Patent ID: 6506758
Filing Date: 2003-01-14
Classification: C07D

Abstract:
A compound of formula (I): or a salt thereof, or a solvate thereof, wherein:A is an unsubstituted or substituted aryl group; Ra represents â€”COâ€”NRsRt wherein Rs and Rt each independently represent hydrogen; alkyl, substituted alkyl, unsubstituted or substituted alkenyl, unsubstituted or substituted aryl, unsubstituted or substituted arylalkyl, unsubstituted or substituted heterocyclyl or an unsubstituted or substituted heterocyclylalkyl group, or Rs and Rt together with the nitrogen to which they are attached form a heterocyclyl group; R1 and R2 each independently represents a halogen; R3 represents hydrogen, alkanoyl, alkyl, aminoalkyl, hydroxyalkyl, carboxyalkyl, carbalkoxyalkyl, carbamoyl, alkylsulphonyl, or arylsulphonyl; in which each heterocyclyl group independently is a saturated or unsaturated single or fused ring heterocyclic group, each ring having 5 to 8 ring atoms which ring atoms include 1, 2 or 3 heteroatoms selected from O, S, or N; and in which each substituted group independently contains up to 3 substitutents selected from alkyl, alkoxy, thioalkyl, hydroxy, halogen, trifluoromethyl, alkylcarbonyl, cyano, nitro and NRuRv wherein Ru and Rv each independently represent hydrogen, alkyl and alkylcarbonyl.