(2E,4E,6E)-8-[(4S,5S,6R)-6-{[(2R,4R,6R)-6-[(2S,4S)-4-hydroxy-7-{(4S,6R)-6-[(3S,4S,E)-4-hydroxy-3,5-dimethylhex-1-enyl]-2,2-dimethyl-1,3-dioxan-4-yl}-2-(4-methoxybenzyloxy)-6-oxoheptyl]-2-(4-methoxyphenyl)-1,3-dioxan-4-yl]methyl}-2,2,5-trimethyl-1,3-dioxan-4-yl]-octa-2,4,6-trienal 、
(2E,4E)-6-(diethoxyphosphoryl)hexa-2,4-dienoic acid ethyl ester 在
lithium diisopropyl amide 作用下,
以
四氢呋喃 、 hexanes 为溶剂,
反应 11.0h,
以66%的产率得到(2E,4E,6E,8E,10E,12E)-ethyl 14-[(4S,5S,6R)-6-{[(2R,4R,6R)-6-{(R)-3-[(4S,6R)-6-{[(4R,6R)-6-[(3S,4S,E)-4-hydroxy-3,5-dimethylhex-1-enyl]-2,2-dimethyl-1,3-dioxan-4-yl]methyl}-2,2-dimethyl-1,3-dioxan-4-yl]-2-(4-methoxybenzyloxy)propyl}-2-(4-methoxyphenyl)-1,3-dioxan-4-yl]methyl}-2,2,5-trimethyl-1,3-dioxan-4-yl]tetradeca-2,4,6,8,10,12-hexaenoate