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生理活性を有する微生物由来環状ペプトイドの簡便合成

Research Project

Project/Area Number 14750672
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Synthetic chemistry
Research InstitutionGunma University

Principal Investigator

山田 圭一  群馬大学, 工学部, 助手 (70323334)

Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2004: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2003: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2002: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywords生理活性ペプチド / 環状ペプチド / N-メチルアミノ酸 / シクロスポリン類 / 液相合成 / オーレオバシジン類 / コンホメーション解析
Research Abstract

CH_3I-Ag_2Oによるペプチド化合物のN-メチル化反応を利用した生理活性環状ペプトイドの簡便合成法の開発を目的とし、以下の研究を行った。
1)本年度は、免疫抑制活性を示す環状ペプトイド、シクロスポリンO(CsO,cyclo(D-Ala-MeLeu-MeLeu-MeVal-MeLeu-Nva-Sar-MeLeu-Val-MeLeu-Ala-))の最適合成条件の策定を行い、それをもとにシクロスポリンアナローグの合成研究を行った。前年度に確立したN-メチルアミノ酸(MeAA)残基が連続する難合成ペプチド(MeLeu-MeLeu-MeVal-MeLeu)の簡便合成法をBoc-MeLeu-MeLeu-MeVal-MeThr(Bzl)-OMeの合成に適用し、[MeThr^1]CsA(cyclo(D-Ala-MeLeu-MeLeu-MeVal-MeThr-Abu-Sar-MeLeu-Val-MeLeu-Ala-))の全合成を達成した。また、他の分子との複合体形成を目的として2位のNva残基をOrnに置換した[Orn^2]CsO(cyclo(D-Ala-MeLeu-MeLeu-MeVal-MeLeu-Orn-sar-MeLen-Val-MeLeu-Ala-)も合成した。
2)シクロスポリン類の最適合成条件を参考に、抗カビペプチドであるオーレオバシジン類の液相全合成を行った。まず、保護D-Ser誘導体を出発物質として重要な構成成分であるβ-hydroxy-L-Meval(Meval(OH))の新規合成法を確立した。次にMeAA含有ペプチドを合成する際に触媒量のHOAtを添加することで縮合効率が向上することを見出し、これを元にオーレオバシジンG(cyclo(allo-Ile-MeVal-Leu-MeVal-D-Hmb-Val-Phe-MePhe-Pro-)の液相全合成を達成した。

Report

(3 results)
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (10 results)

All 2005 2004 Other

All Journal Article (8 results) Publications (2 results)

  • [Journal Article] Synthesis, crystal structure and molecular conformation of N^α-Boc-L-leucyl-(Z)-(β-(3-pyridyl)-α,β-dehydroalanyl-L-leucine methyl ester2005

    • Author(s)
      K.Yamada, S.-s.Shinoda, H.Oku, R.Katakai
    • Journal Title

      The Journal of Peptide Research 65巻2号

      Pages: 167-174

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Single-step multiple N-methylation of hindered peptide - Solution-phase total synthesis of cyclosporine O2005

    • Author(s)
      K.Yamada, T.Endo, H.Oku, R.Katakai
    • Journal Title

      Peptide Science 2004 (Proceedings of the 1st Asia-Pacific International Peptide Symposium-41st Japanese Peptide Symposium) (印刷中)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Synthetic study of cyclic peptolide aureobasidin A2005

    • Author(s)
      R.Naito, K.Yamada, H.Oku, R.Katakai
    • Journal Title

      Peptide Science 2004 (Proceedings of the 1st Asia-Pacific International Peptide Symposium-41st Japanese Peptide Symposium) (印刷中)

    • NAID

      10014460783

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Facile Synthesis of N^α-protected-L-α,γ-diaminobutyric acids mediated by polymer-supported hypervalent iodine reagent in water2004

    • Author(s)
      K.Yamada, H.Urakawa, H.Oku, R.Katakai
    • Journal Title

      The Journal of Peptide Research 64巻2号

      Pages: 43-50

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A synthetic intermediate of enantiopure N-protected β-hydroxyvaline, (2R)-2-[N-(tert-butoxycarbonyl)amino]-3-methylbutane-1,3-diol2004

    • Author(s)
      H.Oku, R.Naito, K.Yamada, R.Katakai
    • Journal Title

      Acta Crystallographica, Section E 60巻12号

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A synthetic intermediate of a cyclic depsipeptide, aureobasidin A : tert-butoxy-carbonyl-L-allo-isoleucyl-N-methyl-L-valine (Boc-L-allo-Ile-L-MeVal-OH)2004

    • Author(s)
      H.Oku, R.Naito, K.Yamada, R.Katakai
    • Journal Title

      Acta Crystallographica, Section E 60巻12号

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Synthesis and conformation of polymyxin B partial peptides2004

    • Author(s)
      H.Urakawa, K.Yamada, H.Oku, R.Katakai
    • Journal Title

      Peptide Science 2003 (proceedings of the 40th Japanese Peptide Symposium)

      Pages: 363-366

    • NAID

      10012654399

    • Related Report
      2003 Annual Research Report
  • [Journal Article] Synthesis and conformation of linear and cyclic peptides containing (Z)-(β-3-pyridyl)-α,β-dehydroalanine residues2004

    • Author(s)
      K.Yamada, H.Oku, S.Shinoda, R.Katakai
    • Journal Title

      Peptide Science 2003 (proceedings of the 40th Japanese Peptide Symposium)

      Pages: 393-396

    • NAID

      10012654471

    • Related Report
      2003 Annual Research Report
  • [Publications] Yamada, K. et al.: "Stereochemistry of Protected Ornithine Side Chains of Gramicidin S Derivatives : X-ray Crystal Structure of the Bis-Boc-tetra-N-methyl Derivatives of Gramicidin S"J. Am. Chem. Soc.. 124巻. 12684-12688 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Endo, T., Oku, H., Yamada, K., Katakai, R.: "Solution-phase Synthesis and Structural Analysis of N-Desmethylated Cyclosporin O Analogs"Peptide Science 2002 (Proceedings of the 39^<th> Japanese Peptide Symposium). 383-386 (2003)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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