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Search DetailsShimizu Yohei
| Faculty of Science Chemistry Organic and Biological Chemistry | Associate Professor |
| Institute for Integrated Innovations Institute for Chemical Reaction Design and Discovery | Associate Professor |
Researcher basic information
■ Degree- PhD, The University of Tokyo, Mar. 2011
- Master, The University of Tokyo, Mar. 2008
- Bachelor, The University of Tokyo, Mar. 2006
researchmap URLホームページURL■ Various IDs
J-Global ID■ Research Keywords and Fields
Research KeywordResearch Field
- Nanotechnology/Materials, Synthetic organic chemistry, Catalytic Reaction
- Life Science, Pharmaceutical chemistry and drug development sciences
- Bachelor's degree program, School of Science
- Master's degree program, Graduate School of Chemical Sciences and Engineering
- Doctoral (PhD) degree program, Graduate School of Chemical Sciences and Engineering
Career
■ CareerCareer
- Apr. 2023 - Present
Hokkaido University, List Sustainable Digital Transformation Catalyst Collaboration Research Platform, Institute for Chemical Reaction Design and Discovery (ICReDD List-PF), Principal Investigator (PI) - Nov. 2020 - Present
Hokkaido University, WPI-ICReDD, Associate Professor - Nov. 2020 - Present
Hokkaido University, Faculty of Science Department of Chemistry, Associate Professor, Japan - Aug. 2025 - Sep. 2025
Université de Toulouse, Visiting Assistant Professor - Apr. 2019 - Oct. 2020
Hokkaido University, WPI-ICReDD, Lecturer - Jan. 2018 - Oct. 2020
Hokkaido University, Faculty of Science Department of Chemistry, Lecturer - Apr. 2015 - Dec. 2017
The University of Tokyo, Graduate School of Pharmaceutical Sciences, 助教 - Apr. 2011 - Mar. 2015
The University of Tokyo, Graduate School of Pharmaceutical Sciences, 特任助教 - Apr. 2008 - Mar. 2011
Japan Society for the Promotion of Science, 特別研究員(DC1)
- Apr. 2006 - Mar. 2011, The University of Tokyo, Graduate School of Pharmaceutical Sciences
- Apr. 2004 - Mar. 2006, The University of Tokyo, Faculty of Pharmaceutical Sciences
- Apr. 2002 - Mar. 2004, The University of Tokyo, Department of Arts and Sciences, Natural Sciences II
Research activity information
■ Awards- Feb. 2023, 日本化学会北海道支部, 2022年度 日本化学会北海道支部奨励賞
保護基フリー合成を指向した化学選択的触媒反応の開発
清水洋平 - Jan. 2020, Thieme Chemistry Journals, Thieme Chemistry Journals Award
Yohei Shimizu - Mar. 2019, The Pharmaceutical Society of Japan, The Pharmaceutical Society of Japan Award for Young Scientists
Development of Chemoselective Reactions by Exploiting Nature of Catalyst
Yohei Shimizu - Mar. 2018, The Chemical Society of Japan, The Chemical Society of Japan Lecture Award
一価銅触媒の特性を活かした化学選択的反応の開発
清水洋平 - 2015, 有機合成化学協会, TORAY Award in Synthetic Organic Chemistry
ホウ素触媒と遷移金属触媒の協奏的効果によるカルボン酸の化学選択的修飾反応の開発
Yohei Shimizu - Aug. 2013, ArmChemFront 2013, Best Poster Prize
In situ catalytic generation of allylcopper species and its direct use for asymmetric allylation
Yohei Shimizu
- Silver-catalyzed enantioselective aldol reaction of isocyanoacetic acid derivatives with prolinol-phosphine-sec-amine chiral ligand
Satoshi Sakai; Kakeru Maeda; Yohei Shimizu; Masaya Sawamura
Chemistry Letters, 30 Apr. 2026, [Peer-reviewed], [Corresponding author]
Scientific journal - Copper‐Catalyzed Asymmetric Michael Reaction of α‐Substituted Cyanoacetates with Acrylates and Acrylamides with Prolinol‐Phosphine‐sec‐Amine Chiral Ligand
Mai Onizawa; Satoshi Sakai; Irtaza Qureshi; Yohei Shimizu; Masaya Sawamura
European Journal of Organic Chemistry, 22 Apr. 2026, [Peer-reviewed], [Invited], [Corresponding author]
Scientific journal - Reductively Stable Platinum Catalyst Enabling Metallaphotoredox Reductive Allylation of Ketones, Aldehydes, and Imines
Junpei Shimosato; Kousei Nishimura; Bunta Fukuyo; Yohei Shimizu; Masaya Sawamura; Yusuke Masuda
ChemistryEurope, Mar. 2026, [Peer-reviewed]
Scientific journal - Photoinduced Boron‐Catalyzed Direct α‐Aminoxylation of Carboxylic Acids
Tsubasa Oyama; Takuto Morisawa; Yukiho Yoshida; Yoshito Heike; Masaya Sawamura; Yohei Shimizu
ChemistryEurope, Feb. 2026, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal - Silver-Catalyzed Asymmetric Aldol Reaction of Nonactivated Ketones with α-Isocyanocarboxylic Acid Derivatives Enabled by Prolinol-phosphine-sec-amine Chiral Ligand
Satoshi Sakai; Kei Uchiyama; Koji Imai; Kazuna Yato; Mai Onizawa; Kosuke Higashida; Hiroyasu Sato; Yoshitaka Aoyama; Yohei Shimizu; Masaya Sawamura
ACS Catalysis, 19 Sep. 2025, [Peer-reviewed], [Corresponding author]
Scientific journal - Photoinduced Direct β‐Allylation of Carboxylic Acids Enabled by Boron Catalysis with a Mixed Two‐Ligand System
Kai Sun; Yoshito Heike; Yukiho Yoshida; Masaya Sawamura; Dennis Chung‐Yang Huang; Yohei Shimizu
ChemCatChem, 17, 11, Wiley, 10 Apr. 2025, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal, Abstract
A visible‐light‐induced, boron‐catalyzed direct β‐allylation of carboxylic acids with allylsulfones was developed. The selective promotion of β‐allylation over the competing α‐allylation was achieved by the combined use of a bulky binaphthol derivative and an N‐sulfonyl valine derivative as ligands for the boron catalyst. Photoexcitation of catalytically generated diboron ene‐1,1‐diolates induces single‐electron transfer to the allylsulfones, and ensuing deprotonation of the resulting radical cations generates β‐radicals, directing C–C bond formation at the β‐position. The versatility of this catalysis was demonstrated through its application to various pharmaceutical compounds. Furthermore, by leveraging the unique features of the carboxy group preserved in the products, subsequent transformations were successfully achieved, showcasing the capability of the boron catalysis in rapidly increasing the molecular complexity of carboxylic acids. - Phosphorus catalysis enabling α-sp3-C–H amination of 2-alkylpyridines
Yoshito Heike; Asa Tagata; Akira Yada; Kanako Nozawa-Kumada; Masaya Sawamura; Yohei Shimizu
Organic Chemistry Frontiers, 2025, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal - Oxyamination of alkenes enabled by direct photoexcitation of fluorenone oxime derivatives
Asa Tagata; Masaya Sawamura; Yohei Shimizu
Chemistry Letters, 53, 12, upae216, Oxford University Press (OUP), 20 Nov. 2024, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal, Abstract
