Novel isoquinoline derivatives represented by formula (I):
wherein R¹ , R², R³, R⁴, R⁵, X¹ and X² are as defined in the specification, have an anti-arrhythmic activity and bradycardiac activity and are effective for the treatment of arrhythmia, myocardiac infarction or angina pectoris.
由式 (I) 代表的新型
异喹啉衍
生物:
其中 R¹、R²、R³、R⁴、R⁵、X¹ 和 X² 如说明书中所定义,具有抗心律失常活性和心动过缓活性,可有效治疗心律失常、心肌梗塞或心绞痛。