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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Scanning the Potential Energy Surface of Furanosyl Oxocarbenium Ions: Models for Reactive Intermediates in Glycosylation Reactions
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Scanning the Potential Energy Surface of Furanosyl Oxocarbenium Ions: Models for Reactive Intermediates in Glycosylation Reactions

机译:扫描呋喃糖基氧碳鎓离子的势能表面:糖基化反应中的反应中间体的模型

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摘要

A new scanning method with complementary graph to describe the ring potential energy surface of furanoses is introduced. Density functional theory at the B3LYP level of theory with the 6-311G(d,p) basis set is used to calculate the energy of the partially minimized structures. The method is used to determine the correlation between the preferred conformation of oxocarbenium ions that are model intermediates for a glycosylation reaction and recent experimental results. Key disagreements between the predicted geometry and the minima based on the scans described herein indicate that the preferred oxocarbenium ion conformation is not a consistent predictor of preferred stereochemistry of the products.
机译:介绍了一种用互补图描述呋喃糖酶环势能面的新扫描方法。在B3LYP理论级别上具有6-311G(d,p)基集的密度泛函理论用于计算部分最小化结构的能量。该方法用于确定作为糖基化反应的模型中间体的氧碳鎓离子的优选构象与最近的实验结果之间的相关性。基于本文所述的扫描,在预测的几何形状和最小值之间的关键分歧表明,优选的氧碳鎓离子构象不是产品的优选立体化学的一致预测因子。

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