Patent ID: 8669246

Claim:
A compound of the formula (I) or a salt thereof: wherein A is aryl which may be substituted or an aromatic hetero ring group which may be substituted, B is a 5-membered aromatic hetero ring group which may be substituted, X is a single bond or —(CR X1 R X2 ) n —, n is 1, 2, 3, or 4, R X1 and R X2 are the same as or different from each other, and are H, halogen, OH, —O— (lower alkyl which may be substituted), or lower alkyl which may be substituted, or R X1 and R X2 are combined with each other to form oxo (═O), or R X1 and R X2 are combined with each other to form C 2-5 alkylene which may be substituted, in which when n is 2, 3, or 4, R X1 may be combined with adjacent R X1 to form a new bond, Y 1 , Y 2 , Y 3 , Y 4 , and Y 5 are the same as or different from each other, and are CR Y or N, R Y 's are the same as or different from each other, and are H, OH, halogen, —O-(lower alkyl which may be substituted), —S-(lower alkyl which may be substituted), lower alkyl which may be substituted, lower alkenyl which may be substituted, or cycloalkyl which may be substituted, R 1 and R 2 are the same as or different from each other, and are H, halogen, —O-(lower alkyl which may be substituted), or lower alkyl which may be substituted, m is 1, 2, or 3, R 3 is H, or lower alkyl which may be substituted, R 4 is lower alkyl which may be substituted, lower alkenyl which may be substituted, cycloalkyl which may be substituted, aryl which may be substituted, a hetero ring group which may be substituted, or NR 101 R 102 , or R 3 and R 4 may be combined with each other to form C 2-5 alkylene which may be substituted, and R 101 and R 102 are the same as or different from each other, and are H, OH, —O-(lower alkyl which may be substituted), —C(═O)-(lower alkyl which may be substituted), —C(═O)—O-(lower alkyl which may be substituted), —NH—C(═O)-(lower alkyl which may be substituted), lower alkyl which may be substituted, lower alkenyl which may be substituted, cycloalkyl which may be substituted, aryl which may be substituted, or a hetero ring group which may be substituted, or R 101 and R 102 may be combined with nitrogen atoms to which they are bonded to form nitrogen-containing monocyclic saturated hetero ring group, in which when R 4 is NR 101 R 102 , at least one of R 3 , R 101 , and R 102 is H.