6-acetyl-4-methoxy-5,8-dioxo-5,8-dihydronaphthalen-2-yl trifluoromethanesulfonate 在
ammonium cerium(IV) nitrate 作用下,
以
乙腈 为溶剂,
反应 1.25h,
生成 3,3a,5,11b-tetrahydro-5-hydroxy-7-methoxy-5-methyl-2H-furo[3,2-b]naphtho[2,3-d]pyran-9-yl-2,6,11-trione trifluoromethanesulfonate