Quinazoline cardiac stimulants of the formula:-
and their pharmaceutically acceptable salts, wherein X is a straight or branched chain alkylene group having a
total of from 1 to 4 carbon atoms; and Y is a group of the formula:-
where R1 is H or C1-C4 alkyl and R2 and R3 are each independently H or CH3; processes for their preparation; and pharmaceutical compositions containing them.
式中的喹唑啉类强心剂:-
及其药学上可接受的盐类,其中 X 是具有 1 至 4 个碳原子的直链或支链亚烷基;Y 是如下式的基团
及其药学上可接受的盐,其中 X 是直链或支链亚烷基,具有 1 至 4 个碳原子; Y 是式中的一个基团
其中 R1 是 H 或 C1-C4 烷基,R2 和 R3 各自独立地是 H 或 CH3;它们的制备工艺;以及含有它们的药物组合物。