| abstract |
The application discloses a compound of formula (I) or a salt thereof, wherein Q is: And X, R 1a , R 1b , R 3 , R 4 and R 5 are as defined in the present application. The present application also discloses methods of using the compounds as inhibitors of Bruton's tyrosine protein kinase (Btk) and pharmaceutical compositions comprising the compounds. These compounds are useful for treating, preventing or slowing the progression of diseases or conditions in various therapeutic areas, such as autoimmune and vascular diseases. |