Enantioseparation of 2-O-beta-D-glucopyranosyl-2H-1,4-benzoxazin-3(4H)-one and its 7-chloro-derivative by capillary zone electrophoresis using native and substituted beta-cyclodextrins as chiral additives |
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Authors: | Shi Yujie Huo Changhong Yao Hongjun Gao Rongfu Zhao Yuying Xu Bingjiu |
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Institution: | School of Pharmaceutical Sciences, Peking University, 38 Xueyuan Road, Beijing 100083, China. |
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Abstract: | Efficient, rapid and inexpensive methods were established for the chiral separation of two glucopyranosyl compounds from plant extracts, by capillary zone electrophoresis (CZE). Baseline separation was achieved for both compounds. Several native cyclodextrins and their derivatives were tried as chiral selectors. CM-beta-CD and HP-beta-CD (with addition of acetonitrile in the buffer) gave rise to optimal chiral separation for the two compounds, respectively, each within a few minutes. The effects of several parameters on the chiral separation were studied. |
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Keywords: | Capillary zone electrophoresis Enantiomers Chiral separation Cyclodextrins |
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