Patent ID: 7977371

Claim:
A compound represented by the following general formula (I) or a salt thereof: [wherein the ring A represents a benzene ring or a monocyclic aromatic heterocyclic ring; R 1 represents a halogen atom, a hydrogen atom, a lower alkyl group which may have a substituent, a formyl group or a lower alkylcarbonyl group which may have a substituent; R 2 represents a halogen atom, a lower alkyl group which may have a substituent, a lower alkenyl group which may have a substituent, a lower alkynyl group which may have a substituent, a lower cycloalkyl group which may have a substituent, an aryl group which may have a substituent, a heterocyclic group which may have a substituent, a hydroxy group, a lower alkoxy group which may have a substituent, a lower alkenyloxy group which may have a substituent, a lower alkynyloxy group which may have a substituent, a lower cycloalkyloxy group which may have a substituent, an aryloxy group which may have a substituent, a heterocyclic oxy group which may have a substituent, a formyl group, a lower alkylcarbonyl group which may have a substituent, an arylcarbonyl group which may have a substituent, a carboxy group, a lower alkoxycarbonyl group which may have a substituent, an aryloxycarbonyl group which may have a substituent, a lower alkylcarbonyloxy group which may have a substituent, an arylcarbonyloxy group which may have a substituent, a mercapto group, a lower alkylthio group which may have a substituent, a lower cycloalkylthio group which may have a substituent, an arylthio group which may have a substituent, a lower alkylsulfinyl group which may have a substituent, an arylsulfinyl group which may have a substituent, a lower alkylsulfonyl group which may have a substituent, an arylsulfonyl group which may have a substituent, a cyano group, a nitro group, —NR a1 R a2 , —CONR b1 R b2 , —SON c1 R c2 , —SO 2 NR d1 R d2 or —OCONR e1 R e2 ; R 3 represents a hydrogen atom, a lower alkyl group which may have a substituent, an aryl group which may have a substituent or an acyl group which may have a substituent; R a1 , R a2 , R b1 , R b2 , R c1 , R c2 , R d1 , R d2 , R e1 and R e2 are the same or different and represent a hydrogen atom, a lower alkyl group which may have a substituent or an aryl group which may have a substituent, and further, R a1 and R a2 , R b1 and R b2 , R c1 and R c2 , R d1 and R d2 or R e1 and R e2 may be joined to each other to form a nitrogen-containing heterocyclic ring which may have a substituent; n represents 0, 1, 2, 3, 4 or 5; and provided that when n is 2, 3, 4 or 5, R 2 may be the same or different].