申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:EP2325183A1
公开(公告)日:2011-05-25
There are provided compounds represented by the following general formula (I):
where R1 is 5-methylpyridin-2-yl, p-tolyl or mesityl, R2 is
where R3 is C1-C4 alkyl, R4 is H or C1-C4 alkyl,
and pharmaceutically acceptable salts thereof. The compounds exhibit pruritus-inhibiting action, and are useful for prevention or treatment of itching and pruritus caused by reaction against insect-inflicted wounds, reaction against environmental allergens, skin infections or external parasite infections, or caused to renal dialysis patient.
本发明提供了由以下通式 (I) 代表的化合物:
其中 R1 是 5-甲基吡啶-2-基、对甲苯基或间甲苯基,R2 是
其中 R3 是 C1-C4 烷基,R4 是 H 或 C1-C4 烷基、
及其药学上可接受的盐类。这些化合物具有抑制瘙痒的作用,可用于预防或治疗由昆虫造成的伤口反应、环境过敏原反应、皮肤感染或外部寄生虫感染引起的瘙痒,或肾透析患者引起的瘙痒。