Starting from the commercially available natural product (E)-resveratrol (1), the four selectively tert-butyldimethylsilyl (TBS) protected (E)-resveratrols 6-9 were prepared by one reaction. Using 6-9 as glucosyl acceptors and trifluoroacetimidate 11 as glucosyl donor, three bioactive natural glucopyranoside conjugates of (E)-resveratrol 2-4 and one novel compound (5) were efficiently prepared in two steps.
从市售
天然产物(E)-
白藜芦醇(1)出发,通过一步反应制备了四种选择性叔丁基二甲基
硅基(TBS)保护的(E)-
白藜芦醇衍
生物 6-9。以 6-9 作为糖基受体,三
氟乙
酰亚胺 11 作为糖基供体,高效地通过两步反应合成了三种具有
生物活性的天然
葡萄糖苷(E)-
白藜芦醇偶联物 2-4 和一个新化合物(5)。