首页> 外文期刊>Journal of separation science. >Computational study of enantioseparation by amylose tris(3,5- dimethylphenylcarbamate)-based chiral stationary phase
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Computational study of enantioseparation by amylose tris(3,5- dimethylphenylcarbamate)-based chiral stationary phase

机译:直链淀粉三(3,5-二甲基苯基氨基甲酸酯)基手性固定相对映体拆分的计算研究

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摘要

The mechanism of chiral separation on amylose tris(3,5- dimethylphenylcarbamate) is studied with docking simulations of enantiomers by molecular dynamics. All-atom models of amylose tris(3,5-dimethylphenylcarbamate) on the modified silica gel surface were constructed for the docking simulations of metalaxyl and benalaxyl. The elution orders and energetic differences were also predicted based on the intermolecular interactions, which were in agreement with the experimental results. The radial distribution function was employed to analyze the structural features of the enantiomer-chiral stationary phase complex and used to elucidate the mechanism of chiral separation. The separation of metalaxyl and benalaxyl is mainly controlled by the hydrogen bond. And the binding sites had slight differences for the pair of enantiomers, but obvious differences between different chemicals.
机译:通过分子动力学对映体对接模拟研究了直链淀粉三(3,5-二甲基苯基氨基甲酸酯)手性分离的机理。构造了改性硅胶表面上直链淀粉三(3,5-二甲基苯基氨基甲酸酯)的全原子模型,用于甲霜灵和苯那霜灵的对接模拟。还根据分子间的相互作用预测了洗脱顺序和能量差异,这与实验结果相符。利用径向分布函数分析了对映异构体-手性固定相配合物的结构特征,并阐明了手性分离的机理。甲霜灵和苯霜灵的分离主要受氢键控制。而且这对对映异构体的结合位点略有不同,但是不同化学物质之间的结合位点却明显不同。

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