(2R,3S)-1-((4S,6S)-6-(((4S,6S)-6-(((4R,6R)-6-((3S,4S,E)-4-(4-methoxybenzyloxy)-3,5-dimethylhex-1-enyl)-2,2-dimethyl-1,3-dioxan-4-yl)methyl)-2,2-dimethyl-1,3-dioxan-4-yl)methyl)-2,2-dimethyl-1,3-dioxan-4-yl)-3-methylpent-4-en-2-ol 、
丙烯醛 在
Hoveyda-Grubbs catalyst second generation 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 48.0h,
以52%的产率得到(4S,5R,E)-5-hydroxy-6-((4S,6S)-6-(((4S,6S)-6-(((4R,6R)-6-((3S,4S,E)-4-(4-methoxybenzyloxy)-3,5-dimethylhex-1-enyl)-2,2-dimethyl-1,3-dioxan-4-yl)methyl)-2,2-dimethyl-1,3-dioxan-4-yl)methyl)-2,2-dimethyl-1,3-dioxan-4-yl)-4-methylhex-2-enal