Details of the Researcher

PHOTO

Shota Nagasawa
Section
Graduate School of Pharmaceutical Sciences
Job title
Assistant Professor
Degree
  • Ph.D (Pharm. Sci.) (Tohoku University)

Research History 4

  • 2019/04 - Present
    Tohoku University Graduate School of Pharmaceutical Sciences

  • 2017/06 - 2019/03
    University of California, Berkeley

  • 2017/04 - 2017/05
    Tohoku University Graduate School of Pharmaceutical Sciences

  • 2014/04 - 2017/03
    日本学術振興会 特別研究員(DC1)

Education 1

  • Tohoku University Graduate School of Pharmaceutical Sciences Division of Molecular Pharmaceutical Chemistry

    2012/04 - 2017/03

Professional Memberships 3

  • THE JAPANESE SOCIETY FOR PROCESS CHEMISTRY

  • THE SOCIETY OF SYNTHETIC ORGANIC CHEMISTRY, JAPAN

  • THE PHARMACEUTICAL SOCIETY OF JAPAN

Research Interests 1

  • 有機合成化学

Research Areas 1

  • Life sciences / Pharmaceuticals - chemistry and drug development /

Awards 4

  1. 令和7年度 東北大学大学院薬学研究科 研究科長賞(若手Top論文賞)

    2025

  2. The 18th International Conference on Cutting-Edge Organic Chemistry in Asia (ICCEOCA-18), Asian Core Program (ACP) Lectureship Award (from Thailand)

    2025

  3. 令和2年度(第33回) 有機合成化学協会 帝人ファーマ 研究企画賞

    2020

  4. 大津会議アワードフェロー

    2015

Papers 37

  1. A Sequential Iodination–Fluorodeiodination of the Cubane Scaffold

    Quentin Fevre-Renault, Masaki Hosaka, Sébastien Depienne, Robin Heinrich, Matthieu Hedouin, Hassan Oulyadi, Catherine Fressigné, Shota Nagasawa, Yoshiharu Iwabuchi, Alison M. Stuart, Bruno Linclau, Michaël De Paolis

    Organic Letters 2026/04/17

    DOI: 10.1021/acs.orglett.6c00557  

  2. Alkyne Two-Phase Strategy: Rapid Generation of TK-285-Derived PROTACs as BRD4 Degraders

    Hiroyuki Yamakoshi, Ryo Watanabe, Ryosuke Segawa, Ryosuke Ishihara, Ryo Tachibana, Genki Kudo, Shota Nagasawa, Satoshi Yamanaka, Ayano Ito, Hiroyuki Takeda, Tatsuya Sawasaki, Ryunosuke Yoshino, Takatsugu Hirokawa, Takayuki Doi, Noriyasu Hirasawa, Yoshiharu Iwabuchi

    Journal of Medicinal Chemistry 2026/04/09

    DOI: 10.1021/acs.jmedchem.5c03771  

  3. Asymmetric Aerobic Intramolecular Dearomative <i>ortho</i> Coupling of Tethered Phenols by Chromium-Salen Complex/Nitroxyl Radical Catalysis

    Shota Nagasawa, Nao Yokota, Shogo Fujiki, Yusuke Sasano, Yoshiharu Iwabuchi

    Chemical and Pharmaceutical Bulletin 2026/01/30

    DOI: 10.1248/cpb.c25-00762  

    ISSN: 0009-2363 1347-5223

  4. Expanding Terpenoid Chemical Space Through Radical-Mediated Remodeling of the 4-nor-(3Z,7E)-Neodolabellane Framework

    Yuki Tateishi, Shota Nagasawa, Atsushi Tahara, Yoshiharu Iwabuchi

    CHEMISTRY-AN ASIAN JOURNAL 2025/10/29

    DOI: 10.1002/asia.70406  

    ISSN: 1861-4728

    eISSN: 1861-471X

  5. Silver-Catalyzed Asymmetric Synthesis of 1,3-Substituted Cuneanes: An Application to a Chiral Isostere of meta-Substituted Benzenes

    Kan Fujiwara, Shota Nagasawa, Atsushi Tahara, Yoshiharu Iwabuchi

    2025/10/23

    DOI: 10.26434/chemrxiv-2025-f0080  

  6. Amide-Directed C-H Acetoxylation of Cubanes

    Shota Nagasawa, Yoshiharu Iwabuchi

    CHEMICAL & PHARMACEUTICAL BULLETIN 73 (9) 783-786 2025/09

    DOI: 10.1248/cpb.c25-00449  

    ISSN: 0009-2363

  7. Quantitative Structure–Reactivity Relationship-Guided Mechanistic Study Enables the Optimization of Nitroxyl Radical-Catalyzed Alcohol Oxidation

