The first total synthesis and solution structure of a polypeptin, PE2, a cyclic lipopeptide with broad spectrum antibiotic activity

Org Biomol Chem. 2017 Aug 30;15(34):7173-7180. doi: 10.1039/c7ob01493g.

Abstract

The first total synthesis of a polypeptin, PE2, as well as its solution structure is reported. Synthesis in optically pure form confirms the proposed stereochemistry of the polypeptins at the 3-position on the 3-hydroxy depsipeptide moiety. We have also determined the NMR structure of PE2 in aqueous solution, showing it to form a stable ring conformation. The synthetic peptide shows anti-bacterial activity consistent with reports for naturally derived counterparts.

MeSH terms

  • Anti-Bacterial Agents / chemical synthesis*
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Bacteria / drug effects
  • Chemistry Techniques, Synthetic
  • Models, Molecular
  • Polymyxins / chemical synthesis*
  • Polymyxins / chemistry
  • Polymyxins / pharmacology*
  • Protein Conformation
  • Solutions

Substances

  • Anti-Bacterial Agents
  • Polymyxins
  • Solutions
  • polypeptin