There are provided novel compounds of formula (I) wherein R
1
, R
2
and R
3
are as defined in the specification and pharmaceutically acceptable salts thereof; together with processes for their preparation, compositions containing them and their use in therapy. The compounds are inhibitors of the kinase Itk.
提供了公式(I)的新化合物,其中R1、R2和R3如规范中定义,并且其药学上可接受的盐;以及它们的制备过程、含有它们的组合物和它们在治疗中的用途。这些化合物是Itk激酶的
抑制剂。