The invention relates to new piperazine derivatives of the formula
wherein A is an optionally substituted bicyclic hetero aryl radical, n has the value 1 or 2, R, and R2 are hydrogen or alkyl (1-3 C). A is -CH2-CH2- or -CH(CH3)-CH2- and B is an optionally substituted aryl or hetero aryl group, an alkyl group or a saturated or partly unsaturated cycloalkyl group and salts and products thereof. These new compounds are useful for the treatment of circulatory diseases. In particular it has has been found that these compounds have blood-pressure lowering properties regulated by a central mechanism of action.
The invention also relates to new intermediates useful for the preparation of piperazine compounds of the above formula (1)
本发明涉及式如下的新
哌嗪衍
生物
其中 A 是任选取代的双环杂芳基,n 的值为 1 或 2,R 和 R2 是
氢或烷基(1-3 C)。A 是-
CH2- -或-CH(
CH3)- -,B 是任选取代的芳基或杂芳基、烷基或饱和或部分不饱和
环烷基及其盐和产物。这些新化合物可用于治疗循环系统疾病。特别是已经发现,这些化合物具有由中枢作用机制调节的降血压特性。
本发明还涉及用于制备上式(1)
哌嗪化合物的新
中间体