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首页> 外文期刊>Chirality: The pharmacological, biological, and chemical consequences of molecular asymmetry >Determinationof enantiomeric excess for 2,3-dihydroxy-3-phenylpropionate compounds by capillary electrophoresis using hydroxypropyl-beta-cyclodextrin as chiral selector
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Determinationof enantiomeric excess for 2,3-dihydroxy-3-phenylpropionate compounds by capillary electrophoresis using hydroxypropyl-beta-cyclodextrin as chiral selector

机译:使用羟丙基-β-环糊精作为手性选择剂的毛细管电泳测定2,3-二羟基-3-苯基丙酸酯化合物的对映体过量

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摘要

A new capillary zone electrophoresis (CZE) method was developed to separate three chiral 2,3-dihydroxy-3-phenylpropionite enantiomers using neutral hydroxypropyl-beta-CD (HP-beta-CD) as chiral selector and borate as background electrolyte. The results showed that HP-P-CD exhibited good enantioselectivity and high resolution was achieved under the optimum condition of pH 10.3, 200 mM borate buffer containing 6% methanol and 50 mM HP-beta-CD at 15 kV and 20 degrees C within 16 min. The precision of the method was <0.9% for migration time and 4.5% for corrected peak area. In addition, the developed method was successfully applied to the determination of enantiomeric excess (ee) of synthetic 2,3-dihydroxy-3-phenylpropionate samples. With this method, low as 0.2% impurity of the undesirable enantiomer in the presence of high amount of target enantiomer was determined. The results demonstrated that the proposed CZE method is a simple and useful technique and is applicable to ee assay of 2,3-dihydroxy-3-phenylpropionate enantiomers.
机译:开发了一种新的毛细管区带电泳(CZE)方法,以中性羟丙基-β-CD(HP-β-CD)为手性选择剂,以硼酸盐为背景电解质,分离了三种手性2,3,2-二羟基-3-苯基丙酸对映​​体。结果表明,HP-P-CD表现出良好的对映选择性,并且在最佳pH值为10.3的条件下,在16 kV和20摄氏度,15 kV和20摄氏度的条件下,含有6%甲醇和50 mMHP-β-CD的200 mM硼酸盐缓冲液可实现高分辨率分钟对于迁移时间,该方法的精度为<0.9%,对于校正的峰面积,该精度为4.5%。此外,开发的方法已成功地用于测定合成的2,3-二羟基-3-苯基丙酸酯样品的对映体过量(ee)。用这种方法,在存在大量目标对映体的情况下,测定了不希望的对映体的杂质含量低至0.2%。结果表明,所提出的CZE方法是一种简单而有用的技术,可用于2,3-二羟基-3-苯基丙酸酯对映体的ee分析。

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