Phenylsulfonamide derivatives, preparation method therefor, and pharmaceutical composition for prevention or treatment of cancer containing same as active ingredient

A compound represented by Formula 1 below, a stereoisomer thereof, a solvate thereof, a hydrate thereof, or a pharmaceutically acceptable salt thereof:

• in Formula 1,
• A is
• R1 is hydrogen or C1-C10 alkyl;
• R2 is hydrogen, halogen, C1-C10 alkyl unsubstituted or substituted with halogen or hydroxyl, or C3-C10 cycloalkyl;
• R3 and R4 are independently halogen;
• R5 is unsubstituted or substituted C6-C10 aryl, or unsubstituted or substituted 5-10 membered heteroaryl,
• wherein, the substituted C6-C10 aryl and the substituted 5-10 membered heteroaryl are independently substituted with at least one selected from the group consisting of C1-C10 alkyl unsubstituted or substituted with halogen or hydroxyl, C1-C10 alkoxy, halogen, and cyano, or substituted for two adjacent atoms to form 5-6 membered heterocycle. At this time, the 5-6 membered heterocycle contains at least one N, and is unsubstituted or substituted with at least one selected from C1-C10 alkyl and oxo.