1
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Handlovic TT, Wahab MF, Cole HD, Alatrash N, Ramasamy E, MacDonnell FM, McFarland SA, Armstrong DW. Insights into enantioselective separations of ionic metal complexes by sub/supercritical fluid chromatography. Anal Chim Acta 2022; 1228:340156. [PMID: 36126998 PMCID: PMC9504283 DOI: 10.1016/j.aca.2022.340156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/29/2022] [Accepted: 07/07/2022] [Indexed: 11/25/2022]
Abstract
Sub/supercritical fluid chromatography (SFC) is a green separation technique that has been used to separate a wide variety of compounds and is proven to be immensely useful for chiral separations. However, SFC is currently not thought to be applicable for ionic compounds due to their low solubility in CO2, even with additives and organic modifiers. Recently, a large amount of research has been centered on octahedral complexes of Ru(II) and Os(II) with bidentate polypyridyl ligands due to their ability to serve in cancer treatment and other biological activities. These compounds exist as the delta (Δ) and lambda (Λ) enantiomers. Previously, similar compounds have been enantiomerically separated using HPLC and capillary electrophoresis, but never with SFC. Cyclofructan-6 (CF6) derivatized with (R)-naphthyl ethyl (RN) groups has been proven to be an effective chiral stationary phase for these separations in HPLC. This column chemistry was expanded to SFC to provide the first chiral separation of a wide variety (23 complexes in total) of ionic octahedral polypyridyl complexes. Unexpected behavior for mixing methanol and acetonitrile as the organic modifier will be discussed, along with the effects of additives. Enantioselectivity on CF6-RN chemistry is shown to be dependent on the conjugation level and rigidity of the metal complexes. Mass transfer kinetic behavior is also shown, and high-efficiency baseline resolved rapid separations are shown for fast screening or quantitation of representative coordination complexes.
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Affiliation(s)
- Troy T Handlovic
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 76019, USA
| | - M Farooq Wahab
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 76019, USA
| | - Houston D Cole
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 76019, USA
| | - Nagham Alatrash
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 76019, USA
| | - Elamparuthi Ramasamy
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 76019, USA
| | | | - Sherri A McFarland
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 76019, USA
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 76019, USA.
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2
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Saleh B, Ding T, Wang Y, Zheng X, Liu R, He L. Analytical Separation of Closantel Enantiomers by HPLC. Molecules 2021; 26:molecules26237288. [PMID: 34885866 PMCID: PMC8659055 DOI: 10.3390/molecules26237288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/10/2021] [Accepted: 11/12/2021] [Indexed: 11/30/2022] Open
Abstract
Closantel is an antiparasitic drug marketed in a racemic form with one chiral center. It is meaningful to develop a method for separating and analyzing the closantel enantiomers. In this work, two enantiomeric separation methods of closantel were explored by normal-phase high-performance liquid chromatography. The influences of the chiral stationary phase (CSP) structure, the mobile phase composition, the nature and proportion of different mobile phase modifiers (alcohols and acids), and the column temperature on the enantiomeric separation of closantel were investigated in detail. The two enantiomers were successfully separated on the novel CSP of isopropyl derivatives of cyclofructan 6 and n-hexane-isopropanol-trifluoroacetic acid (97:3:0.1, v/v/v) as a mobile phase with a resolution (Rs) of about 2.48. The enantiomers were also well separated on the CSP of tris-carbamates of amylose with a higher Rs (about 3.79) when a mixture of n-hexane-isopropanol-trifluoroacetic acid (55:45:0.1, v/v/v) was used as mobile phase. Thus, the proposed separation methods can facilitate molecular pharmacological and biological research on closantel and its enantiomers.
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Affiliation(s)
- Basma Saleh
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (B.S.); (T.D.); (X.Z.)
- Directorate of Veterinary Medicine, General Organization of Veterinary Services, Ministry of Agriculture, Port Said 42511, Egypt
| | - Tongyan Ding
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (B.S.); (T.D.); (X.Z.)
| | - Yuwei Wang
- Quality Supervision, Inspection and Testing Center for Domestic Animal Products Guangzhou, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China; (Y.W.); (R.L.)
| | - Xiantong Zheng
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (B.S.); (T.D.); (X.Z.)
| | - Rong Liu
- Quality Supervision, Inspection and Testing Center for Domestic Animal Products Guangzhou, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China; (Y.W.); (R.L.)
| | - Limin He
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China; (B.S.); (T.D.); (X.Z.)
