使核磁共振波谱仪，以氘代氯仿为溶剂溶解样品1203A，614，614羟基化，硫代甘油后测试1HNMR和13CNMR；并与数据库结构进行对比.通过结构对比反应前后以及反应物的1新，是否有新峰出现以及新峰是否为目标产物峰，进而判断反应是否完成。

The sample 1203A was dissolved with deuterated chloroform as solvent, 614,614 was hydroxylated, and 1HNMR and 13CNMR were tested by the NMR spectrometer. And compared with the database structure. By comparing the structure before and after the reaction, whether there is a new peak of the reactant, and whether the new peak is the target product peak, we can judge whether the reaction is complete.