α-<i>O</i>-Linked Glycopeptide Mimetics: Synthesis, Conformation Analysis, and Interactions with Viscumin, a Galactoside-Binding Model Lectin
作者:Jesús Jiménez-Barbero、Elisa Dragoni、Chiara Venturi、Federico Nannucci、Ana Ardá、Marco Fontanella、Sabine André、Francisco Javier Cañada、Hans-Joachim Gabius、Cristina Nativi
DOI:10.1002/chem.200901077
日期:2009.10.12
spectroscopy by using the galactoside‐specific plant toxin viscumin as a model lectin. The experimental part was complemented by molecular docking. The described synthetic route and the strategic combination of computational and experimental techniques to reveal conformational properties and bioactivity establish the prepared α‐O‐linked glycopeptide mimetics as promising candidates for further exploitation of
甲硅烷基保护的半乳糖与合适的杂二烯的有效环加成,为简便的非对映选择性通往糖肽模拟支架的基础。它的碳水化合物部分通过β1-3连接的半乳糖基化进一步扩展。吡喃糖环保留其4 C 1椅构象,如分子模型和NMR光谱所示,以及典型的exo二糖观察到异头异构体的几何形状。通过使用半乳糖苷特有的植物毒素粘菌素作为模型凝集素,通过饱和转移差异NMR光谱法确定了预期的生物活性。实验部分辅以分子对接。所描述的合成路线以及计算和实验技术的战略性结合以揭示构象性质和生物活性,确定了制备的α- O-连接糖肽模拟物,为进一步开发该支架以提供O-聚糖用于凝集素阻断和疫苗接种提供了有希望的候选物。