申请人:Purdue Pharma L.P.
公开号:US20140187549A1
公开(公告)日:2014-07-03
The application is directed to compounds of Formula I-A
and pharmaceutically acceptable salts and solvates thereof, wherein
, R
1a
, R
3a
, R
4
, Y and Z
a
are defined as set forth in the specification. The invention is also directed to use of compounds of Formula I-A to treat disorders responsive to the modulation of one or more opioid receptors, or as synthetic intermediates. Certain compounds of the present invention are especially useful for treating pain.