Novel heterocyclic amine derivative and pharmaceutical composition comprising same

A compound represented by the following Chemical Formula 1, or a pharmaceutically acceptable salt thereof:

• wherein, in Chemical Formula 1,
• B is a 5-membered or 6-membered heterocycle containing 1 to 3 heteroatoms each independently selected from the group consisting of N, O and S, provided that the 5-membered or 6-membered heterocycle includes at least one N,
• R1 is hydrogen, halogen, C1-4 alkyl, or C1-4 haloalkyl,
• X1 and X2 are each independently N, or CR′,
• wherein R′ is hydrogen or halogen,
• L is a bond, C1-4 alkylene, or —O—,
• R2 is cyano;
• C1-4 alkyl;
• C6-10 aryl;
• pyridinyl;
• morpholino;
• piperazinyl;
• or piperidinyl,
• wherein, the piperazinyl and the piperidinyl are each independently, unsubstituted, or substituted with C1-4 alkyl, C1-4 alkyl substituted with cyano, C1-4 alkyl substituted with amino, C1-4 alkyl substituted with C1-4 alkoxy, or —CO—(C1-4 alkyl),
• Y is a bond, —O—, —NH—, or —N(C1-4 alkyl)-,
• A is C1-4 alkyl,
• wherein R3 is C1-4 alkyl, C1-4 haloalkyl, C2-4 alkenyl, C2-4 haloalkenyl, C2-4 alkynyl, or C2-4 haloalkynyl.