Synlett 2017; 28(15): 1944-1949
DOI: 10.1055/s-0036-1589055
cluster
© Georg Thieme Verlag Stuttgart · New York

Cysteine-Free Intramolecular Ligation of N-Sulfanylethylanilide Peptide Using 4-Mercaptobenzylphosphonic Acid: Synthesis of Cyclic Peptide Trichamide

Autoren

  • Keisuke Aihara

    a   Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan   eMail: aotaka@tokushima-u.ac.jp
  • Tsubasa Inokuma

    a   Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan   eMail: aotaka@tokushima-u.ac.jp
  • Takahisa Jichu

    a   Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan   eMail: aotaka@tokushima-u.ac.jp
  • Zhenjian Lin

    b   Department of Medicinal Chemistry, University of Utah, Salt Lake City UT 84112, USA
  • Feixue Fu

    c   Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA
  • Kosuke Yamaoka

    a   Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan   eMail: aotaka@tokushima-u.ac.jp
  • Akira Shigenaga

    a   Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan   eMail: aotaka@tokushima-u.ac.jp
  • David A. Hutchins

    c   Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA
  • Eric W. Schmidt

    b   Department of Medicinal Chemistry, University of Utah, Salt Lake City UT 84112, USA
  • Akira Otaka*

    a   Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima 770-8505, Japan   eMail: aotaka@tokushima-u.ac.jp

This research was supported in part by a Grant-in-Aid for Scientific Research (KAKENHI). K.A. is grateful for a JSPS fellowship (14J07568). T.J. is grateful for SUNBOR SCHOLARSHIP.
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Publikationsverlauf

Received: 24. April 2017

Accepted after revision: 24. Mai 2017

Publikationsdatum:
06. Juli 2017 (online)


Graphical Abstract

Published as part of the Cluster Recent Advances in Protein and Peptide Synthesis

Abstract

An N-sulfanylethylanilide (SEAlide)-based ligation was developed for the preparation of trichamide, a thiazole-containing cyclic peptide isolated from bloom-forming cyanobacterium Trichodesmium erythraeum. In this cysteine-free ligation, 4-mercaptobenzylphosphonic acid (MBPA) functions as a dual promoter both for the N–S acyl-transfer-mediated activation of the SEAlide unit and for subsequent ligation. Furthermore, we established a high-yielding route to enantiomerically pure thiazole amino acids using a one-pot Hantzsch process.

Supporting Information