期刊
CHIRALITY
卷 16, 期 8, 页码 509-515出版社
WILEY
DOI: 10.1002/chir.20068
关键词
binding constants; amino acids; cyclodextrins; dipeptides; potentiometric titration; capillary electrophoresis; inclusion complex
Cyclodextrins are well known for their ability to separate enantiomers of drugs, natural products, and other chiral substances using HPLC, GC, or CE. The resolution of the enantiomers is due to the formation of diastereomeric complexes between the cyclodextrin and the pairs of enantiomers. The aim of this study was to determine the binding constants of the complexes between alpha- and beta-cyclodextrin and the enantiomers of a series of aliphatic and aromatic amino acids, and dipeptides, using a potentiometric titration method. The results of this method are compared to other methods, and correlated to findings in cyclodextrin-modified capillary electrophoresis and possible complex structures. Potentiometric titration was found to be an appropriate tool to determine the binding constants of cyclodextrin inclusion complexes. (C) 2004 Wiley-Liss, Inc.
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