(9S,10S,12S,13R)-9,10-bis[[tert-butyl(dimethyl)silyl]oxy]-13-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-12-methyl-13-phenylmethoxytridec-1-en-3-one 、 [(2S,4E,6R,8E,10R)-2,10-bis[[tert-butyl(dimethyl)silyl]oxy]-1-[tert-butyl(diphenyl)silyl]oxytrideca-4,8,12-trien-6-yl]oxy-tert-butyl-dimethylsilane 在
second generation Grubbs-Hoveyda catalyst 作用下,
以
二氯甲烷 为溶剂,
反应 47.5h,
以69%的产率得到(1R,2S,4S,5S,12E,15R,16E,19R,20E,23S)-4,5,15,19,23-pentakis[[tert-butyl(dimethyl)silyl]oxy]-24-[tert-butyl(diphenyl)silyl]oxy-1-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-methyl-1-phenylmethoxytetracosa-12,16,20-trien-11-one