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Studies toward the total synthesis of Caribbean ciguatoxin for the development of a highly sensitive antibody-based immunoassy

Research Project

Project/Area Number 16H03278
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomolecular chemistry
Research InstitutionTohoku University

Principal Investigator

Sasaki Makoto  東北大学, 生命科学研究科, 教授 (80235267)

Research Collaborator Iwasaki Kotaro  
Fujii Ikuo  
Tsumuraya Takeshi  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Keywordsカリビアンシガトキシン / シガテラ中毒 / 効率的全合成 / 抗体作製 / 高感度微量検出法 / 抗体作成
Outline of Final Research Achievements

Ciguatera is a naturally occurring seafood poisoning prevalent in tropical and subtropical regions of the Pacific Ocean, Indian Ocean, and Caribbean Sea with more than 20,000-60,000 victims and continues to be a serious worldwide public health concern. Caribbean ciguatoxins, the principal causative toxins for ciguatera around the Caribbean Sea areas, possess the most complicated structure among the ciguatoxins known to date. An efficient synthesis route to the LMN-ring fragment of Caribbean ciguatoxin C-CTX-1 has been developed. The key feature of the synthesis includes hydrogen atom transfer based reductive olefin cross-coupling to access a sterically congested tetrasubstituted stereogenic center on the strained seven-membered M-ring with the pseudoaxially oriented 1,3-dimethyl structure. Further studies towards the synthesis of the right-hand HIJKLMN-ring fragment through convergent union of the HI- and KLMN-ring fragments based on Suzuki-Miyaura reaction are underway.

Academic Significance and Societal Importance of the Research Achievements

近年、カリビアンシガトキシンによるシガテラ食中毒が世界的に拡大しつつあり、その予防対策は急務の課題となっている。カリビアンシガトキシンは天然から極微量しか得られないため、毒判定のための純粋な標準サンプルの供給や微量検出法の開発のために、化学合成による物質供給が世界的に強く望まれている。本研究により、カリビアンシガトキシン合成における最難関課題の一つであるLMN環部の合成法が確立できた。これにより、分子右半分に相当するHIJKLMN環フラグメントの合成とそれを用いたモノクローナル抗体の作製への道が拓かれた。今後、カリビアンシガトキシンの微量検出法の開発に貢献する重要な成果である。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (34 results)

All 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (12 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 12 results,  Acknowledgement Compliant: 3 results) Presentation (16 results) Book (4 results) Remarks (1 results)

  • [Int'l Joint Research] University of Santiago de Compostela(Spain)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Studies towards the total synthesis of Caribbean ciguatoxin C-CTX-1: Synthesis of the LMN-ring fragment through reductive olefin cross-coupling2018

    • Author(s)
      Makoto Sasaki, Kotaro Iwasaki, Keisuke Arai
    • Journal Title

      org. Lett.

      Volume: 20 Issue: 22 Pages: 7163-7166

    • DOI

      10.1021/acs.orglett.8b03102

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Total Synthesis of (-)‐Enigmazole A2018

    • Author(s)
      K. Sakurai, M. Sasaki, H. Fuwa
    • Journal Title

      Angewandte Chemie, International Edition

      Volume: 57 Issue: 18 Pages: 5143-5146

    • DOI

      10.1002/anie.201801561

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tetracyclic Truncated Analogue of the Marine Toxin Gambierol Modifies NMDA, Tau, and Amyloid β Expression in Mice Brains: Implications in AD Pathology2017

    • Author(s)
      Eva Alonso, Andres C. Vieira, Ines Rodoriguez, Rebeca Alvarino, Sandra Gegunde, Haruhiko Fuwa, Yuto Suga, Makoto Sasaki, Amparo Alfonso, Jose Mannuel Cifuentes, Luis M. Botana
    • Journal Title

      ACS Chemical Neuroscience

      Volume: 8 Issue: 6 Pages: 1358-1367

    • DOI

      10.1021/acschemneuro.7b00012

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Total Synthesis of Polycavernosides A and B, Two Lethal Toxins from Red Alga.2017

    • Author(s)
      Kotaro Iwasaki, Satori Sasaki, Yusuke Kasai, Yuki Kawashima, Shohei Sasaki, Takanori Ito, Mari Yotsu-Yamashita, Makoto Sasaki.
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 82 Issue: 24 Pages: 13201-13219

    • DOI

      10.1021/acs.joc.7b02293

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cytotoxicity of goniodomin A and B in non contractile cells2016

    • Author(s)
      B. Espina, E. Cagide, M. C. Louzao, N. Vilarino, M. R. Vieytes, Y. Takeda, M. Sasaki, and L. M. Botana
    • Journal Title

      Toxicol. Lett.

