USE OF BETA-CYCLODEXTRIN POLYMER AS A CHIRAL SELECTOR IN CAPILLARY ELECTROPHORESIS

被引:63
作者
ATURKI, Z [1 ]
FANALI, S [1 ]
机构
[1] CNR,IST CROMATOG,AREA RIC ROMA,I-00016 MONTEROTONDO,ITALY
关键词
D O I
10.1016/0021-9673(94)80061-8
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Enantiomers of several basic compounds of pharmaceutical interest were successfully separated by capillary electrophoresis using a modified beta-cyclodextrin polymer. As the cyclodextrin contained carboxylic groups, the chiral selector could be used in either an uncharged or a charged mode, selecting the appropriate pH of the background electrolyte. The effect of the pH of the background electrolyte on the effective mobility, resolution and selectivity was studied in the range 2.6-6.2 for the enantiomer resolution of beta-hydroxyphenylethylamine, norphenylephrine, terbutaline, ephedrine, norephedrine, ketamine, epinephrine and propranolol. Very good enantiomeric resolution was achieved for all the compounds except for ephedrine and norephedrine (R < 0.5). An increase in the pH of the electrolyte caused an inversion of mobility for either terbutaline and propranolol owing to strong complexation with the negatively charged polymer.
引用
收藏
页码:137 / 146
页数:10
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