The invention relates to benzhydrylpiperazine derivatives having the following general formula:
wherein
A is lower alkylene,
Z is benzhydryl optionally substituted with halogen, and
R' is amino, aryl, pyridyl, acyl or acylamino, in which the aryl group and pyridyl group are substituted with nitro, amino or acylamino, provided that Z is benzhydryl substituted with halogen, when R1 is amino, and to pharmaceutically acceptable salts thereof.
These compounds possess anti-allergic activities and are effective in the treatment of allergic symptoms.
The invention further relates to processes for the preparation of these compounds and to pharmaceutical compositions containing them.
本发明涉及具有以下通式的苯甲基
哌嗪衍
生物:其中 A 为低级亚烷基,Z 为可选被卤素取代的苯甲基,R'为
氨基、芳基、
吡啶基、酰基或酰
氨基,其中芳基和
吡啶基被硝基、
氨基或酰
氨基取代,但当 R1 为
氨基时,Z 为被卤素取代的苯甲基,本发明还涉及其药学上可接受的盐类。 这些化合物具有抗过敏活性,可有效治疗过敏症状。 本发明还涉及制备这些化合物的工艺以及含有这些化合物的药物组合物。