      Volume: 250-251 Pages: 10-20

    • DOI

      10.1016/j.toxlet.2016.04.001

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Total Synthesis and Complete Stereostructure of a Marine Macrolide Glycoside, (-)-Lyngbyaloside B2016

    • Author(s)
      H. Fuwa, N. Yamagata, Y. Okuaki, Y. Ogata, A. Saito, M. Sasaki
    • Journal Title

      Chemistry - A European Journal

      Volume: 22 Issue: 20 Pages: 6815-6829

    • DOI

      10.1002/chem.201600341

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Toward the total synthesis of amphidinolide N: Synthesis of the C8-C29 fragment2016

    • Author(s)
      Y. Kawashima, A. Toyoshima, H. Fuwa, and M. Sasaki
    • Journal Title

      Org. Lett.

      Volume: 18 Issue: 9 Pages: 2232-2235

    • DOI

      10.1021/acs.orglett.6b00871

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effect of Carbon Chain Length in Acyl Coenzyme A on the Efficiency of Enzymatic Transformation of Okadaic Acid to 7-O-Acyl Okadaic Acid2016

    • Author(s)
      Sachie Furumochi, Tatsuya Onoda, Yuko Cho, Haruhiko Fuwa, Makoto Sasaki, Mari Yotsu-Yamashita, Keiichi Konoki
    • Journal Title

      Bioorganic & Medicinal Chemistry Letters

      Volume: 26 Issue: 13 Pages: 2992-2996

    • DOI

      10.1016/j.bmcl.2016.05.027

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Toward the Total Synthesis of Amphidinolide N: Convergent Synthesis of the C1-C13 Segment2016

    • Author(s)
      Atsushi Toyoshima, Makoto Sasaki
    • Journal Title

      Tetrahedron Letters

      Volume: 57 Issue: 31 Pages: 3532-3534

    • DOI

      10.1016/j.tetlet.2016.06.107

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Diastereoselective Ring-Closing Metathesis as a Means to Construct Medium-Sized Cyclic Ethers: Application to the Synthesis of a Photoactivatable Gambierol Derivative2016

    • Author(s)
      Yu Onodera, Kazuaki Hirota, Yuto Suga, Keiichi Konoki, Mari Yotsu-Yamashita, Makoto Sasaki, and Haruhiko Fuwa*
    • Journal Title

      J. Org. Chem.

      Volume: 81 Issue: 18 Pages: 8234-8252

    • DOI

      10.1021/acs.joc.6b01302

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stereodivergent Synthesis and Configurational Assignment of the C1-C15 Segment of Amphirionin-52016

    • Author(s)
      Moemi Kanto, Sota Sato, Masashi Tsuda, Makoto Sasaki
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 81 Issue: 19 Pages: 9105-9121

    • DOI

      10.1021/acs.joc.6b01700

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Exploiting Ruthenium Cabene-Catalyzed Reactions in Total Synthesis of Marine Oxacycle Natural Products2016

    • Author(s)
      Haruhiko Fuwa, Makoto Sasaki
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 89 Issue: 12 Pages: 1403-1415

    • DOI

      10.1246/bcsj.20160224

    • NAID

      130005316188

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Presentation] 海洋生物由来の生物機能大環状天然中分子の高効率全合成2018

    • Author(s)
      佐々木 誠
    • Organizer
      科研費・新学術領域研究「反応集積化が導く中分子戦略:高次生物機能分子の創製」第5回成果報告会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ゴニオドミンAの全合成研究2018

    • Author(s)
      川島悠岐、三好太朗、岩崎浩太郎、不破春彦、佐々木 誠
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] エニグマゾールAの全合成研究2018

