A compound of formula I:
or a pharmaceutically acceptable salt thereof, wherein R
1
and R
2
are each independently hydrogen or hydroxy; wherein R
1
and R
2
are not both hydroxy. Also provided are methods of treatment as Janus Kinase inhibitors and pharmaceutical compositions containing the compounds of the invention and combinations thereof with other therapeutic agents.
化合物I的
化学式为:或其药学上可接受的盐,其中R1和R2各自独立地为
氢或羟基;其中R1和R2不同时为羟基。本发明还提供了作为Janus激酶
抑制剂的治疗方法,以及含有本发明化合物和与其他治疗剂的组合物的制药组合物。