    Yusuke Sasano, Hideya Tanaka, Shuhei Akutsu, Riki Yamakawa, Shu Saito, Keita Kido, Tsubasa Suzuki, Yuki Tateishi, Shota Nagasawa, Yoshiharu Iwabuchi, Tomoyuki Miyao

    2025/05/15

    Publisher: American Chemical Society (ACS)

    DOI: 10.26434/chemrxiv-2025-nlj60  

    More details Close

    Alcohol oxidation is a fundamental transformation in organic chemistry, playing a central role in the synthesis of valuable intermediates and products. Herein, the mechanism of alcohol oxidation using a nitroxyl radical catalyst and a hypervalent iodine reagent was investigated through kinetic isotope effect experiments and data-driven quantitative structure–reactivity relationship analyses to identify the rate-determining step and guide reaction optimization. Among the molecular representations evaluated, the percent buried volume: %Vbur at 2.5 Å centered on the α-carbon of the alcohol showed the strongest correlation with the initial reaction rate across a diverse substrate set, revealing a key structural factor governing the reaction rate of alcohols. These mechanistic insights, which suggested that the addition of the alcohol to the catalyst is likely the rate-determining step, motivated the investigation of potential additives. The addition of water was found to accelerate the reaction, leading to a more efficient catalytic system. This study offers mechanistic insights and predictive tools to guide the design of more efficient nitroxyl radical-catalyzed alcohol oxidations.

  8. Photocatalytic Tandem Ueno-Stork Cyclization/Intermolecular Giese Addition Sequence for Stereoselective Difunctionalization of Allylic Alcohols

    Yuki Tateishi, Shota Nagasawa, Yoshiharu Iwabuchi

    ORGANIC LETTERS 27 (8) 1984-1988 2025/02/14

    DOI: 10.1021/acs.orglett.5c00287  

    ISSN: 1523-7060

    eISSN: 1523-7052

  9. Precise Synthetic Organic Chemistry of Cubanes and Cuneanes Aspiring to Medicinal Application

    Shota Nagasawa, Yoshiharu Iwabuchi

    JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN 83 (7) 615-626 2025

    DOI: 10.5059/yukigoseikyokaishi.83.615  

    ISSN: 0037-9980

  10. A unified approach to highly functionalized clovane-type terpenoids: enantiocontrolled total synthesis of rumphellclovane E and sarinfacetamides A and B

    Daigo Ninomiya, Shota Nagasawa, Yoshiharu Iwabuchi

    Chemical Science 16 (34) 15707-15713 2025

    Publisher: Royal Society of Chemistry (RSC)

    DOI: 10.1039/d5sc04197j  

    ISSN: 2041-6520

    eISSN: 2041-6539

    More details Close

    This study presents an enantioselective collective total synthesis of the highly functionalized clovane-type terpenoids rumphellclovane E (4) and sarinfacetamides A (5) and B (6).

  11. Strategy for C−H Functionalization of Cubanes: From Stoichiometric Reaction to Catalytic Methodology

    Masaki Hosaka, Shota Nagasawa, Yoshiharu Iwabuchi

    European Journal of Organic Chemistry 27 (46) 2024/11/09

    Publisher: Wiley

    DOI: 10.1002/ejoc.202401055  

    ISSN: 1434-193X

    eISSN: 1099-0690

    More details Close

    Abstract We summarized a strategy for C−H functionalization of cubanes, highlighting recent progress in the field. Cubane, known as a bioisostere of benzene ring, and its functionalization hold significant potential for future drug development. However, owing to its highly strained and thermodynamically unstable nature, the methodologies are limited and their precise and diverse functionalization is challenging in current organic chemistry. In this Concept, we categorized and explained these methodologies, which represents a majority of current cubane C−H functionalization. In addition, we discussed recent advancements in catalytic C−H functionalization methods, demonstrating their potential to address these challenges effectively.

  12. Recent Progress in Accessing Multi-functionalized Caged Hydrocarbons: En Route to Highly Functionalized Saturated (Bio)isosteres of Benzene Rings

    Shota Nagasawa, Yoshiharu Iwabuchi

    Synthesis 57 (06) 1153-1170 2024/07/04

    Publisher: Georg Thieme Verlag KG

    DOI: 10.1055/a-2360-8218  

    ISSN: 0039-7881

    eISSN: 1437-210X

    More details Close

    Abstract Recently, many saturated bioisosteres of the benzene ring have been developed, and their applications in drug development have been evaluated. Most of these bioisosteres are caged hydrocarbons, which have rigid skeletons and three-dimensional spaces. Recent efforts to synthesize these caged hydrocarbons have enabled access to multi-functionalized congeners that are expected to be (bio)isosteres of multi-functionalized benzenes. This short review summarizes recently reported methods for obtaining multi-functionalized (typically more than disubstituted) caged hydrocarbons. 1 Introduction 2 Proposed Structures of Caged Hydrocarbons as Saturated (Bio)isosteres of the Benzene Ring: A Brief Summary 3 Access to Multi-functionalized Caged Hydrocarbons: De Novo Synthetic Approaches 3.1 Bicyclo[1.1.1]pentanes (BCPs) 3.2 Bicyclo[2.1.1]hexanes (BCHs) 3.3 Bicyclo[3.1.1]heptanes (BCHeps) 3.4 Others 4 Access to Multi-functionalized Caged Hydrocarbons: C–H Functionalization 5 Conclusion

