Dendritic, 1,1′-Binaphthalene-Derived Cleft-Type Receptors (Dendroclefts) for the Molecular Recognition of Pyranosides
作者:Anja Bähr、Béatrice Felber、Katharina Schneider、François Diederich
DOI:10.1002/1522-2675(20000705)83:7<1346::aid-hlca1346>3.0.co;2-3
日期:2000.7.5
Two series of optically active, cleft-type dendritic receptors (dendroclefts) for carbohydrate recognition were prepared by attaching Frechet-type dendrons via ethynediyl linkers to a core consisting of one or two 1,1′-binaphthalene-2,2′-diyl phosphate moieties. Sugar substrates were expected to bind via bidentate ionic H-bonding of two OH groups to the phosphodiester core and, additionally, to undergo
通过将 Frechet 型树突通过乙炔二基连接体连接到由一个或两个 1,1'-binaphthalene-2,2'-diyl phosphate 组成的核心上,制备了两个系列用于碳水化合物识别的光学活性裂隙型树突受体 (dendroclefts)部分。预计糖底物将通过两个 OH 基团的双齿离子 H 键与磷酸二酯核心结合,此外,与周围树枝状楔的芳香环发生范德华和 CH···π 相互作用。用单个联萘合成树突受体 G-1-(S)-1、G-2-(S)-2 和 G-3-(S)-3(图 1;Gx=树突生成)核心从 3,3'-二乙炔基化的 MOM 保护 (MOM=methoxymethyl) 1,1'-binaphthalene-2 开始,2'-二醇 (S)-13,第 1-3 代的 Frechet 型树突通过 Sonogashira 交叉偶联连接(方案 3)。MOM-醚脱保护,然后形成磷酸二酯和离子交换