(1S,2S,4aR,4bS,5S,6R,8aR,9S,9aS)-methyl 9-hydroxy-6-methyl-5-((trimethylsilyl)oxy)-2-vinyl-2,4a,4b,5,6,7,8,8a,9,9a-decahydro-1H-fluorene-1-carboxylate 、
氯甲基甲基醚 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
以98%的产率得到(1S,2S,4aR,4bS,5S,6R,8aR,9S,9aS)-methyl 9-(methoxymethoxy)-6-methyl-5-((trimethylsilyl)oxy)-2-vinyl-2,4a,4b,5,6,7,8,8a,9,9a-decahydro-1H-fluorene-1-carboxylate