(4S,5S)-4-((2R,3R,8S,9R,10S,11Z,13S,15S,16R,17E)-3,9,13,15-tetrakis(tert-butyldimethylsilyloxy)-8,10,16-trimethyl-19-(trityloxy)nonadeca-11,17-dien-2-yl)-2-(4-methoxyphenyl)-5-methyl-1,3-dioxane 在
二异丁基氢化铝 作用下,
以
正己烷 、
二氯甲烷 为溶剂,
反应 0.5h,
以90%的产率得到(2S,3S,4R,5R,10S,11R,12S,13Z,15S,17S,18R,19E)-3-(4-methoxybenzyloxy)-5,11,15,17-tetrakis(tert-butyldimethylsilyloxy)-2,4,10,12,18-pentamethyl-21-(trityloxy)henicosa-13,19-dien-1-ol