重氮甲烷 、
乙酸酐 、
(2S,3R,4S)-4-(3,4-Dihydroxy-phenyl)-2-(2,4-dihydroxy-phenyl)-chroman-3,5,7-triol 在
吡啶 作用下,
生成
(2R,3S,4R)-2,3-trans-3,4-trans-3-acetoxy-3',4',5,7-tetramethoxy-4-(2,4-dimethoxyphenyl)flavan 、 (2S,3R,4S)-3-acetoxy-2',4',5,7-tetramethoxy-4β-(3,4-dimethoxyphenyl)flavan 、
Acetic acid (2R,3S,4R)-4-(3,4-dimethoxy-phenyl)-2-(2,4-dimethoxy-phenyl)-5,7-dimethoxy-chroman-3-yl ester 、 (2S,3S,4R)-3-acetoxy-3',4',7-trimethoxy-4β-(2,4,6-trimethoxyphenyl)flavan