Compounds of the general formula (I):,or a pharmaceutically acceptable salt thereof, processes for the preparation of these compounds, compositions containing these compounds, and the uses of these compounds.本發明關於通式(I)化合物:,或其醫藥上可接受之鹽、該等化合物之製備方法、含有該等化合物之組成物及該等化合物之用途。