申请人:Ananthan Subramaniam
公开号:US20080194568A1
公开(公告)日:2008-08-14
Compounds represented by formula (I) wherein R is C
1-6
cycloalkylalkyl; or C
3-6
alkenyl; R′ is H or C
1-6
alkyl; X is H or OH; Y is alkyl, cycloalkyl, aryl, heteroaryl or aroyl; and Z is CH or N; provided that X is H, when Z is CH and R is C
4
cycloalkylalkyl or C
4
alkenyl; prodrugs thereof; and pharmaceutically acceptable salts thereof are provided. Compounds of the above formula are useful as analgesics for treating pain; as immunomodulators, to modulate the behavioral effects of drugs of abuse and to modulate the development of tolerance and dependence of μ agonists.