Benzimidazole derivative, hair growth promoter and external composition for skin using the same
申请人:SHISEIDO COMPANY LIMITED
公开号:EP0989123A1
公开(公告)日:2000-03-29
A benzimidazole derivative or a salt thereof expressed by the following Formula (I):
wherein one of A and B is a hydrocarbon group of C10-30 expressed by R1 and the other is -(CH2)n-NR2R3; R2 and R3 individually represent H, lower alkyl, phenyl or benzyl, or -NR2R3 may be a heterocycle having 3-7 members, or -CONR5-(CH2)n-NR2R3 may be the following Group (W):
wherein R2 is H, lower alkyl, phenyl or benzyl and ring E is a heterocycle of 6 or 7 members; R4 is selected from the group consisting of H, halogen, cyano, trifluoromethyl, lower alkyl and etc.; R5 is H, lower alkyl, lower acyl or lower alkylcarbamoyl; m is 0 or 1; and n is an integer of 0-5. The benzimidazole derivative or the salt thereof has excellent hair growth and regrowth promoting effects, which are useful for care, improvement or prevention of hair loss in mammals and, in particular, in human.
由下式(I)表示的苯并咪唑衍生物或其盐:
其中 A 和 B 中的一个是由 R1 表示的 C10-30 的烃基,另一个是-(CH2)n-NR2R3;R2 和 R3 分别代表 H、低级烷基、苯基或苄基,或-NR2R3 可以是具有 3-7 个成员的杂环,或-CONR5-(CH2)n-NR2R3 可以是下式(W):
其中 R2 是 H、低级烷基、苯基或苄基,环 E 是具有 6 或 7 个成员的杂环;R4 选自 H、卤素、氰基、三氟甲基、低级烷基等组成的组;R5 是 H、低级烷基、低级酰基或低级烷基氨基甲酰基;m 是 0 或 1;n 是 0-5 的整数。苯并咪唑衍生物或其盐具有良好的促进毛发生长和再生的效果,可用于护理、改善或预防哺乳动物,尤其是人类的脱发。