Benzofuran derivative, process for preparing the same and pharmaceutical composition containing the same
申请人:Kaken Pharmaceutical Co., Ltd.
公开号:EP0187387A1
公开(公告)日:1986-07-16
A benzofuran derivative having the general formula (I):
wherein
R' is hydrogen atom, a benzyl group, unsubstituted or substituted with a halogen atom or an alkyloxy group, or an alkyl group having 1 to 3 carbon atoms, R2 is hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R' is acetyl group, ethy group, carboxyl group or 4-methyl-2,5-dioxoimidazcrndine-4-yl group, R4 is hydrogen atom, hydroxyl group, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 9 carbon atoms, carboxymethoxy group, nitro group, acetoamino group, a benzyloxy group unsubstituted or substituted with a halogen atom, nitro group or an alkyloxy group or a group having the formula: -OR6, wherein R6 is an alkenyl group having 2 to 4 carbon atoms or an alkyl group having 2 to 3 carbon atoms having a halogen atom, cyano group or oxo group, R5 is hydrogen atom or methylenedioxy group together with R4 group, n is 1 or 2, and the unsubstituted or substituted N-carboxymethylsulfamoyl group, R4 and R5 are attached at 3-position, 4-position, 5-position, 6-position or 7-position of the benzofuran ring, or a nontoxic salt thereof, process for preparing the same and a parmaceutical composition containing the same.
The compounds of the present invention have powerful aldoe reductase inhibiting activity, platelet aggregation inhibiting activity and arachidonic acid metabolism inhibiting activity and are useful for a remedy for treatment of diabetic complication.
具有通式(I)的苯并呋喃衍生物:
其中
R'是氢原子、未取代或被卤素原子或烷氧基取代的苄基或具有 1 至 3 个碳原子的烷基,R2 是氢原子或具有 1 至 3 个碳原子的烷基,R'是乙酰基、乙基、羧基或 4-甲基-2,5-二氧代咪唑啉-4-基、R4 是氢原子、羟基、具有 1 至 6 个碳原子的烷基、具有 1 至 9 个碳原子的烷氧基、羧基甲氧基、硝基、乙酰氨基、未取代或被卤素原子取代的苄氧基、硝基或烷氧基或具有以下式子的基团:-OR6,其中 R6 是具有 2 至 4 个碳原子的烯基或具有 2 至 3 个碳原子并带有卤素原子、氰基或氧基的烷基,R5 是氢原子或与 R4 一起的亚甲基二氧基,n 是 1 或 2、和未取代或取代的 N-羧甲基氨基磺酰基,R4 和 R5 连接在苯并呋喃环的 3-位、4-位、5-位、6-位或 7-位,或其无毒盐,以及制备方法和含有上述物质的药物组合物。
本发明的化合物具有强大的醛还原酶抑制活性、血小板聚集抑制活性和花生四烯酸代谢抑制活性,可用于治疗糖尿病并发症。