重氮甲烷 、
乙酸酐 、
(2R,3S:8S,9R,10S)-3,9-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-8-(2,4-dihydroxyphenyl)-10-(3,4-dihydroxyphenyl)-2,3-trans-8,9-trans-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene 在
吡啶 作用下,
生成 (2R,3S:8S,9R,10S)-3,9-diacetoxy-2,10-bis(3,4-dimethoxyphenyl)-8-(2,4-dimethoxyphenyl)-2,3-trans-8,9-trans-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene