Amide, Amino, Hydroxy and Aminopyridine Groups as Building Blocks for Carbohydrate Receptors
作者:Monika Mazik、Matthias Kuschel
DOI:10.1002/ejoc.200701097
日期:2008.3
primary amide, hydroxy or amino groups as recognition units used in nature, as well as 2-aminopyridine units as heterocyclic analogues of the asparagine/glutamine primary amide side chains, were prepared and their binding properties towards neutral sugar molecules were studied. The design of these receptors was inspired by the binding motifs observed in the crystal structures of protein–carbohydrate complexes
受体 1-3,结合伯酰胺、羟基或氨基作为自然界中使用的识别单元,以及作为天冬酰胺/谷氨酰胺伯酰胺侧链的杂环类似物的 2-氨基吡啶单元,制备了它们对中性糖分子的结合特性被研究。这些受体的设计灵感来自在蛋白质 - 碳水化合物复合物的晶体结构中观察到的结合基序。与 β-吡喃葡萄糖苷 5 的结合研究表明复合物的形成与 1:1 和 2:1 受体-单糖结合化学计量比,总 β21 结合常数为 107-108M-2。糖 CH 基团与受体中心苯环的氢键和相互作用都有助于稳定受体-糖复合物。综合类,描述了受体 1-3 的分子建模研究和结合特性,以及与缺乏第三个识别位点的受体 4 的比较结合研究。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)