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Nucleophilic fluorination via single electron transfer and its application to preparation of PET tracers.

Research Project

Project/Area Number 21K07704
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52040:Radiological sciences-related
Research InstitutionNagasaki University

Principal Investigator

Mizuta Satoshi  長崎大学, 医歯薬学総合研究科(医学系), 助教 (50717618)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsフッ素化 / アジリジノン / DFT計算 / トリフルオロメチルチオ化 / PET / α-ブロモアミド / double inversion / α-ブロモエステル / カルボカチオン / 求核的フッ素化反応
Outline of Research at the Start

カルボニル化合物のα炭素へのフッ素化や[18F]標識化は、ポジトロン断層撮影(PET) における創薬開発に直結した魅力的な反応であるが、実用的な方法は未だない。本研究では、遷移金属、光応答型触媒による一電子移動型反応より、カルボカチオン中間体を形成させた、カルボニル化合物への求核的αフッ素化法を計画した。合成困難であった複雑な官能基を有する[18F]標識化ペプチドや抗体への利用が可能である。

Outline of Final Research Achievements

We developed a silver-promoted C-F bond formation method in α-bromoamides using AgF under mild conditions. This simple method enables access to tertiary, secondary, and primary alkyl fluorides involving biomolecular scaffolds. This transformation is available to primary and secondary amides, revealing a broad functional group tolerance. Kinetic experiments exhibited that the reaction rate increased in the order of 3°>2°>1°α-carbon. In addition, we found that the acidic amide proton has an important role in accelerating the reaction. Mechanistic studies suggested that the generation of an aziridinone intermediate undergoes subsequent nucleophilic addition to form the C-F bond with the stereospecificity (i.e. retention of configuration). We also demonstrated the DFT calculations to elucidate the mechanism and intermediacy of aziridinone. Examples of the reaction of α-bromoamides with AgSCF3 were conducted.

Academic Significance and Societal Importance of the Research Achievements

フッ化水素やアルカリ金属フッ化物をフッ素源とした求核的フッ素化反応(SN2プロセス)が、[18F]標識化法の主流となっていることから、嵩高い基質には適さず、基質適用範囲が狭い。ゆえに、本研究成果である嵩高い第2、3級アルキル基を有するカルボン酸、エステル・アミドといったα位への求核的フッ素化は、有機合成化学における課題を克服するに至った。本研究成果は、これまで合成が困難であったPET診断に利用できる[18F]標識カルボニル化合物を構築するための新たな手法となることから、学術的意義、社会的意義があるといえる。

Report

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

    (14 results)

All 2024 2023 2022 2021

All Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 4 results) Presentation (5 results) (of which Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Screening and synthesis of tetrazole derivatives that inhibit the growth of Cryptococcus species.2023

    • Author(s)
      Nakada, N., Miyazaki, T., Mizuta, S., Hirayama, T., Nakamichi, S., Takeda, K., Mukae, H., Kohno, S., and Tanaka, Y.
    • Journal Title

      ChemMedChem

      Volume: 18 Issue: 18

    • DOI

      10.1002/cmdc.202300157

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Antimalarial activities of benzothiazole analogs: A systematic review2023

    • Author(s)
      Tran Linh、Tu Vo Linh、Dadam Mohammad Najm、Aziz Jeza Muhamad Abdul、Duy Tran Le Dinh、Ahmed Hajer Hatim Hassan、Kwaah Patrick Amanning、Quoc Hoang Nghia、Van Dat Truong、Mizuta Satoshi、Hirayama Kenji、Huy Nguyen Tien
    • Journal Title

      Fundamental & Clinical Pharmacology

      Volume: - Issue: 3 Pages: 1-55

    • DOI

      10.1111/fcp.12974

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reaction Mechanism and Origin of Stereoselectivity in the Fluorination and Trifluoromethylthiolation of 2‐Bromoamides with AgF and AgSCF32023

    • Author(s)
      Mizuta Satoshi、Tabira Masahiro、Shichiro Naoki、Yamaguchi Tomoko、Ishihara Jun、Ishikawa Takeshi
    • Journal Title

      European Journal of Organic Chemistry

      Volume: 27 Issue: 3

    • DOI

      10.1002/ejoc.202301100

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Identification of novel chemical compounds targeting filovirus VP40-mediated particle production2022

