(4R,5R)-(3S,4S,7R,8S,9R,10R,E)-8-((tert-butyldimethylsilyl)oxy)-10-methoxy-12-((4-methoxybenzyl)oxy)-3,5,7,9-tetramethyldodeca-1,5-dien-4-yl 2,2-dimethyl-5-((R,E)-3-methylhexa-1,5-dien-1-yl)-1,3-dioxolane-4-carboxylate 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 作用下,
以
二氯甲烷 为溶剂,
反应 17.0h,
以76%的产率得到(3aR,6S,7S,8E,11R,12E,13aR)-6-((4R,5S,6R,7R,E)-5-((tert-butyldimethylsilyl)oxy)-7-methoxy-9-((4-methoxybenzyl)oxy)-4,6-dimethylnon-2-en-2-yl)-2,2,7,11-tetramethyl-6,7,10,11-tetrahydro-3aH-[1,3]dioxolo[4,5-c ][1]oxacyclododecin-4(13aH)-one