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Derazshamshir A, Göktürk I, Yılmaz F, Denizli A. S-citalopram imprinted monolithic columns for capillary electrochromatography enantioseparations. Electrophoresis 2021; 42:2672-2682. [PMID: 34406668 DOI: 10.1002/elps.202100222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/01/2021] [Accepted: 08/16/2021] [Indexed: 11/08/2022]
Abstract
In this study, the molecular imprinting method was used to separate enantiomeric forms of chiral antidepressant drug, R,S-citalopram (R,S-CIT) in aqueous solution by CEC system combining the advantages of capillary electrophoresis (CE) and high-performance liquid chromatography (HPLC). For that, an amino acid-based molecularly imprinted monolithic capillary column was designed and used as a stationary phase for selective separation of S-citalopram (S-CIT) for the first time. S-CIT was selectively separated from the aqueous solution containing the other enantiomeric form of R-CIT, which is the same in size and shape as the template molecule. Morphology of the molecularly imprinted (MIP S-CIT) and non-imprinted (NIP S-CIT) monolithic capillary columns was observed by scanning electron microscopy. Imprinting efficiency of MIP S-CIT monolithic capillary column used for selective S-CIT separation was verified by comparing with NIP S-CIT and calculated imprinting factor (I.F:1.81) proved the high selectivity of the MIP S-CIT for S-CIT. Cavities formed for S-CIT form enabled selective (α = 2.08) separation of the target molecule from the other enantiomeric R-CIT form. Separation was achieved in a short period of 10 min, with the electrophoretic mobility of 7.68 × 10-6 m2 /Vs for R,S-CIT at pH 7.0 10 mM PB and 50% ACN ratio. The performance of both MIP S-CIT and NIP S-CIT columns was estimated by repeating the R,S-CIT separations with intra-batch and inter-batch studies for reproducibility of retention times of R,S-CITs. Estimated RSD values that are lower than 2% suggest that the monolithic columns separate R,S-CIT enantiomers without losing separation efficiency.
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Affiliation(s)
| | - Ilgım Göktürk
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Fatma Yılmaz
- Chemistry Technology Division, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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2
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Shu S, Zhao L, Zhou S, Wu C, Liu H, Wang J. Recyclable and Stable α-Methylproline-Derived Chiral Ligands for the Chemical Dynamic Kinetic Resolution of free C,N-Unprotected α-Amino Acids. Molecules 2019; 24:E2218. [PMID: 31200582 PMCID: PMC6630268 DOI: 10.3390/molecules24122218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/06/2019] [Accepted: 06/06/2019] [Indexed: 11/16/2022] Open
Abstract
A novel special designed, stable, and recyclable chiral ligand bearing a quaternary carbon was developed for chemical dynamic kinetic resolution (DKR) of free C,N-unprotected racemic α-amino acids via Schiff base intermediates. This method furnishes high yields with excellent enantioselectivity, has a broad substrate scope, and uses operationally simple and convenient conditions. The present chemical DKR is a practical and useful method for the preparation of enantiopure α-amino acids.
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Affiliation(s)
- Shuangjie Shu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.
| | - Liang Zhao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.
| | - Shengbin Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zu Chong Zhi Road, Shanghai 201203, China.
| | - Chenglin Wu
- These authors contributed equally to this work..
| | - Hong Liu
- These authors contributed equally to this work..
| | - Jiang Wang
- These authors contributed equally to this work..
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3
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Ianni F, Pucciarini L, Carotti A, Natalini S, Raskildina GZ, Sardella R, Natalini B. Last ten years (2008-2018) of chiral ligand-exchange chromatography in HPLC: An updated review. J Sep Sci 2018; 42:21-37. [DOI: 10.1002/jssc.201800724] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/21/2018] [Accepted: 08/22/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Federica Ianni
- Department of Pharmaceutical Sciences; Section of Chemistry and Technology of Drugs; University of Perugia; Perugia Italy
| | - Lucia Pucciarini
- Department of Pharmaceutical Sciences; Section of Chemistry and Technology of Drugs; University of Perugia; Perugia Italy
| | - Andrea Carotti
- Department of Pharmaceutical Sciences; Section of Chemistry and Technology of Drugs; University of Perugia; Perugia Italy
| | - Serena Natalini
- Department of Pharmaceutical Care; S. Giovanni Battista Hospital of Foligno; Foligno Italy
| | | | - Roccaldo Sardella
- Department of Pharmaceutical Sciences; Section of Chemistry and Technology of Drugs; University of Perugia; Perugia Italy
| | - Benedetto Natalini
- Department of Pharmaceutical Sciences; Section of Chemistry and Technology of Drugs; University of Perugia; Perugia Italy
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Separation and determination of cinchona alkaloids by ligand-exchange capillary electrophoresis using a Cu(II)–l-lysine complex as selector. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1345-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Yu Y, Tao Y, Yang B, Wu D, Qin Y, Kong Y. Smart Chiral Sensing Platform with Alterable Enantioselectivity. Anal Chem 2017; 89:12930-12937. [DOI: 10.1021/acs.analchem.7b03783] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Yin Yu
- Advanced Catalysis and Green Manufacturing
Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Yongxin Tao
- Advanced Catalysis and Green Manufacturing
Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Baozhu Yang
