(-)-6-{[2S-(2R*,3S*,4S*,5S*,6S*,10R*),7E]-4,11-bis-(tert-butyldimethylsiloxy)-2-hydroxy-6-methoxy-10-(4-methoxyphenylmethoxy)-3,5,8-trimethylundec-7-enyl}-2,2-dimethyl-1,3-dioxin-4-one 、
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,
反应 24.0h,
以95%的产率得到6-{[2S-(2R*,3S*,4S*,5S*,6S*,10R*),7E]-4,11-bis-(tert-butyldimethylsiloxy)-6-methoxy-10-(4-methoxyphenylmethoxy)-2-methoxymethoxy-3,5,8-trimethylundec-7-enyl}-2,2-dimethyl-[1,3]dioxin-4-one