Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen, methoxy or methylthio, R.sub.2 is hydrogen or methoxy, n is 2 or 3, R.sub.3 is hydrogen or methyl, and R.sub.4 and R.sub.5, which may be identical to or different from each other, are each hydrogen or methoxy, and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as the salts are useful as hypotensives, sedatives, antiarrhythmics and bradycardiacs.
式为##STR1##的化合物,其中R.sub.1是氢、卤素、甲氧基或甲
硫基,R.sub.2是氢或甲氧基,n为2或3,R.sub.3是氢或甲基,R.sub.4和R.sub.5,它们可能相同也可能不同,分别是氢或甲氧基,以及其非毒性、药理学上可接受的酸盐;这些化合物以及盐可用作降压药、镇静剂、
抗心律失常药和心动过缓药。