Patent ID: 6943175

Claim:
A compound of the formula (I): in which: R 1 is an optionally substituted aryl or an optionally substituted heteroaryl ring; R 2 is the residue of a 5 or 6-membered heteroaryl ring which is optionally substituted with from 1 to 3 substituents selected from halo, cyano, hydroxy, (C 1-6 )alkyl (optionally substituted by halo, hydroxy, amino, mono to perfluoro(C 1-3 )alkyl, carboxy or (C 1-6 )alkoxycarbonyl), (C 3-7 )cycloalkyl, C (1-6) alkoxy, amino, mono- or di-(C 1-6 )alkylamino, acylamino, carboxy, (C 1-6 )alkoxycarbonyl, carboxy(C 1-6 )alkyloxy, (C 1-6 )alkylthio, (C 1-6 )alkylsulphinyl, (C 1-6 )alkylsulphonyl, sulphamoyl, mono- and di-(C 1-6 )alkylsulphamoyl, carbamoyl, mono- and di-(C 1-6 )alkylcarbamoyl, and heterocyclyl; X is CH 2 or CHR 3 in which R 3 is C (1-6) alkyl or is linked to the ortho position of an aryl or heteroaryl ring of R 1 to form a 5 to 7 membered ring optionally including oxygen or nitrogen as a ring atom; Y is C (1-3) alkylene or C (4-6) cycloalkylene; including tautomeric forms of the imidazole ring; and salts thereof, and excluding 8-[2-(benzylamino)ethylamino]theophylline.