(2S,5R,Z)-1-((4R,6S)-6-{2-[(2S,6R)-6-allyl-tetrahydro-2H-pyran-2-yl]propan-2-yl}-2,2-dimethyl-1,3-dioxan-4-yl)-5-[(tert-butyldiphenylsilyloxy)methyl]hept-3-en-2-yl acrylate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以83%的产率得到(1S,7S,9S,11R,13R,E)-7-{(R,Z)-3-[(tert-butyldiphenylsilyloxy)methyl]pent-1-enyl}-9,11-dimethyl-1,3-dioxan-12,12-dimethyl-6,17-dioxabicyclo[11.3.1]heptadec-3-en-5-one