The compound of the formula ##STR1## wherein R.sup.1 is hydrogen, fluorine, methoxy or trifluoromethyl, R.sup.2 is hydrogen or methyl, R.sup.3 is a C.sub.3-8 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.
该化合物的分子式为##STR1##其中R.sup.1为氢,
氟,甲氧基或三
氟甲基,R.sup.2为氢或甲基,R.sup.3为C.sub.3-8直链或支链烷基,n表示0或1,或其药理学上可接受的盐,新颖且可用于预防和治疗消化性溃疡(如胃溃疡,十二指肠溃疡)和胃炎。