Patent ID: 7618969

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein: R 1 is C 1-6 alkyl, haloC 1-6 alkyl, C 2-6 alkenyl, amino, monoC 1-4 alkylamino or diC 1-4 alkylamino; R 2 and R 3 , are the same or different and are hydrogen, halogen, C 1-6 alkyl, haloC 1-6 alkyl,C 1-4 alkoxy, haloC 1-4 alkoxy, cyano, amino, monoC 1-4 alkylamino or diC 1-4 alkylamino; each R 4 , which may be the same or different, is C 1-6 alkyl, halogen, haloC 1-6 alkyl, C 1-4 alkoxy, haloC 1-4 alkoxy, cyano, nitro, amino, monoC 1-4 alkylamino or diC 1-4 alkylamino; p is 0, 1 or 2; n is 1 or 2; R 5 and R 6 , are the same or different and are hydrogen, halogen, C 1-6 alkyl, haloC 1-6 alkyl, C 1-4 alkoxy, haloC 1-4 alkoxy, cyano, amino, monoC 1-4 alkylamino or diC 1-4 alkylamino; and Het is thienyl, pyridyl, pyrimidinyl, pyridazinyl, pyrazinyl, imidazolyl, pyrazolyl, pyrrolyl, quinolyl, thiazolyl or furyl, each of which may be substituted by one or more groups independently selected from the group consisting of C 1-6 alkyl, C 1-6 alkoxy, acetyl, halogen, haloC 1-6 alkyl, cyano, nitro, amino, monoC 1-4 alkylamino and diC 1-4 alkylamino.