Patent ID: 6875764

Claim:
A compound having the general formula (I): wherein Y is selected from O and S; R 1 is selected from the group consisting of 4-chloro-3-trifluoromethyl phenyl, N-hexahydrocyclopental[c]pyrrol-2(1H)-yl, 4-methylphenyl, 5-isophthalyl, 6-nitro-1,3-benzothiazol-2-yl, 4-(morpholino)ethyl, 4-cyanophenyl N-3-chloro-2,5,6-trifluoro-4-pyridinyl, 3-chloro-2,5,6-trifluoro-4-pyridinyl, 2,4,5-trihydroxyphenethyl, 3-carboxylphenyl, -3-(1adamantanecarboxylic acid), 2,3-dihydro-1H-inden-5-sulfonyl, 4-chlorophenyl, 3,4,5-trimethoxyphenyl, tetrahydro-2-furanylmethyl, 5-chloro-2-pyridinyl, 5-chloro-2-pyrazinyl, 4-carboxy-3-hydroxy-phenyl, 6-chloro-2-pyrazinyl, 4-fluorophenyl and 1-carboxy-cyclopentyl; R 2 is selected from the group consisting of (4-fluorophenyl)sulfonyl, (4-nitrophenyl)sulfonyl, 2,2,2-trifluoroethyl, 2-naphtylsulfonyl, 5-bromo-2-pyridinyl, 6-chloro-2-pyrazinyl, and phenyl-sulfonyl; R 3 is selected from the group consisting of (4-fluorophenyl)sulfonyl, (4-nitrophenyl)sulfonyl, 6-chloro-2-pyrazinyl, 2-naphtylsulfonyl, 5-bromo-2-pyridinyl, 4-cyanophenyl, and phenyl-sulfonyl; and R 4 is selected from the group consisting of 4-nitrophenyl, (4-nitrophenyl)sulfonyl, 4-fluorophenyl, 4-phthalyl, 8-chloro-5-quinolinyl, cyclohexyl, methyl-4-cyclohexancarboxylic acid, phenyl, 3,5-diiodo-4-carboxyphenyl.