Synthesis and antimicrobical evaluation of a novel class of 1,3,4-thiadiazole: Derivatives bearing 1,2,4-triazolo[1,5-a]pyrimidine moiety

New 1,2,4-triazolo[1,5-a]pyrimidine derivatives have been synthesized and evaluated for their antimicrobial activity. Most of them exhibited good activities and some could be comparable to positive controls.