Patent ID: 6967205

Claim:
A compound having the formula (I): wherein R 1 is selected from the group consisting of a cyclopropyl group and an ethyl group; R 2 is selected from the group consisting of H and F; R 3 is selected from the group consisting of a 4-carboxycyclohexyl group, a 4-pyridinylmethyl group, 4-carboxybenzyl group, a 4-carboxyphenyl group, a [(trifluoromethyl)sulfonyl)]aminopropyl group, 2,2-dimethyl-3-[(trifluoromethyl)sulfony]aminopropyl group, a 2-[(trifluoromethyl)sulfonyl]aminoethyl group, a 5-bromo-2-pyrldinyl group, a tetrahydro-2-furanylmethyl group, a 2-(1-pyrrolidinyl)ethyl group, a 2-naphtylsulfonyl group, a 2-(4-pyridinyl)ethyl group, and a 2-(2-pyridinyl)ethyl group; R 4 is selected from the group consisting of a (tifluoromethyl)sulfonyl group, a 2-thiophenylcarbonyl group, an acetoacetyl group, a 4-fluorophenylsulfonyl group, a 4-nitrophenyl group, and a tetrahydro-2-furanylmethyl group; or R 3 and R 4 , together with the nitrogen to which they are attached, form a piperazinyl group substituted with a methyl group, a (4-nitrophenyl)sulfonyl group, an anilinocarbothioyl group, a 2-naphtylsulfonyl group, a (2,4,6-triisopropyl-phenyl)sulfonyl group, a (4-nitroanilino)carbothioyl group, a (4-fluoroanilino)carbothioyl group, a (6-chloro-2-pyrazinyl)-4-fluoroanilino carbthioyl group, a mesitylsulfonyl group, a benzylsulfonyl group, a (5-chloro-2-thienyl)sulfonyl group, a (4-nitroanilino)carbonyl group, a (2-iodoanilino)carbothioyl group, a (4-cyanoanilino)carbothioyl group, a (4-chlorobenzothioyl) group, a (2,4-dichloroanilino)carbothionyl group, a (2-chloro-4-nitroanilino)carbothioyl group, a 6-chloro-2-pyridinyl group, a (6-chloro-2-pyridinyl)-4-fluoroanilino)carbothioyl group, a 6-chloro-2-pyrazinyl group, and a (trifluoromethyl)sulfonyl group; or R 3 and R 4 , together with the nitrogen to which they are attached, form a piperidinyl group substituted with a a 4-{[anilinocarbothioyl)amino]methyl} group.