7',17'-Dihydroxyspiro[2-benzofuran-3,13'-2-oxapentacyclo[12.8.0.03,12.04,9.015,20]docosa-1(14),3(12),4(9),5,7,10,15(20),16,18,21-decaene]-1-one 、
乙酸酐 在
溶剂黄146 作用下,
反应 18.0h,
以92%的产率得到(17'-Acetyloxy-3-oxospiro[2-benzofuran-1,13'-2-oxapentacyclo[12.8.0.03,12.04,9.015,20]docosa-1(14),3(12),4(9),5,7,10,15(20),16,18,21-decaene]-7'-yl) acetate