  13. Controlled Aerobic Oxidative Dimerization of Hydroxystilbenoids by Chromium Catalysis

    Shota Nagasawa, Yudai Itagaki, Yusuke Sasano, Yoshiharu Iwabuchi

    Organic Letters 26 (20) 4178-4182 2024/05/10

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/acs.orglett.4c00839  

    ISSN: 1523-7060

    eISSN: 1523-7052

  14. Biological Evaluation of Isosteric Applicability of 1,3-Substituted Cuneanes as m-Substituted Benzenes Enabled by Selective Isomerization of 1,4-Substituted Cubanes. International-journal

    Kan Fujiwara, Shota Nagasawa, Ryusei Maeyama, Ryosuke Segawa, Noriyasu Hirasawa, Takatsugu Hirokawa, Yoshiharu Iwabuchi

    Chemistry (Weinheim an der Bergstrasse, Germany) 30 (11) e202303548 2024/02/21

    DOI: 10.1002/chem.202303548  

    More details Close

    We herein evaluate a biological applicability of 1,3-substituted cuneanes as an isostere of m-substituted benzenes based on its structural similarity. An investigation of a method to obtain 1,3-substituted cuneanes by selective isomerization of 1,4-substituted cubanes enables this attempt by giving a key synthetic step to obtain a cuneane analogs of pharmaceuticals having m-substituted benzene moiety. Biological evaluation of the synthesized analogs and in silico study of the obtained result revealed a potential usage of cuneane skeleton in medicinal chemistry.

  15. Design, Synthesis, and Biological Evaluation of Water-Soluble Prodrugs of C5-Curcuminoid GO-Y030 Based on Reversible Thia-Michael Reaction

    Hiroyuki Yamakoshi, Michihiro Fukuda, Hiro Ikeda, Shogo Fujiki, Aki Kohyama, Shota Nagasawa, Hanae Shinozaki, Hiroyuki Shibata, Yoshiharu Iwabuchi

    Chemical and Pharmaceutical Bulletin 72 (1) 127-134 2024/01/30

    Publisher: Pharmaceutical Society of Japan

    DOI: 10.1248/cpb.c23-00775  

    ISSN: 0009-2363

    eISSN: 1347-5223

  16. C–H Alkylation of Cubanes via Catalytic Generation of Cubyl Radicals

    Masaki Hosaka, Shota Nagasawa, Yoshiharu Iwabuchi

    Organic Letters 26 (3) 658-663 2024/01/18

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/acs.orglett.3c04019  

    ISSN: 1523-7060

    eISSN: 1523-7052

  17. Asymmetric Total Synthesis of Cytotrienin A: Late-stage Installation of C11 Side Chain onto the Macrolactam Scaffold. International-journal

    Yuki Tateishi, Ryo Sato, Shingo Komatsu, Masatsugu Noguchi, Shota Nagasawa, Yusuke Sasano, Naoki Kanoh, Yoshiharu Iwabuchi

    Angewandte Chemie (International ed. in English) e202303140 2023/05/22

    DOI: 10.1002/anie.202303140  

    More details Close

    Cytotrienin A, an ansamycin-class antibiotic, exhibits potent apoptosis-inducing activity and has attracted much attention as a lead compound for anticancer drugs. Herein, we report a new asymmetric synthetic route to cytotrienin A, employing an unexplored approach involving the late-stage installation of a C11 side chain onto the macrolactam core. In this strategy, we utilized the redox properties of hydroquinone and installed a side chain on the sterically hindered C11 hydroxyl group via the traceless Staudinger reaction. This study also demonstrated that the boron-Wittig/iterative Suzuki-Miyaura cross-coupling sequence was effective for the concise and selective construction of the (E,E,E)-conjugated triene moiety. The developed route opens new opportunities for the structure-activity relationship studies of the side chains of these ansamycin antibiotics and the preparation of other synthetic analogs and chemical probes for further biological studies.

