S-(((2S,3S,4R,5S,6S)-3,4,5-tris(benzyloxy)-6-ethynyltetrahydro-2H-pyran-2-yl)methyl) ethanethioate 在
N-溴代丁二酰亚胺(NBS) 、
silver nitrate 作用下,
以
丙酮 为溶剂,
以98%的产率得到S-[[(2S,3S,4R,5S,6S)-6-(2-bromoethynyl)-3,4,5-tris(phenylmethoxy)oxan-2-yl]methyl] ethanethioate