Novel indolizine derivatives of the general formula: ##STR1## and pharmaceutically acceptable acid addition salts thereof, wherein R represents a branched- or straight-chain alkyl radical having from 1 to 5 carbon atoms, a phenyl radical, a mono-fluoro-, mono-chloro- or mono-bromo-phenyl, a di-fluoro-, di-chloro- or di-bromo-phenyl radical, a methoxy-phenyl radical or a methyl-phenyl radical optionally substituted on the aromatic moiety by an atom of fluorine, chlorine or bromine and R.sub.1 and R.sub.2, which are different, represent a hydrogen atom or a group of the formula: ##STR2## wherein R.sub.3 and R.sub.4 which are identical, each represent a hydrogen atom or a methyl radical, Am represents a dimethylamino, diethylamino, di-n-propylamino, di-n-butylamino, morpholino, piperidino, pyrrolidino or 4-methyl-piperazino group and n is an integer in the range of from 2 to 6 inclusive. They are effective for treating certain pathological or otherwise abnormal conditions of the heart and more particularly sinus tachycardia. Certain of them are also useful in the treatment of angina pectoris and cardiac arrhythmia.
新型的
吲哚啉衍
生物具有一般式:##
STR1##及其药用可接受的酸盐,其中R代表具有1至5个
碳原子的支链或直链烷基基团,
苯基,单
氟,单
氯或单
溴苯基,二
氟,二
氯或二
溴苯基,
甲氧基苯基或
甲基苯基,其在芳香基上可选择地被
氟,
氯或
溴原子取代,而R.sub.1和R.sub.2,它们不同,代表
氢原子或具有以下式的基团:##
STR2##其中R.sub.3和R.sub.4相同,各代表
氢原子或
甲基基团,Am代表
二甲胺,
二乙胺,
二正丙胺,
二正丁胺,
吗啉,
哌啶,
吡咯啉或4-
甲基哌嗪基团,n为在2至6之间的整数。它们有效用于治疗心脏的某些病理性或其他异常情况,尤其是窦性心动过速。其中一些也可用于治疗心绞痛和心律失常。