Benzamide derivative compound, method for preparing same, and pharmaceutical composition for treating or preventing inflammatory disease containing same as active ingredient

A compound represented by formula 1 below, an isomer thereof or a pharmaceutically acceptable salt thereof:

• (In formula 1 above,
• L is single bond or straight or branched C1-C6 alkylene;
• R1 is hydrogen;
• C3-C8 cycloalkyl;
• nonsubstituted or substituted C6-C12 aryl;
• heteroaryl consisting of 6 to 12 atoms containing one or more heteroatoms selected from the group consisting of N and O;
• or heterocycloalkyl consisting of 6 to 10 atoms containing one or more heteroatoms selected from the group consisting of N and O;
• at this time, the substituted C6-C12 aryl can be substituted with one or more substituents selected from the group consisting of halogen, —NH2, straight or branched C1-C3 alkyl, and straight or branched C1-C3 alkoxy, and the substituted heteroaryl consisting of 6 to 12 atoms can be substituted with one or more halogens;
• R2 is hydrogen or straight or branched C1-C3 alkyl;
• R3 is nonsubstituted or substituted C6-C10 aryl;
• or heterocycloalkyl consisting of 6 to 8 atoms containing one or more heteroatoms selected from the group consisting of N and O;
• at this time, the substituted C6-C10 aryl can be substituted with one or more methoxy groups, the substituted heterocycloalkyl consisting of 6 to 8 atoms can be substituted with one or more hydroxyl ethyl groups;
• and
• R4 is C1-C3 haloalkyl, —SR5 or —SO2R5, at this time, R5 is straight or branched C1-C6 alkyl).