NOVEL ISOQUINOLINE DERIVATIVES OR SALTS THEREOF

摘要

The compound of the present invention relates to a drug, particularly to a novel isoquinoline derivative or its salt having an If current inhibitory effect without serious side effects such as convulsion and also to a drug, particularly a cardiac rate lowering agent, containing the compound as the active ingredient. Namely, the compound has a current If inhibitory effect and is particularly useful as a cardiac rate lowering agent for preventing ischemic heart diseases such as angina and cardiac infarction and circulatory diseases such as congestive cardiac insufficiency and arrhythmia (supraventricular arrhythmia). The present invention relates to dialkoxy-1,2,3,4-tetrahydroquinoline-2-carbonylpiperidino-3,4-dialkoxy propaneanilide derivatives, etc.