Visible-light-induced oxyamination of alkenes was developed using fluorenone oxime carbonate as a photoactivatable agent. The nitrogen atom was selectively incorporated at the internal position, constructing a sterically congested α-tertiary amine moiety. The reaction proceeded without any photocatalyst and in the presence of various additives with different functional groups, highlighting the simplicity and robustness of the protocol. Moreover, the fluorenone oxime motif proved effective for visible-light-induced decarboxylative carboamination and diamination of alkenes. - Copper(I)-Catalyzed Asymmetric Nucleophilic Addition to Aldehydes with Skipped Enynes
Cheng Peng; Tianle Wu; Xueyan Yang; Mengyao Pei; Siyuan Wang; Motomu Kanai; Yohei Shimizu; Xiaofeng Wei
Organic Letters, 26, 47, 10072, 10077, American Chemical Society (ACS), 18 Nov. 2024, [Peer-reviewed], [Corresponding author]
Scientific journal - Boron-Catalyzed Michael Reaction of Donor–Acceptor Carboxylic Acid Pairs Enabling Direct Synthesis of 1,5-Dicarboxylic Acids
Yukiho Yoshida; Masaya Sawamura; Yohei Shimizu
Organic Letters, 26, 26, 5425, 5429, American Chemical Society (ACS), 19 Jun. 2024, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal - The Aldol Reaction: Group III Enolates
Masaya Sawamura; Yohei Shimizu
Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, Elsevier, 2024, [Peer-reviewed], [Invited], [Last author, Corresponding author]
English, In book - 20.2.1.8.15 Synthesis of Carboxylic Acids with Retention of the Functional Group (Update 2024)
M. Sawamura; Y. Shimizu
Knowledge Updates 2024/2, Georg Thieme Verlag KG, 2024, [Peer-reviewed], [Invited], [Last author, Corresponding author]
English, In book, Abstract
Carboxylic acids are readily available feedstock materials, and are also found in natural products, pharmaceuticals, agrochemicals, and other biologically active compounds. Hence, efficient methods to transform carboxylic acids into other value-added compounds is of great importance. This review is an update to Science of Synthesis Section 20.2.1.8 on the synthesis of carboxylic acids with “retention of the functional group”. The main focus of this review is placed on asymmetric reactions and catalytic reactions, along with practical stoichiometric reactions, reported in the period 2010–2022. The transformations discussed include α-functionalizations, conjugate additions, and C(sp2)—H as well as C(sp3)—H functionalizations. - Visible-Light-Induced Aminochlorination of Alkenes
Emna Mejri; Kosuke Higashida; Yuta Kondo; Anna Nawachi; Hiroyuki Morimoto; Takashi Ohshima; Masaya Sawamura; Yohei Shimizu
Organic Letters, 25, 24, 4581, 4585, American Chemical Society (ACS), 08 Jun. 2023, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal - Direct α-Trifluoromethylthiolation of Carboxylic Acids Enabled by Boron Catalysis
Kai Sun; Chung-Yang Dennis Huang; Masaya Sawamura; Yohei Shimizu
Synlett, Georg Thieme Verlag KG, 11 Apr. 2023, [Peer-reviewed], [Invited], [Last author, Corresponding author]
Scientific journal, A boron-catalyzed direct α-trifluoromethylthiolation of carboxylic acids was developed. Catalytically generated boron enediolates reacts with electrophilic SCF3 reagent, N-SCF3-phthalimide, to provide α-SCF3 carboxylic acids without the need of substrate pre-activation. The method is applicable to direct modification of bioactive carboxylic acids. Data science analyses provided suitable models for substrate classification as well as yield prediction., 40154829;40154830;27349496 - Boron-Catalyzed alpha-Functionalizations of Carboxylic Acids
Yohei Shimizu; Motomu Kanai
CHEMICAL RECORD, Jan. 2023, [Peer-reviewed], [Invited], [Lead author, Corresponding author]
English, Scientific journal - Boron Catalysis in the Transformation of Carboxylic Acids and Carboxylic Acid Derivatives
Masaya Sawamura; Yohei Shimizu
European Journal of Organic Chemistry, Wiley, 25 Nov. 2022, [Peer-reviewed], [Invited], [Last author, Corresponding author]
English, Scientific journal - Silver‐Catalyzed Asymmetric Aldol Reaction of Isocyanoacetic Acid Derivatives Enabled by Cooperative Participation of Classical and Nonclassical Hydrogen Bonds
Satoshi Sakai; Akane Fujioka; Koji Imai; Kei Uchiyama; Yohei Shimizu; Kosuke Higashida; Masaya Sawamura
Advanced Synthesis & Catalysis, 364, 14, 2333, 2339, Wiley, 21 Jun. 2022, [Peer-reviewed]
Scientific journal - Insights into the Mechanism of Enantioselective Copper‐Catalyzed Ring‐Opening Allylic Alkylation of Cyclopropanols
Akito Kitabayashi; Sho Mizushima; Kosuke Higashida; Yuto Yasuda; Yohei Shimizu; Masaya Sawamura
Advanced Synthesis & Catalysis, 364, 11, 1855, 1862, Wiley, 27 Apr. 2022, [Peer-reviewed]
Scientific journal - Visible Light-Induced Reductive Alkynylation of Aldehydes by Umpolung Approach
Ibuki Tanaka; Masaya Sawamura; Yohei Shimizu
Organic Letters, 24, 2, 520, 524, American Chemical Society ({ACS}), 21 Jan. 2022, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal - Synthesis of C,N,N-Cyclometalated Gold(III) Complexes with Anionic Amide Ligands
Ryotaro Niizeki; Kosuke Higashida; Emna Mejri; Masaya Sawamura; Yohei Shimizu
Synlett, Georg Thieme Verlag {KG}, 19 Oct. 2021, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal, A series of neutral C,N,N Au(III) complexes was synthesized with N-(8-quinolinyl)benzamide derivatives and chiral N-(2-(oxazolin-2-yl)phenyl)benzamide derivatives. This convenient synthesis method for amide ligands as well as an operationally simple complexation by direct C-H auration permitted changes to both the steric and electronic properties of the Au(III) complexes for promoting catalytic three-component coupling of an aldehyde, an amine, and an alkyne. - Visible-Light-Driven α-Allylation of Carboxylic Acids
Kai Sun; Masato Ueno; Keisuke Imaeda; Kosei Ueno; Masaya Sawamura; Yohei Shimizu
ACS Catalysis, 11, 15, 9722, 9728, American Chemical Society ({ACS}), 06 Aug. 2021, [Peer-reviewed], [Last author, Corresponding author]
Scientific journal - Data-Driven Catalyst Optimization for Stereodivergent Asymmetric Synthesis of α-Allyl Carboxylic Acids by Iridium/boron Hybrid Catalysis
Hongyu Chen; Shigeru Yamaguchi; Yuya Morita; Hiroyasu Nakao; Xiangning Zhai; Yohei Shimizu; Harunobu Mitsunuma; Motomu Kanai
American Chemical Society (ACS), 13 May 2021, [Peer-reviewed]
