1
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Zhou J, Wan M, Dai X, Yang H, Yang Y, Ou J, Liao M, Liu J, Wang L. Polar-embedded phenyl dendritic stationary phase for multi-mode chromatographic separation. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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2
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Liao S, Dillon JT, Huang C, Santos E, Huang Y. Silver (I)-dimercaptotriazine functionalized silica: A highly selective liquid chromatography stationary phase targeting unsaturated molecules. J Chromatogr A 2021; 1645:462122. [PMID: 33853010 DOI: 10.1016/j.chroma.2021.462122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/25/2021] [Accepted: 03/28/2021] [Indexed: 11/26/2022]
Abstract
Silver(I)-mercaptopropyl (Ag-MP) functionalized silica gel has demonstrated its effectiveness in separating various unsaturated organic compounds including unsaturated fatty acid ethyl esters (FAEEs), triglycerols (TAGs) and long-chain alkyl ketones (alkenones). While Ag-MP stationary phase displays many advantages over the conventional silver ion-impregnated silica gel (e.g., stability, high recovery, etc.), potential drawbacks of Ag-MP include relatively low retentions for unsaturated molecules, which could limit chromatographic resolutions under certain circumstances. In this study, we evaluate a new silver-thiolate stationary phase: silver(I)-dimercaptotriazine (Ag-DMT) functionalized silica gel targeting the separation of unsaturated compounds. We show Ag-DMT affords substantially higher retention factors, peak resolutions and capacities for TAGs and FAEEs than Ag-MP does. Ag-DMT also yields higher purity eicosapentaenoic acid (EPA) from fish oil FAEE mixtures than Ag-MP. In addition, Ag-DMT resolves double bond positional and cis/trans-isomers of C18:1 fatty acid methyl esters (FAMEs) as well as unsaturated methyl/ethyl alkenones with different number of double bonds. Based on van't Hoff plots, enthalpy changes during the adsorption of unsaturated FAEEs onto Ag-DMT are ~2 times higher than those on Ag-MP. Such difference may be attributed to the stronger electron-withdrawing effect of the thiol group on DMT, which results in more positively charged silver ions hence greater interactions with unsaturated molecules. The stronger interaction between double bonds and Ag-DMT is further corroborated by density-functional theory (DFT) calculations. Ag-DMT shows its high stability for repeated uses in the separation of TAGs over 319 runs, with peak resolutions decreasing by < 3%. Collectively, our data demonstrate the exceptionally high efficiency of Ag-DMT column for separating unsaturated molecules.
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Affiliation(s)
- Sian Liao
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, USA
| | - James T Dillon
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, USA
| | - Cancan Huang
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912, USA
| | - Ewerton Santos
- Department of Earth, Environmental and Planetary Sciences, Brown University, 324 Brook Street, Providence, Rhode Island 02912, USA
| | - Yongsong Huang
- Department of Earth, Environmental and Planetary Sciences, Brown University, 324 Brook Street, Providence, Rhode Island 02912, USA.
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3
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Gogolishvili OS, Reshetova EN. Chromatographic enantioseparation and adsorption thermodynamics of hydroxy acids and their derivatives on antibiotic-based chiral stationary phases as affected by eluent pH. Chromatographia 2020. [DOI: 10.1007/s10337-020-03978-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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4
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Zhang Q, Zhang J, Wang X, Yu J, Guo X. Enantioseparation of Eight Pairs of Tetralone Derivative Enantiomers on Cellulose Based Chiral Stationary Phase by HPLC. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412915666181130111103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Tetralone derivatives, important resources for the development of new drugs
which can act in the treatment of central nervous system disorders or participate in synthesis reaction
for the synthesis of various pharmaceuticals, have great research value and a bright prospect in exploitation.
Methods:
A novel chiral HPLC method for efficient enantioseparation of eight tetralone derivative enantiomers
was developed on cellulose based CHIRALPAK IC chiral stationary phase under normal
mode by investigating the effects of type and content of organic modifier, column temperature and flow
rate on retention and enantioselectivity. Besides, the specificity, linearity, stability, precision, accuracy
and robustness of this method were also validated.
Results:
Satisfactory enantioseparation was obtained for all enantiomers in n-hexane/2-propanol mobile
phase system at ambient temperature. The thermodynamic study indicated that the solute transfer from
the mobile to stationary phase was enthalpically favorable, and the process of enantioseparation was
mainly enthalpy controlled. This method met the requirements for quantitative determination of tetralone
derivative enantiomers.
Conclusion:
This study can provide great and important application value for enantioseparation of eight
pairs of newly synthesized tetralone derivative enantiomers under normal mode using CHIRALPAK IC
chiral column.
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Affiliation(s)
- Qiongwen Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, China
| | - Junyuan Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, China
| | - Xia Wang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, China
| | - Jia Yu
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, China
| | - Xingjie Guo
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, 110016, Shenyang, Liaoning Province, China
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5
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Ren X, Luo Q, Zhou D, Zhang K, Gao D, Fu Q, Liu J, Xia Z, Wang L. Thermoresponsive chiral stationary phase functionalized with the copolymer of β-cyclodextrin and N-isopropylacrylamide for high performance liquid chromatography. J Chromatogr A 2020; 1618:460904. [PMID: 31992472 DOI: 10.1016/j.chroma.2020.460904] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/04/2020] [Accepted: 01/20/2020] [Indexed: 11/17/2022]
Abstract
A novel chiral stationary phase (CSP) was prepared through the reaction of surface-initiated atom transfer radical polymerization (ATRP) by the copolymerization of thermoresponsive N-isopropylacrylamide (NIPAM) and β-cyclodextrin (β-CD) on the silica beads for high performance liquid chromatography (HPLC). X-ray photoelectron spectroscopy (XPS), elemental analysis (EA), Fourier transform infrared spectrometry (FT-IR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) were applied to characterize the surface property of modified silica. Thermoresponsive modulation for the effect on enantioselectivity were investigated with chiral reagents including 1-phenyl-1-propanol, styrene oxide, 2-phenylpropionic acid and commercial chiral drugs comprising ibuprofen and labetalol hydrochloride. The column efficiency was evaluated by chromatographic parameters including retention factor (k), selective factor (α), resolution (Rs), plate number (N) and peak tailing factor (Tf). The results showed that five chiral solutes could be separated on the prepared smart column. And the selectivity of these compounds could be modulated by regulating the column temperature. It was contributed to the thermoresponsive NIPAM assisting β-CD to separate these chiral compounds. These results indicated that the thermoresponsive CSP would be a potential tool for separation of hydrophilic and hydrophobic chiral drugs and this paper provided a novel method for chiral separation in the future.
