(3R,5S,2'R,6'S)-3-(2',6'-oxido-8'-oxo-9'-decenyl)-5-methyl-3-(phenylthio)tetrahydrofuran-2-one 、
(5R,6R,9R,10R)-5,10-di-(t-butyldimethylsilyloxy)-6,9-oxido-1-docosene 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
反应 2.17h,
以82%的产率得到(3R,5S,2'R,6'S,13'R,14'R,17'R,18'R)-[13',18'-di-(t-butyldimethylsilyloxy)-2',6':14',17'-dioxido-8'-oxo-9'-triacontenyl]-5-methyl-3-(phenylthio)tetrahydrofuran-2-one