Introduction. The chemistry of five membered heterocycles containing nitrogen and sulfur has gained importance mainly due to their varied physiological action and diverse physico- chemical properties. The triazole nucleus has a broad spec- trum of antimicrobial activity [1]. In fact molecules having both triazole and thiadiazine units possess antiparasite activity [2]. Apart from this triazolo-thiadiazines/ thiadia- zoles possess antimicrobial properties [3]. Besides, 2-mer- ...