- Quality Supervision, Inspection and Testing Center for Domestic Animal Products Guangzhou, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China; (Y.W.); (R.L.)
- Correspondence: ; Tel.: +86-20-85280237; Fax: +86-20-85284896
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Aboul-Enein HY, Kannappan V, Kanthiah S. Impact of cyclofructan derivatives as efficient chiral selector in chiral analysis: An overview. Chirality 2021; 34:364-373. [PMID: 34806232 DOI: 10.1002/chir.23396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/21/2021] [Accepted: 11/01/2021] [Indexed: 01/12/2023]
Abstract
The development of chiral selectors for the separation and analysis of chiral molecules has been an evolving process happening over three decades, since the introduction of the first chiral stationary phase (CSP) in 1938. The main impetus for designing new chiral selectors is to get to most promising one which has a broad chiral recognition property, separation capability for a wide range of chiral analytes, and the cost-effective CSP, which is also a major concern. Today, we have more than 100 commercially available CSPs, and these are prepared by coating or immobilizing the classical chiral selectors on to the chromatographic support, normally, silica gel. The purpose of this review is to look at progress and the impact of cyclofructan derivatives, a novel chiral selector introduced recently, for performing chiral analysis.
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Affiliation(s)
- Hassan Y Aboul-Enein
- Pharmaceutical and Medicinal Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Center, Cairo, Egypt
| | | | - Selvakumar Kanthiah
- Department of Quality Assurance, Acharya & BM Reddy College of Pharmacy, Bengaluru, India
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4
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Kozlov O, Kadlecová Z, Tesařová E, Kalíková K. Evaluation of separation properties of stationary phases in supercritical fluid chromatography; deazapurine nucleosides case study. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104137] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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5
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Hirose T, Keck D, Izumi Y, Bamba T. Comparison of Retention Behavior between Supercritical Fluid Chromatography and Normal-Phase High-Performance Liquid Chromatography with Various Stationary Phases. Molecules 2019; 24:molecules24132425. [PMID: 31269632 PMCID: PMC6650800 DOI: 10.3390/molecules24132425] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 06/28/2019] [Accepted: 07/01/2019] [Indexed: 02/06/2023] Open
Abstract
The retention behavior of a wide variety of stationary phases was compared in supercritical fluid chromatography (SFC) and normal-phase high-performance liquid chromatography (NP-HPLC). We also attempted to elucidate the retention behavior in SFC by investigating the selectivity of the different stationary phases. SFC separation conditions with polar stationary phases, such as silica gel (SL) and diol (Diol) phases, operate via adsorptions that include hydrophilic and ionic interactions similar to those in NP-HPLC. Moreover, non-polar stationary phases, such as pentabromophenyl (PBr), pyrenylethyl (PYE), and octadecyl (C18), could be used despite the non-polar mobile phase conditions, because the dispersion and π-π interactions were stronger in SFC than in HPLC. These results reflect the selectivity of the stationary phase and its retention factor, thus providing useful information for the selection of appropriate stationary phases for particular analytes.
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Affiliation(s)
- Tsunehisa Hirose
- Nacalai Tesque, Inc., Ishibashi 617-0004 17, Kaide-cho, Muko-shi, Kyoto, Japan.
| | - Daniel Keck
- Nacalai Tesque, Inc., Ishibashi 617-0004 17, Kaide-cho, Muko-shi, Kyoto, Japan
| | - Yoshihiro Izumi
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, Maidashi 812-8582 3-1-1, Higashi-ku, Fukuoka, Japan
| | - Takeshi Bamba
- Division of Metabolomics, Medical Institute of Bioregulation, Kyushu University, Maidashi 812-8582 3-1-1, Higashi-ku, Fukuoka, Japan
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6
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Abstract
Cyclofructans are cyclic oligosaccharides made of β-2,1-linked fructofuranose units. They have been utilized as chiral selectors, usually after derivatization, with high-performance liquid chromatography (HPLC), gas chromatography (GC), capillary electrophoresis (CE), and supercritical fluid chromatography (SFC). The focus herein will be directed to their development and applications as chiral selectors in various chiral separation techniques. Discussion of their use in hydrophilic liquid interaction chromatography (HILIC) will be limited. Their use in liquid chromatography, especially their improvements with the use of superficially porous particles (SPPs) will be emphasized. Method parameters and future directions are also discussed.
