Patent ID: 7164024

Claim:
Benzimidazolone compounds represented by formula (I) in which A ring stands for a 5- to 8-membered aliphatic heterocyclic ring containing one nitrogen atom; R 1 binds to the benzene ring, standing for hydrogen, halogen, lower alkyl or lower alkoxy; R 2 stands for hydrogen or optionally phenyl-substituted lower alkyl; R 3a and R 3b stand for hydrogen or R 3 , R 3a standing for hydrogen when R 3b stands for R 3 and R 3a standing for R 3 when R 3b stands for hydrogen; R 3 stands for hydrogen, halogen, hydroxyl, lower alkyl or lower alkenyl, or R 3 and R 4 together form a 3- to 6-membered carbocyclic ring with the carbon atoms to which they bind; R 4 and R 5 which are the same or different and bind to optional carbon atoms constituting said heterocyclic ring, stand for hydrogen, halogen, hydroxyl, lower alkyl or lower alkenyl, or R 4 and R 5 together form methylene group with the carbon atoms to which they bind, or R 3 and R 4 together form a 3- to 6-membered carbocyclic ring with the carbon atoms to which they bind, or R 4 and R 5 together form a 3- to 6-membered carbocyclic ring together with the carbon atoms to which they bind; R 6 stands for aryl or heteroaryl which may have one, two or more substituents selected from the group consisting of halogen, cyano, nitro, lower alkyl, lower alkenyl, lower alkynyl, lower cycloalkyl, halogenated lower alkyl, lower alkylamino, di-lower alkylamino, lower alkylthio, lower alkylsulfonyl, optionally fluorine-substituted lower alkoxy, lower acyl, lower acylamino, lower alkoxycarbonyl, carbamoyl, lower alkylcarbamoyl, di-lower alkylcarbamoyl, sulfamoyl, lower alkylsulfamoyl, di-lower alkylsulfamoyl, carbamoyloxy, lower alkylcarbamoyloxy, di-lower alkylcarbamoyloxy, lower alkoxycarbonylamino, sulfamoylamino, (lower alkylsulfamoyl)amino, (di-lower alkylsulfamoyl)amino, (lower alkylsulfamoyl)(lower alkyl)amino, (di-lower alkylsulfamoyl)(lower alkyl)amino, (lower alkylsulfonyl)amino, carbamoylamino, (lower alkylcarbamoyl)amino, (di-lower alkylcarbamoyl)amino and phenoxy; and Z stands for carbonyl (—CO—) or sulfonyl (—SO 2 —) or salts thereof.