Patent ID: 7071216

Claim:
A compound of the formula (I): wherein, X 1 and X 2 are ═N— or —NR 4 —, provided that if X 1 is —NR 4 —, then X 2 is ═N—, or if X 2 is —NR 4 —, then X 1 is ═N—; Y is O or S; A 1 is substituted or unsubstituted alkyl, cycloalkyl, heterocycloalkyl, aryl, polycyclic aryl, polycyclic arylalkyl, heteroaryl, biaryl, heteroarylaryl, heteroarylheteroaryl, cycloalkylalkyl, heterocycloalkylalkyl, arylalkyl, heteroarylalkyl, biarylalkyl, or heteroarylarylalkyl; A 2 is substituted or unsubstituted heteroaryl; R 1 is O or H, and R 2 is NR 5 R 6 or hydroxyl; or R 1 is taken together with R 2 to form a substituted or unsubstituted heterocycloalkyl or heteroaryl group; wherein, the dashed line represents a single or double bond, provided that represents a double bond when R 1 is O and represents a single bond when R 1 is H; R 3 is hydrogen, halogen, loweralkyl, or loweralkoxy; R 4 is hydrogen, hydroxyl, alkylamino, dialkylamino or alkyl; R 5 and R 6 are independently selected from hydrogen, and substituted or unsubstituted alkyl, alkoxyalkyl, aminoalkyl, amidoalkyl, acyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, alkyloxyalkylheterocyclo, and heteroarylalkyl; or R 5 and R 6 are taken together to form substituted or unsubstituted heterocyclo or heteroaryl; and the pharmaceutically acceptable salts, esters and prodrugs thereof.