(4R,5S)-(CHCH3CHPhOCONCOB(n-Bu)2CHCH3) 、 alkaline earth salt of/the/ methylsulfuric acid 在
三氟甲磺酸二丁硼 、 ammonium cerium(IV) nitrate 作用下,
以90%的产率得到(4R,5S)-3-[(2S,3S)-3-((R)-1-Benzyloxy-ethyl)-2-methyl-5-trimethylsilanyl-pent-4-ynoyl]-4-methyl-5-phenyl-oxazolidin-2-one