rac-methyl 5-((3aS,5R,6R,6aS)-5-hydroxy-6-vinyl-1,3a,4,5,6,6a-hexahydropentalen-2-yl)pentanoate 、
acetic acid;(3S)-oct-1-en-3-ol 在
acetic acid;(3S)-oct-1-en-3-ol 作用下,
以75的产率得到methyl 5-[(3aS,5R,6R,6aS)-6-[(E,3S)-3-acetyloxyoct-1-enyl]-5-hydroxy-1,3a,4,5,6,6a-hexahydropentalen-2-yl]pentanoate