Patent ID: 7022724

Claim:
A compound of formula 1: in which: R 1 is hydrogen, halogen, cyano, amino, nitro, hydroxy, aminocarbonyl, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 alkoxy, C 2-6 alkenyloxy, C 2 alkynyloxy, hydroxyC 1-6 alkyl, C 1-6 alkoxyC 1-6 alkyl, aminoC 1-6 alkyl or C 1-6 alkylcarbonyl each of which is unsubstituted or substituted by one, two or three halogen atoms; R 2 is phenyl, which is unsubstituted or substituted with at least one group selected from halogen, cyano, amino, nitro, hydroxy, aminocarbonyl, C 1-6 alkyl, C 26 alkenyl, C 2-6 alkynyl, C 1-6 alkoxy, C 2-6 alkenyloxy, C 2 alkynyloxy, hydroxyC 1-6 alkyl, C 1-6 alkoxyC 1-6 alkyl, aminoC 1-6 alkyl or C 1-6 alkylcarbonyl each of which is itself unsubstituted or substituted by one, two or three halogen atoms; R 3 is hydrogen, halogen, cyano, amino, nitro, hydroxy, aminocarbonyl, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 alkoxy, C 2-6 alkenyloxy, C 2 alkynyloxy, hydroxyC 1-6 alkyl, C 1-6 alkoxyC 1-6 alkyl, aminoC 1-6 alkyl, C 1-6 alkylcarbonyl or NR c R d , each of which is unsubstituted or substituted by one, two or three halogen atoms; R a and R b are each independently hydrogen, C 1-6 alkyl, C 1-6 alkoxy, C 2-6 alkenyl, C 2-6 alkynyl, aminoC 1-6 alkyl or phenyl; R c and R d are each independently hydrogen, C 1-6 alkyl, C 1-6 alkoxy, C 2-6 alkenyl or C 2-6 alkynyl; m is 0, 1, 2 or 3; and n is 0 or 1; or a pharmaceutically acceptable salt thereof.