Patent ID: 7115633

Claim:
A compound of formula (I) or a derivative thereof, wherein; R is C 1-6 alkyl, C 3-7 cycloalkyl, C 1-6 alkoxy, hydroxy, halo, C 1-6 alkenyl, C 1-6 alkynyl, amino, C 1-6 alkylamino, di(C 1-6 alkyl)amino, hydroxyC 1-6 alkyl, C 1-6 alkoxyC 1-6 alkyl, aminoC 1-6 alkyl, (C 1-6 alkyl)aminoC 1-6 alkyl, di(C 1-6 alkyl)aminoC 1-6 alkyl; R 1 is hydrogen or R; R 2 is hydroxy, C 1-6 alkoxy, amino, C 1-6 alkylamino, di(C 1-6 alkyl)amino; R 3 is hydrogen or C 1-6 alkyl; R 4 and R 5 are each independently selected from the list consisting of perhaloC 1-6 alkyl, hydrogen, halo, C 1-6 alkyl, C 1-6 alkoxy, hydroxy, amino, C 1-6 alkylamino, di(C 1-6 alkyl)amino, hydroxyC 1-6 alkyl, C 1-6 alkoxyC 1-6 alkyl, aminoC 1-6 alkyl, (C 1-6 alkyl)aminoC 1-6 alkyl, di(C 1-6 alkyl)aminoC 1-6 alkyl, aryl, and COX wherein X may be hydroxy, C 1-6 alkoxy, C 1-6 alkyl, amino, C 1-6 alkylamino, or di(C 1-6 alkyl)amino; with the proviso that, when R 3 is hydrogen, then R 4 and R 5 are not both hydrogen; and wherein any alkyl group or the alkyl moiety of any group containing such a moiety may be substituted one or more times by halo.