The invention belongs to the field of biological 
medicine and particularly relates to 1,3,4-selenadiazole compound with 
drug activity. As a few types of heterocyclic 
selenium exist and BPTES (thiadiazole compounds) has a strong 
tumor growth suppressing function, a novel synthesizing method is utilized to synthesize multi functional groups substitutional selenadiazole compound, tests verify that the compound has a 
tumor inhibition effect, an antioxidation effect and a 
cell protection function; selenadiazole can serve as 
bioisostere of thiadiazole to substitute; presently, many drugs contain thiadiazole, so that synthesizing selenadiazole derivative with multi functional groups and further optimizing the activity of the medicinal thiadiazole compound have significance in aspects of new 
medicine development and application and the like.