Patent ID: 7547693

Claim:
A compound of the formula (I): wherein: X 1 and X 2 represent CH; X 3 represents —O s —(CH 2 ) m —, wherein s indicates 0 or 1, and m indicates an integer to make (m+s)=0, 1, 2, 3 or 4; R 1 and R 2 independently represent a hydrogen atom, a halogen atom, a linear or branched lower alkyl group, a lower alkoxy group, or an acetyl group substituted with 2 or 3 fluorine atoms; Y is selected from the group consisting of: (1) a group of the formula (IV): wherein: R 3 is a hydrogen atom, or a lower alkyl group, and R 4 is a group of the formula (V): wherein R 5 represents a hydrogen atom, a lower alkyl group, a C3 to C8 cycloalkyl group, an aralkyl group, or a heteroaryl group; n indicates 0 or an integer which is 1, 2, 3 or 4; (2) a group of the formula (IV): wherein R 3 is a hydrogen atom, or a lower alkyl group, and R 4 is a group of the formula (VI): —(CH 2 ) q -A (VI) wherein A represents a phenyl group, a thienyl group or a pyridyl group; q indicates an integer which is 1, 2 or 3; and (3) a group of the formula (IV): wherein R 3 and R 4 form a nitrogen-containing heterocyclic group which is joined with the nitrogen atom to which they bond; or a pharmaceutically-acceptable salt thereof.