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Affiliation(s)
- Xiujun Ren
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Qiurong Luo
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Di Zhou
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Kailian Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Die Gao
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Qifeng Fu
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Jun Liu
- Key Laboratory of Medical Electrophysiology, Ministry of Education, Institute of Cardiovascular Research of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Zhining Xia
- School of Pharmacy, Chongqing University, Chongqing, 401331, China.
| | - Lujun Wang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China; Key Laboratory of Medical Electrophysiology, Ministry of Education, Institute of Cardiovascular Research of Southwest Medical University, Luzhou, Sichuan, 646000, China.
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6
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Reshetova EN, Kopchenova MV, Vozisov SE, Vasyanin AN, Asnin LD. Enantioselective retention mechanisms of dipeptides on antibiotic-based chiral stationary phases: Leucyl-leucine, glycyl-leucine, and leucyl-glycine as case studies. J Chromatogr A 2019; 1602:368-377. [PMID: 31213361 DOI: 10.1016/j.chroma.2019.06.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/04/2019] [Accepted: 06/10/2019] [Indexed: 11/20/2022]
Abstract
Chromatographic behaviors of dipeptides consisting of leucine and glycine were studied on two antibiotic-based chiral stationary phases (CSPs) with teicoplanin (Chirobiotic T) or ristocetin A (Chirobiotic R) as chiral selectors under reversed-phase conditions. The effect of mobile phase pH on the retention of stereoisomers of dipeptides was investigated and thermodynamic characteristic of adsorption were measured at different pH values. It was shown that the retention of dipeptides depends on the ionization of their molecules in the mobile phase, as different ionic forms have different affinity towards antibiotic selectors. Enantioselectivity of the bound antibiotics with respect to Leu-Leu stereoisomers was achieved via steric modulation of ion-ion interactions between the solute and the selector, while in the case of Gly-Leu enantiomers non-ionic interactions such as hydrogen bonding might play the key role. In both cases, the dipeptides terminating in D-Leu were retained stronger than their optical antipodes, whereas the enantiomers of Leu-Gly were hardly separated. The regression analysis of the retention data applying the Horvath-Melander-Molnar model revealed that different types of enantioselectivity resides in particular ionic forms of the compounds: cations are responsible for the separation of diastereomeric pairs and the anionic and zwitterionic forms have a universal enantioselectivity on the Chirobiotic T CSP, and the anions and zwitterions are the enantioselective forms for the Chirobiotic R CSP.
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Affiliation(s)
- Elena N Reshetova
- Institute of Technical Chemistry of the Ural Branch of the Russian Academy of Sciences, 3 Academician Korolev Str., Perm 614013, Russia
| | | | - Stepan E Vozisov
- Perm National Research Polytechnic University, 29 Komsomolsky Al., Perm 614990, Russia
| | | | - Leonid D Asnin
- Perm National Research Polytechnic University, 29 Komsomolsky Al., Perm 614990, Russia.
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7
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Cheng C, Liao CF. Novel Dual Two-Dimensional Liquid Chromatography Online Coupled to Ultraviolet Detector, Fluorescence Detector, Ion-Trap Mass Spectrometer for Short Peptide Amino Acid Sequence Determination with Bottom-Up Strategy. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201700380] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cheanyeh Cheng
- Research Center for Analysis and Identification and Department of Chemistry; Chung Yuan Christian University, Chungli District; Taoyuan City Taiwan 32023 R. O. China
| | - Chien-Fu Liao
- Research Center for Analysis and Identification and Department of Chemistry; Chung Yuan Christian University, Chungli District; Taoyuan City Taiwan 32023 R. O. China
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8
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Orosz T, Forró E, Fülöp F, Lindner W, Ilisz I, Péter A. Effects of N-methylation and amidination of cyclic β-amino acids on enantioselectivity and retention characteristics using Cinchona alkaloid- and sulfonic acid-based chiral zwitterionic stationary phases. J Chromatogr A 2018; 1535:72-79. [DOI: 10.1016/j.chroma.2017.12.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/12/2017] [Accepted: 12/31/2017] [Indexed: 10/18/2022]
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9
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Flieger J, Trębacz H, Pizoń M, Kowalska A, Szczęsna A, Plech T. High-performance liquid chromatography thermodynamic study of new potential antiepileptic compounds on a cholesterol column using isocratic elution with methanol/water and acetonitrile/water eluent systems. J Sep Sci 2017; 40:4176-4190. [DOI: 10.1002/jssc.201700748] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 08/25/2017] [Accepted: 08/25/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Jolanta Flieger
- Department of Analytical Chemistry; Medical University of Lublin; Lublin Poland
| | - Hanna Trębacz
- Chair and Department of Biophysics; Medical University of Lublin; Lublin Poland
| | - Magdalena Pizoń
- Department of Analytical Chemistry; Medical University of Lublin; Lublin Poland
| | - Anna Kowalska
- Department of Analytical Chemistry; Medical University of Lublin; Lublin Poland
| | - Agnieszka Szczęsna
- Chair and Department of Biophysics; Medical University of Lublin; Lublin Poland
| | - Tomasz Plech
- Department of Pharmacology; Medical University of Lublin; Lublin Poland
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10
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Su R, Hou Z, Sang L, Zhou ZM, Fang H, Yang X. Enantioseparation of angiotensin II receptor type 1 blockers: evaluation of 6-substituted carbamoyl benzimidazoles on immobilized polysaccharide-based chiral stationary phases. Unusual temperature behavior. J Chromatogr A 2017; 1515:118-128. [DOI: 10.1016/j.chroma.2017.07.081] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/25/2017] [Accepted: 07/26/2017] [Indexed: 10/19/2022]
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11
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Feder-Kubis J, Flieger J, Tatarczak-Michalewska M, Płazińska A, Madejska A, Swatko-Ossor M. Renewable sources from plants as the starting material for designing new terpene chiral ionic liquids used for the chromatographic separation of acidic enantiomers. RSC Adv 2017. [DOI: 10.1039/c7ra03310a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of cheap and natural resources is an important topic in green chemistry.
