Polycyclic pyridopyrazine derivative

A compound represented by Formula (I):

• wherein
• ring A is a C5-C7 non-aromatic carbocycle or a 5- to 7-membered non-aromatic heterocycle, and the non-aromatic carbocycle and the non-aromatic heterocycle may be further fused with a benzene ring, a 3- to 7-membered non-aromatic carbocycle, or a 3- to 7-membered non-aromatic heterocycle and may form a spiro ring of a 3- to 7-membered non-aromatic carbocycle and a 3- to 7-membered non-aromatic heterocycle;
• ring B is a benzene ring or a pyridine ring;
• Q is —NHC(O)— (the left bond binds to CR2aR2b) or a 5-membered aromatic heterocycle;
• R1 is each independently halogen, alkyl, haloalkyl, alkyloxy, cyano, or haloalkyloxy;
• R2a and R2b are each independently hydrogen, alkyl, or haloalkyl;
• R3 is alkyl or haloalkyl;
• R4 and R5 are each independently hydrogen or alkyl;
• R6 is each independently halogen, alkyl, haloalkyl, alkyloxy, haloalkyloxy, or alkyloxyalkyl;
• or
• two R6s bonded to a non-adjacent atom may be taken together with each other to form a C1-C3 bridge which may have an intervening heteroatom;
• n is an integer of 1 to 3;
• and
• m is an integer of 0 to 3,
• provided that, when m is 0, a) the ring B is a pyridine ring, b) the ring A is a C5-C7 non-aromatic carbocycle, the non-aromatic carbocycle may be further fused with a benzene ring, a 3- to 7-membered non-aromatic carbocycle, or a 3- to 7-membered non-aromatic heterocycle and may form a spiro ring of a 3- to 7-membered non-aromatic carbocycle and a 3- to 7-membered non-aromatic heterocycle, and Q is a 5-membered aromatic heterocycle, c) the ring A is a C5-C7 non-aromatic carbocycle, the non-aromatic carbocycle may be further fused with a benzene ring, a 3- to 7-membered non-aromatic carbocycle, or a 3- to 7-membered non-aromatic heterocycle and may form a spiro ring of a 3- to 7-membered non-aromatic carbocycle and a 3- to 7-membered non-aromatic heterocycle, Q is —NHC(O)—, and a group represented by the following formula
• or d) the ring A is a 5- to 7-membered non-aromatic heterocycle, the non-aromatic heterocycle may be further fused with a benzene ring, a 3- to 7-membered non-aromatic carbocycle or a 3- to 7-membered non-aromatic heterocycle and may form a spiro ring of a 3- to 7-membered non-aromatic carbocycle and a 3- to 7-membered non-aromatic heterocycle, Q is a 5-membered aromatic heterocycle, and a group represented by the following formula
• provided that the following compounds are excluded:
• or a pharmaceutically acceptable salt thereof.