Patent ID: 7915293

Claim:
A compound having the structure: or a pharmaceutically acceptable salt thereof, wherein R 1 is selected from CF 3 -phenyl, 1-chloro-4-fluorophenyl, 2,4-difluorophenyl, 3,5-dichlorophenyl; R 2 is H, C 1 -C 6 -hydrocarbyl, or aryl; R 3 is —H, —Cl, or —NO 2 ; R 4 is —H, —Cl, or —NO 2 ; R 5 is —H or —NO 2 ; R 6 is —H or —Cl; R 7 is —H or —Cl; R 8 is —H or —Cl; R 9 is —H or —F; R 18 is —H, C 1 -C 6 -hydrocarbyl, —C(O)R 19 , —SO 2 R 19 , C(O)NHR 19 , CSNHR 19 , CNNHR 19 , or CO 2 R 19 ; R 19 is —H, —OH, or C 1 -C 3 -hydrocarbyl; and Y is —O—, —S—, —S(O)—, or —SO 2 —; wherein each of the aryl, and hydrocarbyl group of R 2 is optionally substituted by one or more groups selected from halo, —OH, —NH 2 , C 1 -C 6 -hydrocarbyl-C(O)—, oxo, C 1 -C 6 -hydrocarbyl-(O)—, mono- to per-halogenated C 1 -C 6 -hydrocarbyl-O—, C 1 -C 6 -hydrocarbyl, mono- to per-halogenated C 1 -C 6 -hydrocarbyl, —CN, —NO 2 , —NO, —NH 2 , —NH—C(O)R 18 , or —SO 2 ; and provided that the compound is not the following combination: R 1 R 2 R 3 R 4 R 5 R 6 R 7 R 8 R 9 3,5-dichlorophenyl H Cl Cl NO 2 H Cl H H.