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Affiliation(s)
- Joanna Feder-Kubis
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
| | - Jolanta Flieger
- Department of Analytical Chemistry
- Medical University of Lublin
- 20-093 Lublin
- Poland
| | | | - Anita Płazińska
- Department of Biopharmacy
- Medical University of Lublin
- 093 Lublin
- Poland
| | - Anna Madejska
- Department of Analytical Chemistry
- Medical University of Lublin
- 20-093 Lublin
- Poland
| | - Marta Swatko-Ossor
- Department of Biochemistry and Biotechnology
- Medical University of Lublin
- 20-093 Lublin
- Poland
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12
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Bystrická Z, Bystrický R, Lehotay J. Thermodynamic study of HPLC enantioseparations of some sulfur-containing amino acids on teicoplanin columns in ion-pairing reversed-phase mode. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1247715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Zuzana Bystrická
- Institute of Medical Chemistry, Biochemistry and Clinical Biochemistry, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Roman Bystrický
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Jozef Lehotay
- Department of Chemistry, Faculty of Natural Science, University of SS. Cyril and Methodius, Trnava, Slovakia
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13
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Reshetova E. Chromatographic retention and thermodynamics of the adsorption of α-phenylcarboxylic acid enantiomers on a chiral stationary phase with a grafted antibiotic eremomycin: Effect of eluent pH. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2015.1137004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Elena Reshetova
- Institute of Technical Chemistry, The Ural Branch of the Russian Academy of Sciences, Perm, Russia
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14
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Aljhni R, Andre C, Lethier L, Guillaume YC. An HPLC chromatographic framework to analyze the β-cyclodextrin/solute complexation mechanism using a carbon nanotube stationary phase. Talanta 2015; 144:226-32. [DOI: 10.1016/j.talanta.2015.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 06/03/2015] [Accepted: 06/05/2015] [Indexed: 11/30/2022]
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15
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Patel DC, Breitbach ZS, Wahab MF, Barhate CL, Armstrong DW. Gone in seconds: praxis, performance, and peculiarities of ultrafast chiral liquid chromatography with superficially porous particles. Anal Chem 2015; 87:9137-48. [PMID: 25945416 DOI: 10.1021/acs.analchem.5b00715] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A variety of brush-type chiral stationary phases (CSPs) were developed using superficially porous particles (SPPs). Given their high efficiencies and relatively low back pressures, columns containing these particles were particularly advantageous for ultrafast "chiral" separations in the 4-40 s range. Further, they were used in all mobile phase modes and with high flow rates and pressures to separate over 60 pairs of enantiomers. When operating under these conditions, both instrumentation and column packing must be modified or optimized so as not to limit separation performance and quality. Further, frictional heating results in axial thermal gradients of up to 16 °C and radial temperature gradients up to 8 °C, which can produce interesting secondary effects in enantiomeric separations. It is shown that the kinetic behavior of various CSPs can differ from one another as much as they differ from the well-studied C18 reversed phase media. Three additional interesting aspects of this work are (a) the first kinetic evidence of two different chiral recognition mechanisms, (b) a demonstration of increased efficiencies at higher flow rates for specific separations, and
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Affiliation(s)
- Darshan C Patel
- Department of Chemistry and Biochemistry, University of Texas at Arlington , Arlington, Texas 76019, United States
| | - Zachary S Breitbach
- Department of Chemistry and Biochemistry, University of Texas at Arlington , Arlington, Texas 76019, United States
| | - M Farooq Wahab
- Department of Chemistry and Biochemistry, University of Texas at Arlington , Arlington, Texas 76019, United States
| | - Chandan L Barhate
- Department of Chemistry and Biochemistry, University of Texas at Arlington , Arlington, Texas 76019, United States
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington , Arlington, Texas 76019, United States.,AZYP LLC , 700 Planetarium Place, Arlington, Texas 76019, United States
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16
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Gutiérrez-Climente R, Gómez-Caballero A, Halhalli M, Sellergren B, Goicolea MA, Barrio RJ. Iniferter-mediated grafting of molecularly imprinted polymers on porous silica beads for the enantiomeric resolution of drugs. J Mol Recognit 2015; 29:106-14. [DOI: 10.1002/jmr.2443] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 09/23/2014] [Accepted: 10/27/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Raquel Gutiérrez-Climente
- Department of Analytical Chemistry, Faculty of Pharmacy; University of the Basque Country; Vitoria-Gasteiz (Álava) Spain
| | - Alberto Gómez-Caballero
- Department of Analytical Chemistry, Faculty of Pharmacy; University of the Basque Country; Vitoria-Gasteiz (Álava) Spain
| | - Mahadeo Halhalli
- INFU, Faculty of Chemistry; Technical University of Dortmund; Dortmund Germany
| | - Börje Sellergren
- Department of Biomedical Sciences, Faculty of Health and Society; Malmö University; Malmö Sweden
| | - M. Aránzazu Goicolea
- Department of Analytical Chemistry, Faculty of Pharmacy; University of the Basque Country; Vitoria-Gasteiz (Álava) Spain
| | - Ramón J. Barrio
- Department of Analytical Chemistry, Faculty of Pharmacy; University of the Basque Country; Vitoria-Gasteiz (Álava) Spain
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17
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Comparison of the separation performances of cinchona alkaloid-based zwitterionic stationary phases in the enantioseparation of β2- and β3-amino acids. Molecules 2014; 20:70-87. [PMID: 25546622 PMCID: PMC6272689 DOI: 10.3390/molecules20010070] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 12/15/2014] [Indexed: 01/10/2023] Open
Abstract
