3α-acetoxy-6β-methacryloyloxyivangustin 在
pyridinium chlorochromate 作用下,
以
氯仿 为溶剂,
反应 2.0h,
以1.5 mg的产率得到2-Methyl-acrylic acid (3aR,4R,6R,8aR,9aR)-6-acetoxy-5,8a-dimethyl-3-methylene-2,8-dioxo-2,3,3a,4,6,7,8,8a,9,9a-decahydro-naphtho[2,3-b]furan-4-yl ester