Asymmetric catalysis enabling divergent control of multiple stereocenters remains challenging in synthetic organic chemistry. While machine learning-based optimization of molecular catalysis is an emerging approach, data-driven catalyst design to achieve stereodivergent asymmetric synthesis producing multiple reaction outcomes, such as constitutional selectivity, diastereoselectivity, and enantioselectivity, is unprecedented. Here, we report the straightforward identification of asymmetric two-component iridium/boron hybrid catalyst systems for α-C-allylation of carboxylic acids. Structural optimization of the chiral ligands for iridium catalysts was driven by molecular field-based regression analysis with a dataset containing overall 32 molecular structures. The catalyst systems enabled selective access to all the possible isomers of chiral carboxylic acids bearing contiguous stereocenters. This stereodivergent asymmetric catalysis is applicable to late-stage structural modifications of drugs and their derivatives. - Iridium‐Catalyzed Enantioselective Transfer Hydrogenation of Ketones Controlled by Alcohol Hydrogen‐Bonding and sp 3 ‐C−H Noncovalent Interactions
Hiroaki Murayama; Yoshito Heike; Kosuke Higashida; Yohei Shimizu; Nuttapon Yodsin; Yutthana Wongnongwa; Siriporn Jungsuttiwong; Seiji Mori; Masaya Sawamura
Advanced Synthesis & Catalysis, 362, 21, 4655, 4661, Wiley, 04 Nov. 2020, [Peer-reviewed]
English, Scientific journal - Front Cover Picture: Iridium‐Catalyzed Enantioselective Transfer Hydrogenation of Ketones Controlled by Alcohol Hydrogen‐Bonding and sp3‐C−H Noncovalent Interactions (Adv. Synth. Catal. 21/2020)
Hiroaki Murayama; Yoshito Heike; Kosuke Higashida; Yohei Shimizu; Nuttapon Yodsin; Yutthana Wongnongwa; Siriporn Jungsuttiwong; Seiji Mori; Masaya Sawamura
Advanced Synthesis & Catalysis, 362, 21, 4445, 4445, Wiley, 15 Sep. 2020
Scientific journal - Development of Copper-Catalyzed Chemoselective Reactions
Yohei Shimizu
Chemical and Pharmaceutical Bulletin, 68, 5, 405, 420, Pharmaceutical Society of Japan, 01 May 2020, [Peer-reviewed], [Invited], [Lead author, Last author, Corresponding author]
English, Scientific journal - Copper-catalyzed enantioselective conjugate reduction of α,β-unsaturated esters with chiral phenol–carbene ligands
Shohei Mimura; Sho Mizushima; Yohei Shimizu; Masaya Sawamura
Beilstein Journal of Organic Chemistry, 16, 537, 543, Beilstein Institut, 31 Mar. 2020, [Peer-reviewed]
Scientific journal - A Stable and Cleavable O-Linked Spacer for Drug Delivery Systems
Kei Ito; Toshifumi Tatsumi; Kazuki Takahashi; Yohei Shimizu; Kenzo Yamatsugu; Motomu Kanai
Chemical and Pharmaceutical Bulletin, 68, 3, 212, 215, 01 Mar. 2020, [Peer-reviewed]
English, Scientific journal - Cupid and Psyche system for the diagnosis and treatment of advanced cancer
Akira SUGIYAMA; Takeshi KAWAMURA; Toshiya TANAKA; Hirofumi DOI; Takefumi YAMASHITA; Keiko SHINODA; Hideaki FUJITANI; Kenzo YAMATSUGU; Yohei SHIMIZU; Toshifumi TATSUMI; Kazuki TAKAHASHI; Motomu KANAI; Eiichi MIZOHATA; Tatsuya KAWATO; Takefumi DOI; Tsuyoshi INOUE; Tatsuhiko KODAMA
Proceedings of the Japan Academy, Series B, 95, 10, 602, 611, Japan Academy, 11 Dec. 2019, [Peer-reviewed], [Domestic magazines]
English, Scientific journal, In advanced cancer patients, malignant cells invade and disseminate within normal cells and develop resistance to therapy with additional genetic mutations, which makes radical cure very difficult. Precision medicine against advanced cancer is hampered by the lack of systems aimed at multiple target molecules within multiple loci. Here, we report the development of a versatile diagnostic and therapeutic system for advanced cancer, named the Cupid and Psyche system. Based on the strong non-covalent interaction of streptavidin and biotin, a low immunogenic mutated streptavidin, Cupid, and a modified artificial biotin, Psyche, have been designed. Cupid can be fused with various single-chain variable fragment antibodies and forms tetramer to recognize cancer cells precisely. Psyche can be conjugated to a wide range of diagnostic and therapeutic agents against malignant cells. The Cupid and Psyche system can be used in pre-targeting therapy as well as photo-immunotherapy effectively in animal models supporting the concept of a system for precision medicine for multiple targets within multiple loci. - Boron-Catalyzed α-Amination of Carboxylic Acids
Yohei Shimizu
Organic Letters, 21, 18, 7466, 7469, American Chemical Society (ACS), 05 Sep. 2019, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal - Copper(I)-Catalyzed Stereodivergent Propargylation of N-Acetyl Mannosamine for Protecting Group Minimal Synthesis of C3-Substituted Sialic Acids.
Ishizawa K; Majima S; Wei XF; Mitsunuma H; Shimizu Y; Kanai M
The Journal of organic chemistry, 84, 17, 10615, 10628, Aug. 2019, [Peer-reviewed], [Corresponding author], [International Magazine]
English, Scientific journal - Asymmetric Synthesis of α-Alkylidene-β-Lactams through Copper Catalysis with a Prolinol-Phosphine Chiral Ligand
Imai, K.; Takayama, Y.; Murayama, H.; Ohmiya, H.; Shimizu, Y.; Sawamura, M.
Organic Letters, 21, 6, 1717, 1721, 15 Mar. 2019, [Peer-reviewed]
Scientific journal - Catalytic Regio- and Enantioselective Proton Migration from Skipped Enynes to Allenes
Xiao-Feng Wei; Takayuki Wakaki; Taisuke Itoh; Hong-Liang Li; Takayoshi Yoshimura; Aya Miyazaki; Kounosuke Oisaki; Miho Hatanaka; Yohei Shimizu; Motomu Kanai
Chem, 5, 3, 585, 599, Elsevier BV, Mar. 2019, [Peer-reviewed], [Corresponding author]
Scientific journal - Copper(I)-Catalyzed Enantio- and Diastereodivergent Borylative Coupling of Styrenes and Imines
Taisuke Itoh; Yamato Kanzaki; Yohei Shimizu; Motomu Kanai
Angewandte Chemie - International Edition, 57, 27, 8265, 8269, Wiley-VCH Verlag, 02 Jul. 2018, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Chemo- and Enantioselective Pd/B Hybrid Catalysis for the Construction of Acyclic Quaternary Carbons: Migratory Allylation of O-Allyl Esters to α- C-Allyl Carboxylic Acids
Fujita, T.; Yamamoto, T.; Morita, Y.; Chen, H.; Shimizu, Y.; Kanai, M.
Journal of the American Chemical Society, 140, 18, 5899, 5903, American Chemical Society, 09 May 2018, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Boron-catalyzed carboxylic acid-selective aldol reaction with trifluoromethyl ketones
Ishizawa, K.; Nagai, H.; Shimizu, Y.; Kanai, M.
Chemical and Pharmaceutical Bulletin, 66, 3, 231, 234, The Pharmaceutical Society of Japan, Mar. 2018, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Copper(I)-Catalyzed Enantioselective Addition of Enynes to Ketones
Wei, X.-F.; Xie, X.-W.; Shimizu, Y.; Kanai, M.
