Acetic acid (3S,3aR,4R,6S,7aR,8R,9aR)-6-acetoxy-8-hydroxy-3,5,8-trimethyl-2-oxo-2,3,3a,4,6,7,7a,8,9,9a-decahydro-azuleno[6,5-b]furan-4-yl ester 在
间氯过氧苯甲酸 作用下,
以25%的产率得到Acetic acid (3S,3aR,4R,4aR,6S,7aR,8R,9aR)-6-acetoxy-8-hydroxy-3,4a,8-trimethyl-2,5-dioxo-dodecahydro-azuleno[6,5-b]furan-4-yl ester