2,2-二甲氧基丙烷 、
(E)-(3S,4S)-6-[(4R,6R)-6-((4S,6S)-6-{(R)-2-Hydroxy-3-[(4R,6S)-6-((E)-(S)-2-hydroxy-5-iodo-pent-4-enyl)-2,2-dimethyl-[1,3]dioxan-4-yl]-propyl}-2,2-dimethyl-[1,3]dioxan-4-ylmethyl)-2,2-dimethyl-[1,3]dioxan-4-yl]-2,4-dimethyl-hex-5-en-3-ol 在
对甲苯磺酸 作用下,
反应 72.0h,
以86%的产率得到(E)-(3S,4S)-6-[(4R,6R)-6-((4S,6R)-6-{(4R,6R)-6-[(4S,6S)-6-((E)-3-Iodo-allyl)-2,2-dimethyl-[1,3]dioxan-4-ylmethyl]-2,2-dimethyl-[1,3]dioxan-4-ylmethyl}-2,2-dimethyl-[1,3]dioxan-4-ylmethyl)-2,2-dimethyl-[1,3]dioxan-4-yl]-2,4-dimethyl-hex-5-en-3-ol