Journal of the American Chemical Society, 139, 13, 4647, 4650, Apr. 2017, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Copper(I)-Catalyzed Dehydrative C-Glycosidation of Unprotected Pyranoses with Ketones
XiaoFeng Wei; ShiLiang Shi; XiaoWei Xie; Yohei Shimizu; Motomu Kanai
ACS CATALYSIS, 6, 10, 6718, 6722, Oct. 2016, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Ligand-Enabled, Copper-Catalyzed Regio- and Stereoselective Synthesis of Trialkylsubstituted Alkenylboronates from Unactivated Internal Alkynes
Taisuke Itoh; Yohei Shimizu; Motomu Kanai
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 138, 24, 7528, 7531, Jun. 2016, [Peer-reviewed]
English, Scientific journal - Ligand Promoted, Boron Mediated Chemoselective Carboxylic Acid Aldol Reaction
Yohei Shimizu
Organic Letters, 18, 9, 2276, 2279, 22 Apr. 2016, [Peer-reviewed], [Corresponding author], [International Magazine]
Scientific journal - An Expeditious Synthesis of Sialic Acid Derivatives by Copper(I)-Catalyzed Stereodivergent Propargylation of Unprotected Aldoses
Xiao-Feng Wei; Yohei Shimizu; Motomu Kanai
ACS Central Science, 2, 1, 21, 26, 27 Jan. 2016, [Peer-reviewed], [Corresponding author]
Scientific journal - Catalytic Asymmetric Addition Reactions of Cu(I)-Conjugated Soft Carbon Nucleophiles
Xiaofeng Wei; Yohei Shimizu; Motomu Kanai
PROGRESS IN ENANTIOSELECTIVE CU(I)-CATALYZED FORMATION OF STEREOGENIC CENTERS, 58, 169, 182, 2016, [Peer-reviewed]
English, Scientific journal - Structure-based protein engineering for cancer therapy
Eiichi Mizohata; Tatsuya Kawato; Taisuke Nakayama; Yuji Kado; Tsuyoshi Inoue; Yohei Shimizu; Motomu Kanai; Hirofumi Doi; Akira Sugiyama; Takao Hamakubo; Tasuhiko Kodama
Dec. 2015, [Invited]
English, International conference proceedings - Copper-Catalyzed Oxyboration of Unactivated Alkenes
Taisuke Itoh; Takumi Matsueda; Yohei Shimizu; Motomu Kanai
CHEMISTRY-A EUROPEAN JOURNAL, 21, 45, 15955, 15959, Nov. 2015, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Chemoselective Boron-Catalyzed Nucleophilic Activation of Carboxylic Acids for Mannich-Type Reactions
Motomu Kanai; Yohei Shimizu; Yuya Morita; Tomohiro Yamamoto; Hideoki Nagai
SYNTHESIS-STUTTGART, 47, 19, A140, A143, Oct. 2015, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Chemoselective Boron-Catalyzed Nucleophilic Activation of Carboxylic Acids for Mannich-Type Reactions
Motomu Kanai; Yohei Shimizu; Yuya Morita; Tomohiro Yamamoto; Hideoki Nagai
SYNLETT, 26, 16, A140, A143, Oct. 2015, [Peer-reviewed]
English, Scientific journal - Structure-based design of a streptavidin mutant specific for an artificial biotin analogue.
Tatsuya Kawato; Eiichi Mizohata; Yohei Shimizu; Tomohiro Meshizuka; Tomohiro Yamamoto; Noriaki Takasu; Masahiro Matsuoka; Hiroyoshi Matsumura; Tatsuhiko Kodama; Motomu Kanai; Hirofumi Doi; Tsuyoshi Inoue; Akira Sugiyama
Journal of biochemistry, 157, 6, 467, 75, Jun. 2015, [Peer-reviewed], [International Magazine]
English, Scientific journal - Chemoselective Boron-Catalyzed Nucleophilic Activation of Carboxylic Acids for Mannich-Type Reactions
Yuya Morita; Tomohiro Yamamoto; Hideoki Nagai; Yohei Shimizu; Motomu Kanai
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 137, 22, 7075, 7078, Jun. 2015, [Peer-reviewed], [Corresponding author]
English, Scientific journal - Design and synthesis of biotin analogues reversibly binding with streptavidin.
Tomohiro Yamamoto; Kiyoshi Aoki; Akira Sugiyama; Hirofumi Doi; Tatsuhiko Kodama; Yohei Shimizu; Motomu Kanai
Chemistry, an Asian journal, 10, 4, 1071, 8, Apr. 2015, [Peer-reviewed], [Corresponding author], [International Magazine]
English, Scientific journal - Chemoselective boron-catalyzed nucleophilic activation of carboxylic acids for mannich-type reactions
Motomu Kanai; Yohei Shimizu; Yuya Morita; Tomohiro Yamamoto; Hideoki Nagai
Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME, 26, 16, A140, A143, American Society of Mechanical Engineers (ASME), 2015, [Peer-reviewed]
English, Scientific journal - Structure-based design and synthesis of a bivalent iminobiotin analog showing strong affinity toward a low immunogenic streptavidin mutant.
Tatsuya Kawato; Eiichi Mizohata; Yohei Shimizu; Tomohiro Meshizuka; Tomohiro Yamamoto; Noriaki Takasu; Masahiro Matsuoka; Hiroyoshi Matsumura; Tatsuhiko Kodama; Motomu Kanai; Hirofumi Doi; Tsuyoshi Inoue; Akira Sugiyama
Bioscience, biotechnology, and biochemistry, 79, 4, 640, 2, 2015, [Peer-reviewed], [International Magazine]
English, Scientific journal - Recent progress in copper-catalyzed difunctionalization of unactivated carbon-carbon multiple bonds
Yohei Shimizu; Motomu Kanai
TETRAHEDRON LETTERS, 55, 28, 3727, 3737, Jul. 2014, [Peer-reviewed], [Invited], [Corresponding author]
English, Scientific journal - Copper-Catalyzed Regio- and Stereoselective Intermolecular Three-Component Oxyarylation of Allenes
Taisuke Itoh; Yohei Shimizu; Motomu Kanai
ORGANIC LETTERS, 16, 10, 2736, 2739, May 2014, [Peer-reviewed], [Corresponding author]
English, Scientific journal - A CATALYTIC C-C BOND-FORMATION WITH MINIMAL USE OF PROTECTING GROUPS: CONSTRUCTION OF FUNCTIONALIZED ISOTETRONIC ACID DERIVATIVES
Yohei Shimizu; Kouji Yasuda; Motomu Kanai
HETEROCYCLES, 88, 2, 919, 927, Jan. 2014, [Peer-reviewed], [Lead author, Corresponding author]
English, Scientific journal - Catalytic enantioselective synthesis of 2-(2-hydroxyethyl)indole scaffolds via consecutive intramolecular amido-cupration of allenes and asymmetric addition of carbonyl compounds
Prasanna Kumara Chikkade; Yohei Shimizu; Motomu Kanai
CHEMICAL SCIENCE, 5, 4, 1585, 1590, 2014, [Peer-reviewed]
