸和輝; LIU Yi-Min; 大西英博; 佐藤美洋, 日本薬学会年会要旨集(Web), 141st, 2021 - Au(I)and Zn(II)-Catalyzed Sequential Reactions of Ynamide for Synthesis of Oxindoles
本郷伶奈; 大西英博; NOLAN Steven P.; 佐藤美洋, 日本薬学会年会要旨集(Web), 141st, 2021 - Au(I)触媒によるアリルアルコールのイナミドへの付加/Claisen転位を経由するδ,γ-不飽和アミドの合成
宮入愛咲季; 大西英博; NOLAN Steven P; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 139th, 2019 - Rh(I)触媒による4-アレナールとアルキンの[6+2]環化付加反応を鍵工程としたLongpene Bの合成研究
櫻谷宙生; 大西英博; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 138th, 2018 - Au(I)触媒によるアリルアルコールのイノールエーテルへの求核付加/Claisen転位を経由するγ,δ-不飽和エステルの合成
大西英博; 三澤壮太; 宮入愛咲季; STEVEN P. Nolan; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 138th, 2018 - Rh(I)触媒によるアリルアルコールの異性化/アルキンの分子内ヒドロアシル化を経由する触媒的不斉環化反応
根岸汀; 増崎修一; 大西英博; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 138th, 2018 - 銅錯体を用いたシクロブタノールの開環を伴う求電子剤とのカップリング反応
益山裕輔; 石原義弘; 大西英博; 佐藤美洋, 反応と合成の進歩シンポジウム講演要旨集, 44th, 2018 - Rh(I)触媒によるアリルアルコールとアルキン間での触媒的分子内不斉環化反応の開発
増崎修一; 坂本駿希; 大西英博; 佐藤美洋, 日本化学会春季年会講演予稿集(CD-ROM), 97th, 2017 - Rh(I)触媒によるアリルアルコールとアルキン間での分子内不斉環化反応の開発
大西英博; 増崎修一; 根岸汀; 佐藤美洋, 次世代を担う有機化学シンポジウム講演要旨集, 15th, 2017 - 銅錯体によるシクロブタノールのエナンチオ選択的な開環を伴うカルボキシル化反応の開発
石原義弘; 大西英博; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 137th, 2017 - Rh(I)触媒による4-アレナールとカルボニル化合物の分子間[6+2]環化付加反応を利用した8員環ラクチンの合成
濱野泰輔; 武田健矢; 大西英博; 佐藤美洋, 複素環化学討論会講演要旨集, 47th, 2017 - ローダサイクル中間体の形成を引き金とするC-H結合及びO-H結合の切断を伴うエニンの不斉環化反応の開発
増崎修一; 坂本駿希; 大西英博; 佐藤美洋, 万有生命科学振興国際交流財団札幌シンポジウム, 28th, 2016 - Rh(I)触媒によるアリルアルコール-アルキン間での触媒的不斉環化反応の開発
増崎修一; 大西英博; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 136th, 2016 - Rh(I)触媒によるアレンインとカルボニル間の分子内環化反応:ビシクロ[6.3.0]ウンデカン骨格構築法の開発
横江貴之; 大西英博; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 136th, 2016 - ローダサイクルの形成を引き金とするエニンの触媒的不斉環化反応:C-H結合及びO-H結合の切断を伴う四置換炭素の構築
大西英博; 増崎修一; 坂本駿希; 佐藤美洋, 反応と合成の進歩シンポジウム講演要旨集, 42nd, 2016 - アザローダサイクル中間体を経由する新規環化反応の開発
大西英博; 羽藤啓夫; 佐藤美洋; 佐藤美洋, 次世代を担う有機化学シンポジウム講演要旨集, 13th, 2015 - ロジウム触媒による[6+2]環化付加反応を利用した8員環ラクトンの合成
大西英博; 武田健矢; 細谷昭仁; 佐藤美洋; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 135th, 2015 - ローダサイクル中間体への炭素-窒素二重結合の挿入を経由するエニンの新規環化反応
羽藤啓夫; 大西英博; 佐藤美洋; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 135th, 2015 - Rh(I)触媒によるC(sp3)-H結合活性化を経由するエニンの触媒的不斉環化反応の開発
坂本駿希; 大西英博; 佐藤美洋; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 135th, 2015 - ローダサイクル中間体を経由するアレンイン-カルボニル間の分子内環化反応
