6',7',8',9'-tetrahydro-3'-(hydroxymethyl)-1',4,5,6,8,9,10'-heptamethoxyspiro(2H-benz[f]indene-2,9'-benz[g]isoquinoline)-1,3-dione 在
manganese(IV) oxide 作用下,
以
乙醚 为溶剂,
反应 0.5h,
以65%的产率得到1,3,6',7',8',9'-hexahydro-1',4,5,6,8,9,10'-heptamethoxy-1,3-dioxospiro(2H-benz[f]indene-2,9'-benz[g]isoquinoline)-3'-carboxaldehyde