  18. Selective Synthesis of 1,3-Substituted Cuneanes: En Route to Potent Bioisosteres of m-Substituted Benzenes

    Shota Nagasawa, Kan Fujiwara, Ryusei Maeyama, Ryosuke Segawa, Noriyasu Hirasawa, Yoshiharu Iwabuchi

    2023/05/09

    DOI: 10.26434/chemrxiv-2023-fgxxm  

  19. 4‐Chloro‐2‐azaadamantane N‐Oxyl (4‐Cl‐AZADO): A Readily Preparable Organocatalyst for NOx Co‐catalyzed Aerobic Alcohol Oxidation

    Shota Nagasawa, Yusuke Sasano, Yoshiharu Iwabuchi

    Asian Journal of Organic Chemistry 12 (4) 2023/02/17

    Publisher: Wiley

    DOI: 10.1002/ajoc.202300031  

    ISSN: 2193-5807

    eISSN: 2193-5815

    More details Close

    Abstract Concise synthesis and structure‐activity relationships study of 4‐substituted 2‐azaadamantane N‐oxyls reveals that 4‐chloro‐2‐azaadamantane N‐oxyl (4‐Cl‐AZADO) is an efficient organocatalyst toward the aerobic oxidation of alcohols in the presence of NOx as a co‐catalyst. The organocatalyst was easily synthesized from 2‐adamantanone in five steps, and it showed high activity compared with many previously reported nitroxyl radical catalysts.

  20. Sequential click modification of a lithium-ion endohedral fullerene connecting small molecules through a dieneazide linker

    Shogo Fujiki, Takumi Takada, Shota Nagasawa, Hiroshi Okada, Yusuke Sasano, Eunsang Kwon, Yutaka Matsuo, Yoshiharu Iwabuchi

    CHEMICAL COMMUNICATIONS 59 (9) 1237-1240 2023/01

    DOI: 10.1039/d2cc06301h  

    ISSN: 1359-7345

    eISSN: 1364-548X

  21. Enantiocontrolled Access to an Intermediate for Highly Functionalized Clovane-Type Terpenoids: Formal Synthesis of Rumphellclovane E

    Daigo Ninomiya, Shota Nagasawa, Yoshiharu Iwabuchi

    ORGANIC LETTERS 24 (41) 7572-7576 2022/10

    DOI: 10.1021/acs.orglett.2c02960  

    ISSN: 1523-7060

    eISSN: 1523-7052

  22. Toward the Creation of Induced Pluripotent Small (iPS) Molecules: Establishment of a Modular Synthetic Strategy for the Heronamide C-type Polyene Macrolactams and Their Conformational and Reactivity Analysis Peer-reviewed

    Naoki Kanoh, Yuta Terajima, Suguru Tanaka, Ryusei Terashima, Hiromichi Nishiyama, Shota Nagasawa, Yusuke Sasano, Yoshiharu Iwabuchi, Shinichi Nishimura, Hideaki Kakeya

    The Journal of Organic Chemistry 86 (23) 16231-16248 2021/12/03

    Publisher: American Chemical Society ({ACS})

    DOI: 10.1021/acs.joc.1c01760  

    ISSN: 0022-3263

    eISSN: 1520-6904

  23. Design, Synthesis, and Antifungal Activity of 16,17-Dihydroheronamide C and ent-Heronamide C

    Naoki Kanoh, Ryusei Terashima, Hiromichi Nishiyama, Yuta Terajima, Shota Nagasawa, Yusuke Sasano, Yoshiharu Iwabuchi, Hiroaki Saito, Syusuke Egoshi, Kosuke Dodo, Mikiko Sodeoka, Chengqian Pan, Yoshinobu Ikeuchi, Shinichi Nishimura, Hideaki Kakeya

    The Journal of Organic Chemistry 86 (23) 16249-16258 2021/12/03

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/acs.joc.1c01761  

    ISSN: 0022-3263

    eISSN: 1520-6904

  24. ortho-C–H Acetoxylation of Cubane Enabling Access to Cubane Analogues of Pharmaceutically Relevant Scaffolds Peer-reviewed

    Shota Nagasawa, Masaki Hosaka, Yoshiharu Iwabuchi

    Organic Letters 23 (22) 8717-8721 2021/11/19

    Publisher: American Chemical Society ({ACS})

    DOI: 10.1021/acs.orglett.1c03144  

    ISSN: 1523-7060

    eISSN: 1523-7052

  25. Chromium-Salen Complex/Nitroxyl Radical Cooperative Catalysis: A Combination for Aerobic Intramolecular Dearomative Coupling of Phenols Peer-reviewed

    Shota Nagasawa, Shogo Fujiki, Yusuke Sasano, Yoshiharu Iwabuchi

    JOURNAL OF ORGANIC CHEMISTRY 86 (9) 6952-6968 2021/05

    DOI: 10.1021/acs.joc.1c00438  

    ISSN: 0022-3263

    eISSN: 1520-6904

  26. Expansion of Substrate Scope for Nitroxyl Radical/Copper-Catalyzed Aerobic Oxidation of Primary Alcohols: A Guideline for Catalyst Selection

