| 摘要 |
X is O or S; R1and R2are independently hydrogen, C1-6 alkyl or C3-6cycloakyl or R1and R2together with the carbon atom to which they are attached form a C3-6cycloalkyl group; R3is hydrogen, and R4is C1-6 alkyl or C3-6cycloalkyl or R3and R4together with the carbon atom to which they are attached form a C3-6cycloalkyl 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. |