    • Author(s)
      櫻井敬祐、佐々木 誠、不破春彦
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ゴニオドミンAの全合成研究2017

    • Author(s)
      川島悠岐、三好太朗、岩崎浩太郎、不破春彦、佐々木 誠
    • Organizer
      第28回万有仙台シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] ゴニオドミンAの全合成研究2017

    • Author(s)
      川島悠岐、三好太朗、岩崎浩太郎、不破春彦、佐々木 誠
    • Organizer
      第59回天然有機化合物討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] ゴニオドミンAの全合成研究2017

    • Author(s)
      川島悠岐、三好太朗、岩崎浩太郎、不破春彦、佐々木 誠
    • Organizer
      第112回有機合成シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] ネオペルトリドのAMCA標識アナログの合成と機能評価2017

    • Author(s)
      柳翔太、佐々木 誠、不破春彦
    • Organizer
      日本化学会第97春季年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] ポルチミンの合成研究2017

    • Author(s)
      三好太朗、齋藤真輝、岩崎浩太郎、佐々木 誠
    • Organizer
      日本化学会第97春季年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] ポルチミンの合成研究2017

    • Author(s)
      齋藤真輝、三好太朗、岩崎浩太郎、佐々木 誠
    • Organizer
      日本化学会第97春季年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] イリオモテオリド-2aの合成および構造研究2017

    • Author(s)
      坂本渓太、佐々木 誠、不破春彦
    • Organizer
      日本化学会第97春季年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] エニグマゾールAの合成研究2017

    • Author(s)
      櫻井敬祐、佐々木 誠、不破春彦
    • Organizer
      日本化学会第97春季年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] カリビアンシガトキシンの合成研究ーMN環部の立体選択的合成法の開発ー2017

    • Author(s)
      岩崎浩太郎、荒井啓介、佐々木 誠
    • Organizer
      日本薬学会第137年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 日本ケミカルバイオロジー学会第11回年会2016

    • Author(s)
      柳 翔太、野口拓真、川上雅人、佐々木 誠、不破春彦、丹羽伸介、杉本亜砂子
    • Organizer
      ネオペルトリド蛍光標識アナログの設計・合成・機能評価
    • Related Report
      2016 Annual Research Report
  • [Presentation] イリオモテオリド-2aの全合成研究2016

    • Author(s)
      坂本渓太、佐々木 誠、不破春彦
    • Organizer
      第63回トキシンシンポジム
    • Related Report
      2016 Annual Research Report
  • [Presentation] ガンビエロールの光感応性類縁体の合成と機能解析2016

    • Author(s)
      小野寺悠、佐々木 誠、不破春彦
    • Organizer
      第63回トキシンシンポジム
    • Related Report
      2016 Annual Research Report
  • [Presentation] ネオペルトリドの蛍光標識体の合成と機能解析2016

    • Author(s)
      柳 翔太、佐々木 誠、不破春彦
    • Organizer
      第63回トキシンシンポジム
    • Related Report
      2016 Annual Research Report
  • [Book] 理科年表 20192018

    • Author(s)
      佐々木 誠
    • Total Pages
      17
    • Publisher
      丸善出版株式会社
    • ISBN
      9784621303320
    • Related Report
      2018 Annual Research Report
  • [Book] 天然有機化合物の全合成 独創的なものづくりの反応と戦略2018

    • Author(s)
      不破春彦、佐々木 誠
    • Total Pages
      7
    • Publisher
      化学同人
    • Related Report
      2017 Annual Research Report
  • [Book] 理科年表 平成302017

    • Author(s)
      佐々木 誠
    • Total Pages
      17
    • Publisher
      丸善出版株式会社
    • ISBN
      9784621302187
    • Related Report
      2017 Annual Research Report
  • [Book] 理化年表 平成29年2016

    • Author(s)
      佐々木 誠
    • Total Pages
      17
    • Publisher
      丸善出版株式会社
    • ISBN
      9784621300961
    • Related Report
      2016 Annual Research Report
  • [Remarks] Sasaki Group Web Site

    • URL

      http://www.agri.tohoku.ac.jp/kanshoku/

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2022-01-27  

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