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Xie SM, Yuan LM. Recent development trends for chiral stationary phases based on chitosan derivatives, cyclofructan derivatives and chiral porous materials in high performance liquid chromatography. J Sep Sci 2018; 42:6-20. [PMID: 30152091 DOI: 10.1002/jssc.201800656] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 08/20/2018] [Accepted: 08/20/2018] [Indexed: 11/06/2022]
Abstract
The separation of enantiomers by chromatographic methods, such as gas chromatography, high-performance liquid chromatography and capillary electrochromatography, has become an increasingly significant challenge over the past few decades due to the demand of pharmaceutical, agrochemical, and food analysis. Among these chromatographic resolution methods, high-performance liquid chromatography based on chiral stationary phases has become the most popular and effective method used for the analytical and preparative separation of optically active compounds. This review mainly focuses on the recent development trends for novel chiral stationary phases based on chitosan derivatives, cyclofructan derivatives, and chiral porous materials that include metal-organic frameworks and covalent organic frameworks in high-performance liquid chromatography. The enantioseparation performance and chiral recognition mechanisms of these newly developed chiral selectors toward enantiomers are discussed in detail.
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Affiliation(s)
- Sheng-Ming Xie
- Department of Chemistry, Yunnan Normal University, Kunming, P. R. China
| | - Li-Ming Yuan
- Department of Chemistry, Yunnan Normal University, Kunming, P. R. China
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Recent Achievements and Future Challenges in Supercritical Fluid Chromatography for the Enantioselective Separation of Chiral Pharmaceuticals. Chromatographia 2018. [DOI: 10.1007/s10337-018-3606-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Peluso P, Mamane V, Aubert E, Cossu S. Recent trends and applications in liquid-phase chromatography enantioseparation of atropisomers. Electrophoresis 2017; 38:1830-1850. [DOI: 10.1002/elps.201600502] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 01/24/2017] [Accepted: 02/01/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Paola Peluso
- Istituto di Chimica Biomolecolare ICB CNR - Sede Secondaria di Sassari; Sassari Italy
| | - Victor Mamane
- Institut de Chimie de Strasbourg; UMR CNRS; Strasbourg Cedex France
| | - Emmanuel Aubert
- Cristallographie, Résonance Magnétique et Modélisations (CRM ), UMR CNRS; Université de Lorraine; Vandoeuvre-les-Nancy France
| | - Sergio Cossu
- Dipartimento di Scienze Molecolari e Nanosistemi; Università Ca’ Foscari di Venezia; Mestre Venezia Italy
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Moskaľová M, Kozlov O, Gondová T, Budovská M, Armstrong DW. HPLC Enantioseparation of Novel Spirobrassinin Analogs on the Cyclofructan Chiral Stationary Phases. Chromatographia 2016. [DOI: 10.1007/s10337-016-3212-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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11
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Xie SM, Yuan LM. Recent progress of chiral stationary phases for separation of enantiomers in gas chromatography. J Sep Sci 2016; 40:124-137. [DOI: 10.1002/jssc.201600808] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/20/2016] [Accepted: 08/21/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Sheng-Ming Xie
- Department of Chemistry; Yunnan Normal University; Kunming P. R. China
| | - Li-Ming Yuan
- Department of Chemistry; Yunnan Normal University; Kunming P. R. China
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12
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Moskaľová M, Petrovaj J, Gondová T, Budovská M, Armstrong DW. Enantiomeric separation of new phytoalexin analogs with cyclofructan chiral stationary phases in normal-phase mode. J Sep Sci 2016; 39:3669-3676. [PMID: 27484485 DOI: 10.1002/jssc.201600739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 07/25/2016] [Accepted: 07/25/2016] [Indexed: 11/07/2022]
Abstract
For the first time, three different derivatized cyclofructan chiral stationary phases were used for the direct high-performance liquid chromatographic enantiomeric separation of 11 new racemic analogs of a natural indole phytoalexin. This class of compounds is known to have significant antiproliferative activity and other potentially useful pharmacological properties. The effect of various experimental factors was investigated to optimize the separations in the normal-phase mode. It was found that the nature of polar modifier and additive in the mobile phase have significant impact on the enantioseparations. Better chiral recognition of analyzed compounds was achieved on (R)-naphthylethyl carbamate cyclofructan 6 than on isopropyl carbamate cyclofructan 6 and dimethylphenyl carbamate cyclofructan 7. The thermodynamic parameters showed that the chiral separation was enthalpy controlled in all cases.