The enantiomers of twelve unusual β2- and β3-homoamino acids containing the same side-chains were separated on chiral stationary phases containing a quinine- or quinidine-based zwitterionic ion-exchanger as chiral selector. The effects of the mobile phase composition, the nature and concentration of the acid and base additives and temperature on the separations were investigated. The changes in standard enthalpy, ∆(∆H°), entropy, ∆(∆S°), and free energy, ∆(∆G°), were calculated from the linear van’t Hoff plots derived from the ln α vs.1/T curves in the studied temperature range (10–50 °C). The values of the thermodynamic parameters depended on the nature of the selectors, the structures of the analytes, and the positions of the substituents on the analytes. A comparison of the zwitterionic stationary phases revealed that the quinidine-based ZWIX(−)™ column exhibited much better selectivity for both β2- and β3-amino acids than the quinine-based ZWIX(+)™ column, and the separation performances of both the ZWIX(+)™ and ZWIX(−)™ columns were better for β2-amino acids. The elution sequence was determined in some cases and was observed to be R <S and S < R on the ZWIX(+)™ and ZWIX(−)™ columns, respectively.
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18
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Wang Q, Li J, Yang X, Xu L, Shi ZG, Xu LY. Investigation on performance of zirconia and magnesia–zirconia stationary phases in hydrophilic interaction chromatography. Talanta 2014; 129:438-47. [DOI: 10.1016/j.talanta.2014.06.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 06/05/2014] [Accepted: 06/10/2014] [Indexed: 11/28/2022]
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19
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Ilisz I, Gecse Z, Pataj Z, Fülöp F, Tóth G, Lindner W, Péter A. Direct high-performance liquid chromatographic enantioseparation of secondary amino acids on Cinchona alkaloid-based chiral zwitterionic stationary phases. Unusual temperature behavior. J Chromatogr A 2014; 1363:169-77. [DOI: 10.1016/j.chroma.2014.06.087] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 06/04/2014] [Accepted: 06/25/2014] [Indexed: 11/17/2022]
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20
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d- and l-amino acids in Antarctic lakes: assessment of a very sensitive HPLC-MS method. Anal Bioanal Chem 2014; 406:5259-70. [DOI: 10.1007/s00216-014-7961-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 05/19/2014] [Accepted: 06/06/2014] [Indexed: 10/25/2022]
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21
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Ilisz I, Pataj Z, Gecse Z, Szakonyi Z, Fülöp F, Lindner W, Péter A. Unusual Temperature-Induced Retention Behavior of Constrained β-Amino Acid Enantiomers on the Zwitterionic Chiral Stationary Phases ZWIX(+) and ZWIX(-). Chirality 2014; 26:385-93. [DOI: 10.1002/chir.22333] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 03/24/2014] [Accepted: 03/25/2014] [Indexed: 12/31/2022]
Affiliation(s)
- István Ilisz
- Department of Inorganic and Analytical Chemistry; University of Szeged; Szeged Hungary
| | - Zoltán Pataj
- Department of Inorganic and Analytical Chemistry; University of Szeged; Szeged Hungary
| | - Zsanett Gecse
- Department of Inorganic and Analytical Chemistry; University of Szeged; Szeged Hungary
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry; University of Szeged; Szeged Hungary
| | - Wolfgang Lindner
- Department of Analytical Chemistry; University of Vienna; Vienna Austria
| | - Antal Péter
- Department of Inorganic and Analytical Chemistry; University of Szeged; Szeged Hungary
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22
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Ilisz I, Grecsó N, Aranyi A, Suchotin P, Tymecka D, Wilenska B, Misicka A, Fülöp F, Lindner W, Péter A. Enantioseparation of β2-amino acids on cinchona alkaloid-based zwitterionic chiral stationary phases. Structural and temperature effects. J Chromatogr A 2014; 1334:44-54. [DOI: 10.1016/j.chroma.2014.01.075] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/22/2014] [Accepted: 01/27/2014] [Indexed: 10/25/2022]
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23
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Gondová T, Petrovaj J, Kutschy P, Armstrong DW. Stereoselective separation of spiroindoline phytoalexins on R-naphthylethyl cyclofructan 6-based chiral stationary phase. J Chromatogr A 2013; 1272:100-5. [DOI: 10.1016/j.chroma.2012.11.083] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Revised: 11/20/2012] [Accepted: 11/28/2012] [Indexed: 11/25/2022]
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24
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Denderz N, Lehotay J. Application of the van’t Hoff dependences in the characterization of molecularly imprinted polymers for some phenolic acids. J Chromatogr A 2012; 1268:44-52. [DOI: 10.1016/j.chroma.2012.10.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 10/08/2012] [Accepted: 10/09/2012] [Indexed: 10/27/2022]
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25
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Ilisz I, Aranyi A, Pataj Z, Péter A. Enantiomeric separation of nonproteinogenic amino acids by high-performance liquid chromatography. J Chromatogr A 2012; 1269:94-121. [DOI: 10.1016/j.chroma.2012.07.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 07/02/2012] [Accepted: 07/06/2012] [Indexed: 10/28/2022]
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26
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Yu H, Yin C, Jia C, Jin Y, Ke Y, Liang X. Evaluation of “click” binaphthyl chiral stationary phases by liquid chromatography. Chirality 2012; 24:391-9. [DOI: 10.1002/chir.22039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Accepted: 02/08/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Hui Yu
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy; East China University of Science and Technology; Shanghai; China
| | - Chenghua Yin
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy; East China University of Science and Technology; Shanghai; China
| | - Cunyu Jia
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy; East China University of Science and Technology; Shanghai; China
| | - Yu Jin
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy; East China University of Science and Technology; Shanghai; China
| | - Yanxiong Ke
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy; East China University of Science and Technology; Shanghai; China
| | - Xinmiao Liang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian; China
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27
