| abstract |
The present invention provides a compound of the formula (I) (see formulala (I) wherein: R1 is a group selected from -CH2OH, -NHCOH and R2 is a hydrogen atom; or R1 together with R2 form the -NHC group (O) CH = CH-, wherein the nitrogen atom is attached to the carbon atom of the phenyl ring to which R1 is attached and the carbon atom is attached to the carbon atom of the phenyl ring to which R2 R3a is attached and R3b are independently selected from the group consisting of hydrogen atoms and C1-4 alkyl groups is an integer selected from 0 to 6, R4 is selected from the group consisting of an optionally substituted monocyclic or polycyclic C3-10 cycloalkyl group, an optionally substituted monocyclic C5-10 aryl group and a methyl group that is substituted with one or more substituents selected from C5-10 aryl and C5-10 aryloxy groups, wherein the monocyclic or polycyclic C3-10 cycloalkyl groups and C5 aryl groups -10 monocicl icos are independently optionally substituted with one or more substituents selected from halogen atoms, C1-4 alkyl groups, C1-4 alkoxy, C5-10 aryl and C5-10 aryloxy groups, or a pharmaceutically acceptable salt or solvate or stereoisomer thereof. |