English, Scientific journal - Catalytic Anomeric Aminoalkynylation of Unprotected Aldoses
Yasuaki Kimura; Soichi Ito; Yohei Shimizu; Motomu Kanai
ORGANIC LETTERS, 15, 16, 4130, 4133, Aug. 2013, [Peer-reviewed]
English, Scientific journal - In situ Catalytic Generation of Allylcopper Species for Asymmetric Allylation: Toward 1H-Isochromene Skeletons
Junya Kawai; Prasanna Kumara Chikkade; Yohei Shimizu; Motomu Kanai
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 52, 28, 7177, 7180, Jul. 2013, [Peer-reviewed], [Corresponding author]
English, Scientific journal - From Chiral Base Catalysts to Redox-Active Catalysts: Chasing the Identity of Metal Catalysts in Carbon-Carbon Bond-Forming Reactions
Motomu Kanai; Shigeki Matsunaga; Kounosuke Oisaki; Yohei Shimizu
JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN, 71, 5, 433, 442, May 2013, [Peer-reviewed]
Japanese, Scientific journal - Copper(I)-Catalyzed Enantioselective Incorporation of Ketones to Cyclic Hemiaminals for the Synthesis of Versatile Alkaloid Precursors
Shi-Liang Shi; Xiao-Feng Wei; Yohei Shimizu; Motomu Kanai
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 134, 41, 17019, 17022, Oct. 2012, [Peer-reviewed]
English, Scientific journal - Cu(I)-catalyzed alpha-alkylation of ketones with styrene derivatives
Shohei Majima; Yohei Shimizu; Motomu Kanai
TETRAHEDRON LETTERS, 53, 33, 4381, 4384, Aug. 2012, [Peer-reviewed], [Corresponding author]
English, Scientific journal - The first catalytic asymmetric total synthesis of ent-hyperforin
Yohei Shimizu; Shi-Liang Shi; Hiroyuki Usuda; Motomu Kanai; Masakatsu Shibasaki
TETRAHEDRON, 66, 33, 6569, 6584, Aug. 2010, [Peer-reviewed], [Lead author]
English, Scientific journal - Catalytic Asymmetric Synthesis of R207910
Yutaka Saga; Rie Motoki; Sae Makino; Yohei Shimizu; Motomu Kanai; Masakatsu Shibasaki
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132, 23, 7905, +, Jun. 2010, [Peer-reviewed]
English, Scientific journal - Catalytic Asymmetric Total Synthesis of ent-Hyperforin
Yohei Shimizu; Shi-Liang Shi; Hiroyuki Usuda; Motomu Kanai; Masakatsu Shibasaki
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 49, 6, 1103, 1106, 2010, [Peer-reviewed], [Lead author]
English, Scientific journal - Asymmetric Reductive Mannich Reaction to Ketimines Catalyzed by a Cu(I) Complex
Yao Du; Li-Wen Xu; Yohei Shimizu; Kounosuke Oisaki; Motomu Kanai; Masakatsu Shibasaki
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 130, 48, 16146, +, Dec. 2008, [Peer-reviewed]
English, Scientific journal - A new approach for the construction of a highly congested bicyclic system in polycyclic polyprenylated acylphloroglucinols (PPAPs)
Yohei Shimizu; Akiyoshi Kuramochi; Hiroyuki Usuda; Motomu Kanai; Masakatsu Shibasaki
TETRAHEDRON LETTERS, 48, 24, 4173, 4177, Jun. 2007, [Peer-reviewed], [Lead author]
English, Scientific journal - P-270 TOTAL SYNTHESIS OF (±)-GARSUBELLIN A
Kuramochi Akiyoshi; Shimizu Yohei; Usuda Hiroyuki; Yamatsugu Kenzo; Kanai Motomu; Shibasaki Masakatsu
International Symposium on the Chemistry of Natural Products, 2006, "P, 270", Symposium on the chemistry of natural products, 23 Jul. 2006
English
- 低免疫原性を持つストレプトアビジンとRI標識イミノビオチンを用いたプレターゲティング法の開発
杉山暁; 杉山暁; 山次健三; 巽俊文; 鷲山幸信; 金井求; 児玉龍彦; 清水洋平; 溝端栄一; 井上豪, 核医学(Web), 57, Supplement, 2020 - 進行がん治療を指向した低免疫原性ストレプトアビジン変異体と211At標識イミノビオチンを用いるプレターゲティングシステムの開発
巽俊文; 山次健三; 清水洋平; 杉山暁; 趙松吉; 粟生木美穂; 西嶋剣一; 右近直之; 高橋和弘; 児玉龍彦; 鷲山幸信; 金井求, 反応と合成の進歩シンポジウム講演要旨集, 2020 - Rapid Synthesis of Sialic Acid Derivatives via Ligand-Controlled, Stereodivergent Propargylation of Unprotected Aldoses
Wei Xiaofeng; Shimizu Yohei; Kanai Motomu, Symposium on the Chemistry of Natural Products, symposium papers, 57, 0, 2015
<p>Sialic acids represent one of the most important constituents of glycoconjugates in biological system. Thus, rapid and scalable supply and broadening the structural diversity of sialic acids are an urgent demand in the current glycochemistry and glycobiology. Despite significant improvement on synthetic efficiency during past decades, there are still several points to be overcome: limited scope, unsatisfactory yield and scalability. Moreover, the flexibility in structural and stereochemical alternation are limited.</p><p>To realize efficient and scalable synthesis of wide variety of natural and unnatural sialic acid derivatives, we developed a copper-catalyzed propargylation of unprotected aldoses. The reaction proceeded in high yield and high diastereoselectivity even in a gram-scale. In addition, the diastereoselectivity of the reaction could be switched by changing the ligand's stereochemistry. Variety of aldoses were applicable (13 examples) including a disaccharide, b-D-lactose. The products could be converted to the corresponding sialic acids through a simple three-step sequence.</p>, Symposium on the Chemistry of Natural Products Steering Committee, Japanese - Synthetic study of hyperforin
Shimizu Yohei; Shi Shiliang; Usuda Hiroyuki; Kanai Motoumu; Shibasaki Masakatsu, Proceedings of the Symposium on Progress in Organic Reactions and Syntheses, 35, 0, 83, 83, 2009
Hyperforin was isolated from western herb, St. John's wort (<I>Hypericum perforatum</I>). Hyperforin exhibits various biologic activities including mild anti-depressant activity, anti-malarial activity, inhibitory activity of human histone deacetylase, and CYP3A4 induction activity. And this compound has characteristic structure; highly substituted bicyclo[3.3.1]nonanone core, 4 asymmetric carbon center.<BR> To synthesize attractive natural compound, hyperforin, our group developed the catalytic asymmetric Diels-Alder reaction. This key reaction gave substituted cyclohexene which has 2 contiguous asymmetric centers in high yield and selectivity (93% yield, 96% ee, exo: endo = >33: 1).<BR> From this key intermediate, we already synthesized bicyclo core via Claisen rearrangement, intramolecular aldol cyclization as key intermediate.<BR> And model study revealed that additional oxidation was possible using vinylogous Pummerer rearrangement., Division of Organic Chemistry, The Pharmaceutical Society of Japan, Japanese
