Bicyclic heteroaromatic compounds as protein tyrosine kinase inhibitors.

Substituted heteroaromatic compounds of formula (i), wherein X is N or CH; Y is CR1 and V is N; or Y is N and V is CR1; or Y is CR1 and V is CR2; or y is CR2 and V is CR1, R1 represents a group CH3SO2CH2CH2NHCH2-Ar-, wherein Ar is selected from phenyl, furan, thiophene, pyrrole and thiazole, each of which may optionally be substituted by one or two halo, C1-4alkyl or C1-4alkyl groups; R2 is selected from the group comprising hydrogen, halo, hydroxy, C1-4alkoxy, C1-4alkylamino and di[C1-4alkyl]amino; U represents a phenyl, pyridyl, 3H-imidazolyl, indolyl, isoindolyl, indolinyl, isoindolinyl, 1H-indazolyl, 2,3-dihydro-1H-indazolyl, 1H-benzimidazolyl, 2,3-dihydro-1H-benzimidazolyl or 1H-benzotriazolyl group, substituted by an R3 group and optinally substituted by at least one independently selected R4 group, R3 is selected from a group comprising benzyl, halo-, dihalo- and trihalobenzyl, benzoyl, pyridylmethyl, pyridylmethoxy, phenoxy, benzyloxy, halo-, dihalo- and trihalobenzyloxy and benzeyloxy and benzenesulphonyl, or R3 represents trihalomethylbenzyl or trihalomethylbenzyloxy; or R3 represents a group of formula (a) wherein each R5 is independently selected from halogen, C1-4alkyl l, C1-4alkoxy; and in N is 0 to 3; each R4 is independently hydroxy, halogen, C1-4alkyl, C2-4alkenyl, C2-4alkynyl, C1-4alkoxy, amino, C1-4alkylamino, di[C1-4alkyl]amino, C1-4alkylthio, C1-4alkylsulphinyl, C1-4alkylsulphonyl, C1-4alkylcarbonyl, carboxy, carbamoyl, C1-4alkoxycarbonyl, C1-4alkanoylamino, n-(C1-4alkyl)carbamoyl, N,N-di(C1-4alkyl)carbamoyl, cyano, nitro and trifluoromethyl, and salts and solvates thereof, are disclosed, as are methods for their preparation, pharmaceutical compositions containing them and their use in medicine.