Patent ID: 6992190

Claim:
A compound of formula (I) or a pharmaceutically or veterinarily acceptable salt thereof: wherein: R 1 represents hydrogen, or C 1 –C 6 alkyl, C 1 –C 6 alkyl substituted by one or more halogen atoms, amino, hydroxy, or C 1 –C 6 alkoxy; R 2 represents a group R 10 —(X) n —(ALK) m — wherein R 10 represents hydrogen, or a C 1 –C 6 alkyl, C 2 –C 6 alkenyl, C 2 –C 6 alkynyl, cycloalkyl, aryl, or heterocyclyl group, any of which may be unsubstituted or substituted by C 1 –C 6 alkyl, C 1 –C 6 alkoxy, hydroxy, mercapto, C 1 –C 6 alkylthio, amino, halo, trifluoromethyl, cyano, nitro, —COOH, —CONH 2 , —COOR A , —NHCOR A , —CONHR A , —NHR A , —NR A R B , or —CONR A R B wherein R A and R B are independently a C 1 –C 6 alkyl group, and ALK represents a straight or branched divalent C 1 –C 6 alkylene, C 2 –C 6 alkenylene, or C 2 –C 6 alkynylene radical, and may be interrupted by one or more non-adjacent —NH—, —O— or —S— linkages, X represents —NH—, —O— or —S—, and m and n are independently 0 or 1; and A represents (i) a group of formula (ID) wherein: R 5 and R 6 taken together with the nitrogen atom to which they are attached form a saturated 5- to 8-membered monocyclic N-heterocyclic ring which is attached via the N atom and which optionally contains NR 11 wherein R 11 is hydrogen, C 1 –C 6 alkyl, benzyl, acyl, or an amino protecting group, O, S, SO or SO 2 as a ring member, and/or is optionally substituted on one or more C atoms by hydroxy, C 1 –C 6 alkyl, C 1 –C 6 alkoxy, oxo, ketalised oxo, amino, mono(C 1 –C 6 alkyl)amino, di(C 1 –C 6 alkyl)amino, carboxy, C 1 –C 6 alkoxycarbonyl, hydroxymethyl, C 1 –C 6 alkoxymethyl, carbamoyl, mono(C 1 –C 6 alkyl)carbamoyl, di(C 1 –C 6 alkyl)carbamoyl, or hydroxyimino.