Disclosed herein are 1- or 2-thio, thiomethylene, and sulfonylnaphthalene derivatives of formulas I and II ##STR1## or a pharmaceutically acceptable catonic salt thereof, wherein n is 0 or 1 R.sub.5 is hydrogen, bromo, chloro, trifluoromethyl or difluoroethyl; R.sub.6 is hydrogen, hydroxy, methoxy or ethoxy; and R.sub.7 is hydrogen or R.sub.7 and R.sub.6 are both methyl or ethyl carbonate, provided that, when S(O).sub.2 is in the 2 position of the naphthalene ring, R.sub.5, R.sub.6 and R.sub.7 are each hydrogen. The disclosed compounds possess blood-glucose lowering actions and are useful in the treatment of diabetes mellitus.
本文披露了公式I和II的1-或2-
硫、
硫亚甲基和磺酰基
萘衍
生物,或其药用可接受的阳离子盐,其中n为0或1,R.sub.5为氢、
溴、
氯、三
氟甲基或二
氟乙基;R.sub.6为氢、羟基、甲氧基或乙氧基;R.sub.7为氢或R.sub.7和R.sub.6都是甲基或乙基
碳酸酯,但当S(O).sub.2在
萘环的2位置时,R.sub.5、R.sub.6和R.sub.7都是氢。所披露的化合物具有降低血糖作用,并可用于治疗糖尿病。