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Fernandes C, Tiritan ME, Cass Q, Kairys V, Fernandes MX, Pinto M. Enantioseparation and chiral recognition mechanism of new chiral derivatives of xanthones on macrocyclic antibiotic stationary phases. J Chromatogr A 2012; 1241:60-8. [PMID: 22552201 DOI: 10.1016/j.chroma.2012.04.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 03/28/2012] [Accepted: 04/02/2012] [Indexed: 11/16/2022]
Abstract
A chiral HPLC method using four macrocyclic antibiotic chiral stationary phases (CSPs) has been investigated for determination of the enantiomeric purity of fourteen new chiral derivatives of xanthones (CDXs). The separations were performed with the CSPs Chirobiotic T, Chirobiotic TAG, Chirobiotic V and Chirobiotic R under multimodal elution conditions (normal-phase, reversed-phase and polar ionic mode). The analyses were performed at room temperature in isocratic mode and UV and CD detection at a wavelength of 254 nm. The best enantioselectivity and resolution were achieved on Chirobiotic R and Chirobiotic T CSPs, under normal elution conditions, with R(S) ranging from 1.25 to 2.50 and from 0.78 to 2.06, respectively. The optimized chromatographic conditions allowed the determination of the enantiomeric ratio of eight CDXs, always higher than 99%. In order to better understand the chromatographic behavior at a molecular level, and the structural features associated with the chiral recognition mechanism, computational studies by molecular docking were carried out using VDock. These studies shed light on the mechanisms involved in the enantioseparation for this important class of chiral compounds.
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Affiliation(s)
- Carla Fernandes
- Centro de Química Medicinal da Universidade do Porto-CEQUIMED-UP, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
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Denderz N, Lehotay J, Čižmárik J, Cibulková Z, Šimon P. Thermodynamic study of molecularly imprinted polymer used as the stationary phase in high performance liquid chromatography. J Chromatogr A 2012; 1235:77-83. [DOI: 10.1016/j.chroma.2012.02.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Revised: 02/17/2012] [Accepted: 02/21/2012] [Indexed: 11/16/2022]
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29
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Enantioseparation of Novel Amino Analogs of Indole Phytoalexins on Macrocyclic Glycopeptide-Based Chiral Stationary Phase. Chromatographia 2011. [DOI: 10.1007/s10337-011-2143-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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30
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Jourdan E, Haroun M, Slama I, Ravel A, Grosset C, Villet A, Peyrin E. Use of an Amino Stationary Phase to Study the Vancomycin Dimerization Dependence on Solute Enantioselectivity. J LIQ CHROMATOGR R T 2011. [DOI: 10.1081/jlc-120020090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Eric Jourdan
- a Equipe de Chimie Analytique, Département de Pharmacochimie Moléculaire , UFR de Pharmacie de Grenoble, Domaine de la Merci , UMR CNR12S‐UFJ 5063, La Tronche , 38700 , France
| | - Mohamed Haroun
- a Equipe de Chimie Analytique, Département de Pharmacochimie Moléculaire , UFR de Pharmacie de Grenoble, Domaine de la Merci , UMR CNR12S‐UFJ 5063, La Tronche , 38700 , France
| | - Ines Slama
- a Equipe de Chimie Analytique, Département de Pharmacochimie Moléculaire , UFR de Pharmacie de Grenoble, Domaine de la Merci , UMR CNR12S‐UFJ 5063, La Tronche , 38700 , France
| | - Anne Ravel
- a Equipe de Chimie Analytique, Département de Pharmacochimie Moléculaire , UFR de Pharmacie de Grenoble, Domaine de la Merci , UMR CNR12S‐UFJ 5063, La Tronche , 38700 , France
| | - Catherine Grosset
- a Equipe de Chimie Analytique, Département de Pharmacochimie Moléculaire , UFR de Pharmacie de Grenoble, Domaine de la Merci , UMR CNR12S‐UFJ 5063, La Tronche , 38700 , France
| | - Annick Villet
- a Equipe de Chimie Analytique, Département de Pharmacochimie Moléculaire , UFR de Pharmacie de Grenoble, Domaine de la Merci , UMR CNR12S‐UFJ 5063, La Tronche , 38700 , France
| | - Eric Peyrin
- a Equipe de Chimie Analytique, Département de Pharmacochimie Moléculaire , UFR de Pharmacie de Grenoble, Domaine de la Merci , UMR CNR12S‐UFJ 5063, La Tronche , 38700 , France
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31
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Ilisz I, Pataj Z, Berkecz R, Misicka A, Tymecka D, Fülöp F, Choi HJ, Hyun MH, Péter A. High-performance liquid chromatographic enantioseparation of β2-amino acids using a long-tethered (+)-(18-crown-6)-2,3,11,12-tetracarboxylic acid-based chiral stationary phase. J Chromatogr A 2010; 1217:1075-82. [DOI: 10.1016/j.chroma.2009.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Revised: 06/29/2009] [Accepted: 07/02/2009] [Indexed: 11/28/2022]
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32
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Lämmerhofer M. Chiral recognition by enantioselective liquid chromatography: mechanisms and modern chiral stationary phases. J Chromatogr A 2009; 1217:814-56. [PMID: 19906381 DOI: 10.1016/j.chroma.2009.10.022] [Citation(s) in RCA: 516] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Revised: 09/30/2009] [Accepted: 10/07/2009] [Indexed: 11/19/2022]
Abstract
An overview of the state-of-the-art in LC enantiomer separation is presented. This tutorial review is mainly focused on mechanisms of chiral recognition and enantiomer distinction of popular chiral selectors and corresponding chiral stationary phases including discussions of thermodynamics, additivity principle of binding increments, site-selective thermodynamics, extrathermodynamic approaches, methods employed for the investigation of dominating intermolecular interactions and complex structures such as spectroscopic methods (IR, NMR), X-ray diffraction and computational methods. Modern chiral stationary phases are discussed with particular focus on those that are commercially available and broadly used. It is attempted to provide the reader with vivid images of molecular recognition mechanisms of selected chiral selector-selectand pairs on basis of solid-state X-ray crystal structures and simulated computer models, respectively. Such snapshot images illustrated in this communication unfortunately cannot account for the molecular dynamics of the real world, but are supposed to be helpful for the understanding. The exploding number of papers about applications of various chiral stationary phases in numerous fields of enantiomer separations is not covered systematically.
