Patent ID: 7858627

Claim:
A compound of formula II: wherein: the bond represented by is a single bond or a double bond; X is CH or N; Y is CH or N when the bond represented by is a double bond, or Y is CH 2 or NR x when the bond represented by is a single bond; one of R 1 and R 2 is nitro, halo, or (C 1 -C 6 )alkoxy and the other is hydrogen, nitro, halo, or (C 1 -C 6 )alkoxy; or R 1 and R 2 taken together are methylenedioxy; one of R 3 and R 4 is nitro, halo, or (C 1 -C 6 )alkoxy and the other of R 3 and R 4 is hydrogen, nitro, halo, or (C 1 -C 6 )alkoxy; or R 3 and R 4 taken together are methylenedioxy; R 5 is a solubilizing group; and R x is hydrogen or (C 1 -C 6 )alkyl; or a pharmaceutically acceptable salt thereof.