Synthesis and Antimicrobial Evaluation of Novel Oxa(thia)diazolylquinolines and Oxa(thia)diazepino[7,6‐b] quinolines

Abstract
Three novel series of quinoline derivatives have been prepared by cyclization of the intermediate 3[(substituted)thiocarbamoyl-hydrazonomethyl]-2-chloroquinolines and 3-aroylhydrazonomethyl-2-chloroquinolines: 3-(3-Acetyl-5-(substituted)-2,3-dihydro-1,3, 4-oxa(thia)diazol-2-yl)-2-chloroquinolines (4; 5), 3-(5-(subtituted)-1,3,4-oxa(thia)diazol-2-yl)-2-chloroquinolines (6; 7), and 2-(substituted)-1,3,4-oxa(thia)diazepino[7,6-b]quinolines (8; 9). The antimicrobial activity of these compounds was studied.