横江貴之; 大西英博; 佐藤美洋; 佐藤美洋, 反応と合成の進歩シンポジウム講演要旨集, 41st, 2015 - ローダサイクル中間体を経由する環化反応の開発と有機合成への応用
大西英博, 日本薬学会年会要旨集(CD-ROM), 134th, 2014 - ローダサイクル中間体への炭素-窒素二重結合の挿入を経る新規環化反応の開発
羽藤啓夫; 羽藤啓夫; 横江貴之; 大西英博; 佐藤美洋; 佐藤美洋, 日本薬学会年会要旨集(CD-ROM), 134th, 2014 - オキソローダサイクル中間体を経由する新規環化反応の開発
細谷昭仁; 大西英博; 佐藤美洋, 次世代を担う有機化学シンポジウム講演要旨集, 11th, 2013 - オキサローダサイクル中間体を経由する新規環化反応の開発:ビシクロ[5.3.0]デカトリエン骨格の構築
横江貴之; 大西英博; 細谷昭仁; 佐藤美洋, 日本化学会講演予稿集, 93rd, 4, 2013 - ロジウム触媒による4-アレナールとアルキンの分子間[6+2]環化付加反応
細谷昭仁; 大西英博; 佐藤美洋, 日本化学会講演予稿集, 93rd, 4, 2013 - Rh(I)触媒を用いたアレンインとアルデヒドの環化付加反応:ビシクロ[5.3.0]トリエン骨格の新規構築法の開発
横江貴之; 細谷昭仁; 大西英博; 佐藤美洋, 日本薬学会年会要旨集, 132nd, 2, 2012 - Rh(I)触媒による4-アレナールとアルキンの分子間[6+2]環化付加反応の開発
細谷昭仁; 大西英博; 佐藤美洋, 日本薬学会年会要旨集, 132nd, 2, 2012 - Rh(I)触媒を用いたアレンインとアルデヒドの分子内[2+2+2]環化反応の開発
北野喜隆; 大西英博; 佐藤美洋, 日本薬学会年会要旨集, 132nd, 2, 2012 - オキサローダサイクル中間体を経由する新規環化反応の開発:ビシクロ[5.3.0]デカトリエン骨格の構築
横江貴之; 細谷昭仁; 大西英博; 佐藤美洋, 万有生命科学振興国際交流財団札幌シンポジウム, 24th, 2012 - Rh(I)触媒によるアレニルアルデヒドとアルキンの不斉[2+2+2]環化付加反応の開発
齊藤誠; 大西英博; 佐藤美洋, 日本薬学会年会要旨集, 132nd, 2, 2012 - Rh(I)触媒によるアレニルアルデヒドのヒドロアシル化反応の開発
木村雄輝; 佐々木隆行; 大西英博; 佐藤美洋, 日本薬学会年会要旨集, 131st, 2, 2011 - Rh(I)触媒を用いたアレンインの三員環形成を伴う環化反応の開発
北野喜隆; 大西英博; 佐藤美洋, 日本薬学会年会要旨集, 131st, 2, 2011 - カチオン性Rh(I)触媒によるイオン性液体中でのジエン-オレフィンの環化異性化反応:触媒リサイクル型反応への応用
齊藤誠; 大西英博; 佐藤美洋, 日本薬学会年会要旨集, 128th, 2, 2008 - 新規光学活性NHC配位子を用いたNi触媒によるジエン,アルデヒド,シランの不斉三成分カップリング反応の開発
日向優; 関怜子; 大西英博; 齋藤望; 佐藤美洋, 日本薬学会年会要旨集, 128th, 2, 2008 - イオン性液体を反応場として用いた触媒リサイクル型エニンメタセシス反応の開発
川井諒平; 五十嵐絵里; 大西英博; 齋藤望; 佐藤美洋, 日本薬学会年会要旨集, 128th, 2, 2008 - Rh(I)-catalyzed cyclizations via rhodacycle intermediates: Application to the synthesis of (+/-)-epiglobulol
Yoshihiro Oonishi; Miwako Mori; Yoshihiro Sato, JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN, 65, 3, 183, 193, Mar. 2007
Japanese, Book review - 十字路
鈴木 啓介; 大西 英博; 佐藤 美洋; 松原 誠二郎; 岡本 晃充, 有機合成化学協会誌, 65, 3, 228, 228, 2007
The Society of Synthetic Organic Chemistry, Japan, Japanese - 期待される生体機能分子の実用化 ローダサイクル中間体を経由する新規環化反応の開発とその応用
佐藤 美洋; 大西 英博, 化学工業, 57, 11, 875, 879, Nov. 2006
化学工業社, Japanese - ローダサイクル中間体を経由する新規環化反応の開発とその応用
佐藤 美洋; 大西 英博, 化学工業, 57, 11, 67, 71, 2006, [Peer-reviewed], [Invited]
Japanese, Introduction scientific journal - Rh(I)錯体によるタンデム型環化反応を利用したEpiglobulolの全合成
大西英博; 森美和子; 佐藤美洋, 日本薬学会年会要旨集, 125th, 4, 2005
- 先端有機金属化学特論, 2024年, 修士課程, 生命科学院
- 大学院共通授業科目(一般科目):自然科学・応用科学, 2024年, 修士課程, 大学院共通科目
