| abstract |
The present invention provides compounds of formula (I), solvates thereof, methods for their preparation and their therapeutic uses:n n n n n n n n Wherein R 1 is C 1-6 alkyl or C 1-6 haloalkyl; R 2 is C 3-8 cycloalkyl or C 3-8 cycloalkenyl which may or may not be substituted by one or more groups selected from oxo, methyl, methylene and halogen; R 3 is hydrogen, methyl (which may be α or β configuration) or methylene; R 4 and R 5 are the same or different and are each hydrogen or halogen; (AA) is a single bond or a double bond. |