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Affiliation(s)
- Marianna Moskaľová
- Department of Analytical Chemistry, Faculty of Science, P.J. Šafárik University, Košice, Slovak Republic
| | - Ján Petrovaj
- Department of Analytical Chemistry, Faculty of Science, P.J. Šafárik University, Košice, Slovak Republic
| | - Taťána Gondová
- Department of Analytical Chemistry, Faculty of Science, P.J. Šafárik University, Košice, Slovak Republic.
| | - Mariana Budovská
- Department of Organic Chemistry, Faculty of Science, P.J. Šafárik University, Košice, Slovak Republic
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, University of Texas at Arlington, Arlington, TX, USA
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13
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Scriba GKE. Chiral recognition in separation science - an update. J Chromatogr A 2016; 1467:56-78. [PMID: 27318504 DOI: 10.1016/j.chroma.2016.05.061] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 05/17/2016] [Accepted: 05/19/2016] [Indexed: 12/26/2022]
Abstract
Stereospecific recognition of chiral molecules is an important issue in various aspects of life sciences and chemistry including analytical separation sciences. The basis of analytical enantioseparations is the formation of transient diastereomeric complexes driven by hydrogen bonds or ionic, ion-dipole, dipole-dipole, van der Waals as well as π-π interactions. Recently, halogen bonding was also described to contribute to selector-selectand complexation. Besides structure-separation relationships, spectroscopic techniques, especially NMR spectroscopy, as well as X-ray crystallography have contributed to the understanding of the structure of the diastereomeric complexes. Molecular modeling has provided the tool for the visualization of the structures. The present review highlights recent contributions to the understanding of the binding mechanism between chiral selectors and selectands in analytical enantioseparations dating between 2012 and early 2016 including polysaccharide derivatives, cyclodextrins, cyclofructans, macrocyclic glycopeptides, proteins, brush-type selectors, ion-exchangers, polymers, crown ethers, ligand-exchangers, molecular micelles, ionic liquids, metal-organic frameworks and nucleotide-derived selectors. A systematic compilation of all published literature on the various chiral selectors has not been attempted.
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Affiliation(s)
- Gerhard K E Scriba
- Friedrich Schiller University Jena, Department of Pharmaceutical/Medicinal Chemistry, Philosophenweg 14, 07743 Jena, Germany.
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14
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Leopold H, Tronnier A, Wagenblast G, Münster I, Strassner T. Photoluminescence of a New Material: Cyclometalated C∧C* Thiazole-2-ylidene Platinum(II) Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b00991] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hendrik Leopold
- Physikalische
Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
| | - Alexander Tronnier
- Physikalische
Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
| | | | | | - Thomas Strassner
- Physikalische
Organische Chemie, Technische Universität Dresden, 01069 Dresden, Germany
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15
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Přibylka A, Švidrnoch M, Tesařová E, Armstrong DW, Maier V. The empirical comparison of cyclofructans and cyclodextrins as chiral selectors in capillary electrophoretic separation of atropisomers ofR,S-1,1’-binaphthalene-2,2’-diyl hydrogen phosphate. J Sep Sci 2016; 39:973-9. [DOI: 10.1002/jssc.201501012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 11/26/2015] [Accepted: 12/02/2015] [Indexed: 01/20/2023]
Affiliation(s)
- Adam Přibylka
- Regional Centre of Advanced Technologies and Materials, Faculty of Science; Palacký University in Olomouc; Olomouc Czech Republic
| | - Martin Švidrnoch
- Regional Centre of Advanced Technologies and Materials, Faculty of Science; Palacký University in Olomouc; Olomouc Czech Republic
| | - Eva Tesařová
- Department of Physical and Macromolecular Chemistry, Faculty of Science; Charles University in Prague; Albertov 2030 Prague 2 Czech Republic
| | - Daniel W. Armstrong
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington TX USA
| | - Vítězslav Maier
- Regional Centre of Advanced Technologies and Materials, Faculty of Science; Palacký University in Olomouc; Olomouc Czech Republic
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16
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Lemasson E, Bertin S, West C. Use and practice of achiral and chiral supercritical fluid chromatography in pharmaceutical analysis and purification. J Sep Sci 2016; 39:212-33. [DOI: 10.1002/jssc.201501062] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 10/21/2015] [Accepted: 10/21/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Elise Lemasson
- Institut de Chimie Organique et Analytique (ICOA); Univ Orleans, CNRS; Orléans cedex France
| | | | - Caroline West
- Institut de Chimie Organique et Analytique (ICOA); Univ Orleans, CNRS; Orléans cedex France
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Sykora D, Vozka J, Tesarova E. Chromatographic methods enabling the characterization of stationary phases and retention prediction in high-performance liquid chromatography and supercritical fluid chromatography. J Sep Sci 2015; 39:115-31. [DOI: 10.1002/jssc.201501023] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 10/08/2015] [Accepted: 10/08/2015] [Indexed: 11/11/2022]
Affiliation(s)
- David Sykora
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
| | - Jiri Vozka
- Department of Analytical Chemistry; University of Chemistry and Technology; Prague Czech Republic
