| abstract |
A compound of formula (I) wherein: X is O or S; R?1 and R2¿ are independently hydrogen, C¿1-6? alkyl or C3-6 cycloakyl or R?1 and R2¿ together with the carbon atom to which they are attached form a C¿3-6? cycloalkyl group; R?3¿ is hydrogen, and R4 is C¿1-6? alkyl or C3-6 cycloalkyl or R?3 and R4¿ together with the carbon atom to which they are attached form a C¿3-6? cycloalkyl group. The compounds of the invention are indicated for use in the treatment or prevention of allergic, inflammatory, auto-immune, proliferative and hyper-proliferative diseases. |