Synthesis of carbapyochelins via diastereoselective azidation of 5-(ethoxycarbonyl)methylproline derivatives

J Org Chem. 2008 Sep 19;73(18):7420-3. doi: 10.1021/jo801294p. Epub 2008 Aug 13.

Abstract

Two configurationally stable carbon-based analogues of pyochelin have been prepared from Boc-pyroglutamic acid-tert-butyl ester in 11 and 13 steps. Introduction of the amino group was achieved by a highly diastereoselective electrophilic azidation reaction to afford novel bis-alpha-amino acid proline derivatives.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Azides / chemistry*
  • Crystallography, X-Ray
  • Models, Molecular
  • Molecular Conformation
  • Phenols / chemical synthesis*
  • Phenols / chemistry
  • Proline / analogs & derivatives*
  • Proline / chemistry*
  • Stereoisomerism
  • Thiazoles / chemical synthesis*
  • Thiazoles / chemistry

Substances

  • 5-(ethoxycarbonyl)methylproline
  • Azides
  • Phenols
  • Thiazoles
  • pyochelin
  • Proline