4,5-Dihydro-4,4-dialkyl-6-)substituted) phenyl-3-(2H)-pyridazinones useful as cardiotonic agents
申请人:WARNER-LAMBERT COMPANY
公开号:EP0186484A2
公开(公告)日:1986-07-02
There are disclosed 4,5-dihydro-4,4-dialkyl-6-(substituted)phenyl-3(2H)-pyridazino- nes having unexpected activity for use as cardiotonic and antihypertensive agents.
The compounds are of the formula
wherein Q is oxygen or sulfur, R, and R, are independently hydrogen or lower alkyl; R. and R, are independently lower alkyl; Y is H, halogen, lower alkyl, lower alkoxy, or a group such as -OCH2CH CH,NRd Re where Rd and Re are independently H, lower alkyl, (CH,)n Rf where Rfis a benzene ring optionally substituted by halogen, hydroxy, lower alkyl, lower alkoxy, and CF,, and n is zero to three; and A is attached to the 3- or 4-position of the phenyl ring.
已公开的 4,5-二氢-4,4-二烷基-6-(取代)苯基-3(2H)-哒嗪类化合物具有意想不到的活性,可用作强心剂和降压药。
这些化合物的化学式为
其中 Q 是氧或硫;R 和 R 独立地是氢或低级烷基;R 和 R 独立地是低级烷基;Y 是 H、卤素、低级烷基、低级烷氧基或诸如 -OCH2CH CH,NRd Re 的基团,其中 Rd 和 Re 独立地是 H、低级烷基、(CH,)n Rf,其中 Rf 是任选被卤素、羟基、低级烷基、低级烷氧基和 CF 取代的苯环,n 是 0 到 3;A 连接到苯环的 3 位或 4 位。