Patent ID: 8609847

Claim:
A dihydroquinolinone derivative represented by formula (1) or a pharmaceutically acceptable salt thereof: wherein Q represents the following formula (A) or (B): R 1 represents a hydrogen atom, a halogen atom or C 1 -C 6 alkyl, R 2 represents a hydrogen atom or C 1 -C 6 alkyl, n represents 1 or 2, R 3 and R 4 , which may be the same or different, each represent C 1 -C 6 alkyl or C 3 -C 7 cycloalkyl, or R 3 and R 4 are attached to each other together with their adjacent nitrogen atom to form a 3- to 7-membered saturated heterocyclic ring (wherein said saturated heterocyclic ring may be substituted with one or two C 1 -C 6 alkyls), R 5 represents C 1 -C 6 alkyl (wherein said C 1 -C 6 alkyl may be substituted with one or two C 3 -C 7 cycloalkyls) or C 3 -C 7 cycloalkyl (wherein said C 3 -C 7 cycloalkyl may be substituted with one or two C 1 -C 6 alkyls), and P represents aryl, heteroaryl or heterocyclyl wherein said aryl, heteroaryl or heterocyclyl may be substituted with the same or different 1 to 3 substituents selected from the group consisting of: a halogen atom, C 1 -C 6 alkyl (wherein said C 1 -C 6 alkyl may be substituted with 1 to 3 halogen atoms, hydroxys, C 1 -C 6 alkoxys or C 2 -C 12 dialkylaminos), C 1 -C 6 alkoxy (wherein said C 1 -C 6 alkoxy may be substituted with 1 to 3 halogen atoms), amino, C 1 -C 6 alkylamino, C 2 -C 12 dialkylamino, C 2 -C 7 alkanoyl, C 4 -C 8 cycloalkylcarbonyl, cyano, C 2 -C 7 alkoxycarbonyl, C 2 -C 7 alkylaminocarbonyl, C 3 -C 13 dialkylaminocarbonyl, carbonyl attached to a monocyclic saturated heterocyclic ring which contains one or more nitrogen atoms in the ring and may further contain an oxygen or sulfur atom, carbamoyl, heteroaryl, heterocyclyl (wherein said heterocyclyl may be substituted with one or two C 1 -C 6 alkyls), and heteroaryloxy (wherein said heteroaryloxy may be substituted with one or two C 1 -C 6 alkyls).