[(2R)-1-[tert-butyl(dimethyl)silyl]oxy-4-methylpent-4-en-2-yl] (2E,4Z,8E)-10-[(2S,6S)-6-ethenyl-4-methylideneoxan-2-yl]-5-methyl-7-oxodeca-2,4,8-trienoate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
以35%的产率得到(1S,2E,5R,8E,10Z,14E,17S)-5-[[tert-butyl(dimethyl)silyl]oxymethyl]-3,11-dimethyl-19-methylidene-6,21-dioxabicyclo[15.3.1]henicosa-2,8,10,14-tetraene-7,13-dione