(2R,3S,4R)-2,3-trans-3,4-cis-4-(2,4,6-trihydroxyphenyl)flavan-3,3',4',7-tetraol 在
碳酸氢钠 、 sodium carbonate 作用下,
反应 4.0h,
生成
2-[(2S,3S,4R)-2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-3,4-dihydro-2H-chromen-4-yl]benzene-1,3,5-triol 、
(2R,3S,4R)-2,3-trans-3,4-trans-4-(2,4-Dihydroxyphenyl)-3',4',5,7-tetrahydroxyflavan-3-ol 、 (2S,3R,4S)-4-(3,4-Dihydroxy-phenyl)-2-(2,4-dihydroxy-phenyl)-chroman-3,5,7-triol 、 (2R,3R,4S)-4-(3,4-Dihydroxy-phenyl)-2-(2,4-dihydroxy-phenyl)-chroman-3,5,7-triol