(2R,3S,4R)-2,3-trans-3,4-trans-3,3',4',7-tetrahydroxy-4-<(2R,3S)-2,3-trans-3,3',4',7-tetrahydroxyflavan-6-yl>flavan 在
碳酸氢钠 、 sodium carbonate 作用下,
以
水 为溶剂,
反应 7.0h,
生成 (2S,3S,4S,7S,8R)-2,8-Bis-(3,4-dihydroxy-phenyl)-4-(2,4-dihydroxy-phenyl)-3,4,7,8-tetrahydro-2H,6H-pyrano[3,2-g]chromene-3,7-diol 、 (2S,3S,4S,7S,8S)-2,8-Bis-(3,4-dihydroxy-phenyl)-4-(2,4-dihydroxy-phenyl)-3,4,7,8-tetrahydro-2H,6H-pyrano[3,2-g]chromene-3,7-diol 、
(2R,3S,4S,7S,8R)-2,8-Bis-(3,4-dihydroxy-phenyl)-4-(2,4-dihydroxy-phenyl)-3,4,7,8-tetrahydro-2H,6H-pyrano[3,2-g]chromene-3,7-diol 、
(+)-epifisetinidol-(4α,6)-(-)-fisetinidol