4-{[3-(dimethylamino)propyl]amino}-N,N-dimethyl-3-nitrobenzamide 在
palladium-carbon 氢气 作用下,
以
乙醇 为溶剂,
反应 13.0h,
以yielding the entitled compound (2.59 g) as dark red solid的产率得到3-amino-4-{[3-(dimethylamino)propyl]amino}-N,N-dimethylbenzamide
参考文献:
名称:
Benzimidazole derivative, hair growth promoter and external composition for skin using the same
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.