The compound of the formula
wherein R1 is hydrogen, fluorine, methoxy or trifluoromethyl, R2 is hydrogen or methyl, R3 is a C3-8 straight-chain or branched alkyl, and n denotes 0 or 1, or their pharmacologically acceptable salts is novel and useful for prophylaxis and therapy of digestive ulcers (e.g. gastric ulcer, duodenal ulcer) and gastritis.
式中 R1 为氢、
氟、甲氧基或三
氟甲基,R2 为氢或甲基,R3 为 C3-8 直链或支链烷基,n 表示 0 或 1 的化合物或它们的药理上可接受的盐是新型的,可用于预防和治疗消化道溃疡(如胃溃疡、十二指肠溃疡)和胃炎。