Patent ID: 8841456

Claim:
A 1,5-naphthyridine derivative represented by Formula [1], or a salt thereof: wherein: each of R 1 , R 2 , R 3 , R 4 and R 5 independently represents a hydrogen atom, a halogen atom, a cyano group, an optionally substituted C 1-6 alkyl group, an optionally substituted C 2-6 alkenyl group, an optionally substituted C 2-6 alkynyl group, or a monovalent group represented by —OR 9 , —SR 9 , —N(R 9 ) 2 , —S(═O) n R 9 , —C(═O)R 9 , —C(═NR 9 )R 9 , —C(═N—OR 9 )R 9 , —S(═O) n N(R 9 ) 2 , —C(═O)N(R 9 ) 2 , —C(═O)OR 9 , —S(═O) n OR 9 , —C(═NR 9 )N(R 9 ) 2 , —C(═NR 9 )OR 9 , —NR 9 S(═O) n R 9 , —NR 9 C(═O)R 9 , —NR 9 C(═NR 9 )R 9 , —OC(═O)R 9 , —OC(═NR 9 )R 9 , —OS(═O) n R 9 , —NR 9 C(═O)N(R 9 ) 2 , —NR 9 C(═S)N(R 9 ) 2 , —NR 9 C(═O)OR 9 , —OC(═O)N(R 9 ) 2 , or -L-Z, wherein each of R 9 independently represents a hydrogen atom, an optionally substituted C 1-6 alkyl group, an optionally substituted C 3-8 cycloalkyl group, an optionally substituted non-aromatic heterocyclic group, an optionally substituted aryl group, or an optionally substituted heteroaryl group; n represents 1 or 2; Z represents an optionally substituted C 3-8 cycloalkyl group, an optionally substituted non-aromatic heterocyclic group, an optionally substituted aryl group, or an optionally substituted heteroaryl group; L represents a single bond or a divalent linking group containing a hydrogen atom and at least one selected from the group consisting of a carbon atom, a nitrogen atom, an oxygen atom, and a sulfur atom; R 6 represents a hydrogen atom, an optionally substituted C 1-6 alkyl group, an optionally substituted C 2-6 alkenyl group, an optionally substituted C 2-6 alkynyl group or a monovalent group represented by -L-Z, wherein L and Z represent the same as described above for R 1 , R 2 , R 3 , R 4 and R 5 ; each of R 7 and R 8 independently represents a hydrogen atom, an optionally substituted C 1-6 alkyl group, an optionally substituted C 3-8 cycloalkyl group, an optionally substituted C 2-6 alkenyl group or an optionally substituted C 2-6 alkynyl group; and Q represents an oxygen atom, a sulfur atom, or a nitrogen atom having a hydrogen atom, an optionally substituted C 1-6 alkyl group, an optionally substituted C 1-6 alkoxy group, an optionally substituted C 3-8 cycloalkyl group, an optionally substituted C 2-6 alkenyl group, or an optionally substituted C 2-6 alkynyl group, provided that the 1,5-naphthyridine derivative represented by Formula [1] is not any of the following compounds A1 to A16: