Patent ID: 6849644

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein R 1 is halogen, C 1-6 alkyl, C 1-6 alkoxy, C 1-6 alkanoyl, CN, CF 3 or OCF 3 ; R 2 is C 1-6 alkyl or a R 2 group together with R 3 forms a 5 or 6 membered saturated carbocyclic ring; R 3 is hydrogen or a C 1-10 alkyl group optionally substituted by one, two or three substituents selected from the group consisting of halogen, C 1-6 alkoxy, CN, amino, mono- or di-C 1-6 alkylamino or a group —C(O)OR 7 where R 7 is hydrogen or C 1-6 alkyl or R 3 together with a group R 2 forms a 5 or 6 membered saturated carbocyclic ring; m is 0-3; n is 0-6; J is selected from a group of formula (a), (b) or (c) in which: (a) is a group wherein R 4 is halogen, C 1-6 alkyl, C 1-6 alkoxy, C 1-6 alkanoyl, C 1-6 alkylthio, hydroxy, CN, CF 3 , NO 2 , OCF 3 , phenyl optionally substituted by groups as defined for R 1 above, benzyl, phenyloxy, benzyloxy or C 3-6 cycloalkyloxy or a group (CH 2 ) q NR 8 R 9 where q is 0, 1 or 2 and R 8 and R 9 are independently hydrogen or C 1-6 alkyl; p is 0, 1, 2, 3 or 4; X is CH or N; and is a single or double bond; (b) is a group in which R 4 and p are as defined for group (a) above; and (c) is a group in which R 4 and p are as defined for group (a) above and R 5 and R 6 combine together to form a 5- to 7- membered carbocyclic or heterocyclic ring optionally substituted by groups as defined for R 1 above.