methyl (5S,7S,8R,Z)-7-methoxy-8-((4S,6R)-6-((S)-1-((4S,5S,6S)-6-((S)-4-((2S,4R,6S)-4-methoxy-6-methyltetrahydro-2H-pyran-2-yl)butan-2-yl)-2,2,5-trimethyl-1,3-dioxan-4-yl)ethyl)-2,2-dimethyl-1,3-dioxan-4-yl)-5-((4-methoxybenzyl)oxy)non-2-enoate 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
二氯甲烷 、
水 为溶剂,
以88%的产率得到(Z)-(5S,7S,8R)-5-Hydroxy-7-methoxy-8-[(4S,6R)-6-((S)-1-{(4S,5S,6S)-6-[(S)-3-((2S,4R,6S)-4-methoxy-6-methyl-tetrahydro-pyran-2-yl)-1-methyl-propyl]-2,2,5-trimethyl-[1,3]dioxan-4-yl}-ethyl)-2,2-dimethyl-[1,3]dioxan-4-yl]-non-2-enoic acid methyl ester