Patent ID: 8350042

Claim:
A compound of Formula (I) or a pharmaceutically acceptable salt thereof: wherein: X is NH, O, S, or (CH 2 ) n1 , wherein n 1 is 1 to 6; A is O or S; B is O or S; each R 1 and R 2 , independently, is —CONH 2 , or a substituted or unsubstituted —C 1-6 alkyl, a substituted or unsubstituted aryl, a substituted or unsubstituted heteroaryl, a substituted or unsubstituted —(CH 2 ) n aryl, a substituted or unsubstituted —(CH 2 ) n heteroaryl, a substituted or unsubstituted —(CH 2 ) n heterocycloalkyl, a substituted or unsubstituted —(CH═CH) n aryl, a substituted or unsubstituted —(CH═CH) n heteroaryl, a substituted or unsubstituted —C 2-6 alkenyl-aryl, a substituted or unsubstituted —C 2-6 alkenyl-heteroaryl, a substituted or unsubstituted —(C≡C) n aryl, a substituted or unsubstituted —(C≡C) n heteroaryl, a substituted or unsubstituted —NR 3 —C 1-6 alkyl, a substituted or unsubstituted —NR 3 -aryl, a substituted or unsubstituted —NR 3 -heteroaryl, a substituted or unsubstituted —NR 3 -cycloalkyl, a substituted or unsubstituted —NR 3 -heterocycloalkyl, a substituted or unsubstituted —NHNH—C 1-6 alkyl, a substituted or unsubstituted —NHNH-aryl, a substituted or unsubstituted —NHNH-heteroaryl, a substituted or unsubstituted —NHNH-cycloalkyl, a substituted or unsubstituted —NHNH-heterocycloalkyl, a substituted or unsubstituted —O—C 1-6 alkyl, a substituted or unsubstituted —O-aryl, a substituted or unsubstituted —O-heteroaryl, a substituted or unsubstituted —O-cycloalkyl, a substituted or unsubstituted —O-heterocycloalkyl, —S(C 1-6 ) alkyl, a substituted or unsubstituted —S-aryl, a substituted or unsubstituted —S-heteroaryl, a substituted or unsubstituted —S-cycloalkyl, a substituted or unsubstituted —S-heterocycloalkyl, a substituted or unsubstituted —(C═O)(C 1-6 ) alkyl, a substituted or unsubstituted —(C═O) aryl, a substituted or unsubstituted —(C═O) heterocycloalkyl, n being an integer from 1 to 4; and R 3 is —H or a substituted or unsubstituted alkyl, aryl, heteroaryl, cycloalkyl, or heterocycloalkyl.