Patent ID: 6872834

Claim:
A compound of the following formula: wherein X 1 is CH; and X 2 is NR 3 ; R 3 is H, or —SO 2 (C 1-6 alkyl); and one of Ra, Rb, Rc, Rd, and Re is WZ; and the others are of Ra, Rb, Rc, Rd, and Re being H; and W is —O—, or O—R 9 wherein R 9 is C 1-6 alkylene; and Z is NR 11 R 12 wherein each of R 11 and R 12 is independently from H, C 1-6 alkyl; or Z is piperidinyl, pyrrolidinyl, or pyridinyl, optionally substituted with one methyl or oxo moiety.