Patent ID: 7112605

Claim:
A sulfonyl-containing 3,4-diaryl-3-pyrrolin-2-ones compound having the formula (I) wherein R 1 is selected from the group consisting of 4-methylsulfonyl, 4-aminosulfonyl, hydrogen, 2-, 3-, or 4-halogen, C 1 –C 6 -alkyl, cyclopentyl, cyclohexyl, C 1 –C 4 -alkoxy, hydroxy, cyano, nitro, amino and trifluoromethyl; R 2 is selected from the group consisting of 4-methylsulfonyl, 4-aminosulfonyl, hydrogen, 2-, 3-, or 4-halogen, C1–C6-alkyl, cyclopentyl, cyclohexyl, C 1 –C 4 -alkoxy, hydroxy, cyano, nitro, amino and trifluoromethyl; and R 3 is selected from the group consisting of hydrogen, methyl, ethyl, n-propyl, i-propyl, c-propyl, n-butyl, isobutyl; provided that when R 1 is a methylsulfonyl or aminosulfonyl group, R 2 is any group as defined above except a methylsulfonyl or aminosulfonyl group; and when R 2 is a methylsulfonyl or aminosulfonyl group, R 1 is any group as defined above except a methylsulfonyl or aminosulfonyl group; with the further proviso that at least one of R 1 or R 2 is selected from either a methylsulfonyl group or an aminosulfonyl group.