    Yusuke Sasano, Aoto Yamaichi, Ryota Sasaki, Shota Nagasawa, Yoshiharu Iwabuchi

    CHEMICAL & PHARMACEUTICAL BULLETIN 69 (5) 488-497 2021/05

    DOI: 10.1248/cpb.c21-00043  

    ISSN: 0009-2363

  27. Enantiospecific Entry to a Common Decalin Intermediate for the Syntheses of Highly Oxygenated Terpenoids Peer-reviewed

    Shota Nagasawa, Kerry E. Jones, Richmond Sarpong

    The Journal of Organic Chemistry 84 (18) 12209-12215 2019/09/20

    Publisher: American Chemical Society (ACS)

    DOI: 10.1021/acs.joc.9b01937  

    ISSN: 0022-3263

    eISSN: 1520-6904

  28. Rearrangement of Hydroxylated Pinene Derivatives to Fenchone-Type Frameworks: Computational Evidence for Dynamically-Controlled Selectivity Peer-reviewed

    Shota Nagasawa

    J. Am. Chem. Soc. 140 9291 2018

    DOI: 10.1021/jacs.8b05804  

  29. 2-Azaadamantane N-oxyl (AZADO)/Cu Catalysis Enables Chemoselective Aerobic Oxidation of Alcohols Containing Electron-Rich Divalent Sulfur Functionalities Peer-reviewed

    Yusuke Sasano, Naoki Kogure, Shota Nagasawa, Koki Kasabata, Yoshiharu Iwabuchi

    ORGANIC LETTERS 20 (19) 6104-6107 2018

    DOI: 10.1021/acs.orglett.8b02528  

    ISSN: 1523-7060

    eISSN: 1523-7052

  30. Catalytic Oxygenative Allylic Transposition of Alkenes into Enones with an Azaadamantane-Type Oxoammonium Salt Catalyst Peer-reviewed

    Shota Nagasawa, Yusuke Sasano, Yoshiharu Iwabuchi

    CHEMISTRY-A EUROPEAN JOURNAL 23 (43) 10276-10279 2017/08

    DOI: 10.1002/chem.201702512  

    ISSN: 0947-6539

    eISSN: 1521-3765

  31. Synthesis of 1,3-Cycloalkadienes from Cycloalkenes: Unprecedented Reactivity of Oxoammonium Salts Peer-reviewed

    Shota Nagasawa, Yusuke Sasano, Yoshiharu Iwabuchi

    SYNLETT 28 (1) A13-A16 2017/01

    ISSN: 0936-5214

    eISSN: 1437-2096

  32. Synthesis of 1,3-Cycloalkadienes from Cycloalkenes: Unprecedented Reactivity of Oxoammonium Salts Peer-reviewed

    Shota Nagasawa, Yusuke Sasano, Yoshiharu Iwabuchi

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 55 (42) 13189-13194 2016/10

    DOI: 10.1002/anie.201607752  

    ISSN: 1433-7851

    eISSN: 1521-3773

  33. Highly Efficient Aerobic Oxidation of Alcohols by Using Less-Hindered Nitroxyl-Radical/Copper Catalysis: Optimum Catalyst Combinations and Their Substrate Scope Peer-reviewed

    Yusuke Sasano, Naoki Kogure, Tomohiro Nishiyama, Shota Nagasawa, Yoshiharu Iwabuchi

    CHEMISTRY-AN ASIAN JOURNAL 10 (4) 1004-1009 2015/04

    DOI: 10.1002/asia.201403245  

    ISSN: 1861-4728

    eISSN: 1861-471X

  34. Mechanistic Insight into Aerobic Alchol Oxidation Using NOx-Nitroxide Catalysis Based on Catalyst Structure-Activity Relationships Peer-reviewed

    Masatoshi Shibuya, Shota Nagasawa, Yuji Osada, Yoshiharu Iwabuchi

    JOURNAL OF ORGANIC CHEMISTRY 79 (21) 10256-10268 2014/11

    DOI: 10.1021/jo501862k  

    ISSN: 0022-3263

    eISSN: 1520-6904

  35. Highly Chemoselective Aerobic Oxidation of Amino Alcohols into Amino Carbonyl Compounds Peer-reviewed

    Yusuke Sasano, Shota Nagasawa, Mai Yamazaki, Masatoshi Shibuya, Jaiwook Park, Yoshiharu Iwabuchi

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 53 (12) 3236-3240 2014/03

    DOI: 10.1002/anie.201309634  

    ISSN: 1433-7851

    eISSN: 1521-3773

  36. Oxidation of nitroxyl radicals: electrochemical and computational studies Peer-reviewed

    Masatoshi Shibuya, Fabio Pichierri, Masaki Tomizawa, Shota Nagasawa, Iwao Suzuki, Yoshiharu Iwabuchi

