Patent ID: 7230108

Claim:
A compound of formula (I) or a salt, solvate or pro-drug thereof: wherein: one of R 1 and R 2 is a group (IA): and the other R 1 and R 2 is C 1-4 alkoxy optionally substituted on carbon by one or more groups selected from R 5 ; Ring A is pyridin-2-yl or thiazol-2-yl; wherein said pyridin-2-yl or thiazol-2-yl is optionally substituted on carbon by one or more groups selected from R 6 ; one of R 3 and R 4 is hydrogen and the other is selected from hydrogen, C 1-4 alkyl, C 1-4 alkoxy, carbocyclyl, heterocyclyl, carbocyclyloxy and heterocyclyloxy; wherein R 3 and R 4 are independently optionally substituted on carbon by one or more groups selected from R 7 ; and wherein if R 3 or R 4 is heterocyclyl, said heterocycyl contains an —NH— moiety, and the nitrogen of the —NH— moiety is optionally substituted by C 1-4 alkyl; R 6 is selected from halo, carboxy and C 1-4 alkyl; R 5 and R 7 are independently selected from halo, C 1-4 alkyl, C 1-4 alkoxy, N-(C 1-4 alkyl)amino, N,N-(C 1-4 alkyl) 2 amino, carbocyclyl, heterocyclyl, carbocyclyloxy, heterocyclyloxy and carbocyclylidenyl; wherein R 5 and R 7 is independently optionally substituted on carbon by one or more groups selected from R 8 ; and wherein if R 5 and/or R 7 is heterocyclyl, said heterocyclyl contains an —NH— moiety, and the nitrogen of the —NH— moiety is optionally substituted by C 1-4 alkyl; and R 8 is selected from halo, carboxy, methyl, ethyl, methoxy, ethoxy, methylamino, ethylamino, dimethylamino, diethylamino and N-methyl-N-ethylamino.