Benzimidazole derivative, hair growth promoter and external composition for skin using the same
申请人:Shiseido Co., Ltd.
公开号:US06204264B1
公开(公告)日:2001-03-20
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.
以下为公式(I)所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烃基,另一个是—(CH2)n—NR2R3;R2和R3分别代表H、低碳基、苯基或苄基,或—NR2R3可以是具有3-7个成员的杂环,或者—CONR5—(CH2)n—NR2R3可以是以下群(W):
其中,R2为H、低碳基、苯基或苄基,环E为6或7个成员的杂环;R4从H、卤素、氰基、三氟甲基、低碳基等组中选择;R5为H、低碳基、低酰基或低碳基氨基酰基;m为0或1;n为0-5的整数。
该苯并咪唑衍生物或其盐具有优异的促进头发生长和再生的作用,可用于哺乳动物,特别是人类的脱发护理、改善或预防。