Antimicrobial activity of imidazo[1,5-a]quinoxaline derivatives with pyridinium moiety

The bacteriostatic activity of a number of various newly synthesized 1-(pyridin-3-yl)imidazo[1,5-a]quinoxalin-4-ones (2a-f) and their N-alkyl-pyridinium salts (3a-o, 4a-d, 5, 6) have been investigated.