A compound of the formula: ##STR1## wherein R.sub.1 represents a vanilyl, napthyl, pyridyl or .alpha.-tocopheryl group, or a group of the formula, ##STR2## wherein R.sub.2 represents a hydrogen atom, a lower alkoxy, formyl, lower alkanoyl or phenyl group, or a group of the formula --(CH.sub.2).sub.n COOR.sub.3, wherein R.sub.3 represents a hydrogen atom, a lower alkyl, phenyl, benzyl, anisyl or lower alkoxycarbonylmethyl group, and n represents an integer of 0 to 2, or a pharmaceutically acceptable salt thereof is effective for use as an anti-ulcer agent.
该化合物的
化学式为:##STR1## 其中R.sub.1代表vanilyl,napthyl,pyridyl或.alpha.-tocopheryl基团,或者是式子##STR2##中的一种基团,其中R.sub.2代表氢原子,较低的烷氧基,甲酰基,较低的烷酰基或苯基,或者是式子--(CH.sub.2).sub.n COOR.sub.3中的一种基团,其中R.sub.3代表氢原子,较低的烷基,苯基,苄基,苯氧基甲酰基或较低的烷氧羰基甲基基团,n代表0到2之间的整数,或其药学上可接受的盐,可用作抗溃疡剂。