The present invention is directed to compounds of formula I and tautomers and pharmaceutically acceptable salts thereof which are selective inhibitors of JAK. The present invention is also directed to intermediates used in making such compounds, the preparation of such a compound, pharmaceutical compositions containing such a compound, methods of inhibition JAK activity, and methods to prevent or treat a number of conditions mediated at least in part by JAK activity.
本发明涉及公式I的化合物及其互变异构体和药学上可接受的盐,其为选择性JAK
抑制剂。本发明还涉及制备此类化合物所使用的
中间体、制备此类化合物的方法、包含此类化合物的药物组合物、抑制JAK活性的方法,以及预防或治疗至少部分由JAK活性介导的多种疾病的方法。