目的 研究奈多罗米钠合成的新方法。方法 以3-甲氧基苯胺为原料，经酰化反应、Friedel-Crafts反应、克莱森重排、酯化合环等六步反应得到终产物。结果 该合成方法操作简便，条件易控，收率较高。结论 该反应路线为一条较为理想的奈多罗米钠合成工艺路线。

Objective This study aims at developing a new method to synthesize nedocromil sodium. Methods In this experiment, 3-methoxyaniline was taken as the raw material, nedocromil sodium was obtained after a series of chemical reactions including acylation, Friedel-Crafts reaction, Claisen rearrangement, and esterification. Results The six-step synthesis is simple to operate and easy to control conditions, and yield high. Conclusion It is a desirable method for the synthesis of nedocromil sodium.