- Boron Catalysis for Transformation of Carboxylic Acids and Their Derivatives
Yohei Shimizu
Universite de Strasbourg Invited Lecture, 24 Sep. 2025
[Invited] - Enabling Direct Functionalization of Carboxylic Acids by Boron Catalysis
Yohei Shimizu
LHFA Invited Lecture, 18 Sep. 2025
[Invited] - Catalytic Asymmetric Reactions Empowered by Multiple Non-covalent Interactions between Ligands and Substrates
Yohei Shimizu
LCC Invited Lecture, 05 Sep. 2025, English
[Invited] - Visible Light Driven Boron Catalysis for Direct Transformation of Carboxylic Acids and Their Analogues
Yohei Shimizu
The 4th Japanese-Sino-Symposium on Catalysis for Precision Synthesis, 07 Jul. 2025, English
07 Jul. 2025 - 08 Jul. 2025, [Invited] - ホウ素触媒が拓く可視光駆動型反応
清水洋平
グリーン触媒科学第2回公開シンポジウム, 13 Dec. 2024, Invited oral presentation
13 Dec. 2024 - 14 Dec. 2024, [Invited] - Enabling Direct Functionalization of Carboxylic Acids by Boron Catalysis
Yohei Shimizu
The 2nd List Platform Symposium, 29 Aug. 2024
[Invited] - Visible Light-Driven Boron-Catalyzed Direct Functionalization of Carboxylic Acids
Yohei Shimizu
ICAT International Symposium on Catalysis 2024: Sustainable synthesis by use of efficient catalyst, 29 Jul. 2024
[Invited] - α-Functionalization of Carboxylic Acids Driven by Boron Catalyst and Visible Light
Yohei Shimizu
7th International Conference on Catalysis and Chemical Engineering, 24 Feb. 2023, English, Invited oral presentation
[Invited] - 保護基フリー合成を指向した化学選択的触媒反応の開発
清水洋平
2022年度日本化学会北海道支部奨励賞 受賞講演会, 20 Feb. 2023, Japanese, Public discourse
[Invited] - Development of Chemoselective Reactions Using Boron Catalyst and Photoirradiation
Yohei Shimizu
Hybrid Catalysis若手道場 online, 19 Mar. 2022, Japanese, Nominated symposium
[Invited] - Development of Chemoselective Reactions Using Copper and Boron as Key Catalysts
Yohei Shimizu
LHFA virtual lecture, Université Toulouse III, 21 Oct. 2021, English, Public discourse
[Invited] - Chemoselective α-Functionalization of Carboxylic Acids
Yohei Shimizu
2020 Dalian University of Technology-Overseas Partner Universities Series Online Exchange Conference, 07 Jan. 2021, Invited oral presentation
06 Jan. 2021 - 09 Jan. 2021, [Invited] - Carboxylic acid-selective α-functionalization enabled by boron activator
Yohei Shimizu
The 11th CSE Autumn School & The 8th ALP International Symposium, 04 Nov. 2020, Invited oral presentation
04 Nov. 2020 - 05 Nov. 2020, [Invited] - Boron-Catalyzed α-Functionalization of Carboxylic Acids
Yohei Shimizu
Hokkaido mini-Symposium by Young Generations in Asia, 15 Nov. 2019, English
[Invited] - Carboxylic Acid-Selective Enolate Formation
Yohei SHIMIZU
Hokkaido Summer Symposium 2019 on Catalysis for Organic Synthesis, 02 Jul. 2019, English, Invited oral presentation
Hokkaido University, [Invited], [International presentation] - 触媒の特性を活かした化学選択的反応の開発
Yohei SHIMIZU
日本薬学会第139年会 奨励賞受賞講演, 21 Mar. 2019, Japanese, Invited oral presentation
Chiba, 受賞講演, [Invited], [Domestic Conference] - 触媒の特性を活かした化学選択的反応の開発
Yohei SHIMIZU
若手研究者のための有機化学札幌セミナー, 08 Nov. 2018, Japanese
Hokkaido University, [Invited], [Domestic Conference] - 一価銅触媒の特性を活かした化学選択的反応の開発
Yohei SHIMIZU
日本化学会 第98春季年会 若い世代の特別講演会, 21 Mar. 2018, Japanese
日本大学船橋キャンパス, [Invited] - 一価銅触媒の特性を活かした化学選択的反応の開発
Yohei SHIMIZU
第二回有機若手ワークショップ, 29 Nov. 2017, Japanese
Kyoto University, [Invited] - 触媒の特性を活かした化学選択的反応の開発
清水洋平
第12回神戸大学有機反応化学研究会, 28 Nov. 2017, Japanese
[Invited] - 触媒の特性を活かした化学選択的反応の開発
Yohei SHIMIZU
平成29年度若手研究者のためのセミナー, 08 Jul. 2017, Japanese
The University of Tokyo, [Invited] - Chemoselective C-C Bond Forming Reactions
Yohei Shimizu
University of California Santa Barbara, 30 Jun. 2017, English - Chemoselective C-C Bond Forming Reactions
Yohei SHIMIZU
Chalmers University of Technology, 06 Apr. 2017, English, Nominated symposium
Chalmers University of Technology - ホウ素触媒によるカルボン酸の化学選択的求核的活性化法の開発
Yohei SHIMIZU
日本薬学会第137年会 有機合成化学の若い力, 25 Mar. 2017, Japanese
Tohoku University, [Invited] - 触媒の特性を活かした化学選択的反応の開発
Yohei SHIMIZU
第40回 星薬科大学大学院研究科助手会・大学院自治会 合同公開セミナー, 05 Nov. 2016, Japanese
星薬科大学, [Invited] - 保護基フリー合成を目指した化学選択的反応の開発
Yohei SHIMIZU
有機触媒若手セミナー, 04 Oct. 2015, Japanese
Nagoya, [Invited] - Copper-Catalyzed C-C Bond Forming Reactions Utilizing Its “Soft” Characteristics
Yohei SHIMIZU
University of Alberta, 14 Jul. 2014, English
University of Alberta - ent-Hyperforinの触媒的不斉全合成
Yohei SHIMIZU
若手研究者のためのセミナー(2010), 25 Sep. 2010, Japanese
Chiba University, [Invited]
- 分子化学A(有機金属化学), 2024年, 修士課程, 総合化学院
- 総合化学特論Ⅱ(Modern Trends in Organic Chemistry and Biological Chemistry), 2024年, 修士課程, 総合化学院
- 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
- 総合化学特論II (Modern Trends in Organic Chemistry and Biological Chemistry), 2024年, 修士課程, 工学院
- 先端総合化学特論Ⅰ, 2024年, 博士後期課程, 総合化学院
- 総合化学特論II (Modern Trends in Organic Chemistry and Biological Chemistry), 2024年, 博士後期課程, 工学院
- 有機金属化学, 2024年, 学士課程, 理学部
- 教科教育法(理科Ⅰ), 2024年, 学士課程, 教育学部
- May 2023 - Present
触媒学会 - Present
THE SOCIETY OF SYNTHETIC ORGANIC CHEMISTRY, JAPAN - Present
THE PHARMACEUTICAL SOCIETY OF JAPAN - Present
THE CHEMICAL SOCIETY OF JAPAN
- バイオマスを用いた分解性NOペプトイドの創製
戦略的な研究開発の推進 戦略的創造研究推進事業 さきがけ
2024 - 2027
清水 洋平