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Affiliation(s)
- Michael Lämmerhofer
- Christian Doppler Laboratory for Molecular Recognition Materials, Department of Analytical Chemistry and Food Chemistry, University of Vienna, Waehringer Strasse 38, A-1090 Vienna, Austria.
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33
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Pataj Z, Berkecz R, Ilisz I, Misicka A, Tymecka D, Fülöp F, Armstrong DW, Péter A. High-performance liquid chromatographic chiral separation of β2-homoamino acids. Chirality 2009; 21:787-98. [DOI: 10.1002/chir.20670] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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34
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Determination of vancomycin in human plasma using high-performance liquid chromatography with fluorescence detection. Anal Bioanal Chem 2009; 395:527-32. [PMID: 19655128 DOI: 10.1007/s00216-009-2948-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Revised: 06/13/2009] [Accepted: 07/01/2009] [Indexed: 10/20/2022]
Abstract
A high-performance liquid chromatographic (HPLC) method with fluorescence detection for the quantification of vancomycin in human plasma was developed and validated. The method includes an extraction of vancomycin by deproteinization with acetonitrile. The analyses were carried out at 258 nm as the emission wavelength while exciting at 225 nm on a reversed-phase column (30 cm x 4 mm i.d. x 10 microm Waters Associates microBondapak C18) using a mobile phase composed of methanol and phosphate buffer at pH 6.3. Vancomycin was quantitatively recovered from human plasma samples (>96%) with high values of precision. The separation was completed within 27 min. The calibration curve was linear over the range from 5 to 1,000 ng/mL with the detection and quantification limits of 2 ng/mL and 5 ng/mL, respectively. This method is suitable for the routine assay of plasma samples.
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35
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Rojkovi[cbreve]ová T, Lehotay J, Armstrong DW, [Cbreve]i[zbreve]márik J. Study of the Mechanism of Enantioseparation. X. Comparison Study of Thermodynamic Parameters on Separation of Phenylcarbamic Acid Derivatives Using Vancomycin and Teicoplanin CSPs. J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-200034897] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T. Rojkovi[cbreve]ová
- a Department of Analytical Chemistry , Faculty of Chemical and Food Technology, Slovak University of Technology , Radlinského 9, 812 37 , Bratislava , Slovak Republic
| | - J. Lehotay
- a Department of Analytical Chemistry , Faculty of Chemical and Food Technology, Slovak University of Technology , Radlinského 9, 812 37 , Bratislava , Slovak Republic
| | - D. W. Armstrong
- b Department of Chemistry, Gilman Hall , Iowa State University , Ames , Iowa , USA
| | - J. [Cbreve]i[zbreve]márik
- c Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Comenius University , Bratislava , Slovak Republic
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36
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Rojkovičová T, Lehotay J, Meričko D, Čižmárik J, Armstrong DW. Study of the Mechanism of Enantioseparation. IX. Effect of Temperature on Retention of Chiral Compounds on a Methylated Teicoplanin Chiral Stationary Phase. J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-200028364] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T. Rojkovičová
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9, 812 37 , Bratislava , Slovak Republic
| | - J. Lehotay
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9, 812 37 , Bratislava , Slovak Republic
| | - D. Meričko
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9, 812 37 , Bratislava , Slovak Republic
| | - J. Čižmárik
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Comenius University , Bratislava , Slovak Republic
| | - D. W. Armstrong
- c Department of Chemistry , Iowa State University , Ames , Iowa , USA
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37
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Rojkovičová T, Lehotay J, Krupčík J, Fedurcová A, Čižmárik J, Armstrong DW. Study of the Mechanism of Enantioseparation. VII. Effect of Temperature on Retention of Some Enantiomers of Phenylcarbamic Acid Derivates on a Teicoplanin Aglycone Chiral Stationary Phase. J LIQ CHROMATOGR R T 2009. [DOI: 10.1081/jlc-120037362] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T. Rojkovičová
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9, Bratislava , 812 37 , Slovak Republic
| | - J. Lehotay
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9, Bratislava , 812 37 , Slovak Republic
| | - J. Krupčík
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9, Bratislava , 812 37 , Slovak Republic
| | - A. Fedurcová
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Radlinského 9, Bratislava , 812 37 , Slovak Republic
| | - J. Čižmárik
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Comenius University , Bratislava , Slovak Republic
| | - D. W. Armstrong
- c Department of Chemistry, Gilman Hall , Iowa State University , Ames , Iowa , USA
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38
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Enantioseparation of β-substituted tryptophan analogues with modified cyclodextrins by capillary zone electrophoresis. J Chromatogr A 2009; 1216:3360-5. [DOI: 10.1016/j.chroma.2009.01.083] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2008] [Revised: 01/19/2009] [Accepted: 01/26/2009] [Indexed: 11/23/2022]
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39
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Pataj Z, Ilisz I, Berkecz R, Misicka A, Tymecka D, Fülöp F, Armstrong DW, Péter A. Comparison of performance of Chirobiotic T, T2 and TAG columns in the separation of beta2- and beta3-homoamino acids. J Sep Sci 2009; 31:3688-97. [PMID: 18956385 DOI: 10.1002/jssc.200800388] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The enantiomers of eight unusual beta(2)- and beta(3)-homoamino acids were separated on chiral stationary phases containing the macrocyclic glycopeptide antibiotic teicoplanin (Chirobiotic T or T2) or teicoplanin aglycone (Chirobiotic TAG) as chiral selectors. The effects of the organic modifier, the mobile phase composition, and temperature on the separations were investigated. Linear van't Hoff plots were observed in the studied temperature range, 280-318 K, and the changes in enthalpy, Delta(DeltaH(o)), entropy, Delta(DeltaS(o)), and free energy, Delta(DeltaG(o)) were calculated. The values of the thermodynamic parameters depended on the nature of the selectors, the structures of the analytes, and especially the positions of the substituents on the analytes. A comparison of the separation performances of the macrocyclic glycopeptide stationary phases revealed that the Chirobiotic TAG column exhibited much better selectivity for beta(2)-homoamino acids, while the separation of beta(3)-homoamino acid enantiomers was better on Chirobiotic T or T2. The elution sequence was determined in some cases and was observed to be R < S.
