| abstract |
The present invention provides a compound of formula (I) n n n n n n n n n n or a pharmaceutically acceptable salt, ester or stereoisomer thereof, wherein R 1 to R 3 and X have the significances given herein. The present invention is also directed to processes for making said compounds and uses of said compounds, in particular their use as medicaments, more particularly their use as medicaments in the treatment of cancer. |