3-{(3aS,4R,6S)-1-[1-Acetoxy-eth-(E)-ylidene]-6-hydroxy-2,3,3a,4,5,6-hexahydro-1H-inden-4-yl}-propionic acid methyl ester 在
sodium carbonate 作用下,
以
甲醇 为溶剂,
反应 2.5h,
以92%的产率得到3-((3aS,4R,6S)-1-Acetyl-6-hydroxy-3,3a,4,5,6,7-hexahydro-2H-inden-4-yl)-propionic acid methyl ester