- 化学Ⅱ, 2024年, 学士課程, 全学教育
- 先端生物科学実験法Ⅰ, 2024年, 学士課程, 薬学部
- 先端生物科学実験法Ⅱ, 2024年, 学士課程, 薬学部
- 有機化学実習Ⅲ, 2024年, 学士課程, 薬学部
- 有機化学実習Ⅳ, 2024年, 学士課程, 薬学部
- KINKI CHEMICAL SOCIETY, JAPAN
- THE SOCIETY OF SYNTHETIC ORGANIC CHEMISTRY, JAPAN
- THE CHEMICAL SOCIETY OF JAPAN
- THE PHARMACEUTICAL SOCIETY OF JAPAN
- Exploration of novel reactivity of Au-vinylidene complexes and their application to asymmetric synthesis
Grants-in-Aid for Scientific Research
01 Apr. 2023 - 31 Mar. 2026
大西 英博
ビニリデン錯体の中でも、比較的研究例の少ない「Au-ビニリデン錯体」に注目し、触媒的不斉反応への応用も目指し検討を行った。まず、側鎖にアルキンを持つジヒドロシランとAu触媒との反応が、Au-ビニリデン錯体を経由して、ベンゾシロール誘導体を与えるか調べることにした。その結果、NHCを配位子に持つAu触媒を用いると、反応は効率よく進行し、ベンゾシロール誘導体が良好な収率で生成することを見出した。一方、興味深いことにAuClを触媒とすると先の反応で得られてたベンゾシロールの構造異性体が単一生成物として得られることも明らかになった。また、NHCを配位子とした反応において、Au-ビニリデン錯体を経由する反応かどうか調べるために、いくつか実験を行ったが、現在のところ、Au-ビニリデン錯体を経由する反応であるという実験的な証拠は得られていない。そこで次に、本反応の基質の適用範囲を調べることにした。アルキンとジヒドロシランを繋ぐ芳香環上に置換基を導入したところ、アルキンのパラ位やメタ位に置換基を導入しても良好な収率で反応が進行することがわかった。一方、オルト位に置換基を導入すると立体障害のためか、収率が著しく低下した。一方、シリル原子上の芳香環はその置換基の性質によらず、目的のベンゾシロール誘導体を与えた。また、芳香環の代わりにビニル基を導入しても反応は進行した。さらに、アルキン末端の置換基に関してもいくつか検討し、TMS基の代わりにTIPS基も本反応に許容であることがわかった。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 23K06044 - Synthesis of optically active cyclic compounds by rhodium-catalyzed cyclization through racemization of substrates
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2020 - 31 Mar. 2023
大西 英博
ロジウム触媒とα位に置換基を持つ6-アルキナールとの反応において、添加剤として1-プロパノールを用いると、動的速度論的光学分割が起こり、良好な収率及び不斉収率で7員環ケトンが生成することを明らかにしていた。今年度は、本反応がその他の環サイズの合成に応用可能か検討した。その結果、6員環形成反応は困難ではあったものの、8員環形成反応には応用できることがわかった。また、反応機構に関する研究も行った。すなわち、光学活性な基質とRもしくはSの絶対配置持つ配位子を用いて、それぞれ反応を行ったところ、生成物の絶対配置は配位子によってのみ制御されていることもわかった。さらに、生成物の化学変換に関しても検討した。二価のロジウム触媒及びトリエチルシラン存在下、7員環ケトンとの反応を行うと、シリルエノールエーテルが効率良く得られ、オゾン分解を行うとジケントの合成も可能であった。一方、本研究代表者は、ロジウム触媒によるアリルアルコールと動的速度的光学分割を伴うヒドロアシル化を組み合わせたカスケード反応に関する研究も行ってきている。こちらのカスケード反応に関しても7員形成反応のみ検討に留まっていたことから、基質適用範囲の拡大を目指し研究を行った。BINAP型及びSEGPHOS型などの二座配位子を用いて、側鎖にアルキンを持つアリルアルコールとの反応を行ったところ、いずれの場合もカスケード反応は進行し、良好な収率でα位に置換基をもつ5員環ケトンが得られた。現在のところ、(R)-DADMP-BINAP配位子として用いることにより、収率74%、不斉収率69%で環化体が得られることが明らかになっている。今後、更なる不斉収率の向上を目指し検討を行っていく予定である。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 20K06960 - Development of novel reactions using isomerization of allylic alcohol catalyzed by Rh(I) complex
