| abstract |
A compound for use as a PGD2 antagonist is of structural formula [1] in which: A represents a fully saturated or partially unsaturated monocyclic 5-7 membered ring containing one or two nitrogen atoms; B represents a direct bond, an optionally substituted methylene group, an optionally substituted nitrogen atom, oxygen, or S(O)n, where n = 0, 1, or 2; L represents a direct bond, or an optionally substituted alkylene or alkenylene group; R1 represents an optionally substituted aryl or heteroaryl group, or an optionally substituted aryl-fused-heterocycloalkyl, heteroaryl-fused-cycloalkyl, heteroaryl-fused-heterocycloalkyl or aryl-fused-cycloalky group; R2 represents an optionally substituted aryl or heteroaryl group, or an optionally substituted aryl-fused-heterocycloalkyl, heteroaryl-fused-cycloalkyl, heteroaryl-fused-heterocycloalkyl or aryl-fused-cycloalkyl group; X represents a carboxylic acid, tetrazole, 3-hydroxyisoxazole, hydroxamic acid, phosphinate, phosphonate, phosphonamide, sulfonic acid or a group of formula C(=O)NHSO2Yor SO2NHC(=O)Y; and Y represents an optionally substituted aryl or heteroaryl group or an optionally substituted alkyl or cycloaikyl group; or a N-oxide, pharmaceutically acceptable salt, solvate or prodrug thereof. |