8-Hydroxyquinoline as a building block for artificial receptors: binding preferences in the recognition of glycopyranosides
作者:Monika Mazik、Christoph Geffert
DOI:10.1039/c0ob00960a
日期:——
the recognition of glycosides. Compared to the previously described three-armed aminopyridine-based receptor, compounds 1 and 2 showed significantly increased affinity to β-galactoside. Receptor 2, incorporating two 8-hydroxyquinoline units, was shown to be the most effective receptor for β-galactoside. Compound 3, bearing one 8-hydroxyquinoline group, was found to be a highly effective receptor for
8-羟基喹啉含三取代三乙苯核心的基于1-3的受体被制备,并评估了它们与糖苷的结合特性。1 H NMR和荧光滴定以及结合研究在两相系统中,如非极性介质,并从含水糖相转移到有机溶剂中的固体碳水化合物的溶解,表明β-相对于在识别α端基异构体的结合偏好苷。与之前描述的三臂相比氨基吡啶基受体,化合物1倍2显示对β-D-半乳糖苷显著增加的亲和力。受体2,包含两个8-羟基喹啉单位被证明是β-半乳糖苷最有效的受体。化合物3,带有一个8-羟基喹啉发现该基团是β-葡萄糖苷的高效受体,并且显示出比基于喹啉的化合物4更有效的受体,表明喹啉羟基在络合物形成中的重要作用。