Abstract
Water-soluble 1-(3,5-di-tert-butyl-4-hydroxybenzyl)isatin 3-acylhydrazones containing an acyclic, bicyclic, or pyridinium quaternary ammonium center in the acyl moiety showed antibacterial activity against some gram-positive bacteria. Derivatives with a 2,3-dimethylpyridine or diazabicyclooctane fragment exhibited the highest activity against S. aureus and B. cereus as expressed by the minimum bactericidal concentration and were 4 times more active than chloramphenicol.
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