(+)-fisetinidol-(4α,6)-(+)-catechin O-methyl ether 在
Na
2CO
3 - 0.025 M NaHCO
3 buffer 作用下,
反应 3.0h,
生成 (2S,3S,4R,7S,8R)-2-(2,4-Dihydroxy-phenyl)-4-(3,4-dihydroxy-phenyl)-8-(3-hydroxy-4-methoxy-phenyl)-3,4,7,8-tetrahydro-2H,6H-pyrano[3,2-g]chromene-3,5,7-triol 、 (2S,3S,4R,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,3R,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 、
(2R,3R,4S,8R,9S)-2-(3,4-Dihydroxy-phenyl)-4-(2,4-dihydroxy-phenyl)-8-(3-hydroxy-4-methoxy-phenyl)-3,4,9,10-tetrahydro-2H,8H-pyrano[2,3-f]chromene-3,5,9-triol