- Department of Physical and Macromolecular Chemistry, Faculty of Science; Charles University in Prague; Prague Czech Republic
| | - Eva Tesarova
- Department of Physical and Macromolecular Chemistry, Faculty of Science; Charles University in Prague; Prague Czech Republic
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18
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Spudeit DA, Breitbach ZS, Dolzan MD, Micke GA, Armstrong DW. Superficially Porous Particle Based Hydroxypropyl-β-cyclodextrin Stationary Phase for High-Efficiency Enantiomeric Separations. Chirality 2015; 27:788-94. [DOI: 10.1002/chir.22526] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 08/11/2015] [Accepted: 08/11/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel A. Spudeit
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis Brazil
| | - Zachary S. Breitbach
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
| | - Maressa D. Dolzan
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis Brazil
| | - Gustavo A. Micke
- Department of Chemistry; Federal University of Santa Catarina; Florianopolis Brazil
| | - Daniel W. Armstrong
- Department of Chemistry and Biochemistry; University of Texas at Arlington; Arlington Texas USA
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19
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Kalíková K, Geryk R, Vozka J, Tesařová E. Evaluation of differences between Chiralpak IA and Chiralpak AD-RH amylose-based chiral stationary phases in reversed-phase high-performance liquid chromatography. J Sep Sci 2015; 38:711-9. [DOI: 10.1002/jssc.201401002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 12/18/2014] [Accepted: 12/18/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Květa Kalíková
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Prague Czech Republic
| | - Radim Geryk
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Prague Czech Republic
| | - Jiří Vozka
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Prague Czech Republic
| | - Eva Tesařová
- Department of Physical and Macromolecular Chemistry; Faculty of Science; Charles University in Prague; Prague Czech Republic
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20
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Hu K, Deng Z, Wang B, Cui Y, Miao M, Liu W, Jiang Q, Zhao W, Huang Y, Zhang S. Development of a decaaza-cyclophane stationary phase for high-performance liquid chromatography. J Sep Sci 2014; 38:60-6. [DOI: 10.1002/jssc.201400836] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 10/06/2014] [Accepted: 10/10/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Kai Hu
- Henan University of Traditional Chinese Medicine; Zhengzhou P.R. China
| | - Zhifen Deng
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou P.R. China
| | - Bei Wang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou P.R. China
| | - Yongxia Cui
- Henan University of Traditional Chinese Medicine; Zhengzhou P.R. China
| | - Mingsan Miao
- Henan University of Traditional Chinese Medicine; Zhengzhou P.R. China
| | - Wei Liu
- Henan University of Traditional Chinese Medicine; Zhengzhou P.R. China
| | - Qiong Jiang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou P.R. China
| | - Wenjie Zhao
- School of Chemistry and Chemical Engineering; Henan University of Technology; Zhengzhou P.R. China
| | - Yanjie Huang
- Henan University of Traditional Chinese Medicine; Zhengzhou P.R. China
| | - Shusheng Zhang
- College of Chemistry and Molecular Engineering; Zhengzhou University; Zhengzhou P.R. China
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21
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Sievers-Engler A, Lindner W, Lämmerhofer M. Ligand–receptor binding increments in enantioselective liquid chromatography. J Chromatogr A 2014; 1363:79-88. [DOI: 10.1016/j.chroma.2014.04.077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/15/2014] [Accepted: 04/20/2014] [Indexed: 10/25/2022]
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Spudeit DA, Dolzan MD, Breitbach ZS, Barber WE, Micke GA, Armstrong DW. Superficially porous particles vs. fully porous particles for bonded high performance liquid chromatographic chiral stationary phases: isopropyl cyclofructan 6. J Chromatogr A 2014; 1363:89-95. [PMID: 25169726 DOI: 10.1016/j.chroma.2014.08.022] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 08/05/2014] [Accepted: 08/07/2014] [Indexed: 10/24/2022]
Abstract
This work reports a comparison of HPLC separations of enantiomers with chiral stationary phases (CSPs) prepared by chemically bonding cyclofructan-6, functionalized with isopropyl carbamate groups on fully and superficially porous particles (SPPs). The chromatographic performance of the superficially porous CSP based column was compared with columns packed with 5 μm and 3 μm fully porous particles (FPPs). At a flow rate of 3.0 mL/min the number of plates on column afforded by the SPP column was ∼7× greater than the number of plates on column (same length) obtained when using the 5 μm FPP based column. The flow rate providing the highest efficiency separation was ∼1.0 mL/min for the SPP column while it was ∼0.5 mL/min for both FPP columns. It was found that the selectivity and resolution of the separations were comparable between fully porous and superficially porous based columns (under constant mobile phase conditions), even though the SPP column contained lower absolute amounts of chiral selector. When tested under constant retention conditions, the SPP based CSP greatly improved resolution compared to the FPP based columns. At high flow rates the efficiency gained by using superficially porous CSP was accentuated. The advantages of columns based on SPPs become more obvious from the viewpoint of plate numbers and resolution per analysis time.
