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Chemistry of Amide Nitrogen Modification by Fluoro Substituents

Research Project

Project/Area Number 21K06483
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 InstitutionShowa Pharmaceutical University

Principal Investigator

YAMASAKI RYU  昭和薬科大学, 薬学部, 准教授 (90453844)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsアミド / フッ素 / 立体構造 / 置換基効果 / アミド結合 / フルオロカーボン
Outline of Research at the Start

アミド結合は多くの医薬品やペプチドの構造に見られる、医薬化学において大変重要な構造単位であり、その構造制御はアミド結合をもつ医薬品において非常に重要な意義をもつ。しかし、アミド化合物の立体構造制御は未だ未知の領域が多く、達成されたとは言い難い。
本研究では、これまでに自分の合成した置換アミド化合物をもとに、特異な性質をもつフルオロカーボンなどフッ素含有置換基を導入したアミド化合物合成法の開発ならびに立体構造特性を明らかとする。

Outline of Final Research Achievements

In this study, synthetic methods for compounds bearing fluorine substituents (fluorocarbons) into amide compounds was established and their structural properties were analyzed. Specifically, synthetic methods for each of the following compounds was developed; (1) amide compounds with multiple bonds as scaffolds for introduction of fluorine, (2) amide compounds with pentafluorophenyl rings, (3) amides with monofluoromethyl groups, (4) amides with difluoromethyl groups, and (5) amide compounds with monofluoromethyl groups. Then, their respective structural characteristics were analyzed in detail using X-ray crystallography, NMR, and DFT calculations. As a result, the electronic repulsion and electron-withdrawing nature of fluorine atoms were found to be significantly influencing the conformation and bond angles of the amide.

Academic Significance and Societal Importance of the Research Achievements

脂溶性向上や代謝安定性などの物性向上を目的に、直近10年で承認された医薬品の2割以上が1つ以上のフッ素原子をもつ。一方でフッ素置換基をアミド化合物に導入した場合の構造特性はそれまで系統的に検討されていなかった。本研究はフッ素をもつアミド化合物の合成法を確立し、その構造特性を明らかとしたことで、医薬化学における化合物デザインに貢献するものと考える。また本研究の遂行においてアミドに多重結合をもつ化合物の構造特性、昇華によりon-off型でスイッチング可能な分子、芳香族求核置換や光によるフッ素芳香族特有の変換反応等、今後の多様な研究展開に繋がる知見が得られた。

Report

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

    (9 results)

All 2023 2022

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (5 results) (of which Invited: 1 results)

  • [Journal Article] Structures and Reactivities of N-Alkenyl-Substituted Anilides: The “Magic” Methyl Effect on Alkene2023

    • Author(s)
      Yamasaki Ryu、Ono Mariko、Morita Kento、Ito Ai、Fukuda Kazuo、Okamoto Iwao
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 88 Issue: 20 Pages: 14487-14493

    • DOI

      10.1021/acs.joc.3c01487

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure and Additive-free Transamidation of Planar N-Cyano Amides2023

    • Author(s)
      Yamasaki Ryu、Okada Yuko、Iizumi Hiromi、Ito Ai、Fukuda Kazuo、Okamoto Iwao
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 88 Issue: 9 Pages: 5704-5712

    • DOI

      10.1021/acs.joc.3c00172

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conformational Switch of Benzanilide Derivative Induced by Acid; Effect of Pentafluorobenzoyl Group2022

    • Author(s)
      Yamasaki Ryu、Harada Misuzu、Nagata Rino、Ito Ai、Fukuda Kazuo、Okamoto Iwao
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 87 Issue: 13 Pages: 8469-8479

    • DOI

      10.1021/acs.joc.2c00593

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reversible on/off conformational switching of pentafluorobenzoyl amide triggered by acid vapor and sublimation2022

    • Author(s)
      Yamasaki Ryu、Harada Misuzu、Ito Ai、Fukuda Kazuo、Matsumoto Shota、Karasawa Satoru、Okamoto Iwao
    • Journal Title

      CrystEngComm

      Volume: 24 Issue: 35 Pages: 6226-6231

    • DOI

      10.1039/d2ce00972b

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] N-アルケニルアセトアニリドへのマジックメチル効果2023

    • Author(s)
      山崎龍
    • Organizer
      第33回基礎有機化学討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] アミド窒素への多重結合・フッ素修飾の化学;構造・反応性への影響2023

    • Author(s)
      山崎龍
    • Organizer
      第67回日本薬学会関東支部大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 酸添加と昇華によるペンタフルオロベンゾイル基をもつアミド化合物のオン-オフ型コンフォメーションスイッチング2023

    • Author(s)
      山崎龍、原田みすず、伊藤愛、福田和男、松本祥汰、唐澤悟、岡本巌
    • Organizer
      日本薬学会第143年会
    • Related Report
      2022 Research-status Report
  • [Presentation] N-トリフルオロ、ジフルオロメチル化されたアミド化合物の合成と立体構造特性2022

    • Author(s)
      山﨑龍、野坂勇太、田代愛実、永井愛実,、伊藤愛、岡本巌
    • Organizer
      第48回反応と合成の進歩シンポ
    • Related Report
      2022 Research-status Report
  • [Presentation] N-シアノ化によるアミドの活性化–立体構造特性とトランスアミド化反応2022

    • Author(s)
      山﨑龍、岡田柚子、伊藤愛、福田和男、岡本巌
    • Organizer
      第32回基礎有機化学討論会
    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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