Synthesis and biological evaluation of 2-aminobenzamide derivatives as antimicrobial agents: opening/closing pharmacophore site

Int J Mol Sci. 2014 Mar 21;15(3):5115-27. doi: 10.3390/ijms15035115.

Abstract

A series of new 2-aminobenzamide derivatives (1-10) has been synthesized in good to excellent yields by adopting both conventional and/or a time-efficient microwave assisted methodologies starting from isatoic anhydride (ISA) and characterized on the basis of their physical, spectral and microanalytical data. Selected compounds of this series were then tested against various bacterial (Bacillus subtilis (RCMB 000107) and Staphylococcus aureus (RCMB 000106). Pseudomonas aeruginosa (RCMB 000102) and Escherichia coli (RCMB 000103) and fungal strains (Saccharomyces cerevisiae (RCMB 006002), Aspergillus fumigatus (RCMB 002003) and Candida albicans (RCMB 005002) to explore their potential as antimicrobial agents. Compound 5 was found to be the most active compound among those tested, which showed excellent antifungal activity against Aspergillus fumigatus (RCMB 002003) more potent than standard Clotrimazole, and moderate to good antibacterial and antifungal activity against most of the other strains of bacteria and fungi. Furthermore, potential pharmacophore sites were identified and their activity was related with the structures in the solution.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Infective Agents / chemical synthesis*
  • Anti-Infective Agents / chemistry
  • Anti-Infective Agents / pharmacology*
  • Aspergillus fumigatus / drug effects
  • Aspergillus fumigatus / growth & development
  • Bacillus subtilis / drug effects
  • Bacillus subtilis / growth & development
  • Candida albicans / drug effects
  • Candida albicans / growth & development
  • Crystallization
  • Escherichia coli / drug effects
  • Escherichia coli / growth & development
  • Microbial Sensitivity Tests
  • Models, Chemical
  • Molecular Structure
  • Pseudomonas aeruginosa / drug effects
  • Pseudomonas aeruginosa / growth & development
  • Saccharomyces cerevisiae / drug effects
  • Saccharomyces cerevisiae / growth & development
  • Staphylococcus aureus / drug effects
  • Staphylococcus aureus / growth & development
  • Structure-Activity Relationship
  • ortho-Aminobenzoates / chemical synthesis*
  • ortho-Aminobenzoates / chemistry
  • ortho-Aminobenzoates / pharmacology*

Substances

  • Anti-Infective Agents
  • ortho-Aminobenzoates
  • anthranilamide