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Synthesis of Biologically Active Alkaloids Based on a Novel Method for Constructing Bicyclic Skeletons and thier Structure-Activity Relationship

Research Project

Project/Area Number 18K06548
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47010:Pharmaceutical chemistry and drug development sciences-related
Research InstitutionKyoto University

Principal Investigator

Takikawa Hiroshi  京都大学, 薬学研究科, 講師 (70550755)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords天然物合成 / アルカロイド / 橋頭位イオン / ベンザイン / 構造活性相関
Outline of Final Research Achievements

Tubingensin B is a hexacyclic indole diterpenoid isolated from the marine fungus and reported to be cytotoxic to Hela cells and herpes simplex virus. From a structural viewpoint, this compound showcases an exquisite molecular architecture, i.e., an indole-fused benzobicyclo[3.2.2]nonene core, a rare scaffold in natural products.
We have achieved the total synthesis of tubingensin B by our novel synthetic route, including 1) intramolecular [4+2] cycloaddition between benzyne and cyclohexadiene connected by a Si-O bond, 2) alkyl-selective ring expansion followed by iodination of intermediary bridgehead cation species, and 3) C-C bond formation at the bridgehead position by exploiting bridgehead anion species generated by iodine-lithium exchange.

Academic Significance and Societal Importance of the Research Achievements

近年、創薬に関連する化合物は、平面的なものより立体的なものの方が重要であることが指摘されている。本研究の対象化合物であるツビンゲンシンBもまた、より単純で平面性の高い類縁体より高い生物活性を示すことが知られている。本研究を通じて開発した合成手法を活用することにより、ビシクロ骨格上の置換基改変に基づく柔軟な構造展開が可能になる。将来的には、より詳細な構造活性相関研究を通じた優れた生物活性を有する新規有用物質の創製につながるものと期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (24 results)

All 2021 2020 2019 2018

All Journal Article (9 results) (of which Peer Reviewed: 8 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results)

  • [Journal Article] Intramolecular Benzyne-Phenolate [4+2] Cycloadditions2020

    • Author(s)
      Takikawa Hiroshi、Nishii Arata、Takiguchi Hiromu、Yagishita Hirotoshi、Tanaka Masato、Hirano Keiichi、Uchiyama Masanobu、Ohmori Ken、Suzuki Keisuke
    • Journal Title

      Angewandte Chemie International Edition

      Volume: Just Accepted Issue: 30 Pages: 12440-12444

    • DOI

      10.1002/anie.202003131

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthetic Study on Acremoxanthone A, Part 2: Model Study on the EFG Xanthone Moiety through a Nitrile Oxide Cycloaddition?SNAr Sequence2020

    • Author(s)
      Suzuki Keisuke、Nakakohara Hiroshi、Hirano Yoichi、Ohmori Ken、Takikawa Hiroshi
    • Journal Title

      Synlett

      Volume: 32 Issue: 04 Pages: 423-428

    • DOI

      10.1055/a-1303-5613

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthetic Strategy toward Dearomatized Polycyclic Polyketide Natural Products2019

    • Author(s)
      Takikawa Hiroshi、Suzuki Keisuke
    • Journal Title

      Journal of Synthetic Organic Chemistry, Japan

      Volume: 77 Issue: 1 Pages: 13-25

    • DOI

      10.5059/yukigoseikyokaishi.77.13

    • NAID

      130007556249

    • ISSN
      0037-9980, 1883-6526
    • Year and Date
      2019-01-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] 2-Bromo-6-(chlorodiisopropylsilyl)phenyl tosylate as an efficient platform for intramolecular benzyne?diene [4 + 2] cycloaddition2019

    • Author(s)
      Nishii Arata、Takikawa Hiroshi、Suzuki Keisuke
    • Journal Title

      Chemical Science

      Volume: 10 Issue: 13 Pages: 3840-3845

    • DOI

      10.1039/c8sc05518a

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Trial and Error in Total Synthesis of Polyketide-derived Polycyclic Natural Products2018

    • Author(s)
      Takikawa Hiroshi
    • Journal Title

      Journal of Synthetic Organic Chemistry, Japan

      Volume: 76 Issue: 5 Pages: 478-481

    • DOI

      10.5059/yukigoseikyokaishi.76.478

    • NAID

      130006733912

    • ISSN
      0037-9980, 1883-6526
    • Year and Date
      2018-05-01
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Total Synthesis of Bis-anthraquinone Antibiotic BE-43472B2018

    • Author(s)
      Yamashita Yu、Hirano Yoichi、Takada Akiomi、Takikawa Hiroshi、Suzuki Keisuke
    • Journal Title

