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 以
xylene 为溶剂,
反应 2.0h,
以66%的产率得到1a,2,4,9,11,11a-hexahydro-10-hydroxy-8,11-dimethoxy-1a-(2-methyl-1,3-dioxolan-2-yl)-4,9-dioxonaphthaceno<2,3-b>oxiren-3-yl 2,2-dimethylpropanoate