Patent ID: 8785459

Claim:
A compound having a structure represented by formula (II) wherein X is N; Y is NH; wherein the heteroaryl attached to Y is selected from: wherein each of R 5 , R 6 , and R 7 , independently, is H, halo, nitro, cyano, aryl, heteroaryl, alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, cycloalkenyl, heterocycloalkenyl, —OR a , —C(O)R a , —C(O)NR a R b , —NR a C(O)R b , —NR a R b , —S(O) 2 R a , —S(O) 2 NR a R b , —NR a S(O) 2 R b , —N═CR a R b , or —NR a C(O)NHR b , wherein each of R a and R b , independently, is H, alkyl, alkenyl, alkynyl, aryl, aryloxy, alkoxy, hydroxy, heteroaryl, cycloalkyl, heterocycloalkyl, cycloalkenyl, or heterocycloalkenyl, or R a and R b , together with the nitrogen atom to which they are bonded, form heteroaryl, heterocycloalkyl, or heterocycloalkenyl; one of R 1 and R 2 is —OH or —OR a and the other of R 1 and R 2 is —H, OH, or —OR a , R 3 , and R 4 are independently H or —OR a , wherein R a is alkyl.