Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

ANTIBACTERIAL ACTIVITY OF SOME NOVEL 3,4-HETERO ANNELATED QUINOLIN-2-ONES

A. JAYASHREE GOPAL REDDY AND M. DARBARWAR

Abstract

A series of novel oxothienoquinolines, triazolothiadiazepinoquinolinones, quinobenzoxazepinones, quinobenzothiazepinones, and quinobenzothiazinones are synthesized from 3,4-disubstituted quinolin-2-ones and screened for antibacterial activity against Staphylococcus aureus and Escherichia coli. Among these, 1-ethyl-4-chloro-3-cyanoquinolin-2-one, 1-methyl-4-chloro-3-cyanoquinolin-2-one, 3-amino- 4,5-dihydro-5-ethyl-4-oxothieno[3,2-c]quinolin-2-carboxylicacid, 5-ethylquino [4,3b][1,5] benzoxazepin-6(5H) one exhibited promising antibacterial activity against Staphylococcus aureus.