Compounds of the formula ##STR1## wherein R.sub.1 is phenyl substituted with 1 to 3 substituents selected from the group consisting of halogen and lower alkoxy; R.sub.2 is hydrogen, lower alkyl, lower alkanoyl, lower cycloalkanoyl, ##STR2## R.sub.3 and R.sub.4 are independently lower alkyl, phenyl lower alkyl or together form a piperidine or pyrrolidine ring; n is 2 to 4; m is 1 to 2; and pharmaceutically acceptable acid addition salts thereof are described. The compounds of formula I are active as calcium channel blockers and accordingly, are useful as agents for treating ischemia.
本发明涉及公式##STR1##的化合物,其中R.sub.1是苯,其上取代有1至3个卤素和较低的烷氧基;R.sub.2是氢,较低的烷基,较低的酰基,较低的环状酰基,##STR2## R.sub.3和R.sub.4分别是较低的烷基,苯基较低的烷基或共同形成
哌啶或
吡咯烷环;n为2至4;m为1至2;以及其药学上可接受的酸盐。公式I的化合物作为
钙通道阻滞剂具有活性,因此可用作治疗缺血的药物。