Patent ID: 7994196

Claim:
An indazole compound represented by formula (I): wherein R 1 is a hydrogen atom, an optionally substituted alkyl, an optionally substituted phenyl or an optionally substituted aromatic heterocyclic ring, and R 2 is a group of formula (II), wherein in the formula (II), is a single bond or a double bond, in the formula (II), s is an integer of 1 or 2, t is an integer of 1 or 2, sum of s and t is 3, R 3 is a hydrogen atom, a halogen atom, an optionally substituted alkyl, a hydroxyl, an alkoxy, a carboxy or an alkoxycarbonyl, ring Ar 1 is an aryl or an aromatic heterocyclic ring, R 4 , R 4′ , R 4″ are the same or different and each is a hydrogen atom, a halogen atom, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted alkynyl, a hydroxyl, an alkoxy, a carboxy, an alkoxycarbonyl, an acyl, —O(C═O)R 4a (wherein R 4a is an optionally substituted C 1-6 alkyl), —(C═O)NR 4a′ R 4a″ (wherein R 4a′ and R 4a″ are the same or different and each is a hydrogen atom or an optionally substituted C 1-6 alkyl, or R 4a′ and R 4a″ are taken together to form an optionally substituted 5- to 7-membered non-aromatic heterocyclic ring), —NH(C═O)R 4a (wherein R 4a is an optionally substituted C 1-6 alkyl), —SO 2 NR 4a′ R 4a″ (wherein R 4a′ and R 4a″ are the same or different and each is a hydrogen atom or an optionally substituted C 1-6 alkyl, or R 4a′ and R 4a″ are taken together to form an optionally substituted 5- to 7-membered non-aromatic heterocyclic ring), —NHSO 2 R 4a (wherein R 4a is an optionally substituted C 1-6 alkyl), an amino, an alkylamino, —SR 4a (wherein R 4a is an optionally substituted C 1-6 alkyl), —SO 2 R 4a is an optionally substituted C 1-6 alkyl), a cyano, an optionally substituted phenyl or an optionally substituted heterocyclic ring, or R 4 and R 4′ are taken together to form an C 1-3 alkylenedioxy, and R 5 is absent, or a hydrogen atom, a halogen atom, an optionally substituted alkyl, a hydroxyl, an alkoxy, an alkoxycarbonyl, an acyl, —(C═O)NR 5a R 5a′ (wherein R 5a and R 5a′ are the same or different and each is a hydrogen atom or an optionally substituted C 1-6 alkyl), —NH(C═O)R 5a″ (wherein R 5a″ is an optionally substituted C 1-6 alkyl), an amino, an alkylamino, —SR 5a (wherein R 5a is a hydrogen atom or an optionally substituted C 1-6 alkyl) or a cyano, or a pharmaceutically acceptable salt thereof.