| 摘要 |
3-Z-5-Q-1,6-naphthyridine-2(1H)-ones of formula (1), their acid addn. and cationic salts are prepared. In (I), Z is H, CN or carboxy; Q is 2(or 3)-furanyl, 2(or 3)-thienyl or 4(or 3)pyridinyl. (I) are prepd. by reacting a cpd. of formula (II)[R1= R2= C1-4 alkyl with formamidine, ammonia or its salt. (I) are useful as cardiotonic agents for increasing cardiac contractility.
|
