Gold(I) complexes of N-heterocyclic carbene ligands containing benzimidazole: synthesis and antimicrobial activity

Molecules. 2010 Mar 29;15(4):2203-10. doi: 10.3390/molecules15042203.

Abstract

Gold(I) N-heterocyclic carbene (NHC) complexes were obtained in good yields from the corresponding silver complexes by treatment with [AuCl(PPh3)] following the commonly used silver carbene transfer route. The silver complexes were synthesized from the benzimidazolium halide salts by the in situ reactions with Ag2O in dichloromethane as a solvent at room temperature. All gold complexes have been characterized by 1H-NMR, 13C-NMR and IR spectroscopy and elemental analysis. Au-NHC complexes were evaluated for their in vitro antimicrobial activity against a variety of Gram-positive and Gram-negative bacteria and fungal species.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / chemical synthesis
  • Anti-Bacterial Agents / chemistry*
  • Anti-Bacterial Agents / pharmacology
  • Antifungal Agents / chemical synthesis
  • Antifungal Agents / chemistry*
  • Antifungal Agents / pharmacology
  • Benzimidazoles / chemical synthesis
  • Benzimidazoles / chemistry*
  • Benzimidazoles / pharmacology
  • Candida albicans / drug effects
  • Candida tropicalis / drug effects
  • Enterococcus faecalis / drug effects
  • Escherichia coli / drug effects
  • Gold / chemistry*
  • Ligands
  • Magnetic Resonance Spectroscopy
  • Methane / analogs & derivatives*
  • Methane / chemistry
  • Pseudomonas aeruginosa / drug effects
  • Spectrophotometry, Infrared
  • Staphylococcus aureus / drug effects

Substances

  • Anti-Bacterial Agents
  • Antifungal Agents
  • Benzimidazoles
  • Ligands
  • carbene
  • Gold
  • Methane