甲醇 、 (8',9-Diacetyloxy-4'-oxospiro[2-oxatricyclo[6.3.1.04,12]dodeca-1(11),4(12),5,7,9-pentaene-3,1'-naphthalene]-7-yl) acetate 在
potassium hydrogencarbonate 作用下,
以
水 为溶剂,
以39%的产率得到5,7',9'-Trihydroxy-3-methoxyspiro[2,3-dihydronaphthalene-4,3'-2-oxatricyclo[6.3.1.04,12]dodeca-1(11),4(12),5,7,9-pentaene]-1-one