- Advanced Catalysis and Green Manufacturing
Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Datong Wu
- Advanced Catalysis and Green Manufacturing
Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Yong Qin
- Advanced Catalysis and Green Manufacturing
Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
| | - Yong Kong
- Advanced Catalysis and Green Manufacturing
Collaborative Innovation Center, Changzhou University, Changzhou 213164, China
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7
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Daria D, Liudmila K, Gennady E. Highly fluorinated polymers with sulfonate, sulfamide and N
,N
-diethylamino groups for the capillary electromigration separation of proteins and steroid hormones. J Sep Sci 2017; 40:3335-3342. [DOI: 10.1002/jssc.201700283] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 01/10/2023]
Affiliation(s)
- Dzema Daria
- Saint Petersburg State University; Institute of chemistry; Saint Petersburg Russia
| | - Kartsova Liudmila
- Saint Petersburg State University; Institute of chemistry; Saint Petersburg Russia
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Echevarría RN, Franca CA, Tascon M, Castells CB, Keunchkarian S. Chiral ligand-exchange chromatography with Cinchona alkaloids. Exploring experimental conditions for enantioseparation of α-amino acids. Microchem J 2016. [DOI: 10.1016/j.microc.2016.06.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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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: 220] [Impact Index Per Article: 27.5] [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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Zhao W, Li Y, Zhang Y, Zhang H, Yu H, Chen A. Determination of Cinchona Alkaloids by Capillary Electrophoresis with Novel Complex Formation. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1089258] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Liang X, Zhao L, Deng M, Liu L, Ma Y, Guo X. Separation of Ofloxacin and Its Six Related Substances Enantiomers by Chiral Ligand-Exchange Chromatography. Chirality 2015; 27:843-9. [DOI: 10.1002/chir.22527] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 08/06/2015] [Accepted: 08/17/2015] [Indexed: 01/10/2023]
Affiliation(s)
- Xinlei Liang
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province P.R. China
| | - Longshan Zhao
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province P.R. China
| | - Miaoduo Deng
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province P.R. China
| | - Lijie Liu
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province P.R. China
| | - Yongfu Ma
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province P.R. China
| | - Xingjie Guo
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province P.R. China
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Todoroki K, Nakano T, Watanabe H, Min JZ, Inoue K, Ishikawa Y, Toyo'oka T. Computational prediction of diastereomeric separation behavior of fluorescent o-phthalaldehyde derivatives of amino acids. ANAL SCI 2015; 30:865-70. [PMID: 25213814 DOI: 10.2116/analsci.30.865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We have developed a convenient method for predicting the LC resolution of amino acid diastereomers through computational calculations. For acquiring experimental data, we derivatized 10 amino acids using o-phthalaldehyde and N-acetyl-L-cysteine as fluorogenic diastereomer-forming reagents and analyzed the diastereomers using reversed-phase LC and fluorescence detection. For theoretical chemical calculations, we used the publicly available semi-empirical calculation software MOPAC2012. Using the obtained experimental and theoretical data, we determined the change in analytical resolution with differences in the structure of the diastereomers. From the results obtained, we concluded that greater conformational change through diastereomeric derivatization induced an increase in the contact area with the stationary phase, leading to higher resolution.
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Affiliation(s)
- Kenichiro Todoroki
- Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences, University of Shizuoka
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Yilmazer ND, Korth M. Enhanced semiempirical QM methods for biomolecular interactions. Comput Struct Biotechnol J 2015; 13:169-75. [PMID: 25848495 PMCID: PMC4372622 DOI: 10.1016/j.csbj.2015.02.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 02/17/2015] [Accepted: 02/19/2015] [Indexed: 12/21/2022] Open
Abstract
Recent successes and failures of the application of 'enhanced' semiempirical QM (SQM) methods are reviewed in the light of the benefits and backdraws of adding dispersion (D) and hydrogen-bond (H) correction terms. We find that the accuracy of SQM-DH methods for non-covalent interactions is very often reported to be comparable to dispersion-corrected density functional theory (DFT-D), while computation times are about three orders of magnitude lower. SQM-DH methods thus open up a possibility to simulate realistically large model systems for problems both in life and materials science with comparably high accuracy.
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Affiliation(s)
| | - Martin Korth
- Institute of Theoretical Chemistry, Ulm University, D-89069 Ulm, Germany
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Jia DX, Ai ZG, Xue YP, Zheng YG. Chiral ligand-exchange high-performance liquid chromatography with copper (II)-L-phenylalanine complexes for separation of 3,4-dimethoxy-α-methylphenylalanine racemes. Anal Bioanal Chem 2014; 406:7687-94. [DOI: 10.1007/s00216-014-8117-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 08/13/2014] [Accepted: 08/15/2014] [Indexed: 11/25/2022]
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