was readily prepared compared to a cage‐shaped analogue. This host associated with lipophilic glycosides to form chiral complexes, and the association constants were sufficiently high as to be comparable to those of the cage‐shaped analogue. Furthermore, this host extracted native monosaccharides into a lipophilic solvent.
通常,由于三维预组织的氢键结合位点,糖的笼形宿主可以与客体分子牢固结合。然而,由于大环化步骤的产率低,通常很难制备笼状分子。在这里,我们报告一个具有
吡啶-
乙炔-
苯酚单元的三臂形分子,作为一种具有预先组织的三维氢键位点的新型主体。与笼形类似物相比,这种三臂形宿主易于准备。该宿主与亲脂性糖苷结合形成手性复合物,缔合常数足够高,足以与笼形类似物的缔合常数相比。此外,该宿主将天然
单糖提取到亲脂性溶剂中。