申请人:Mitsubishi Chemical Corporation
公开号:US05462941A1
公开(公告)日:1995-10-31
A 3,6-disubstituted pyridazine derivative having excellent platelet agglutination inhibitory effects. It is useful for a preventive medicine or a therapeutic medicine for a cerebrovascular disorder such as cerebral thrombosis and cerebral embolism, an ischemic heart disease such as myocardial infarction, and a circulation disorder such as peripheral circulation disorder. A pharmaceutical composition containing a compound of the present invention as an effective ingredient and a process for preparing the same are also disclosed. The compound has the formula (I) ##STR1## wherein A represents an alkyl group having 3 to 6 carbon atoms; a cycloalkyl group having 5 to 7 carbon atoms; a phenyl group, a thienyl group, a furyl group, a thiazolyl group, a phenoxy group, a phenylalkyl group having 7 to 9 carbon atoms, a phenylthio group, a 5-6 membered saturated heterocyclic group containing one or more nitrogen atoms, a pyridyl group or an imidazolyl group each of which may have at least one substituent selected from the group consisting of an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms and a halogen atom; B represents (a) --NH--D wherein D represents ##STR2## (4) --CH.sup.3 R.sup.4 ; or (5) an alkyl group having 3 to 8 carbon atoms; or ##STR3## and the ring C represents a benzene ring.
一种具有出色的血小板凝聚抑制作用的3,6-二取代吡啶嗪衍生物。它可用于预防或治疗脑血栓和脑栓塞等脑血管疾病,心肌梗死等缺血性心脏病以及外周循环障碍等循环系统疾病的预防性或治疗性药物。本发明还公开了一种含有该化合物作为有效成分的制药组合物以及其制备方法。该化合物的化学式为(I)其中,A代表具有3到6个碳原子的烷基;具有5到7个碳原子的环烷基;苯基,噻吩基,呋喃基,噻唑基,苯氧基,具有7到9个碳原子的苯基烷基,苯硫基,含有一个或多个氮原子的5-6成员饱和杂环基,吡啶基或咪唑基,其中每个基团都可以具有至少一个选自由1到4个碳原子的烷基,1到4个碳原子的烷氧基和卤素原子的取代基;B代表(a)--NH--D,其中D代表##STR2##(4)--CH3R4;或(5)具有3到8个碳原子的烷基;或##STR3##环C代表苯环。