申请人:Chinoin Pharmaceutical and Chemical Works Ltd.
公开号:US03979397A1
公开(公告)日:1976-09-07
The invention relates to new thiazoloisoquinolines of the general formula (I), or salts thereof, ##SPC1## Wherein A stands for a group of the formula ##EQU1## R.sup.1 stands for hydrogen, hydroxy, alkoxy or aralkoxy, R.sup.2 stands for hydrogen, hydroxy, alkoxy or aralkoxy, R.sup.3 stands for hydrogen, alkyl, aryl, nitro, carboxy or a carboxy derivative, and Y stands for oxygen, sulfur, or a group of the formula =N--R.sup.4, wherein R.sup.4 stands for hydrogen, alkyl, aryl, acyl, alkylsulfonyl or arylsulfonyl. These new compounds can be used in practice as heart medicines or respiratory analeptics. The new compounds according to the invention can be prepared as follows: an isoquinoline of the general formula (II) or a salt thereof ##SPC2## Wherein R.sup.5 stands for hydrogen, hydroxy, alkoxy or aralkoxy, R.sup.6 stands for hydrogen, hydroxy, alkoxy or aralkoxy, R.sup.7 stands for hydrogen, alkyl, aryl, carboxy or a carboxy derivative, and X stands for hydrogen, halogen or mercapto, Is reacted with a reactive carbonic acid derivative, provided that at least one of the reactants contains a sulfur atom, and/or an isoquinoline of the general formula (III) ##SPC3## wherein R.sup.5, R.sup.6 and R.sup.7 each have the same meanings as defined above, and Y' stands for oxygen, sulfur or a group of the formula =N--R.sup. 8, wherein R.sup.8 represents hydrogen, alkyl, aryl, acyl, arylsulfonyl or alkylsulfonyl, is oxidized, and/or substituents A', R.sup.5, R.sup.6 and R.sup.7 of the obtained thiazoloisoquinoline of the general formula (IA) ##SPC4## wherein A' stands for a group of the formula ##EQU2## and R.sup.5, R.sup.6, R.sup.7 and Y' each have the same meanings as defined above, are converted into those required in the end-products.
本发明涉及一般式(I)的新噻唑异喹啉或其盐,其中A代表式的基团;R1代表氢、羟基、烷氧基或芳基氧基;R2代表氢、羟基、烷氧基或芳基氧基;R3代表氢、烷基、芳基、硝基、羧基或羧基衍生物;Y代表氧、硫或式的基团,其中R4代表氢、烷基、芳基、酰基、烷基磺酰基或芳基磺酰基。这些新化合物可实际用作心脏药物或呼吸兴奋剂。根据本发明,可以如下制备新化合物:一般式(II)的异喹啉或其盐或一般式(III)的异喹啉,其中R5、R6和R7具有上述定义的相同含义,Y'代表氧、硫或式的基团,其中R8代表氢、烷基、芳基、酰基、芳基磺酰基或烷基磺酰基,进行反应,提供至少一个反应物含有硫原子的反应性碳酸衍生物,和/或氧化一般式(III),并/或将所得到的一般式(IA)的噻唑异喹啉的取代基A'、R5、R6和R7转化为所需的最终产物。