reducing-end half of telomerase inhibitor axinelloside A was synthesized. Features of the synthetic approach include (1) preparation of the scyllo-inositol unit via Ferrier-type-II rearrangement, (2) formation of the 1,2-cis-glycosidic linkages via remote acyl group participation, and (3) concise [2+2+2] assembly by virtue of Au(I)-catalyzed glycosylation.
合成了与端粒酶
抑制剂 axinelloside A 的还原端半相关的适当保护的六糖。该合成方法的特点包括(1)通过Ferrier-II型重排制备鲨肌醇单元,(2)通过远程酰基参与形成1,2-顺式糖苷键,以及(3)简洁的[ 2+2+2]通过 Au(I) 催化的糖基化组装。