| abstract |
The present invention relates to compounds of formula I n nwherein R 1 , R 2 and R 3 are defined herein, their pharmaceutically acceptable salts, enantiomeric forms, diastereoisomers and racemates, the preparation of the above compounds, medicaments containing them and their manufacture, as well as the use of the above compounds in the control or prevention of illnesses such as cancer. |