<3S,4R,6Z,10S,10(4R,6S)>-10-(2,2-dimethyl-4-ethyl-1,3-dioxan-6-yl)-7-(2,2-dimethylhydrazino)-1-<(4-methoxyphenyl)methoxy>-4-methyl-3-(trimethylsiloxy)-6-undecen-5-one 在
氢氟酸 作用下,
以
乙腈 为溶剂,
反应 16.5h,
以92%的产率得到<2S,3R,6R,8S,8(2R),9S>-3,9-dimethyl-8-(2-hydroxybutyl)-2-<2-<(4-methoxyphenyl)methoxy>ethyl>-1,7-dioxaspiro<5.5>undecan-4-one