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.
提供了式(I)的新化合物,其中R1,R2和R3如规范中所定义,并且其药学上可接受的盐;以及它们的制备方法,包含它们的组合物和它们在治疗中的用途。这些化合物是激酶Itk的
抑制剂。