(2R,3S,4R,2'R,3'S,2''R,3''S,4''R)-2,2''-Bis-(3,4-dihydroxy-phenyl)-2'-(3-hydroxy-4-methoxy-phenyl)-3,4,3',4',3'',4''-hexahydro-2H,2'H,2''H-[4,6';8',4'']terchromene-3,7,3',5',7',3'',7''-heptaol 在
碳酸氢钠 、
sodium carbonate 作用下,
以
水 为溶剂,
反应 3.0h,
生成 (2R,3R,4S,8R,9S)-2-(2,4-Dihydroxy-phenyl)-4-(3,4-dihydroxy-phenyl)-8-(3-hydroxy-4-methoxy-phenyl)-3,4,9,10-tetrahydro-2H,8H-pyrano[2,3-f]chromene-3,5,9-triol 、 (2R,3S,8S,9S,10R)-10-(2,4-dihydroxyphenyl)-8-(3,4-dihydroxyphenyl)-6-[(2R,3S,4R)-2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-3,4-dihydro-2H-chromen-4-yl]-2-(3-hydroxy-4-methoxyphenyl)-2,3,4,8,9,10-hexahydropyrano[2,3-f]chromene-3,5,9-triol 、 (2S,3S,4R,7S,8R)-2-(3,4-Dihydroxy-phenyl)-4-(2,4-dihydroxy-phenyl)-10-[(2R,3S,4R)-2-(3,4-dihydroxy-phenyl)-3,7-dihydroxy-chroman-4-yl]-8-(3-hydroxy-4-methoxy-phenyl)-3,4,7,8-tetrahydro-2H,6H-pyrano[3,2-g]chromene-3,5,7-triol 、 (2R,3R,4S,8R,9S)-2-(2,4-Dihydroxy-phenyl)-4-(3,4-dihydroxy-phenyl)-6-[(2R,3S,4R)-2-(3,4-dihydroxy-phenyl)-3,7-dihydroxy-chroman-4-yl]-8-(3-hydroxy-4-methoxy-phenyl)-3,4,9,10-tetrahydro-2H,8H-pyrano[2,3-f]chromene-3,5,9-triol