    TETRAHEDRON LETTERS 53 (16) 2070-2073 2012/04

    DOI: 10.1016/j.tetlet.2012.02.033  

    ISSN: 0040-4039

  37. 9-Azanoradamantane N-Oxyl (Nor-AZADO): A Highly Active Organocatalyst for Alcohol Oxidation Peer-reviewed

    Masaki Hayashi, Yusuke Sasano, Shota Nagasawa, Masatoshi Shibuya, Yoshiharu Iwabuchi

    CHEMICAL & PHARMACEUTICAL BULLETIN 59 (12) 1570-1573 2011/12

    DOI: 10.1248/cpb.59.1570  

    ISSN: 0009-2363

Show all ︎Show first 5

Misc. 15

  1. Photosensitized Singlet Oxygen-supported Alcohol Oxidation Mediated by Nitroxyl Radical Catalyst

    西嶋政樹, 長澤翔太, 笹野裕介, 荒木保幸, 岩渕好治, 和田健彦

    日本化学会春季年会講演予稿集(Web) 103rd 2023

  2. THE UTILITY OF OXOAMMONIUM SPECIES IN ORGANIC SYNTHESIS: BEYOND ALCOHOL OXIDATION Peer-reviewed

    Shota Nagasawa, Yusuke Sasano, Yoshiharu Iwabuchi

    Heterocycles 105 (1) 61-114 2022

    DOI: 10.3987/REV-21-SR(R)2  

    ISSN: 0385-5414

    eISSN: 1881-0942

  3. Total Synthesis of Cytotrienin A

    建石悠貴, 佐藤亮, 小松慎吾, 野口正嗣, 長澤翔太, 笹野裕介, 叶直樹, 叶直樹, 岩渕好治

    天然有機化合物討論会講演要旨集(Web) 63rd 2021

    ISSN: 2433-1856

  4. Studies directed toward the creation of induced pluripotent small (iPS) molecules based on naturally occurring polyene macrolactams

