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Synthetic Study of Lactmaycins with Cathepsin B Inhibitory Activity

Research Project

Project/Area Number 20K05518
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 InstitutionMeiji University

Principal Investigator

OGAWA Narihito  明治大学, 理工学部, 専任准教授 (50611109)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsラクトマイシン類 / カップリング反応 / 立体選択的合成 / ラクトマイシン / 網羅的合成 / 不斉合成
Outline of Research at the Start

ラクトマイシン類はStreptomyces sp. ACT232から単離された新規ポリケチド天然物である。本研究では,ラクトマイシン類やその誘導体・類縁体の網羅的な合成法開発を行う。骨格構築には,アセチレンカップリングを利用する収束的合成法により構築する。不斉中心はすべての立体化学を自在に構築するため不斉反応を活用する。多様な誘導体合成のため,合成終盤に官能基化できる合成手法を開発する。

Outline of Final Research Achievements

Lactomycins are isolated from Streptomyces sp. ACT232. In this study, we synthesized lactomycins with the aim of structure-activity relationship (SAR) studies. After the reaction of optically active glycidol with 3-butyn-1-ol derivatives as starting material, the terminal hydroxy group was protected with dimethylvinylsilyl chloride. The silyl group was used to construct trisubstituted olefin by an intramolecular hydrosilylation reaction. The silyl group was converted to iodine, and the C3-C13 carbon chain was constructed by Suzuki-Miyaura coupling reaction of the borane in the C3-C7 part. Subsequently, an intramolecular lactonization reaction was used to construct the C1-C13 part.

Academic Significance and Societal Importance of the Research Achievements

ラクトマイシン類はホスラクトマイシン類やロイストロダクシン類と類似の化学構造を持つため、タンパク質脱リン酸化酵素の一種であるプロテインホスファターゼ2A(PP2A)に対して阻害活性を示す可能性がある。また、ラクトマイシン類はホスラクトマイシン類よりも官能基が少ないため、簡便な合成法が開発できれば、様々な生物学的な研究や創薬研究へ展開しやすくなる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (2 results)

All 2023

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Synthesis of C1-C13 Intermediate of Lactomycin A2023

    • Author(s)
      Shunki Mamada and Narihito Ogawa
    • Organizer
      The 15th International Kyoto Conference on New Aspects of Organic Chemistry
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Lactomycin Aの中間体の合成研究2023

    • Author(s)
      儘田俊輝・石島正裕・小川熟人
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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