ポリマーは現代社会に必要不可欠な材料ですが、その多くは難分解性であり、環境問題の要因の一つとなっています。本研究は、バイオマスの一つであるカルボン酸を原料として、新たな分解性ポリマー「NOペプトイド」を創製し、その機能開拓を目指します。さらに、NOペプトイドの構造的な特徴に基づいた分解法を確立し、資源循環を可能にする新たな材料としてこれを利用するための基盤技術を開発します。
科学技術振興機構, 北海道大学, Principal investigator - Exploration of radical-controlling green catalysts for remote functionalization of carboxylic acids
Grants-in-Aid for Scientific Research
01 Apr. 2024 - 31 Mar. 2026
清水 洋平
Japan Society for the Promotion of Science, Grant-in-Aid for Transformative Research Areas (A), Hokkaido University, 24H01828 - ホスフィン触媒によるアルキルピリジン類の直截的変換法の開発
研究助成(奨励)
Jul. 2024 - Mar. 2025
秋山記念生命科学振興財団, Principal investigator, Competitive research funding - バイオマスカルボン酸の高付加価値化を指向した触媒的変換反応の開発
研究助成
Apr. 2024 - Mar. 2025
高橋産業経済研究財団, Principal investigator, Competitive research funding - バイオマス資源の高度利用を指向した可視光駆動型カルボン酸修飾法の開発
第41回研究助成 課題A「植物有用成分およびバイオマス資源の高度利用」
Apr. 2024 - Mar. 2025
松籟科学技術振興財団, Principal investigator, Competitive research funding - Precise Organic Synthesis by Developing Novel Radical Control Methods
Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)
30 Jun. 2022 - 31 Mar. 2024
清水 洋平
塩素ラジカルとホスフィン触媒の相互作用を活用したC-Hアミノ化反応について検討を行った。可視光領域に吸収帯を持つ塩化セリウム触媒を用いることで触媒的に塩素ラジカルを生成する反応条件を採用し、ホスフィン触媒およびアミノ化剤の探索を行った。その結果、アゾジカルボン酸エステルをアミノ化剤として用いた際にC-Hアミノ化が進行し、ホスフィン触媒の構造や電子的効果によってC-Hアミノ化の位置選択性が変化することが明らかとなった。とりわけビアリール骨格を有するホスフィン触媒が良好な結果を示しており、ホスフィン触媒の立体的な影響があるのではないかと考えられる。また、溶媒効果も顕著であり、ハロゲン系溶媒が効果的である。これらの結果は、高反応性の塩素ラジカルをホスフィン触媒の作用によって制御したものだと考えられる。
また、上記のC-Hアミノ化反応を検討する中で、塩素ラジカルを必要としない新たなC-Hアミノ化反応を見出した。ホスフィンを触媒として、塩基性条件下、アミノ化剤と基質を0℃~室温条件で撹拌することによって位置選択的に反応が進行する。いくつかのホスフィン触媒を検討したところ、本反応においてもその構造や電子的効果が反応の効率に大きく影響することがわかった。現段階では、再現性に問題が残っているものの、テトラヒドロキノリンを基質としたモデル反応で、最高90%収率程度で目的物が得られる。また、この触媒条件をいくつかの基質に適用したところ、ピリジン部位を持つ基質で特異的に反応が進行した。
Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Research (Exploratory), Hokkaido University, 22K19016 - Expansion of Chemoselective Functionalization of Carboxylic Acids by Parallel Optimization
Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)
16 Jun. 2022 - 31 Mar. 2024
清水 洋平
独自の技術である、ホウ素触媒を用いたカルボン酸のエノラート生成法に光励起を組み合わせることでβ位アリル化反応の開発を検討した。2021年に論文発表したカルボン酸α位アリル化の副生成物としてわずかに得られていたβ位アリル化体の生成比率向上を目指し、ホウ素触媒の配位子、塩基、およびアリル化剤の構造を行った。塩基、アリル化剤は従来と同じ化合物が適切であった一方で、配位子はBINOL型配位子を単体で用いるよりもBINOL型配位子とアミノ酸型配位子を組み合わせた条件で収率が向上することが分かった。カルボン酸エノラートの生成に二つのホウ素触媒が関与しているという想定反応機構に照らして考えると、カルボン酸エノラートの生成と光励起およびC-C結合形成段階に二種類の配位子が協奏的に関与していることを示唆するものであると考えられる。そこで、最適配位子を探索するために、まずBINOL型配位子のデータベースの構築に取り組んだ。合成済み配位子34個と多数の配位子候補についてDFT計算を実施し、それぞれの配位子の様々なパラメータを求め、機械学習における記述子として利用できるように整理した。一方で、実際に合成したBINOL型配位子34個を用いて、β位アリル化反応を実施し、収率を求めた。この実験的データとDFT計算によって得られた様々な記述子を用いてモデル構築を検討した。現在までに配位子構造から収率を予測する精度は低いため、いくつかの配位子候補を合成して実験データを拡充して収率予測モデルの精度を向上させる予定である。
Japan Society for the Promotion of Science, Grant-in-Aid for Transformative Research Areas (A), Hokkaido University, 22H05329 - Functionalization of carboxylic acids via radical generation
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
01 Apr. 2020 - 31 Mar. 2023
Shimizu Yohei
A novel direct α-functionalization of carboxylic acids was developed by utilizing boron catalysts and visible light energy. One-electron transfer with a reactant proceeds from a photoexcited boron enolate in the reaction system, and a bond formation reaction at the α-position of the carboxylic acid proceeds via a radical intermediate. The α-allylation reaction, which is a carbon chain introduction reaction, and the α-amination reaction, which is a heteroatom introduction reaction, were developed, and the versatility of this method was demonstrated.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 20H02729 - Development of chemoselective domino-type reactions by boron-photoredox hybrid catalysis
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
01 Apr. 2020 - 31 Mar. 2022
清水 洋平
これまで独自に発展させてきたホウ素触媒によるカルボン酸のエノラート生成法を基盤として、光照射によるエノラートの励起を組み込むことで触媒的ラジカル反応の開発に成功した。
カルボン酸を基質とした触媒的ラジカル反応は、副反応として脱炭酸が容易に進行してしまうために開発が進んでこなかった分野である。本研究では、ホウ素エノラートが光励起されることによってはじめて1電子移動が起こるという機構でラジカル反応が開始されるため、脱炭酸が起こらず、カルボン酸α位での修飾反応が進行する。ホウ素上の配位子構造が反応の進行に大きな影響を与えていることがわかったため、さまざまな構造の配位子を合成し、検討を行った。その結果、広いπ共役系を有する配位子を用いるほど高効率に反応が進行することが明らかとなった。最適配位子をもとに基質一般性の検討を行ったところ、様々なαアリールカルボン酸に適用可能であった。また、エステルやケトン存在下にもカルボン酸α位のみで反応が進行する化学選択性を有することも確認できた。
上記の光駆動型反応に加えて、オレフィンとカルボン酸から一挙にラクトンを形成する、新たな反応の初期的知見を得ることができた。ホウ素触媒存在下、適切な活性化剤を添加するとカルボン酸α位での炭素-炭素結合形成とカルボン酸酸素原子とオレフィンとの酸素-炭素結合が一挙に形成される。現在のところ反応機構は不明であるが、ホウ素触媒非存在下ではラクトン形成は進行しないことがわかっている。
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area), Hokkaido University, 20H04797 - 高反応性ラジカルの制御が拓くC(sp3)-H結合変換反応
研究奨励
Jan. 2021 - Mar. 2022
上原記念生命科学財団, Principal investigator, Competitive research funding - 光学活性フッ素化アミノ酸の迅速合成法の開発
豊田理研スカラー
Apr. 2020 - Mar. 2021
豊田理研, Principal investigator, Competitive research funding - Development of a catalytic method for radical generation at alpha-position of carboxylic acid
Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists
01 Apr. 2018 - 31 Mar. 2020
Shimizu Yohei
In this research project, we were able to achieve the following two results: (1) discovery of boron-catalyzed α-allylation of carboxylic acids in combination with visible light irradiation, and (2) development of boron-catalyzed α-amination of carboxylic acids. In the first achievement, we were able to discover a new reactivity of boron catalysis, and it will be the basis for expanding the application to more diverse reaction systems. In the second achievement, we established a method for synthesizing sterically hindered α-amino acids , which is difficult to synthesize by other methods. This method would accelerate the application of unnatural amino acids to various field by supplying order-made amino acids.
