β-D-Araf-(1 → 2)-α-D-Araf-(1 → 5)-α-D-Araf-(1 → 5)-α-D-Araf-(1 → 5)-α-D-Araf-(1 → 5), as its octyl glycoside has been achieved through a convergent [3 + 2] coupling strategy. The difficult-to-obtain 1,2-cis-β-arabinofuranosidic bond at the non-reducing end of the target molecule was stereoselectively constructed by the use of a 2-quinolinecarbonyl-directed 1,2-cis glycosylation method.
有效合成结构1,β-D-Araf-(1→2)-α-D-Araf-(1→5)-α-D-Araf-(1→5)-α- D-Araf-(1→5)-α-D-Araf-(1→5),因为其辛基糖苷是通过收敛的[3 + 2]偶联策略实现的。通过使用2-
喹啉羰基定向的1,2-顺式糖基化方法,立体选择性地构建了在靶分子的非还原端难以获得的1,2-顺式-β-阿拉伯
呋喃糖苷键。