(2R,3R,4R)-4-{2-[(E)-2-(3,4-Dihydroxy-phenyl)-vinyl]-4,6-dihydroxy-phenyl}-2-(4-hydroxy-phenyl)-chroman-3,7-diol 、
(2R,3S,4S)-2-(4-Hydroxy-phenyl)-chroman-3,4,7-triol 在
盐酸 作用下,
反应 1.0h,
生成 Guibourtinidol-(4alpha->2)-3,5,3',4'-tetrahydroxystilbene-(6->4beta)-epiguibourtinidol