Orally administered pharmaceutical composition comprising fab i inhibitors and method for preparing same

A method for preparing a pharmaceutical composition for oral administration, comprising:

• adding 4-benzyloxy-1H-pyridone, 2-methyl-3-nitro-benzylchloride and potassium tert-butoxide to dimethylformamide, and mixing them to react with heating;
• adding purified water and drying with heating to obtain a dried product;
• dissolving the dried product in an organic solvent and adding purified water for layer separation;
• recovering the organic layer to filter and concentrate it to obtain concentrates;
• re-concentrating the concentrates and adding hexane to obtain precipitates;
• dissolving the resulting precipitates, and cooling, filtering and drying them to obtain a dried product;
• and
• dissolving the resulting dried product in an organic solvent, adding iron chloride hexahydrate, activated carbon and hydrazine monohydrate thereto, cooling and filtrating them to obtain resulting precipitates and then drying and pulverizing it.