Piperazinyl-imidazo(1,2-a)pyrazine derivatives, process for their preparation and pharmaceutical compositions containing them
申请人:Merck & Co., Inc.
公开号:EP0013914A1
公开(公告)日:1980-08-06
Compounds of formula
wherein, R1 and R2 are hydrogen, alkyl, cycloalkyl, alkylthio, halo, -CF3, CF3S-, phenyl optionally substituted by halogen, alkyl or alkoxy, -CH2NR4Rs or -S02NR6R7 or R1 and R2 joined together form -(CH2)n-, n= 3 or 4, R3 is hydrogen, alkyl, cycloalkylalkyl, cycloalkyl or alkanoyl and Y is hydrogen, halo, -CN, -CF3, alkyl, alkoxy or -COOH, prepared by reaction between halo-imidazo (1,2-a) pyrazines with piperazine derivatives, are found to be active anorexic, antidepressant, antihypertensive, analgesic, antiarrhythmic, and/or antismoking agents.
式中的化合物
其中,R1 和 R2 是氢、烷基、环烷基、
硫代烷基、卤素、-
CF3、 S-、任选被卤素、烷基或烷氧基取代的苯基、- NR4Rs 或 -S02NR6R7 或 R1 和 R2 连接在一起形成-(
CH2)n-,n= 3 或 4,R3 是氢、烷基、环烷基烷基或烷酰基,Y 是氢、卤素、-CN、- 、烷基、烷氧基或-COOH,由卤代
咪唑与卤代
咪唑之间的反应制备、通过卤代
咪唑并(1,2-a)
吡嗪与
哌嗪衍
生物反应制备的 Y 为氢、卤代、-CN、- 、烷基、烷氧基或-COOH 的化合物具有厌食、抗抑郁、降压、镇痛、抗心律失常和/或戒烟的活性。