Anti-methicillin resistant Staphylococcus aureus (MRSA) compounds isolated from Laurus nobilis

Biol Pharm Bull. 2008 Sep;31(9):1794-7. doi: 10.1248/bpb.31.1794.

Abstract

We found that an extract from Laurus nobilis L. (Lauraceae) leaves showed antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA). We purified two flavonoids as the effective compounds and identified them as kaempferol 3-O-alpha-L-(2'',4''-di-E-p-coumaroyl)-rhamnoside (C2) and kaempferol 3-O-alpha-L-(2''-Z-p-coumaroyl-4''-E-p-coumaroyl)-rhamnoside (C3). Both compounds showed strong antibacterial activity not only against MRSA but also against vancomycin-resistant enterococci (VRE). There was low or no antibacterial activity of C2 and C3 for Streptococcus pneumoniae, Pseudomonas aeruginosa and Serratia marcescens.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / pharmacology
  • Bacteria / drug effects
  • Kaempferols / chemistry
  • Kaempferols / pharmacology
  • Laurus / chemistry*
  • Methicillin Resistance / drug effects*
  • Microbial Sensitivity Tests
  • Plant Extracts / chemistry
  • Plant Extracts / pharmacology
  • Plant Leaves / chemistry
  • Staphylococcus aureus / drug effects*
  • Structure-Activity Relationship
  • Vancomycin Resistance / drug effects

Substances

  • Anti-Bacterial Agents
  • Kaempferols
  • Plant Extracts
  • kaempferol