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2017 - 31 Mar. 2020
Oonishi Yoshihiro
Rh(I)-catalyzed isomerization of allylic alcohols has been studied for many years. In this context, we investigated the development of a new reaction based on this isomerization process. As a result, it was found that the reaction of enynes, having an allylic alcohol in the tether, with a chiral rhodium complex gave 5-membered ring compounds, possessing a chiral quaternary carbon center, in high yields with high ees. And this reaction was extended to intermolecular reactions. During the investigation of these reactions, we also found a new reaction in which rhodium-catalyzed isomerization of allyl alcohols followed by hydroacylation to afford 7-membered ring compounds. Furthermore, Rh(I)-catalyzed enantioselective cyclization through C-H activation has also been developed.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, 17K08202 - Synthesis of Chiral Amino Acids by Using CO2 as a C1 Source
Grants-in-Aid for Scientific Research
01 Apr. 2014 - 31 Mar. 2018
SATO Yoshihiro; SAITO Nozomi; OONISHI Yoshihiro; MITA Tsuyoshi; DOI Ryohei
Carbon dioxide (CO2) is attractive to synthetic organic chemists as an abundant, cheap, and non-toxic carbon source. Although CO2 is very stable chemical substances, it has mainly two reactivities; one is electrophilicity of the center carbon of CO2, and the other is that C=O double bond can be activated by transition metal complexes. With respect to the former reactivity, we developed the synthesis of chiral a-amino acids through Cu-catalyzed asymmetric addition of silyl anion to N-sulfonyl imine followed by the reaction of the resultant chiral a-silyl N-sulfoneamide with CO2 in a stereoretentive manner. With respect to the latter reactivity, we developed the synthesis of a chiral b-amino acids or b-aryloxy carboxylic acids through a combination of nickel-catalyzed carboxylation of ynamides or aryl ynol ethers and rhodium-catalyzed asymmetric hydrogenation of the resultant carboxylated product.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 26293001 - Development of Novel Cyclization of Allene through Dynamic Kinetic Asymmetric Transformation
Grants-in-Aid for Scientific Research
2014 - 2016
OONISHI Yoshihiro
