Patent ID: 7550463

Claim:
A compound represented by the formula: wherein Y is NH; R A is 1) a group represented by the formula: —COR 5 , wherein R 5 is a group selected from a substituent group A, wherein substituent group A is hydrogen, hydroxy, optionally substituted lower alkyl, optionally substituted lower alkoxy, optionally substituted cycloalkyl, optionally substituted cycloalkyloxy, optionally substituted amino, optionally substituted aminooxy, optionally substituted heterocyclic group, optionally substituted heterocyclic oxy, optionally substituted aryl, optionally substituted aryloxy, optionally substituted aralkyl, optionally substituted aralkyloxy, formyl, carboxy, optionally substituted lower alkanoyl, optionally substituted lower alkoxycarbonyl, optionally substituted carbamoyl, optionally substituted heterocyclic carbonyl, optionally substituted cycloalkylcarbonyl, or optionally substituted arylcarbonyl; or 2) a group represented by the formula: wherein a C ring is an optionally substituted nitrogen-containing aromatic heterocycle in which, among atoms adjacent to an atom having a bond, at least one atom is an unsubstituted nitrogen atom, and a broken line represents the presence or the absence of a bond; R 1 is hydrogen or lower alkyl; X is a single bond, a hetero atom group selected from O, S, SO, SO 2 and NH, or lower alkylene or lower alkenylene in which the hetero atom group may intervene; R 2 is a group selected from the substituent group A; R 3 is hydrogen, halogen, hydroxy, optionally substituted lower alkyl, optionally substituted lower alkenyl, optionally substituted lower alkoxy, optionally substituted amino, optionally substituted lower alkylamino, optionally substituted cycloalkyl, optionally substituted cycloalkyl lower alkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heterocyclic group, or optionally substituted heterocyclic lower alkyl; or a pharmaceutically acceptable salt thereof.