Synthesis and evaluation of substituted quinazolone derivatives for antibacterial, antifungal, and antiacetylcholinesterase activities.

The synthesis of new 6-bromo- and 6,8-dibromo-2-[N-(2'-alkyl-1',3',4'-thiadizol-5'-yl)carbamoylmethylthio] -3-aryl/cyclohexyl-4-(3H)-quinazolones is described. The synthesis derivatives were screened for antibacterial, antifungal, and antiacetylcholinesterase activities in vitro. Most of the compounds exhibited significant biological activity. The relation between their biological activity and chemical structure was studied.