Chiral separation of the clinically important compounds fucose and pipecolic acid using ce: Determination of the most effective chiral selector
| Autor: | Hadjistasi, Christoforos A., Stavrou, Ioannis J., Stefan‐Van Staden, Raluca‐Ioana, Aboul‐Enein, Hassan Y., Kapnissi‐Christodoulou, Constantina P. |
|---|---|
| Přispěvatelé: | Kapnissi‐Christodoulou, Constantina P. [0000-0003-3755-1052], Stavrou, Ioannis J. [0000-0002-9780-4333] |
| Rok vydání: | 2013 |
| Předmět: |
surfactant
polymer capillary electrophoresis carbonyl derivative chirality electrolyte fluorenylmethyloxycarbonyl chloride ionic liquids pipecolic acid sensitivity analysis fucose enantiomer alkenesulfonic acid enantioselectivity controlled study biological functions poly(sodium n undecanoyl leucine valinate) separation technique ionic liquid concentration (parameters) 5 amino 2 naphthalene sulfonic acid pH article Electrophoresis Capillary enantioseparation Stereoisomerism dextro alanine tert butyl ester lactate unclassified drug priority journal cyclodextrin electrophoresis Pipecolic Acids beta cyclodextrin sulfonic acid Pharmaceutical chemistry |
| Zdroj: | Chirality |
| Popis: | ID: 1061 In: Chirality, Vol. 25, no. 9 (Sept. 2013), p.556-560. Summary: ABSTRACT In this study, simple electrophoretic methods were developed for the chiral separation of the clinically important compounds fucose and pipecolic acid. In recent years, these analytes, and particularly their individual enantiomers, have attracted considerable attention due to their role in biological functions and disorders. The detectability and sensitivity of pipecolic acid and fucose were improved by reacting them with fluorenylmethyloxycarbonyl chloride (FMOC‐Cl) and 5‐amino‐2‐naphthalene‐sulfonic acid (ANSA), respectively. The enantioseparation conditions were optimized by initially investigating the type of the chiral selector. Different chiral selectors, such as polymeric surfactants and cyclodextrins, were used and the most effective ones were determined with regard to resolution and analysis time. A 10‐mM β‐cyclodextrin was able to separate the enantiomers of ANSA‐DL‐fucose and the polymeric surfactant poly(sodium N‐undecanoyl‐LL‐leucine‐valinate) was able to separate the enantiomers of FMOC‐DL‐pipecolic acid, with resolution values of 3.45 and 2.78, respectively. Additional parameters, such as the concentration and the pH of the background electrolyte (BGE), the concentration of the chiral selector, and the addition of modifiers were examined in order to optimize the separations. The addition of the chiral ionic liquid D‐alanine tert‐butyl ester lactate into the BGE was also investigated, for the first time, in order to improve resolution of the enantiomers. Chirality 25:556–560, 2013. © 2013 Wiley Periodicals, Inc. |
| Databáze: | OpenAIRE |
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