Patent ID: 7176215

Claim:
A compound of formula (1a): wherein: the dashed line represents an optional bond; A is a —N═ atom or a —N(R b )—, —C(R b )═ or —C(R b )(R c )— group; R a , R b and R c are each independently a hydrogen atom or an optionally substituted C 1-6 alkyl group; X is a —S— atom; Y is a N atom or CH group or substituted C atom; n is zero or the integer 1; Alk 1 is an optionally substituted aliphatic or heteroaliphatic chain; L 1 is a covalent bond or a linker atom or group; Cy 1 is an optionally substituted cycloaliphatic, polycycloaliphatic, heterocycloaliphatic, polyheterocycloaliphatic, aromatic or heteroaromatic group; Ar is an optionally substituted aromatic or heteroaromatic group; and the salts, solvates, and N-oxides thereof.