The hydroacylation of 4-allenal proceeded smoothly, giving 6-membered ketones in good yields (up to 84% yield) with high ee’s (up to 96% ee) even though racemic allenes were used as substrates. The mechanistic studies revealed that the nitrile would accelerate the racemization of allene rather than improve the yield and ee of the product. Additionally, I have succeeded in development of several new cyclizations using allene as a substrate. In these reactions, it was found that the racemization of allene moiety would be easy to occur under reaction conditions.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, Principal investigator, Competitive research funding, 26460001 - アレニルアルデヒドから形成されるメタラサイクルを機軸とする高次環化付加反応の開発
科学研究費補助金(基盤研究(C))
2012 - 2014
大西 英博
文部科学省, 基盤研究(C), 北海道大学, Principal investigator, Competitive research funding, 24590002 - Construction of Polycyclic Compounds via Rhodacycle Intermediate and Its Application to the Asymmetric S ynthesis
Grants-in-Aid for Scientific Research
2010 - 2011
OONISHI Yoshihiro
Rh(I)-catalyzed intermolecular cycloaddition of 4-allenals with terminal alkynes proceeds smoothly, giving 6-membered cyclic compounds in good to high yields with high regioselectivities. It was also found that in the case of the chiral allene studied, chirality is almost conserved in the course of the cyclization. During ongoing investigation of this cycloaddition, we discovered another type of cyclization of allenynes with tethered aldehydes.
Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, Principal investigator, Competitive research funding, 22790002 - Development of Rh(I)-Catalyzed Hydroacylation Using a N-Heterocyclic Carbene as a Ligand
Grants-in-Aid for Scientific Research(若手研究(B))
2008 - 2009
Yoshihiro OONISHI
A Rh(I)-NHC catalyzed hydroacylation of 4-alkenals was investigated. As a result, it was found that the hydroacylation of 4-alkenals using a NHC as a ligands proceeded smoothly, giving cyclopentanone derivatives in high yields. And during the course of my investigation, it was also clear that the reaction of allenyl aldehydes, having an alkyne in the tether, with 10 mol% Rh(I)-NHC complexes at 65℃ produced a 5-8 fused bicyclic ketones in high yields. Furthermore, I succeeded in Rh(I)-catalyzed intramolecular hydroacylation of allenyl aldehydes.
