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Innovative approach to illisimonin A by one-step multi-ring construction strategy

Research Project

Project/Area Number 20K05485
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 33020:Synthetic organic chemistry-related
Research InstitutionHokkaido University

Principal Investigator

Suzuki Takahiro  北海道大学, 理学研究院, 准教授 (80367052)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords天然物合成 / セスキテルペン / Diels-Alder反応 / ビシクロ[2.2.1]ヘプタン / 天然物全合成
Outline of Research at the Start

自然界から産出される化合物(天然物)は有用な生物活性を示すものが多く、我々人類は古くからそれらを利用し、医薬品・農薬として我々人類の健康増進に貢献してきた。それらは有機合成化学の力によって工業的にも合成されている。しかし一方で、立体的に複雑な縮環構造(高次構造)を有する化合物は、現代の有機合成化学をもってしても依然困難な課題である。申請者の提案する「一段階多重環構築戦略」は、この課題に対する有効なアプローチであると考えている。そこで、近年シキミ族植物から単離が報告されたillisimonin Aを標的化合物とし、全合成を達成することで実証することにした。

Outline of Final Research Achievements

A number of natural organic compounds with sterically complex fused ring structures (higher-order structures) exhibit useful biological activities. Illisimonin A, which was recently reported to be isolated from nature, possesses a higher-order structure and, together with its biological activity, has attracted the interest of numerous scientists. The aim of this study was the efficient total synthesis of Illisimonin A based on the "one-step multiple ring construction strategy" proposed by the applicant.
Based on the presumed biosynthetic pathway of Illisimonin A, the intramolecular Diels-Alder reaction of orthobenzoquinone and the subsequent benzylic acid rearrangement were set as the key reactions, and the practical synthesis using model compounds was successfully performed to obtain the Illisimonin A skeleton.

Academic Significance and Societal Importance of the Research Achievements

本研究により、天然物であるイリシモニンAの骨格の合成に成功したことから、天然物の生合成経路を理解する上での学術的意義がある。また、天然物から新規な医薬品を開発するためには、天然物の全合成が必要であり、本研究によりイリシモニンAの効率的な合成法が確立されたことで、医薬品開発に対する社会的意義がある。さらに、本研究で提案された一段階多重環構築戦略は、他の天然物の合成にも応用できる可能性があり、有機合成化学の有用な技術基盤となることが期待される。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] Total Synthesis of (+)-Coriamyrtin via a Desymmetrizing Strategy Involving a 1,3-Cyclopentanedione Moiety2023

    • Author(s)
      Ikeuchi Kazutada、Haraguchi Shota、Fujii Ryo、Yamada Hidetoshi、Suzuki Takahiro、Tanino Keiji
    • Journal Title

      Organic Letters

      Volume: - Issue: 16 Pages: 2751-2755

    • DOI

      10.1021/acs.orglett.3c00249

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis of 2-Alkyl-2-(2-furanyl)-1,3-cyclopentanediones2023

    • Author(s)
      Ikeuchi Kazutada、Tanino Keiji、Ozoe Yusuke、Kato Ranmaru、Suzuki Takahiro
    • Journal Title

      Synthesis

      Volume: - Issue: 10 Pages: 1525-1532

    • DOI

      10.1055/a-2004-1333

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Diastereoselective Synthesis of trans-anti-Hydrophenanthrenes via Ti-mediated Radical Cyclization and Total Synthesis of Kamebanin2023

    • Author(s)
      Suzuki Takahiro、Ikeda Wataru、Kanno Ayaka、Ikeuchi Kazutada、Tanino Keiji
    • Journal Title

      Chemistry A European Journal

      Volume: 29 Issue: 17

    • DOI

      10.1002/chem.202203511

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Scope and limitations of absolute configuration determination of allenic natural products using the C=C=C stretching VCD signal2023

    • Author(s)
      Taniguchi Tohru、Mutmainah、Takimoto Shu、Suzuki Takahiro、Watanabe Soichiro、Matsuda Fuyuhiko、Umezawa Taiki、Monde Kenji
    • Journal Title

      Organic & Biomolecular Chemistry

      Volume: 21 Issue: 3 Pages: 569-574

    • DOI

      10.1039/d2ob01520j

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Total Synthesis and Structural Revision of the 6,11-Epoxyisodaucane Natural Sesquiterpene Using an Anionic 8π Electrocyclic Reaction2022

    • Author(s)
      Kato Ranmaru、Saito Hiroki、Ikeuchi Kazutada、Suzuki Takahiro、Tanino Keiji
    • Journal Title

      Organic Letters

      Volume: 24 Issue: 43 Pages: 7939-7943

    • DOI

      10.1021/acs.orglett.2c03068

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Total Syntheses of Chloropupukeananin and Its Related Natural Products2022

    • Author(s)
      Suzuki Takahiro
    • Journal Title

      Organics

      Volume: 3 Issue: 3 Pages: 304-319

    • DOI

      10.3390/org3030023

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Total Synthesis of 2-Isocyanoallopupukeanane: Construction of Caged Skeleton by Intramolecular Alkylation of Bromonitriles2022

    • Author(s)
      Kato Kosuke、Ikeuchi Kazutada、Suzuki Takahiro、Tanino Keiji
    • Journal Title

      Organic Letters

      Volume: 24 Issue: 35 Pages: 6407-6411

    • DOI

      10.1021/acs.orglett.2c02434

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two-Step Method for Constructing a Quaternary Carbon Atom with a Geminal Divinyl Group from a Ketone2022

    • Author(s)
      Ogura Ryota、Satoh Kazuto、Kiuchi Wataru、Kato Kosuke、Ikeuchi Kazutada、Suzuki Takahiro、Tanino Keiji
    • Journal Title

      Organic Letters

      Volume: 24 Issue: 28 Pages: 5040-5044

    • DOI

      10.1021/acs.orglett.2c01799

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis of Illisimonin a Skeleton by Intramolecular Diels?Alder Reaction of Ortho-Benzoquinones and Biomimetic Skeletal Rearrangement of Allo-Cedranes2021

    • Author(s)
      Suzuki Takahiro、Nagahama Riko、Fariz Muhammad Aiman、Yukutake Yuki、Ikeuchi Kazutada、Tanino Keiji
    • Journal Title

      Organics

      Volume: 2 Issue: 3 Pages: 306-312

    • DOI

      10.3390/org2030016

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Synthetic Studies on Illisimonin A2022

    • Author(s)
      Muhammad Aiman bin Mohd Fariz, Takahiro Suzuki, Riko Nagahama, Yuki Yukutake, Keiji Tanino
    • Organizer
      日本化学会 第102春季年会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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