Pyrazoline derivatives and agents for treating cerebrovascular diseases containing the same as active ingredient
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0295695A2
公开(公告)日:1988-12-21
This invention relates to new 2-pyrazoline derivatives represented by the following general formula (A):
( wherein R¹ denotes a pyridyl, a pyrazyl or an alkoxyl group; and R² stands for hydrogen atom, an alkyl, a pyridyl, a furyl, phenyl or a substituted phenyl group ), and to a process for producing the same. This invention also relates to agents for treating cerebrovascular diseases containing, as active ingredients, a 2-pyrazoline derivative represented by the following general formula (G):
( wherein R³ denotes hydrogen atom, an alkyl, acetyl, an alkoxycarbonyl, an amino, benzoyl, a substituted benzoyl, a pyridylcarbonyl, a furylcabonyl, a thienylcarbonyl, a pyrazylcarbonyl, an N-substituted carbamoyl, an N-substituted thiocarbamoyl, or carboxyl group; and R⁴ stands for hydrogen atom, an alkyl, a pyridyl, a thienyl, a furyl, cyclohexyl, phenyl or a substituted phenyl group ) or a pharmaceutically acceptable salt thereof.
Administration of an agent of this invention for treating cerebrovascular diseases copes with cerebral edemata in the acute stage of cerebral apoplexy and regulates the whole-body and intracranial blood circulation, thereby protecting ischemic lesions and minimizing the spread of affected parts.
本发明涉及由以下通式(A)代表的新的 2-吡唑啉衍生物:
(其中,R¹表示吡啶基、吡嗪基或烷氧基;R²表示氢原子、烷基、吡啶基、呋喃基、苯基或取代苯基),并涉及其生产工艺。本发明还涉及治疗脑血管疾病的制剂,其活性成分含有下通式(G)代表的 2-吡唑啉衍生物:
(其中 R³ 表示氢原子、烷基、乙酰基、烷氧羰基、氨基、苯甲酰基、取代苯甲酰基、吡啶羰基、呋喃羰基、噻吩羰基、吡嗪羰基、N-取代氨基甲酰基、N-取代硫代氨基甲酰基或羧基;R⁴代表氢原子、烷基、吡啶基、噻吩基、呋喃基、环己基、苯基或取代苯基)或其药学上可接受的盐。
服用本发明治疗脑血管疾病的制剂,可在脑中风的急性期处理脑水肿,调节全身和颅内血液循环,从而保护缺血性病变,最大限度地减少受影响部位的扩散。