申请人:Schering AG
公开号:US05051422A1
公开(公告)日:1991-09-24
This invention relates to novel 2-substituted-1(4)-aryl piperazines and to a process for their preparation. The compounds of this invention have been found to have cardiovascular, primarily antiarrhythmic effects and are of the following general formula I ##STR1## wherein R is hydrogen, lower alkyl or benzyl; and R.sub.1 and R.sub.2 are the same or independently hydrogen, lower alkyl, lower alkoxy or halogen; Z is ##STR2## --NR.sub.3 --CH.sub.2 --, --OCH.sub.2 --, --NR.sub.3 --, --O-- or --NR.sub.3 SO.sub.2 -- and Q is (C.sub.1 -C.sub.4) alkyl--SO.sub.2 --NR.sub.4 -- or ##STR3## R.sub.3 is hydrogen, lower alkyl, allyl or loweralkoxyloweralkyl; and included in the descriptors of the compounds of Formula I is the proviso that when R.sub.4 is methyl then ##STR4## must be in the 2 position of Formula I.
本发明涉及新型的2-取代-1(4)-芳基哌嗪化合物及其制备方法。本发明的化合物已被发现具有心血管,主要是抗心律失常的效果,并且其一般式如下:I式(见原文)。其中,R为氢,低碳基或苄基;R1和R2相同或独立地为氢,低碳基,低碳氧基或卤素;Z为(见原文);Q为(C1-C4)烷基-SO2-NR4-或(见原文);R3为氢,低碳基,烯丙基或低碳氧基低碳基;并且包括在式I的化合物的描述中的条件是,当R4为甲基时,则(见原文)必须在式I的2位。