Examination of Structural Changes of Polymeric Amino Acid-Based Surfactants on Enantioselectivity: Effect of Amino Acid Order, Steric Factors, and Number and Position of Chiral Centers
作者:Eugene Billiot、Isiah M. Warner
DOI:10.1021/ac9908804
日期:2000.4.1
In this study, a large number of polymeric chiral surfactants were examined and their performances in terms of enantiomeric resolution compared for a variety of chiral analytes. The surfactants investigated in this study include all possible dipeptide combinations of the l-form of alanine, valine, leucine, and the achiral amino acid glycine (except glycine-glycine). Also included in this study were the single amino acid surfactants of alanine, valine, and leucine as well as the single chiral center dipeptide surfactant poly(sodium undecyl-l-leucine-β-alanine) (poly l-SULβA). Several different aspects of polymeric dipeptide surfactants, as they pertain to chiral separations, are examined. Some of the factors investigated in this report include the effect of position and number of chiral centers, amino acid order, and steric effects.
在本研究中,考察了大量聚合物手性表面活性剂,并比较了它们在多种手性分析物中对映体分辨性能的表现。本研究所调查的表面活性剂包括了所有可能的l-型丙氨酸、缬氨酸、亮氨酸以及非手性氨基酸甘氨酸(甘氨酸-甘氨酸除外)的二肽组合。研究中还包括了单一氨基酸表面活性剂的丙氨酸、缬氨酸和亮氨酸,以及具有单一手性中心的二肽表面活性剂聚(十一烷基-l-亮氨酸-β-丙氨酸钠)(聚l-SULβA)。本研究审查了与手性分离相关的聚二肽表面活性剂的几个不同方面。报告中调查的一些因素包括手性中心位置和数量的效应、氨基酸顺序及立体效应。