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Affiliation(s)
- Zoltán Pataj
- Department of Inorganic and Analytical Chemistry, University of Szeged, Szeged, Hungary
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40
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Berthod A. Chiral recognition mechanisms with macrocyclic glycopeptide selectors. Chirality 2009; 21:167-75. [DOI: 10.1002/chir.20600] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Excoffon L, Guillaume YC, Woronoff-Lemsi MC, André C. Magnesium effect on testosterone-SHBG association studied by a novel molecular chromatography approach. J Pharm Biomed Anal 2008; 49:175-80. [PMID: 19095394 DOI: 10.1016/j.jpba.2008.10.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2008] [Revised: 10/20/2008] [Accepted: 10/21/2008] [Indexed: 11/27/2022]
Abstract
A biochromatographic approach is developed to measure for the first time thermodynamic data and magnesium (Mg(2+)) effect for the binding of testosterone (TT) to sex hormone-binding globulin (SHBG) in a wide temperature range. For this, the SHBG was immobilized on a chromatographic support. It was established that this novel SHBG column was stable during an extended period of time. The affinity of TT to SHBG is high and changes slightly with the Mg(2+) concentration because the number of Mg(2+) linked to binding is low. The determination of the testosterone retention with the steroid hormone at different Mg(2+) concentrations and temperatures demonstrated that the Mg(2+) binding heat effect associated with this Mg(2+) release or uptake during this binding was in magnitude around 17kJ/mol corresponding to the model describing the electrostatic attraction that occurs between the negatively charged non specific areas of SHBG and the positively charged of magnesium. At all the magnesium concentrations studied, the DeltaH values were negative due to van der Waals interactions and hydrogen bonding which are engaged at the complex interface confirming strong TT-SHBG hydrogen bond networks. As well, the DeltaS values were all positive due to hydrophobic forces in the testosterone-SHBG complex formation. In addition our results suggest that adaptive conformational transitions contribute to the specific testosterone-SHBG complex formation. As well, in the biological Mg(2+) concentration domain, it was clearly demonstrated that there was an uncompetitive inhibition of Mg(2+) on TT-SHBG binding which led an enhancement of bioavailable TT. Our work indicated that our biochromatographic approach could soon become very attractive for study other SHBG-steroid (or phytoestrogen) binding.
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Affiliation(s)
- L Excoffon
- Equipe des Sciences Séparatives Biologiques et Pharmaceutiques, Université de Franche-Comté, Place Saint Jacques, 25030 Besançon Cedex, France
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42
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Ilisz I, Berkecz R, Péter A. Retention mechanism of high-performance liquid chromatographic enantioseparation on macrocyclic glycopeptide-based chiral stationary phases. J Chromatogr A 2008; 1216:1845-60. [PMID: 18762302 DOI: 10.1016/j.chroma.2008.08.041] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Revised: 08/11/2008] [Accepted: 08/13/2008] [Indexed: 10/21/2022]
Abstract
The development of methods for the separation of enantiomers has attracted great interest in the past 20 years, since it became evident that the potential biological or pharmacological applications are mostly restricted to one of the enantiomers. In the past decade, macrocyclic antibiotics have proved to be an exceptionally useful class of chiral selectors for the separation of enantiomers of biological and pharmacological importance by means of high-performance liquid chromatography (HPLC), thin-layer chromatography and electrophoresis. The glycopeptides avoparcin, teicoplanin, ristocetin A and vancomycin have been extensively used as chiral selectors in the form of chiral bonded phases in HPLC, and HPLC stationary phases based on these glycopeptides have been commercialized. In fact, the macrocyclic glycopeptides are to some extent complementary to one another: where partial enantioresolution is obtained with one glycopeptide, there is a high probability that baseline or better separation can be obtained with another. This review sets out to characterize the physicochemical properties of these macrocyclic glycopeptide antibiotics and, through their application, endeavors to demonstrate the mechanism of separation on macrocyclic glycopeptides. The sequence of elution of the stereoisomers and the relation to the absolute configuration are also discussed.