    叶直樹, 叶直樹, 寺嶋優太, 田中卓, 寺島隆世, 西山大陸, 長澤翔太, 笹野裕介, 岩渕好治

    複素環化学討論会講演要旨集 50th 2021

  5. アンサマクロラクタム抗腫瘍活性天然物Cytotrienin Aの合成研究

    建石悠貴, 佐藤亮, 小松慎吾, 野口正嗣, 長澤翔太, 笹野裕介, 叶直樹, 岩渕好治

    創薬懇話会講演要旨集 2021 2021

  6. Studies aimed at the synthesis and mode of action of heronamide C analogues

    西山大陸, 寺島隆世, 長澤翔太, 岩渕好治, 叶直樹

    日本薬学会年会要旨集(Web) 141st 2021

    ISSN: 0918-9823

  7. Synthetic Study of Cytotrienin A (2)

    建石悠貴, 佐藤亮, 小松慎吾, 野口正嗣, 長澤翔太, 笹野裕介, 叶直樹, 岩渕好治

    日本薬学会年会要旨集(Web) 141st 2021

    ISSN: 0918-9823

  8. Synthetic Study on the Proposed Structure of Sceliphrolactam

    小山栞, 眞野昂裕, 長澤翔太, 岩渕好治, 叶直樹

    天然有機化合物討論会講演要旨集(Web) 62nd 2020

    ISSN: 2433-1856

  9. Synthetic Study of Cytotrienin A

    建石悠貴, 佐藤亮, 小松慎吾, 長澤翔太, 笹野裕介, 叶直樹, 岩渕好治

    日本薬学会年会要旨集(CD-ROM) 140th (Web) 2020

  10. Cytotrienin Aの合成研究:鈴木カップリングによるトリエン単位構築の検討

    建石悠貴, 佐藤亮, 小松慎吾, 野口正嗣, 長澤翔太, 笹野裕介, 叶直樹, 岩渕好治

    日本薬学会東北支部大会講演要旨集 58th 2019

  11. α-メチレン-γ-ブチロラクトンの効率的合成法の開発とセスキテルペノイド天然物の合成研究

    川口里紗, 福田宙央, 山口千歳, 長澤翔太, 濱直人, 叶直樹, 岩渕好治

    複素環化学討論会講演要旨集 47th 2017

  12. 有機ニトロキシルラジカル-銅触媒系を用いたアルコール空気酸化反応条件の最適化

    小暮直貴, 笹野裕介, 西山智弘, 長澤翔太, 岩渕好治

    日本薬学会年会要旨集(CD-ROM) 135th 2015

  13. AZADO-銅協奏型触媒を用いたアミノアルコール類の高化学選択的空気酸化反応

    笹野裕介, 長澤翔太, 西山智弘, 澁谷正俊, 岩渕好治

    日本プロセス化学会サマーシンポジウム講演要旨集 2013 2013

  14. AZADO-銅触媒系を用いるアミノアルコール類の高化学選択的空気酸化反応

    長澤翔太, 笹野裕介, 西山智弘, 澁谷正俊, 岩渕好治

    酸化反応討論会講演要旨集 46th 2013

  15. AZADO-銅協奏型触媒を用いたアルコール類の空気酸化反応

    西山智弘, 笹野裕介, 長澤翔太, 岩渕好治

    日本薬学会東北支部大会講演要旨集 52nd 2013

Show all ︎Show first 5

Presentations 4

  1. フェノールカップリングの精密制御を可能とする触媒系の開発とその展開 Invited

    日本薬学会東北支部 第23回化学系若手研究者セミナー 2026/01/17

  2. 1,3-置換クネアンのメタ置換ベンゼン生物学的等価体としての利用を志向した精密有機合成化学 Invited

    第12回医薬品開発研究センターシンポジウム 2025/11/13

  3. 蛋白質-リガンド複合体共結晶構造解析に立脚した創薬研究の最近の取り組み Invited

    第二回 生命科学系研究へのNanoTerasu利活用シンポジウム 2025/08/07

  4. かご型炭化水素キュバン・クネアンの 創薬応用を目指した精密有機合成化学

    BINDS第6回合成勉強会 2024/09/14

Research Projects 9

  1. Development of Catalytic Redox Systems Utilizing the Distinctive Features of Nitrogen-Containing Organic Radicals for Advanced Molecular Transformations

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2025/04/01 - 2029/03/31

  2. Exploration of medicinal potential of cubane: beyond bioisostere

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Tohoku University

    2025/04/01 - 2028/03/31

  3. 高歪みかご型炭化水素の医薬化学的利用価値を拡張するための有機化学的方法論の開拓

    長澤 翔太

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 若手研究

    Institution: 東北大学

    2023/04/01 - 2025/03/31

    More details Close

    高歪みかご型炭化水素のユニークな反応性,分子特性の理解を基盤として,その医薬化学的利用価値を拡張するための有機化学的方法論を開拓するために以下に示す2つの具体的方策を検討した. 「キュバン C-H 結合をラジカル的に切断し,様々なラジカルアクセプターと反応させるための一般的手法を開拓する」検討においては,種々検討の結果,タングステン酸光触媒を用いることで,触媒的なラジカル的キュバンC-H結合の切断が進行し,ラジカル受容体とのカップリングが進行することを見出した (Org. Lett. 2024, 26, 658).この結果は,ベンゼン環の生物学的等価体として知られるキュバンを精密に修飾するための新規な手法であり,この反応を用いた種々の医薬品アナログ等の合成における基盤技術となりうる. 「1,3-置換クネアンを,その構造的類似性と分子の剛直性に鑑み,メタ置換ベンゼンの生物学的等価体として提案する」検討においては,キュバン上の置換基が異性化に与える影響を精査することで,高選択的に1,3-置換クネアンを得る手法を見出した.この1,3-置換クネアンを原料とし,メタ置換ベンゼンを有する抗炎症薬であるケトプロフェンのクネアンアナログを合成することで,その生物活性の比較に成功した.さらに得られた生物活性の結果についてインシリコ解析を行うことでその解釈も行った(Chem. Eur. J. 2024, 30, e202303548).本研究の遂行過程で,2つの異なる研究グループより類似の内容の論文が報告され,また得られたアナログは「生物学的に等価」と言えるほどの活性を保持していなかったものの,申請者らはクネアン骨格を有する化合物の生物活性評価に世界で初めて成功した.本成果は,医薬分子設計の新たな指針を示唆するものであり、創薬科学研究の進展への寄与が期待される.

  4. 有機ニトロキシルラジカルー遷移金属協奏触媒の機能創成を機軸とする精密有機分子構築

    岩渕 好治, 笹野 裕介, 山越 博幸, 長澤 翔太

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(B)