    • Author(s)
      Urata Shuzo、Omotuyi Olaposi Idowu、Izumisawa Ayako、Ishikawa Takeshi、Mizuta Satoshi、Sakurai Yasuteru、Mizutani Tatsuaki、Ueda Hiroshi、Tanaka Yoshimasa、Yasuda Jiro
    • Journal Title

      Antiviral Research

      Volume: 199 Pages: 105267-105267

    • DOI

      10.1016/j.antiviral.2022.105267

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lead Optimization of Influenza Virus RNA Polymerase Inhibitors Targeting PA-PB1 Interaction2021

    • Author(s)
      Mizuta Satoshi、Otaki Hiroki、Ishikawa Takeshi、Makau Juliann Nzembi、Yamaguchi Tomoko、Fujimoto Takuya、Takakura Nobuyuki、Sakauchi Nobuki、Kitamura Shuji、Nono Hikaru、Nishi Ryota、Tanaka Yoshimasa、Takeda Kohsuke、Nishida Noriyuki、Watanabe Ken
    • Journal Title

      Journal of Medicinal Chemistry

      Volume: 65 Issue: 1 Pages: 369-385

    • DOI

      10.1021/acs.jmedchem.1c01527

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Trifluoromethylthiolation of Hindered α-Bromoamides with Nucleophilic Trifluoromethylthiolating Reagents2021

    • Author(s)
      Mizuta Satoshi、Kitamura Kanami、Morii Yuki、Ishihara Jun、Yamaguchi Tomoko、Ishikawa Takeshi
    • Journal Title

      The Journal of Organic Chemistry

      Volume: 86 Issue: 24 Pages: 18017-18029

    • DOI

      10.1021/acs.joc.1c02316

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 2D-quantitative structure?activity relationships model using PLS method for anti-malarial activities of anti-haemozoin compounds2021

    • Author(s)
      Nguyen Phuong Thuy Viet、Van Dat Truong、Mizukami Shusaku、Nguyen Duy Le Hoang、Mosaddeque Farhana、Kim Son Ngoc、Nguyen Duy Hoang Bao、Dinh Oanh Thi、Vo Tu Linh、Nguyen Giang Le Tra、Quoc Duong Cuong、Mizuta Satoshi、Tam Dao Ngoc Hien、Truong M. Phuong、Huy Nguyen Tien、Hirayama Kenji
    • Journal Title

      Malaria Journal

      Volume: 20 Issue: 1 Pages: 264-264

    • DOI

      10.1186/s12936-021-03775-2

    • NAID

      120007168852

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Silver‐Promoted Fluorination Reactions of α‐Bromoamides2021

    • Author(s)
      Mizuta Satoshi、Kitamura Kanami、Kitagawa Ayako、Yamaguchi Tomoko、Ishikawa Takeshi
    • Journal Title

      Chemistry - A European Journal

      Volume: 27 Issue: 19 Pages: 5930-5935

    • DOI

      10.1002/chem.202004769

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] ハロゲン交換から考察されるEt3N・3HFのカルボカチオンへの反応性2024

    • Author(s)
      水田賢志、石川岳志
    • Organizer
      日本薬学会第144年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] インフルエンザRNAポリメラーゼ蛋白質間相互作用を標的とする創薬研究2022

    • Author(s)
      水田賢志
    • Organizer
      富山大学和漢医薬学総合研究所・長崎大学熱帯医学研究所第11回交流セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] キノリン誘導体における抗マラリア薬および抗インフルエンザ薬の開発研究2022

    • Author(s)
      水田賢志
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 新時代の錬金術:生命現象のメカニズムを読み解く機能性分子の開発2021

    • Author(s)
      水田賢志
    • Organizer
      CHODAI共創研究発表会
    • Related Report
      2021 Research-status Report
  • [Presentation] ストレス誘起早期老化を検出する蛍光プローブの開発2021

    • Author(s)
      水田賢志
    • Organizer
      第15回日本分子イメージング学会
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] antimarial drugs2021

    • Inventor(s)
      水田賢志、平山謙二、水上修作、F. モサデンコ、G.フイ
    • Industrial Property Rights Holder
      水田賢志、平山謙二、水上修作、F. モサデンコ、G.フイ
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Acquisition Date
      2021
    • Related Report
      2021 Research-status Report

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

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