(5S,6S)-6-((E,3R,4R)-3-(2-(allyloxycarbonylamino)ethyl)-6-oxo-3,4-bis(triethylsilyloxy)oct-1-en-7-ynyl)-5-ethyl-5,6-dihydropyran-2-one 在
溶剂黄146 、 sodium iodide 作用下,
反应 3.0h,
以79%的产率得到(5S,6S)-6-((1E,3R,4R,7E)-3-(2-(allyloxycarbonylamino)ethyl)-8-iodo-6-oxo-3,4-bis(triethylsilyloxy)octa-1,7-dienyl)-5-ethyl-5,6-dihydropyran-2-one