| abstract |
Compounds of formula (I) are CRTH2 ligands, useful for treatment of inflammatory, autoimmune, respiratory or allergy disease: wherein R1 is hydrogen or methyl and R2 is optionally substituted cycloalkyl, or optionally substituted non-aromatic heterocyclyl having 4 to 6 ring atoms; or R1 and R2, taken together with the carbon atom to which they are attached form an optionally substituted cycloalkyl, or optionally substituted non-aromatic heterocyclyl ring having 4 to 6 ring atoms; R is hydrogen or an optional substituent; the phenyl ring containing the substituent R is optionally substituted by 1 , 2 or 3 optional substituents; A is hydrogen or C1-C3 alkyl; and ring Ar is an optionally substituted phenyl or 5- or 6- membered monocyclic heteroaryl ring. |