    Institution: 東北大学

    2022/04/01 - 2025/03/31

    More details Close

    本研究は、「有機ニトロキシルラジカル-遷移金属協奏触媒システム」に潜在する、未踏の合成化学的機能性の開発を機軸として、常温・常圧で空気中の分子状酸素を触媒的に活性化して、①アルコールおよび②フェノールの高化学選択的酸化を基点とする高次分子変換法の創出を企図して3年間の計画研究として実施するものである。以下、項目毎に2年目までの研究実績の概要を記す。 ①多座配位型AZADOを網羅的に合成し、N-保護 vic-アミノアルコールと第一級アミンとの空気酸化的縮合によるペプチド合成反応を検討した。その結果、Stahlらによって報告されていたABNO-Cu触媒を凌駕する合成効率を発揮する多座配位型AZADO-Cuハイブリッド触媒システムを見出すことに成功した。種々のアミノ酸由来のN-保護 vic-アミノアルコールを用いて基質適用性を検証した結果、本触媒システムは幅広い官能基許容性を示し、多様なジペプチド誘導体の合成に適用可能であることを確認した。また、上述した酸化的ペプチド縮合反応の検討の途上において、予期せず見出した酸化的ペプチド切断反応について検討を進め、その切断部位を特定することが出来た。 ②クロムサレン錯体と有機ニトロキシルラジカルの協奏触媒系による分子内脱芳香族的フェノールカップリング反応の不斉反応への展開と触媒機構の解明を目指した検討を行った。その結果、不斉フェノールカップリング反応の生成物の絶対立体化学を決定することに成功し、これより基質特異性とリガンドー不斉収率の相関に関する知見を統合して、本分子内脱芳香族的不斉フェノールカップリング反応の触媒機構モデルを構築した。また、本触媒システムの合成化学的有用性の拡張を企図して分子間フェノールカップリングへの適用を行い、効率的なレスベラトロール型スチルベノイドの空気酸化的二量化反応を開発することに成功した。

  5. 有機ニトロキシルラジカルー遷移金属協奏触媒の機能創成を機軸とする精密有機分子構築

    岩渕 好治, 笹野 裕介, 山越 博幸, 長澤 翔太

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 基盤研究(B)

    Institution: 東北大学

    2022/04/01 - 2025/03/31

  6. 遷移金属触媒的C-H官能基化を基盤とするキュバン修飾法の開発とその医薬化学的応用

    長澤 翔太

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 若手研究

    Institution: 東北大学

    2021/04/01 - 2023/03/31

    More details Close

    前年度までに萌芽的成果を得ていたキュバンのCーHアセトキシ化反応について,その最適化検討を行い,基質適用性の検討を行った.また,得られたアセトキシ化キュバンについて,各種官能基変換を行うことで医薬品ならびに芳香族複素環のキュバンアナログの合成に成功した.これらの成果についてまとめて学術雑誌に投稿し,採択された (Organic Letters, 2021, 23, 8717).本論文はSupplementary Cover Art にも採択された. 一方で,上記結果を踏まえ研究実施計画に記した内容について,以下の結果を得た. 1.キュバンC-H結合の効率的な直截的転換を可能とする配向基の探索を行った.オキシム型配向基を種々検討したが,先述した論文記載のものを上回る効率性を有する配向基を見出すことはできなかった.そこで,オキシム型からの脱却を志向し,他の配向基によるC-H官能基化に実績のある置換基を,先に見出した条件を用いて再度検討した.その結果,特定のアミド型配向基において高い効率性で先述のアセトキシ化反応が進行することを見出した.この萌芽的結果を元に,現在配向基の最適化検討を進めている. 2.分子内C-H官能基化反応によるキュバン縮環型化合物の合成検討を行った.ロジウム等を用いる各種C-H挿入反応や,C-H活性化を経る官能基化を試みたものの,所望の官能基化キュバンを得ることはできなかった.この結果,並びに研究代表者の過去の知見から,これら分子内反応による官能基化はキュバンの特殊な構造的特徴に由来して困難であると考え,新たな分子間反応に基づくC-H官能基化法を探索することとして検討を行った.その結果,新たな分子間C-H官能基化法に基づくキュバン官能基化手法を見出すに至った.

  7. Radical-initiated C-H functionalization of cubane for medicinal chemistry

    Nagasawa Shota

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity start-up

    Category: Grant-in-Aid for Research Activity start-up

    Institution: Tohoku University

    2019/08 - 2021/03

    More details Close

    Unfortunately, an appropriate directing groups and conditions for radical-initiated C-H functionalization have not been found. On the other hand, introduction of an acetoxy group into cubane skeleton have been achieved by applying reaction conditions for transition-metal catalyzed C-H functionalization. Furthermore, the obtained acetoxylated compound could be converted into a cubane analog of pharmaceutically important aromatics. Preparation of manuscript including these result is underway.

  8. 抗腫瘍活性天然物 Taxagifine およびその誘導体の合成研究 Competitive

    Offer Organization: 内藤記念科学振興財団

    System: 海外留学助成金

    2017/06 - 2018/05

  9. アザアダマンタン型オキソアンモニウム塩を触媒とするオレ フィン類空気酸化反応の開発 Competitive

    Offer Organization: 日本学術振興会

    System: 特別研究員奨励費

    2014/04 - 2017/03

Show all Show first 5