Ministry of Education, Culture, Sports, Science and Technology, 若手研究(B), 北海道大学, Principal investigator, Competitive research funding, 20790003 - Novel Reaction Using Active Species Derived from Imidazolium Salts
Grants-in-Aid for Scientific Research
2007 - 2009
SATO Yoshihiro; OONISHI Yoshihiro
The objective of this research is comprehensive understanding of the chemistry of N-heterocyclic carbenes (NHCs) and that of ionic liquids (ILs), those have recently received much attention but have been independently studied. During the term of this research project, we have succeeded in finding a novel catalytic asymmetric three-component coupling reaction of 1,3-diene, aldehyde, and silanes using a chiral NHC nickel complex. And, we have also established two Rh-catalyzed cyclizations, in which catalyst can be recycled in several times, by using IL as a reaction medium.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 19390001 - カスケード型環化反応を基盤とした多環式化合物の効率的合成法の開発とその応用
科学研究費助成事業
2006 - 2007
佐藤 美洋; 大西 英博
ワンポットで多段階の反応が準行する「カスケード型反応」は,省資源化へとつながるため,次世代の「環境調和型分子変換プロセスの開発」という観点からも注目されており,現在精力的に研究が行われている分野である.本研究課題の目的は,遷移金属触媒によって進行する反応を組み合わせ,多環式化合物の合成にも適用でき得る「カスケード型反応」の開発及びその応用研究である.本年度は特に,地球温暖化の抑制という観点からも興味深い,「二酸化炭素の固定化」を伴う環化-カルボキシル化反応の開発に焦点を当て研究を行ったところ,ニッケル触媒を用いると,エニンのアルケン上に電子求引性基を持たせた基質において環化-カルボキシル化反応が効率よく進行することを見出した.この環化-カルボキシル化反応は幅広い応用性を有し,pyrrolizidine, indolizidine,及びquinolizidine骨格の構築にも適用可能であった.更に,本環化-カルボキシル化反応を利用し,インドールアルカロイドの一種である(-)-corynantheidineの全合成にも成功した.自然界では植物のみが二酸化炭素を光合成によって消費しており,人類を含む他のすべての動物は呼吸により二酸化炭素を産出している.特に人類は,その社会活動・経済活動によってもより多くの二酸化炭素を産出しており,地球温暖化の抑制のためには二酸化炭素を消費するプロセスの確立が重要である.本研究では,ニッケル触媒を用いることにより二酸化炭素を消費しつつ有用な化合物の合成に成功したことになり,地球温暖化対策の第一ステップとしても意義深いと考える.
日本学術振興会, 特定領域研究, 北海道大学, 18032003 - ロジウム錯体による新規環化反応の開発
科学研究費助成事業
2003 - 2004
大西 英博
本研究代表者はRh(I)錯体による4,6-ジエナール類のヒドロアシル化反応を経由する7員環形成反応及びジエン-オレフィンの環化異性化反応を見いだし既に報告している。そこでこれらの二つの環化反応を組み合わせたタンデム型環化反応を計画した。すなわち、側鎖にジエンを持つ4,6-ジエナール類とRh(I)錯体を反応させるならば、まずヒドロアシル化反応が進行し7員環化合物を与え、つづいて7員環内オレフィンと側鎖のジエンとの間で環化異性化反応が進行し、一工程でビシクロ[5.3.0]デセノン骨格を有する環状化合物が得られるのではないかと考えた。そこでまず、(4E,6E,10E,12E)-15-フェニルペンタデカ-4,6,10,12-テトラエナールを合成しRh(I)錯体との反応を行ったところ、目的とする二環式化合物は全く得られず、一段階目のヒドロアシル化反応のみが進行し生成した7員環化合物が66%の収率で得られた。そこで、Thorpe-Ingold effectを利用し、二段階目の反応である環化異性化反応を促進させることを考え、側鎖のジエンと4,6-ジエナールとの間、9位に二つの置換基を導入した基質を合成することにした。9位に二つの置換基を導入した基質は本研究代表者が先に開発したPd錯体によるアルケニデンマロナート誘導体の脱共役を伴うアリル化反応を利用して収率よく合成し、当初の目的であるRh(I)錯体によるタンデム型環化反応について検討した。その結果、ヒドロアシル化反応及び環化異性化反応が順次進行し、二環式化合物が単一生成物として44%の収率で得られた。このようにRh(I)錯体が全く異なる二つの環化反応を触媒し、一工程で立体化学が完全に制御されたビシクロ[5.3.0]デセノン骨格を構築できたことは非常に興味深い。また、本タンデム型環化反応の天然物合成への応用として(±)-Epiglobulolの合成も達成した。
日本学術振興会, 特別研究員奨励費, 北海道大学, 03J09833
