Patent ID: 8907089

Claim:
A compound represented by a following formula: wherein X C is NR C1 , wherein R C1 is methyl; R C2 is a carbamoyl group having 1 or 2 substituents selected from the group consisting of (1) a 4- to 7-membered non-aromatic heterocyclic group containing 1 to 4 hetero atoms selected from an oxygen atom, a sulfur atom and a nitrogen atom, optionally having from 1 to 3 substituents selected from the group consisting of (a) a C 1-6 alkyl-carbonyl group optionally having from 1 to 3 hydroxy groups, and (b) an oxo group; (2) a C 3-8 cycloalkyl group optionally having from 1 to 3 substituents selected from the group consisting of (a) a hydroxy group, (b) a C 1-6 alkyl group optionally having from 1 to 3 hydroxy groups, (c) a carbamoyl group, (d) a cyano group, (e) a C 2-6 alkynyl group, and (f) a 5-membered aromatic heterocyclic group; (3) a C 1-6 alkyl group having one substituent selected from the group consisting of (a) an amino group having 1 or 2 C 1-6 alkyl groups optionally having from 1 to 3 hydroxy groups, (b) a C 6-10 aryl group optionally having from 1 to 3 C 1-6 alkylsulfonyl groups, (c) a 4- to 7-membered non-aromatic heterocyclic group containing 1 to 4 hetero atoms selected from an oxygen atom, a sulfur atom and a nitrogen atom optionally having from 1 to 3 oxo groups, (d) a 5-membered aromatic heterocyclic group, (e) a hydroxy group, and (f) a C 1-6 alkoxy group; (4) a C 6-10 aryl group optionally having from 1 to 3 halogen atoms; (5) a 5- to 6-membered aromatic heterocyclic group; and (6) a C 2-6 alkynyl group; R C3 is a C 1-6 alkoxy group optionally having from 1 to 3 halogen atoms; R C5 is a C 6-10 aryl group optionally having from 1 to 3 substituents selected from the group consisting of (a) a halogen atom, (b) a C 1-6 alkyl group optionally having from 1 to 3 halogen atoms, and (c) a C 1-6 alkoxy group R C6 is a C 1-6 alkyl group; and R C7 is a hydrogen atom, or a salt thereof.