申请人:——
                            
                            
                                公开号:US20030004340A1
                            
                            
                                公开(公告)日:2003-01-02
                            
                            There is provided a compound of formula I,
1
wherein Het
1
, R
1
, R
2
, R
3
, X and n have meanings given in the description, which are useful in the prophylaxis and in the treatment of diseases mediated by opiate receptors, such as pruritus.
                            提供了一种公式I的化合物,其中Het1、R1、R2、R3、X和n具有说明书中给出的含义,它们在通过阿片受体介导的疾病的预防和治疗中是有用的,例如瘙痒。