An Acyclic Aminonaphthyridine-Based Receptor for Carbohydrate Recognition: Binding Studies in Competitive Solvents
作者:Monika Mazik、Hüseyin Cavga
DOI:10.1002/ejoc.200700264
日期:2007.8
1H NMR spectroscopic and microcalorimetric titrations revealed that receptor 3b, consisting of three protonated 2-amino-1,8-naphthyridine units, binds N-acetylneuraminic acid (Neu5Ac), the most commonly occurring sialic acid, with high affinity in competitive solvents such as water/dimethyl sulfoxide. Receptor 3b is able to form neutral/charge-reinforced hydrogen bonds and ion pairs with Neu5Ac, similar
1H NMR 光谱和微量热滴定显示受体 3b 由三个质子化的 2-amino-1,8-naphthyridine 单元组成,与最常见的唾液酸 N-乙酰神经氨酸 (Neu5Ac) 结合,在竞争性溶剂中具有高亲和力,例如水/二甲基亚砜。受体 3b 能够与 Neu5Ac 形成中性/电荷增强的氢键和离子对,类似于唾液酸结合蛋白。此外,核磁共振波谱提供了中性糖弱结合的迹象,如甲基 β-D-吡喃葡萄糖苷、D-麦芽糖和 D-纤维二糖。描述了水介质中的分子建模计算、合成和结合研究。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)