Compounds of the formula I
wherein the A ring represents
R, and R2 are H or CH3; M is a cyclic amino group, are endowed with antiulcer, antisecretory, antimuscarinic and spasmolytic activity.
式 I 的化合物
其中 A 环代表
R 和 R2 为 H 或
CH3;M 为环状
氨基,具有抗溃疡、抗分泌、抗心绞痛和解痉活性。