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Affiliation(s)
- István Ilisz
- Department of Inorganic and Analytical Chemistry, University of Szeged, Dóm tér 7, H-6720 Szeged, Hungary
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43
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Weng W, Zhan F, Fu J, Li T, Chen X, Huang X. Enantioseparation of Binaphthol and Its Derivatives on Cellulose Tris(3,5-dimethylphenyl carbamate). Chromatographia 2007. [DOI: 10.1365/s10337-007-0456-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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44
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Ilisz I, Berkecz R, Péter A. HPLC separation of amino acid enantiomers and small peptides on macrocyclic antibiotic-based chiral stationary phases: a review. J Sep Sci 2007; 29:1305-21. [PMID: 16894775 DOI: 10.1002/jssc.200600046] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The search for new and effective chiral selectors capable of separating a wide variety of enantiomeric compounds is an ongoing process. In the past decade, macrocyclic antibiotics have proved to be an exceptionally useful class of chiral selectors for the separation of enantiomers of biological and pharmacological importance by means of HPLC, TLC and electrophoresis. More chiral analytes have been resolved through the use of glycopeptides than with all the other macrocyclic antibiotics combined (ansamycins, thiostrepton, aminoglycosides, etc.). The glycopeptides avoparcin, teicoplanin, ristocetin A and vancomycin have been extensively used as chiral selectors in the form of chiral bonded phases in HPLC, and HPLC stationary phases based on these glycopeptides have been commercialized. Teicoplanin, vancomycin, their analogs and ristocetin A seem to be the most useful glycopeptide HPLC bonded phases for the enantioseparation of proteins and unusal native and derivatized amino acids. In fact, the macrocyclic glycopeptides are to some extent complementary to one another: where partial enantioresolution is obtained with one glycopeptide, there is a high probability that baseline or better separation can be obtained with another. This review sets out to characterize the physicochemical properties of these antibiotics and their application in the enantioseparations of amino acids. The mechanism of separation, the sequence of elution of the stereoisomers and the relation to the absolute configuration are also discussed.
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Affiliation(s)
- István Ilisz
- Department of Inorganic and Analytical Chemistry, University of Szeged, Hungary
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45
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Bechtold M, Felinger A, Held M, Panke S. Adsorption behavior of a teicoplanin aglycone bonded stationary phase under harsh overload conditions. J Chromatogr A 2007; 1154:277-86. [PMID: 17449046 DOI: 10.1016/j.chroma.2007.03.103] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2006] [Revised: 03/27/2007] [Accepted: 03/28/2007] [Indexed: 11/17/2022]
Abstract
Silica-bonded teicoplanin aglycone allows enantioseparation of amino acids by reversed-phase liquid chromatography with a low organic solvent content. However, a reversible change in the adsorption behavior leading to a retention time shift (RTS) was observed when a preparative scale column was treated with harsh preparative chromatography-like conditions between finite-injection HPLC runs conducted under exactly the same conditions. This behavior was observed for all five investigated aliphatic and aromatic amino acids. In all cases, the retention times were prolonged after the overload conditions and the RTS was more pronounced for the later eluting d-enantiomer. We defined a standardized method for measuring the RTS and performed a systematic investigation on the influence of experimental conditions (type and concentration of pH modifier and organic modifier, temperature, pH) on the RTS. In this way a solvent composition--90/10 50 mM NH4Ac pH 5.8/MeOH--was identified that yielded no observable shift in retention time after overload conditions for both enantiomers. In order to treat the observed phenomenon on a mechanistic level, we applied band profile analysis based on the stochastic theory of chromatography and identified two different enantioselective sites. When the band profile analysis was performed on elution profiles obtained from runs with prolonged retention time after harsh overload conditions, the retention time shift could be attributed to both differentiable types of adsorption sites. One site was found to make both, enantioselective and non-selective contributions.
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Affiliation(s)
- Matthias Bechtold
- Bioprocess Laboratory, Institute of Process Engineering, ETH Zurich, Switzerland
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46
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Xiao TL, Zhang B, Lee JT, Hui F, Armstrong DW. REVERSAL OF ENANTIOMERIC ELUTION ORDER ON MACROCYCLIC GLYCOPEPTIDE CHIRAL STATIONARY PHASES. J LIQ CHROMATOGR R T 2007. [DOI: 10.1081/jlc-100106094] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- T. L. Xiao
- a Department of Chemistry , Iowa State University , Ames, IA, 50011, U.S.A
| | - B. Zhang
- a Department of Chemistry , Iowa State University , Ames, IA, 50011, U.S.A
| | - J. T. Lee
- b Advanced Separation Technologies, Inc. , Whippany, NJ, 07981, U.S.A
| | - F. Hui
- c Laboratoire Environment et Chimie Analytique , CNRS ERS657, ESPCI, Paris, 75005, France
| | - D. W. Armstrong
- d Department of Chemistry , Iowa State University , Ames, IA, 50011, U.S.A
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Meričko D, Lehotay J, Skačáni I, Armstrong DW. Effect of Temperature on Retention and Enantiomeric Separation of Chiral Sulfoxides using Teicoplanin Aglycone Chiral Stationary Phase. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070500509116] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- D. Meričko
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Bratislava, Slovak Republic
| | - J. Lehotay
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Bratislava, Slovak Republic
| | - I. Skačáni
- a Department of Analytical Chemistry, Faculty of Chemical and Food Technology , Slovak University of Technology , Bratislava, Slovak Republic
| | - D. W. Armstrong
- b Department of Chemistry, Gilman Hall , Iowa State University , Ames, Iowa, USA
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Zabka M, Rodrigues AE. Thermodynamic and Kinetic Study of Adsorption of R,S‐α‐Tetralol Enantiomers on the Chiral Adsorbent CHIRALPAK AD. SEP SCI TECHNOL 2007. [DOI: 10.1080/01496390601120706] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xu Z, Ding Z, Xu X, Xie X. Enantioseparation of 2-aryl-1,3-dicarbonyl analogues by high performance liquid chromatography using polysaccharide type chiral stationary phase. Chirality 2007; 20:147-50. [DOI: 10.1002/chir.20513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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