| abstract |
The present invention relates to pyrimidine diamine derivatives, processes for their preparation and their use in medicine. Specifically, the present invention relates to a novel pyrimidinediamine derivative represented by the formula (I), a pharmaceutically acceptable salt thereof, or a pharmaceutical composition containing the same, and a process for the preparation thereof, and the present invention further relates to the pyrimidine Use of a diamine derivative, a pharmaceutically acceptable salt thereof or a pharmaceutical composition containing the same for the preparation of a therapeutic agent, in particular a Syk protein kinase inhibitor, wherein each substituent of the formula (I) is as defined in the specification the same. □ |