Chiral Separations by Liquid Chromatography: Theory and by Hassan Y. Aboul-Enein, Imran Ali

By Hassan Y. Aboul-Enein, Imran Ali

This booklet bargains with the paintings of chiral solution via liquid chromatography, concentrating on high-performance liquid chromatography, sub- and supercritical fluid chromatography, capillary electrochromatography, and thin-layer chromatography. those tools are tested as they're utilized in research and improvement of prescription drugs, xenobiotics, and different chiral molecules. Aboul-Einen is important scientist on the King Faisal expert health facility and learn heart, Saudi Arabia. Ali is scientist on the nationwide Institute of Hydrology, India. Annotation c2003 publication information, Inc., Portland, OR

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A more recently developed technique, simulated moving-bed chromatography, has been very successful for chiral separations at the preparative scale. This technique affords the separation of large amounts of enantiomers by means of developing suitable chiral selectors and mobile phases [42]. 9 DETECTION IN LIQUID CHROMATOGRAPHY In most of chiral resolutions by liquid chromatography, a UV detector is used, because most racemic drugs and pharmaceuticals are UV sensitive. However, conductivity, fluorescence, refractive index, and other detectors have also been used.

Overbeke AV, Sandra P, Medvedovici A, Baeyens W, Aboul-Enein HY, Chirality 9: 126 (1997). Phinney KW, Sanders LC, Wise SA, Anal Chem 70: 2331 (1998). Duval R, Le´veˆque H, Prigent Y, Aboul-Enein HY, Biomed Chromatogr 15: 202 (2001). ), p. 299, VCH Verlag, Weinheim, Germany (2001). Pretorius V, Hopkins BJ, Schieke JD, J Chromatogr 99: 23 (1974). Tsuda T, Nomura K, Nagakawa G, J Chromatogr 248: 241 (1982). Terabe S, Otsuka K, Ichikawa K, Tsuchiya A, Ando T, Anal Chem 56: 111 (1984). Schuring V, Wistuba D, Electrophoresis 20: 2313 (1999).

Both Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved. FIGURE 8 Chemical structures and chemical and trade names of most of the commonly used polysaccharide-based CSPs. Copyright 2003 by Marcel Dekker, Inc. All Rights Reserved. CSPs (CTA-I and CTA-II) have inverse selectivity for Tro¨ger’s base and trans1,2-diphenyloxirane racemates. These characteristics of CTA CSPs are responsible for good chiral resolution of small cyclic carbonyl compounds [42]. In 2001 Aboul-Enein and Ali [63] observed the reversed order of elution of nebivolol on a Chiralpak AD column when ethanol and 2-propanol were used separately as the mobile phases.

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