A compound of formula wherein R 1 is selected from H, CN, NO 2, NCS, SCN, F, Cl, Br, I, and OCF 3; R 2 is H; R 3 is a moiety selected from and wherein R 5 and R 6 are each individually selected from H, acyl, and C 1-6 alkyl; R 7 is selected from H, halo, NO 2, cyano, OH, alkoxy, mercapto, thioalkoxy, amino, C 1-6 alkyl, C 1-7 haloalkyl, heterocycloalkyl, and aryl; wherein the linker is designated as X; and X is selected from -CH 2 -, -CH 2 CH 2 -, -O-, -OCH 2 -, -CH 2 O-, -NR 8 -, -CH 2 NR 8 -, and -NR 8 CH 2 -; wherein R 8 is selected from H and C 1 -C 6 alkyl; and q is 0 to 4; R 4 is independently selected from H, halo, OH, CN, NO 2, sulfonato, formyl, carboxy, mercapto, amido, amino, or a moiety selected from alkyl, alkenyl, alkynyl, aryl alkyl, aryl, heterocycloalkyl, heteroaryl, heteroaryl alkyl, hydroxyalkyl, haloalkyl, aminoalkyl, alkoxy, aryloxy, thioalkoxy, acyl, acyloxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylamino, and dialkylamino, and wherein each moiety is optionally further substituted with one or more substituents selected from alkyl, alkenyl, alkynyl, aryl alkyl, aryl, heterocycloalkyl, heteroaryl, heteroaryl alkyl, hydroxyalkyl, haloalkyl, aminoalkyl, alkoxy, aryloxy, thioalkoxy, acyl, acyloxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylamino, and dialkylamino; m is independently 0 to 5; n and o are independently 0 to 4; and p is 1; or a pharmaceutically acceptable salt thereof. R 1 is selected from H, CN, NO 2, NCS, SCN, F, Cl, Br, I, and OCF 3; R 2 is H; R 3 is a moiety selected from and wherein R 5 and R 6 are each individually selected from H, acyl, and C 1-6 alkyl; R 7 is selected from H, halo, NO 2, cyano, OH, alkoxy, mercapto, thioalkoxy, amino, C 1-6 alkyl, C 1-7 haloalkyl, heterocycloalkyl, and aryl; wherein the linker is designated as X; and X is selected from -CH 2 -, -CH 2 CH 2 -, -O-, -OCH 2 -, -CH 2 O-, -NR 8 -, -CH 2 NR 8 -, and -NR 8 CH 2 -; wherein R 8 is selected from H and C 1 -C 6 alkyl; and q is 0 to 4; R 4 is independently selected from H, halo, OH, CN, NO 2, sulfonato, formyl, carboxy, mercapto, amido, amino, or a moiety selected from alkyl, alkenyl, alkynyl, aryl alkyl, aryl, heterocycloalkyl, heteroaryl, heteroaryl alkyl, hydroxyalkyl, haloalkyl, aminoalkyl, alkoxy, aryloxy, thioalkoxy, acyl, acyloxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylamino, and dialkylamino, and wherein each moiety is optionally further substituted with one or more substituents selected from alkyl, alkenyl, alkynyl, aryl alkyl, aryl, heterocycloalkyl, heteroaryl, heteroaryl alkyl, hydroxyalkyl, haloalkyl, aminoalkyl, alkoxy, aryloxy, thioalkoxy, acyl, acyloxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylamino, and dialkylamino; m is independently 0 to 5; n and o are independently 0 to 4; and p is 1; or a pharmaceutically acceptable salt thereof. R 5 and R 6 are each individually selected from H, acyl, and C 1-6 alkyl; R 7 is selected from H, halo, NO 2, cyano, OH, alkoxy, mercapto, thioalkoxy, amino, C 1-6 alkyl, C 1-7 haloalkyl, heterocycloalkyl, and aryl; wherein the linker is designated as X; and X is selected from -CH 2 -, -CH 2 CH 2 -, -O-, -OCH 2 -, -CH 2 O-, -NR 8 -, -CH 2 NR 8 -, and -NR 8 CH 2 -; wherein R 8 is selected from H and C 1 -C 6 alkyl; and q is 0 to 4; R 4 is independently selected from H, halo, OH, CN, NO 2, sulfonato, formyl, carboxy, mercapto, amido, amino, or a moiety selected from alkyl, alkenyl, alkynyl, aryl alkyl, aryl, heterocycloalkyl, heteroaryl, heteroaryl alkyl, hydroxyalkyl, haloalkyl, aminoalkyl, alkoxy, aryloxy, thioalkoxy, acyl, acyloxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylamino, and dialkylamino, and wherein each moiety is optionally further substituted with one or more substituents selected from alkyl, alkenyl, alkynyl, aryl alkyl, aryl, heterocycloalkyl, heteroaryl, heteroaryl alkyl, hydroxyalkyl, haloalkyl, aminoalkyl, alkoxy, aryloxy, thioalkoxy, acyl, acyloxy, alkoxycarbonyl, alkoxycarbonyloxy, alkylamino, and dialkylamino; m is independently 0 to 5; n and o are independently 0 to 4; and p is 1;