Patent ID: 8232283

Claim:
A compound having a structure represented by formula (I) or any tautomeric form thereof, wherein R 1 is selected from hydrogen, —NH 2 , and substituted or unsubstituted: —NH—C 1-6 -alkyl, —NH-cycloalkyl, —NH-heterocycloalkyl, —NH—C 1-6 -alkylene-OR 7 , and —NH—C 1-6 -alkylene-NR 7 2 ; R 2 is selected from hydrogen, -halogen, -methyl, —CH 2 F, —CHF 2 , —CF 3 , —O—methyl, —O—CH 2 F, —O—CHF 2 , and —O—CF 3 ; one of R 3 and R 4 is hydrogen, and the other is —NH—C(═O)—(NH) x —(CH 2 ) y —R 6 , wherein x and y are independently selected from 0 and 1; R 5 is selected from hydrogen, and substituted or unsubstituted: -alkyl, -alkenyl, -alkynyl, -cycloalkyl, -cycloalkenyl, —(C-linked-heterocycloalkyl), —(C-linked-heterocycloalkenyl), -aryl, and -heteroaryl; R 6 is selected from substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl; R 7 is independently selected from hydrogen and —C 1-6 -alkyl; or any pharmaceutically acceptable salt or N-oxide thereof; provided, however, that compound (A) is excluded: