C-Disaccharides as Probes for Carbohydrate Recognition – Investigation of the Conformational Requirements for Binding of Disaccharide Mimetics of Sialyl Lewis X
作者:Richard W. Denton、Xuhong Cheng、Kurissery A. Tony、Anna Dilhas、Juan José Hernández、Angeles Canales、Jesús Jiménez-Barbero、David R. Mootoo
DOI:10.1002/ejoc.200600825
日期:2007.2
known O-disaccharide mimetic of sialyl Lewis X, to P-selectin. The synthesis of the C-glycosides centered on the de novo construction of the galactose residue via an oxocarbenium ion/enol ether cyclization. Conformational analysis was performed by a combination of NMR spectroscopy and molecular mechanics (MM) and molecular dynamics (MD) calculations. The inhibition of P-selectin binding was evaluated in
设计了一组 C-二糖类似物来探测唾液酸路易斯 X 的已知 O-二糖模拟物对 P-选择素的识别。C-糖苷的合成集中在半乳糖残基通过氧代碳鎓离子/烯醇醚环化从头构建。构象分析是通过 NMR 光谱和分子力学 (MM) 和分子动力学 (MD) 计算的组合进行的。在 P-选择素 Biacore 测定中评估 P-选择素结合的抑制作用。在 12 mM 时,O-糖苷显示出 48% 的结合抑制,而 C-糖苷类似物显示出 25-31% 的抑制。该数据在 sLex 的活性构象和这些配体的构象行为的背景下进行讨论。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)