申请人:Synthelabo
公开号:US04912219A1
公开(公告)日:1990-03-27
Benzimidazole derivatives corresponding to the formula (I) ##STR1## in which X is CH or N, R.sub.1 is either a hydrogen atom, or a benzyl radical which can bear 1 to 3 substituents chosen from halogen atoms and trifluoromethyl, (C.sub.1-4)alkyl, (C.sub.1-4)alkoxy, cyano, methylthio, methylsulphinyl and methylsulphonyl radicals, or a methyl radical bearing a heterocyclic substituent in which the heterocyclic system can be a pyridyl, thienyl or furyl radical and can bear one or more substituents, R.sub.2 is a hydrogen atom or a (C.sub.1-4)alkyl radical, R.sub.3 is a hydrogen atom or a hydroxy radical, and R.sub.4 is a hydrogen atom or a (C.sub.1-4)alkyl radical, where appropriate, in tautomeric form when R.sub.3 is OH. The compounds may be used in treating allergy and histamine-induced inflammation.
公式(I)对应的苯并咪唑衍生物为:##STR1## 其中X为CH或N,R.sub.1为氢原子或苄基基团,该基团可以承载1至3个取自卤素原子和三氟甲基,(C.sub.1-4)烷基,(C.sub.1-4)氧烷基,氰基,甲硫基,甲基磺酰基和甲基磺基基团的取代基,或者带有杂环取代基的甲基基团,其中杂环系统可以是吡啶基,噻吩基或呋喃基,可以承载一个或多个取代基,R.sub.2为氢原子或(C.sub.1-4)烷基基团,R.sub.3为氢原子或羟基基团,R.sub.4为氢原子或(C.sub.1-4)烷基基团,在R.sub.3为OH时,适当时以互变异构体的形式存在。这些化合物可用于治疗过敏和组胺诱导的炎症。