1a,2,2a,3,5,8,10,10a,11,11a-decahydro-9-hydroxy-8,11-dimethoxy-1a-(2-methyl-1,3-dioxolan-2-yl)-3,10-dioxo-5,8-ethanonaphthaceno<2,3-b>oxiren-4-yl 2,2-dimethylpropanoate 在
lead dioxide 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以71%的产率得到1a,2,3,5,8,10,11,11a-octahydro-9-hydroxy-8,11-dimethoxy-1a-(2-methyl-1,3-dioxolan-2-yl)-3,10-dioxo-5,8-ethanonaphthaceno<2,3-b>oxiren-4-yl 2,2-dimethylpropanoate