3,5,7-trihydroxy-2-[8-hydroxy-3-(4-hydroxy-3-methoxyphenyl)-2-(hydroxymethyl)-2,3-dihydro-1,4-benzodioxin-6-yl]-3,4-dihydro-2H-1-benzopyran-4-one 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 2.0h,
生成 2-{8-hydroxyl-3-(4-hydroxyl-3-methoxyphenyl)-2-hydroxymethyl-2,3-dihydrobenzo[b][1,4]dioxan-6-yl}chromane-3,4,5,7-tetrol