      Synthesis

      Volume: 50 Issue: 13 Pages: 2490-2515

    • DOI

      10.1055/s-0037-1610136

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Synthesis and Properties of Tribenzocarbazoles via an Acid-Promoted Retro (2+2)-Cycloaddition of Azapropellanes2018

    • Author(s)
      Ogawa Naoki、Yamaoka Yousuke、Takikawa Hiroshi、Tsubaki Kazunori、Takasu Kiyosei
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 83 Issue: 15 Pages: 7994-8002

    • DOI

      10.1021/acs.joc.8b00870

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Aryne-based strategy in the total synthesis of naturally occurring polycyclic compounds2018

    • Author(s)
      Takikawa Hiroshi、Nishii Arata、Sakai Takahiro、Suzuki Keisuke
    • Journal Title

      Chemical Society Reviews

      Volume: 47 Issue: 21 Pages: 8030-8056

    • DOI

      10.1039/c8cs00350e

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] 飛翔する若手研究者「ヘテロ環の特性を利用した天然物の全合成」2018

    • Author(s)
      瀧川紘
    • Journal Title

      化学と工業

      Volume: 71 Pages: 603-604

    • Related Report
      2018 Research-status Report
  • [Presentation] ベンザインの分子内反応を拡張する新規プラットフォーム分子の開発2021

    • Author(s)
      瀧川 紘、田渡 司、山岡庸介、高須清誠
    • Organizer
      日本薬学会第141年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] (-)-ツビンゲンシンBの全合成2020

    • Author(s)
      小川泰輝、西井 新、山岡庸介、鈴木啓介、高須清誠、瀧川 紘
    • Organizer
      第62回天然有機化合物討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 特異なかご型構造をモチーフとする多環式天然物の合成戦略2020

    • Author(s)
      瀧川 紘
    • Organizer
      有機合成化学協会「Mukaiyama Award・奨励賞」受賞講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 抗ウイルス性インドールジテルペノイド(-)-ツビンゲンシンBの全合成2020

    • Author(s)
      瀧川 紘・小川 泰輝・西井 新・鈴木 啓介・高須 清誠
    • Organizer
      日本化学会第100春季年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Synthetic study of tubingensin B, a hexacyclic indole diterpenoid natural product2019

    • Author(s)
      Hiroshi Takikawa, Taiki Ogawa, Arata Nishii, Yousuke Yamaoka, Keisuke Suzuki, Kiyosei Takasu
    • Organizer
      International Chemical Biology Society 8th Annual Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 特異なかご型構造をモチーフとする多環式天然物の合成戦略2019

    • Author(s)
      瀧川 紘
    • Organizer
      第4回有機若手ワークショップ
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Synthetic study of tubingensin B, a hexacyclic indole diterpenoid2019

    • Author(s)
      Hiroshi Takikawa, Taiki Ogawa, Yousuke Yamaoka, Keisuke Suzuki, Kiyosei Takasu
    • Organizer
      第12回有機触媒シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] オルトキノンモノアセタールを用いた立体選択的反応2019

    • Author(s)
      瀧川紘
    • Organizer
      第6回新学術中分子戦略若手シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] 高反応性化学種を使いこなす:天然物合成が導く新反応の開発2019

    • Author(s)
      瀧川紘
    • Organizer
      日本薬学会第139年会 一般シンポジウム「有機合成化学の若い力」
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 抗ウイルス性物質Tubingensin Bの合成研究2019

    • Author(s)
      瀧川紘、小川泰輝、西井新、山岡庸介、鈴木啓介、高須清誠
    • Organizer
      日本薬学会第139年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 不斉補助基を活用したオルトキノンモノアセタールに対する立体選択的1,2-付加反応の開発2019

    • Author(s)
      瀧川紘、野々上喜一、阪田慶一郎、大山侃志、山岡庸介、鈴木啓介、高須清誠
    • Organizer
      日本薬学会第139年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 高反応性化学種を活用した骨格構築反応と天然物合成2018

    • Author(s)
      瀧川紘
    • Organizer
      第53回天然物化学談話会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] 光学活性オルトキノンモノアセタールの合成と反応2018

    • Author(s)
      瀧川紘、野々上喜一、阪田慶一郎、大山侃志、山岡庸介、鈴木啓介、高須清誠
    • Organizer
      第48回複素環化学討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] Silicon-tether Strategy for Intramolecular [4+2] Cycloaddition of Benzyne with Dienes2018

    • Author(s)
      Hiroshi Takikawa
    • Organizer
      19MICC & ICPAC Langkawi 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Synthetic Studies on Herquline A, A Cage-shaped Dityrosine Natural Product2018

    • Author(s)
      瀧川紘、Yu-Kai Sun、山岡庸介、高須清誠
    • Organizer
      第68回日本薬学会近畿支部総会・大会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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