Thiobenzimidazole derivative or pharmaceutically acceptable salt thereof, and use thereof

A thiobenzimidazole derivative or a pharmaceutically acceptable salt thereof represented by the following [Chemical Formula 1]:

• in Chemical Formula 1,
• X is any one selected from C or N,
• R1, R2 and R3 are each independently any one selected from the group consisting of hydrogen, halogen, —OR4, —NR5R6, a substituted or unsubstituted C3 to C20 cycloalkyl group, or a substituted or unsubstituted C3 to C20 heterocycloalkyl group, a substituted or unsubstituted C3 to C20 aryl group, a substituted or unsubstituted C3 to C20 heteroaryl group, and a substituted or unsubstituted sulfonamide group,
• R4 is an alkyl group of C1-C12,
• R5 and R6 are each independently any one selected from the group consisting of hydrogen, a C1-C12 alkyl group, —(CH2)n—N(R4)2, a substituted or unsubstituted C3 to C20 aryl group, and a substituted or unsubstituted C3 to C20 heteroaryl group,
• n is an integer from “0” to “6.”