A combined solid- and solution-phase approach provides convenient access to analogues of the calcium-dependent lipopeptide antibiotics

Org Biomol Chem. 2014 Feb 14;12(6):913-8. doi: 10.1039/c3ob42238k.

Abstract

The calcium-dependent lipopeptide antibiotics represent a promising new class of antimicrobials for use in combating drug-resistant bacteria. At present, daptomycin is the only such lipopeptide used clinically and displays potent antimicrobial activity against a number of pathogenic Gram-positive bacteria. Given the increasing need for new antibiotics, practical synthetic access to unnatural analogues of daptomycin and related antimicrobial lipopeptides is of value. We here report an efficient synthetic route combining solid- and solution-phase techniques that allows for the rapid preparation of daptomycin analogues. Using this approach, four such analogues, including two enantiomeric variants, were synthesized and their antimicrobial activities and hydrolytic stabilities evaluated.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Calcium / chemistry*
  • Daptomycin / analogs & derivatives
  • Daptomycin / chemistry
  • Daptomycin / pharmacology*
  • Dose-Response Relationship, Drug
  • Microbial Sensitivity Tests
  • Molecular Conformation
  • Solutions
  • Staphylococcus aureus / drug effects*
  • Structure-Activity Relationship

Substances

  • Anti-Bacterial Agents
  • Solutions
  • Daptomycin
  • Calcium