Drug for treating pneumonia and preparation method of drug

The invention relates to a tetrazoloquinoline compound capable of being used for treating pneumonia. The tetrazoloquinoline compound has stronger antibacterial activity against various bacteria such as streptococcus pneumoniae and staphylococcus aureus, and has antibacterial activity significantly superior to known drugs especially for drug-fast streptococcus pneumoniae and drug-fast staphylococcus aureus. In addition, the preparation method is short in route, few in steps and high in total product yield, and is suitable for industrial large-scale production. 本发明涉及种可用于治疗肺炎的四唑并喹啉类化合物，其对于各类细菌如肺炎链球菌、金黄色葡萄球菌等具有较强的抗菌活性，特别是对于耐药肺炎链球菌和耐药金黄色葡萄球菌具有明显优于已知药物的抗菌活性。此外，本发明所述制备方法路线短、步骤少，产品总收率高，适合于工业化大规模生产。