| abstract |
The present invention provides compounds of the structural formulas of Formulas (I), (VII) and (XI):n n n n n n n n Or a pharmaceutically acceptable salt, solvate, clathrate or prodrug thereof, wherein X 1 , X 2 , X 3 , Y, Z, R 1 , R 2 , R 3 , R 18 and n are define. These compounds are useful for treating and preventing immunosuppressive and inflammatory conditions, allergic diseases and immune diseases. |