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Affiliation(s)
- Daniel A Spudeit
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA; Department of Chemistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Maressa D Dolzan
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA; Department of Chemistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Zachary S Breitbach
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA
| | - William E Barber
- Agilent Technologies Inc., 2850 Centerville Road, Wilmington, DE 19808, USA
| | - Gustavo A Micke
- Department of Chemistry, Federal University of Santa Catarina, Florianopolis, SC, Brazil
| | - Daniel W Armstrong
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA; AZYP LLC, 700 Planetarium Place, Arlington, TX 76019, USA.
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23
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Qiu H, Kiyono-Shimobe M, Armstrong DW. NATIVE/DERIVATIZED CYCLOFRUCTAN 6 BOUND TO RESINS VIA “CLICK” CHEMISTRY AS STATIONARY PHASES FOR ACHIRAL/CHIRAL SEPARATIONS. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2013.830271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Haixiao Qiu
- a Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas , USA
- b AZYP, LLC , Arlington , Texas , USA
| | | | - Daniel W. Armstrong
- a Department of Chemistry and Biochemistry , The University of Texas at Arlington , Arlington , Texas , USA
- b AZYP, LLC , Arlington , Texas , USA
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24
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Maier V, Kalíková K, Přibylka A, Vozka J, Smuts J, Švidrnoch M, Ševčík J, Armstrong DW, Tesařová E. Isopropyl derivative of cyclofructan 6 as chiral selector in liquid chromatography and capillary electrophoresis. J Chromatogr A 2014; 1338:197-200. [DOI: 10.1016/j.chroma.2014.02.061] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 02/18/2014] [Accepted: 02/19/2014] [Indexed: 10/25/2022]
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25
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Supercritical fluid chromatography as a tool for enantioselective separation; A review. Anal Chim Acta 2014; 821:1-33. [DOI: 10.1016/j.aca.2014.02.036] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/31/2014] [Accepted: 02/22/2014] [Indexed: 12/14/2022]
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26
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Smuts JP, Hao XQ, Han Z, Parpia C, Krische MJ, Armstrong DW. Enantiomeric Separations of Chiral Sulfonic and Phosphoric Acids with Barium-Doped Cyclofructan Selectors via an Ion Interaction Mechanism. Anal Chem 2013; 86:1282-90. [DOI: 10.1021/ac403686a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jonathan P. Smuts
- Department
of Chemistry and Biochemistry, University of Texas at Arlington, TX 76019, United States
| | - Xin-Qi Hao
- Department
of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712, United States
- College
of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450052, P. R. China
| | - Zhaobin Han
- Department
of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Curran Parpia
- Department
of Chemistry and Biochemistry, University of Texas at Arlington, TX 76019, United States
| | - Michael J. Krische
- Department
of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Daniel W. Armstrong
- Department
of Chemistry and Biochemistry, University of Texas at Arlington, TX 76019, United States
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27
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Hamman C, Wong M, Aliagas I, Ortwine DF, Pease J, Schmidt DE, Victorino J. The evaluation of 25 chiral stationary phases and the utilization of sub-2.0μm coated polysaccharide chiral stationary phases via supercritical fluid chromatography. J Chromatogr A 2013; 1305:310-9. [DOI: 10.1016/j.chroma.2013.07.046] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 07/10/2013] [Accepted: 07/10/2013] [Indexed: 10/26/2022]
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