重氮甲烷 、
乙酸酐 、
(2R,3S,4S,7S,8R)-2-(3,4-Dihydroxy-phenyl)-4-(2,4-dihydroxy-phenyl)-8-(3-hydroxy-4-methoxy-phenyl)-3,4,7,8-tetrahydro-2H,6H-pyrano[3,2-g]chromene-3,5,7-triol 生成 (2R,3S:6S,7S,8R)-3,7-diacetoxy-2,8-bis(3,4-dimethoxyphenyl)-6-(2,4-dimethoxyphenyl)-2,3-trans-6,7-cis-7,8-trans-3,4,6,7-tetrahydro-2H,8H-pyrano<2,3-g>chromene