Pyrrolopyrimidines as protein kinase inhibitors

This invention is directed to compounds of the formula (I) to N-oxides, prodrugs, acid bioisosteres, pharmaceutically acceptable salts or solvates of such compounds, or N-oxides, prodrugs, or acid bioisosteres of such salts or solvates, to compositions comprising such compounds, and to methods of treatment comprising administering, to a patient in need thereof, such compounds and compositions.