申请人:Synthelabo
公开号:US04820710A1
公开(公告)日:1989-04-11
Benzimidazole derivatives corresponding to the formula (1) ##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.
对应于公式(1)的苯并咪唑衍生物 ##STR1## 其中X为CH或N,R.sub.1为氢原子或苯甲基基团,可以承受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)烷氧基,氰基,甲硫基,甲基磺酰氧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,在杂环系统中,杂环可以是吡啶基,噻吩基或呋喃基,可以承受一个或多个取代基,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,必要时,当R.sub.3为OH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引起的炎症。