(2Z,4E,6E,8E)-2,6-Dimethyl-10-[(3aS,5aS,9aS,9bS)-3a,6,6,9a-tetramethyl-2,7-dioxo-dodecahydro-cyclopenta[a]naphthalen-(3Z)-ylidene]-undeca-2,4,6,8-tetraenoic acid methyl ester 在
臭氧 作用下,
以
二氯甲烷 为溶剂,
反应 0.5h,
以30 mg的产率得到(4aR,4bS,8aR,10aR)-4b,8,8,10a-Tetramethyl-octahydro-2-oxa-phenanthrene-1,3,7-trione