| abstract |
The present invention provides compounds of formula (I), biologically active metabolites, prodrugs, isomers, stereoisomers, solvates, hydrates and pharmaceutically acceptable salts thereof, variable in formula Elements are defined in the description. The compounds of the present invention are useful in treating immune conditions. X is an optionally substituted ring system that is aromatic, partially aromatic or non-aromatic having one or more fused ring systems. |