(R)-1-((2R,5S)-5-((5S,8S)-3,10-di-tert-butyl-8-((2S,5R)-5-((S)-1-(di-tert-butylsilyloxy)undecyl)tetrahydrofuran-2-yl)-2,2,11,11-tetramethyl-4,9-dioxa-3,10-disiladodecan-5-yl)tetrahydrofuran-2-yl)propane-1,3-diyl dimethanesulfonate 、
烯丙基溴化镁 在
copper(l) iodide 作用下,
以
乙醚 为溶剂,
反应 0.5h,
以71%的产率得到(R)-1-((2R,5S)-5-((5S,8S)-3,10-di-tert-butyl-8-((2S,5R)-5-((S)-1-(di-tert-butylsilyloxy)undecyl)tetrahydrofuran-2-yl)-2,2,11,11-tetramethyl-4,9-dioxa-3,10-disiladodecan-5-yl)tetrahydrofuran-2-yl)hex-5-enyl methanesulfonate