Patent ID: 7947688

Claim:
A compound of formula (I): as well as pharmaceutically acceptable salts thereof; wherein R 1 is selected from the group consisting of alkyl(C 1 -C 6 ), alkenyl(C 2 -C 6 ), ω,ω,ω-trifluoroalkyl(C 1 -C 6 ), cycloalkyl(C 3 -C 6 ), cycloalkyl(C 3 -C 6 )alkyl(C 1 -C 6 ), phenyl, monosubstituted phenyl, disubstituted phenyl, phenylalkyl(C 1 -C 6 ), phenylalkenyl(C 2 -C 6 ), furyl, substituted furyl, isoxazolyl, substituted isoxazolyl, pyrazolyl, substituted pyrazolyl, thienyl, substituted thienyl, thiazolyl, substituted thiazolyl, pyridyl and substituted pyridyl; R 2 is selected from the group consisting of hydrogen, alkyl(C 1 -C 6 ), alkenyl(C 2 -C 6 ), alkynyl(C 2 -C 6 ) and cycloalkyl(C 3 -C 6 ); R 3 is selected from the group consisting of —CN and —COR 6 wherein R 6 is selected from the group consisting of hydrogen, alkyl(C 1 -C 6 ), alkenyl(C 2 -C 6 ), alkynyl(C 2 -C 6 ), cycloalkyl(C 3 -C 6 ), phenyl, monosubstituted phenyl, disubstituted phenyl, phenylalkyl(C 1 -C 6 ), phenylalkenyl(C 2 -C 6 ), furyl, substituted furyl, thienyl, substituted thienyl, thiazolyl, substituted thiazolyl, oxadiazolyl, substituted oxadiazolyl, pyridyl and substituted pyridyl; with the proviso that simultaneously: R 1 may not be p-tolyl and R 2 methyl and R 3 benzoyl; and R 1 may not be p-tolyl and R 2 ethyl and R 3 furyl-2-carbonyl.