6-[(2S)-2-hydroxy-4-oxohex-5-en-1-yl]-2,2-dimethyl-2,4-dihydro-1,3-dioxin-4-one 、
(4S)-4-[(2S,3R)-2-[(4-methoxyphenyl)methoxy]-3-methylpent-4-enyl]-2,2,4-trimethyl-1,3-dioxolane 在
Hoveyda-Grubbs catalyst second generation 作用下,
生成 6-[(E,2S,7R,8S)-2-hydroxy-8-[(4-methoxyphenyl)methoxy]-7-methyl-4-oxo-9-[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]non-5-enyl]-2,2-dimethyl-1,3-dioxin-4-one