Synthesis, antimicrobial activity, pharmacophore analysis of some new 2-(substitutedphenyl/benzyl)-5-[(2-benzofuryl)carboxamido]benzoxazoles

Eur J Med Chem. 2008 Nov;43(11):2568-78. doi: 10.1016/j.ejmech.2007.12.019. Epub 2007 Dec 31.

Abstract

The synthesis and antimicrobial activity of a new series of 2-(substitutedphenyl/benzyl)-5-[(2-benzofuryl)carboxamido]benzoxazole derivatives 3-12 were described. The in vitro antimicrobial activity of the compounds was determined against some Gram-positive, Gram-negative bacteria and fungi and their drug-resistant isolates in comparison with standard drugs. Antimicrobial results indicated that the synthesized compounds possessed a broad spectrum of activity with MIC values 500-15.625 microg/ml. In the series, the most active compound against Candida krusei and Candida albicans isolate is 8 with MIC value 31.25 microg/ml. However, it is one dilution less potent than the compared fluconazole. Some of the screened compounds exhibit significant activity, having MIC value as 31.25 microg/ml in Pseudomonas aeruginosa having same activity as Rifampicin. Furthermore, considering the worth of developing new antibacterial agents against drug-resistant P. aeruginosa the present study explores the structure-activity relationship analysis of 2-(substitutedphenyl/benzyl)-5-[(2-benzofuryl)carboxamido]benzoxazoles using 3D-common features pharmacophore hypotheses approach.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amides / chemistry*
  • Anti-Bacterial Agents / chemical synthesis*
  • Anti-Bacterial Agents / chemistry
  • Anti-Bacterial Agents / pharmacology*
  • Benzofurans / chemistry*
  • Benzoxazoles / chemical synthesis*
  • Benzoxazoles / chemistry
  • Benzoxazoles / pharmacology*
  • Microbial Viability / drug effects
  • Molecular Structure
  • Structure-Activity Relationship

Substances

  • Amides
  • Anti-Bacterial Agents
  • Benzofurans
  • Benzoxazoles