A compound of formula I
in which R, is H, (C1-4) alkyl, phenyl or (C7-11)-phenylalkyl, the phenyl ring of the last two radicals being un- substituted or mono- or independently di-substituted by (C1-4)alkyl or -alkoxy or by halogen,
R2 is H, (C1-4) alkyl, phenyl or phenyl, mono- or independently di-substituted by (C1-4)alkyl or - alkoxy or by halogen and one of
R3 to R6 is H and the remaining radicals R3 to R6 independently are H, (C1-4)-alkyl or -alkoxy, hydroxy, halogen and if desired any two adjacent remaining radicals R3 to R6 represent -OCH2O-
with the proviso that at least one of the radicals R, to R6 is other than H, or a pharmaceutically acceptable acid addition salt thereof is a useful cardiotonic agent and vasodilator in heart insufficiency and a blood platelet aggregation inhibitor.
式 I 的化合物
其中R,是H、(C1-4)烷基、苯基或(C7-11)-苯基烷基,后两个基团的苯基环未被取代或被(C1-4)烷基或-烷氧基或卤素单取代或独立地二取代、
R2 是 H、(C1-4)烷基、苯基或被(C1-4)烷基或-烷氧基或卤素单取代或独立地二取代的苯基,且其中一个
R3 至 R6 中的一个是 H,其余 R3 至 R6 独立地是 H、(C1-4)-烷基或-烷氧基、羟基、卤素,如果需要,任何两个相邻的其余基 R3 至 R6 代表-OCH2O-。
或其药学上可接受的酸加成盐,是一种有用的强心剂、心脏功能不全的血管扩张剂和血小板聚集
抑制剂。