Several members of a new family of non-sugar-type α-glycosidase inhibitors, bearing a 5-(p- toluenesulfonylamino) phthalimide moiety and various substituent at the N2 position, were synthesized and their activities were investigated. The newly synthesized compounds displayed different inhibition profile towards yeast α-glycosidase and rat intestinal α- glycosidase. Almost all the compounds had strong inhibitory activities against yeast α- ...