Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently --H or lower alkoxy; R.sub.3 and R.sub.4 are each independently lower alkyl; and R.sub.5 and R.sub.6 are each --OCH.sub.3, or together form --OCH.sub.2 O-- or --OCH.sub.2 CH.sub.2 O-- and pharmaceutically acceptable acid addition salts thereof are calcium channel blockers useful for treating cardiovascular disorders including angina, hypertension and congestive heart failure.
该分子式的化合物为 ##STR1##,其中R.sub.1和R.sub.2各自独立地为--H或低烷氧基;R.sub.3和R.sub.4各自独立地为低烷基;R.sub.5和R.sub.6各自为--OCH.sub.3,或一起形成--OCH.sub.2 O--或--OCH.sub.2 CH.sub.2 O--,其药物可接受的酸盐加成物为
钙通道阻滞剂,可用于治疗心血管疾病,包括心绞痛、高血压和充血性心力衰竭。