methyl-2-((2R)-2-(2-hydroxy-2-((S)-5-(2-methylallyl)-2-oxo-2,5-dihydrofuran-3-yl)ethyl)-3-methylbut-3-en-1-yl)-5-vinylfuran-3-carboxylate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
苯 为溶剂,
反应 15.0h,
以29%的产率得到(5S,9R,11R,Z)-methyl 9-hydroxy-3-methyl-7-oxo-11-(prop-1-en-2-yl)-6,16-dioxatricyclo[11.2.1.15,8]heptadeca-1(15),2,8(17),13-tetraene-14-carboxylate