Japan Society for the Promotion of Science, Grant-in-Aid for Early-Career Scientists, Hokkaido University, Principal investigator, Competitive research funding, 18K14207 - ペプチド医薬を志向した新規触媒反応の開発
研究助成
Apr. 2019 - Mar. 2020
医用薬物研究奨励富岳基金, Principal investigator, Competitive research funding - ペプチド医薬を志向した非天然アミノ酸の迅速合成法の開発
研究助成
Apr. 2019 - Mar. 2020
国際科学技術財団, Principal investigator, Competitive research funding - Development of carbon-carbon bond forming reactions for protecting group free synthesis.
Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
01 Apr. 2015 - 31 Mar. 2019
Shimizu Yohei
We developed copper-catalyzed stereodivergent propargylation of unprotected aldoses. The C-C bond forming reaction proceeds preferentially over protonolysis of organocopper species even in the presence of multiple free hydroxy groups. Moreover, the diastereoselectivity of the product can be switched depending on the chirality of the copper catalyst. The product could be transformed to sialic acid derivatives in only three steps.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Principal investigator, Competitive research funding, 15K07851 - 化学選択的カルボン酸α位修飾反応の開発
研究助成金
Dec. 2016 - Nov. 2017
清水洋平
アステラス病態代謝研究会, Principal investigator, Competitive research funding - Development of novel allylmetal generation method and its application
Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)
01 Apr. 2013 - 31 Mar. 2015
SHIMIZU Yohei
We developed a novel method to generate allylcopper species from an allenylanilide, which possesses both an allene moiety and an aniline moiety in one molecule. Cu(I) catalyst facilitates a generation of allylcopper species along with formation of indole structure. The generated allylcopper species can work as nucleophile to various carbonyl compounds including ketones.
The reaction proceeded in enantioselective manner by utilizing a chiral diphosphine ligand. Thus the reaction produced chiral 2-(2-hydroxyethyl)indoles efficiently, whose scaffold is difficult to construct by other means.
The developed method is unique in simultaneous construction of indole structure and elongation of carbon scaffold.
Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), The University of Tokyo, Principal investigator, Competitive research funding, 25860004 - 新規触媒開発によるカルボン酸の選択的活性化
科学研究費補助金 研究活動スタート支援
2011 - Mar. 2013
清水洋平
日本学術振興会, Principal investigator, Competitive research funding - Selective activation of carboxylic acids by developing novel catalysts
Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity start-up
2011 - 2012
SHIMIZU Yohei
We found that aldol reaction using carboxylic acids as substrates could be proceeded under mild condition by activating with an equivalent of borane. In addition, the usage of dummy ligands could tune the reactivity and selectivity.
Japan Society for the Promotion of Science, Grant-in-Aid for Research Activity start-up, The University of Tokyo, 23890034 - 新規触媒的不斉Diels-Alder型反応の開発および複雑縮環天然物の全合成
Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows
2008 - 2010
清水 洋平
天然に豊富に存在するグルコースやマンノースといった糖を求電子剤としピルビン酸誘導体を求核剤とした反応の開発を行った。求電子剤となる糖は酸性プロトンを有するヒドロキシル基が多数存在するため通常は保護を行う必要があるが、このような保護基の脱着なしに求核剤が糖を攻撃できる反応を開発できれば、糖を求電子剤とした系に限らず多くの天然物をより効率的に合成できる。それは複雑な縮環系に多くの官能基を有する化合物にも応用できると期待される。目的とする反応を達成するために、まずピルビン酸誘導体を求核剤として選択した。本基質は比較的高い酸性度を有していることから容易に求核的性質を有するエノール型をとると考えられ、さらに糖への付加が進行して得られる化合物はシアル酸であるため、生成物のさらなる修飾により様々な生物活性を有する化合物へと変換できると期待される。糖を求電子剤として様々な金属源を検討したが、その水溶性の高さゆえに取り扱い、分析が困難であったため、初期検討としてラクトールをモデル基質として再び触媒系を検討した。ラクトールはフリーのヒドロキシル基を有しており、また反応点となるアルデヒドがヘミアセタールとして保護された形も糖と類似しているため良いモデル基質となると考えた。ラクトールを用いた検討の結果Fe(III)を用いることで望みとする反応が良好に進行することが明らかとなった。中でもFe(CF_3CO_2)_3が最も良い結果を与えた。マンノースを求電子剤として用いた場合には反応は進行しなかったため、さらなる触媒系の検討を行っている。
Japan Society for the Promotion of Science, Grant-in-Aid for JSPS Fellows, The University of Tokyo, 08J10868
- ハロゲン化したビオチン改変二量体およびその利用
Patent right, 金井 求; 清水 洋平; 山次 健三; 巽 俊文; 児玉 龍彦; 杉山 暁; 塚越 雅信, 国立大学法人 東京大学, サヴィッド・セラピューティックス株式会社
JP2019021586, 30 May 2019
WO2019-230905, 05 Dec. 2019
202103013721536748 - ビスイミノビオチン化合物の薬物送達用の用途
Patent right, 鈴木 常司; 真野 昴裕; 戸谷 由之; 清水 洋平; 杉山 暁; 塚越 雅信, 三井化学株式会社, 国立大学法人 東京大学, サヴィッド・セラピューティックス株式会社
JP2019014284, 29 Mar. 2019
WO2019-189867, 03 Oct. 2019
202103009293286955 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 山本 倫広, サヴィッド・セラピューティックス株式会社
特願2013-031038, 20 Feb. 2013
特開2016-027006, 18 Feb. 2016
特許第6178586号
21 Jul. 2017
201703014639406767 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 高須 典明; 高津 まり, サヴィッド・セラピューティックス株式会社
特願2016-249039, 22 Dec. 2016
特開2017-066155, 06 Apr. 2017
特許第6723913号
201703002929658893 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 高須 典明; 高津 まり, サヴィッド・セラピューティックス株式会社
特願2016-249039, 22 Dec. 2016
特開2017-066155, 06 Apr. 2017
201703002929658893 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 高須 典明; 高津 まり, サヴィッド・セラピューティックス株式会社
特願2016-504132, 18 Feb. 2015
特許第6096371号
24 Feb. 2017
201703018786204245 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 山本 倫広, 分子動力学抗体創薬技術研究組合
特願2013-031038, 20 Feb. 2013
特開2016-027006, 18 Feb. 2016
201603017417384201 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 高須 典明; 高津 まり, サヴィッド・セラピューティックス株式会社
JP2015054431, 18 Feb. 2015
WO2015-125820, 27 Aug. 2015
201703002763894909 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 高須 典明; 高津 まり, サヴィッド・セラピューティックス株式会社
JP2015054431, 18 Feb. 2015
WO2015-125820, 27 Aug. 2015
201703002763894909 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 山本 倫広, サヴィッド・セラピューティックス株式会社
JP2014053734, 18 Feb. 2014
WO2014-129446, 28 Aug. 2014
201703014601588063 - ビオチン改変体、ストレプトアビジン変異体およびそれらの利用
Patent right, 杉山 暁; 土居 洋文; 児玉 龍彦; 井上 豪; 溝端 栄一; 川戸 達矢; 飯塚 友洋; 金井 求; 清水 洋平; 山本 倫広, サヴィッド・セラピューティックス株式会社
JP2014053734, 18 Feb. 2014
WO2014-129446, 28 Aug. 2014
201703014601588063
