Compounds having the formula ##STR1## wherein R.sub.1 is phenyl or cycloalkyl and the phenyl may have at least one substituent selected from the group consisting of lower alkyl, lower alkoxy, amino and nitro; R.sub.2 is hydrogen or lower alkyl; A is --CH.sub.2 O-- or --CH.sub.2 CH(O-lower alkyl)-; n is zero (0) or one (1); when R.sub.1 together with (A).sub.n is unsubstituted phenyl, R.sub.2 is lower alkyl; and R.sub.3 is hydrogen or lower alkoxy, have anti-ulcerous action.
具有以下
化学式的化合物 ##STR1## 其中R.sub.1是苯基或环烷基,苯基可能具有至少一种取代基,所选自较低的烷基,较低的烷氧基,
氨基和硝基的群;R.sub.2是氢或较低的烷基;A是--CH.sub.2 O--或--CH.sub.2 CH(O-较低烷基)-;n为零(0)或一(1);当R.sub.1与(A).sub.n一起是未取代的苯基时,R.sub.2是较低的烷基;R.sub.3是氢或较低的烷氧基,具有抗溃疡作用。