Patent ID: 7998956

Claim:
A compound of the following formula [I]: wherein Ring A is a benzene ring optionally substituted by one to three group(s) selected from (a) a halogen atom, (b) a C 1-6 alkyl group, said alkyl group being optionally substituted by one to three group(s) selected from a halogen atom, a hydroxyl group, and a C 1-6 alkoxy group, (c) a hydroxyl group, (d) a C 1-6 alkoxy group, (e) an amino group, (f) a cyano group, (g) a C 2-12 alkenyl group, (h) a C 1-7 alkanoyl group, and (j) a C 3-10 cycloalkyl group, R 1 is located at the 7-position of the 1,4-benzoxazine moiety and is a group of the formula: R a SO 2 NH—, R a SO 2 NH—CH 2 — or (R b )(R c )NSO 2 —, wherein R a is a C 1-6 alkyl group, a C 3-10 cycloalkyl group, an amino group optionally substituted by one or two C 1-6 alkyl group(s), a 6- to 10-membered monocyclic or bicyclic aryl group, or a 5- to 10-membered monocyclic or bicyclic heteroaryl group containing one to two heteroatom(s) selected from an oxygen atom, a sulfur atom, and a nitrogen atom, R b and R c are the same or different and are each a hydrogen atom, a C 1-6 alkyl group, or a C 3-10 cycloalkyl group, one of R 2 and R 3 is a hydrogen atom, a halogen atom, or a C 1-6 alkyl group, and the other is a hydrogen atom, a C 1-6 alkyl group, a C 1-6 alkoxycarbonyl group, or a phenyl group, or both R 2 and R 3 combine each other together with the adjacent carbon atom to form a C 3-10 cycloalkyl group, X is an oxygen atom, Y is a group of the formula: —C(═O)—, —C(═S)—, or —CH(R 5 )—, wherein R 5 is a hydrogen atom or a phenyl group, Ar is a 6- to 10-membered monocyclic or bicyclic aryl group or a 5- to 10-membered monocyclic or bicyclic heteroaryl group containing one to two heteroatom(s) selected from an oxygen atom, a sulfur atom, and a nitrogen atom, and said aryl or heteroaryl group is optionally substituted by one to three group(s) selected from (a) a halogen atom, (b) a hydroxyl group, (c) a cyano group, (d) a C 1-6 alkyl group optionally substituted by one to three halogen atom(s), (e) a hydroxyl-C 1-6 alkyl group, (f) a benzoyloxymethyl group, (g) a C 1-6 alkoxy group optionally substituted by one to three halogen atom(s), (h) a C 1-6 alkoxycarbonyl-C 1-6 alkoxy group, (i) a C 1-6 alkylthio group, (j) a C 1-6 alkylenedioxy group optionally substituted by one to two halogen atom(s), (k) an amino group optionally substituted by one to two C 1-6 alkyl group(s), (l) an acylamino group, said acyl group being a C 1-6 alkanoyl group or a benzoyl group, (m) C 3-10 cycloalkyl group, and (n) a C 1-6 alkylsulfonyl group, and Q is a single bond, a C 1-6 alkylene group or a C 1-6 alkenylene group, or a pharmaceutically acceptable salt thereof.