A compound represented by the formula wherein R1 and R2 are the same or different and each is an optionally substituted hydrocarbon group or an optionally substituted hydroxy group; R3 is an optionally substituted aromatic group; R4 is an optionally substituted amino group; L is a divalent chain hydrocarbon group; Q is a bond or a divalent chain hydrocarbon group; and X is a hydrogen atom, a cyano group, a nitro group, an acyl group, a substituted hydroxy group, an optionally substituted thiol group, an optionally substituted amino group or an optionally substituted cyclic group; provided that when X is an ethoxycarbonyl group, then Q is a divalent chain hydrocarbon group. The compound has a peptidase inhibitory action, is useful as an agent for the prophylaxis or treatment of diabetes and the like, and is superior in efficacy, duration of action, specificity, lower toxicity and the like.
该化合物的
化学式表示为其中R1和R2相同或不同,每个都是可选择取代的
碳氢基团或可选择取代的羟基团;R3是可选择取代的芳香基团;R4是可选择取代的
氨基团;L是二价链状
碳氢基团;Q是键或二价链状
碳氢基团;X是
氢原子、
氰基、硝基、酰基、取代的羟基团、可选择取代的
硫醇基团、可选择取代的
氨基团或可选择取代的环状基团;但当X是乙
氧羰基团时,Q为二价链状
碳氢基团。该化合物具有肽酶抑制作用,可用作糖尿病等疾病的预防或治疗药物,并在功效、作用持续时间、特异性、毒性较低等方面具有优越性。