Potent antimicrobial activity of 3-(4,5-diaryl-1H-imidazol-2-yl)-1H-indole derivatives against methicillin-resistant Staphylococcus aureus.

A new series of antimicrobial derivatives [3-(4,5-diaryl-1H-imidazol-2-yl)-1H-indole)] have been synthesized with potent activity against strains of Staphylococcus aureus, including methicillin-resistant strains (MRSA). Compound 17 [3-(4,5-bis(4-fluorophenyl)-1H-imidazol-2-yl)-5-bromo-1H-indole], the most active derivative was shown to inhibit the growth of all Gram-positive strains tested, including vancomycin resistant Enterococcus faecalis and Enterococcus faecium with no activity against Gram-negative bacteria.