申请人:Santhakumar Vijayaratnam
公开号:US20080004288A1
公开(公告)日:2008-01-03
Compounds of formula I or pharmaceutically acceptable salts thereof: Formula (I) wherein R
1
, R
2
, R
3
and R
8
are as defined in the specification as well as salts and pharmaceutical compositions including the compounds are prepared. They are useful in therapy, in particular in the management of pain.