The invention relates to prodrug compounds of formula I:
wherein R
2
, R
3
, R
5
, R
7
and X are as defined herein. The invention also provides pharmaceutically acceptable compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders, including pain. The compounds of formula I possess advantageous solubility and physicochemical properties.
本发明涉及公式I的前药化合物:其中R2,R3,R5,R7和X如本文所定义。本发明还提供了包含本发明化合物的药学上可接受的组合物,并且提供了使用这些组合物治疗各种疾病(包括疼痛)的方法。公式I的化合物具有优越的溶解度和物理
化学性质。