Scheme 1From: Synthesis and biological evaluation of some 4-aminoquinoline derivatives as potential antitubercular agentsReagents and conditions: (a) dry methanol, reflux 9–10 h; (b) methanol, NaOH, THF, RT; (c) thiosemicarbazide or semicarbazide hydrochloride, dry isopropyl alcohol, and glacial acetic acid, reflux 36 hBack to article page