ethyl (2E,4R)-4-<(2R,4S,5S,6R)-6-<(2R,3S)-2-ethyl-3-methyl-1,4-dioxaspiro<4.4>nonan-3-yl>-4-<2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl>>-2-methyl-2-pentenoate 在
lithium aluminium tetrahydride 作用下,
以
乙醚 为溶剂,
以99%的产率得到(2E,4R)-4-<(2R,4S,5S,6R)-6-<(2R,3S)-2-ethyl-3-methyl-1,4-dioxaspiro<4.4>nonan-3-yl>-4-<2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl>>-2-methyl-2-penten-1-ol