1
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Jafar-Nezhad Ivrigh Z, Fahimi-Kashani N, Morad R, Jamshidi Z, Hormozi-Nezhad MR. Toward visual chiral recognition of amino acids using a wide-range color tonality ratiometric nanoprobe. Anal Chim Acta 2022; 1231:340386. [DOI: 10.1016/j.aca.2022.340386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/26/2022] [Accepted: 09/08/2022] [Indexed: 11/01/2022]
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2
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Peluso P, Chankvetadze B. Recognition in the Domain of Molecular Chirality: From Noncovalent Interactions to Separation of Enantiomers. Chem Rev 2022; 122:13235-13400. [PMID: 35917234 DOI: 10.1021/acs.chemrev.1c00846] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
It is not a coincidence that both chirality and noncovalent interactions are ubiquitous in nature and synthetic molecular systems. Noncovalent interactivity between chiral molecules underlies enantioselective recognition as a fundamental phenomenon regulating life and human activities. Thus, noncovalent interactions represent the narrative thread of a fascinating story which goes across several disciplines of medical, chemical, physical, biological, and other natural sciences. This review has been conceived with the awareness that a modern attitude toward molecular chirality and its consequences needs to be founded on multidisciplinary approaches to disclose the molecular basis of essential enantioselective phenomena in the domain of chemical, physical, and life sciences. With the primary aim of discussing this topic in an integrated way, a comprehensive pool of rational and systematic multidisciplinary information is provided, which concerns the fundamentals of chirality, a description of noncovalent interactions, and their implications in enantioselective processes occurring in different contexts. A specific focus is devoted to enantioselection in chromatography and electromigration techniques because of their unique feature as "multistep" processes. A second motivation for writing this review is to make a clear statement about the state of the art, the tools we have at our disposal, and what is still missing to fully understand the mechanisms underlying enantioselective recognition.
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Affiliation(s)
- Paola Peluso
- Istituto di Chimica Biomolecolare ICB, CNR, Sede secondaria di Sassari, Traversa La Crucca 3, Regione Baldinca, Li Punti, I-07100 Sassari, Italy
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Chavchavadze Avenue 3, 0179 Tbilisi, Georgia
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3
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Peluso P, Chankvetadze B. Native and substituted cyclodextrins as chiral selectors for capillary electrophoresis enantioseparations: Structures, features, application, and molecular modeling. Electrophoresis 2021; 42:1676-1708. [PMID: 33956995 DOI: 10.1002/elps.202100053] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 02/06/2023]
Abstract
CDs are cyclic oligosaccharides consisting of α-d-glucopyranosyl units linked through 1,4-linkages, which are obtained from enzymatic degradation of starch. The coexistence of hydrophilic and hydrophobic regions in the same structure makes these macrocycles extremely versatile as complexing host with application in food, cosmetics, environmental, agriculture, textile, pharmaceutical, and chemical industries. Due to their inherent chirality, CDs have been also successfully used as chiral selectors in enantioseparation science, in particular, for CE enantioseparations. In the last decades, multidisciplinary approaches based on CE, NMR spectroscopy, X-ray crystallography, microcalorimetry, and molecular modeling have shed light on some aspects of recognition mechanisms underlying enantiodiscrimination. With the ever growing improvement of computer facilities, hardware and software, computational techniques have become a useful tool to model at molecular level the dynamics of diastereomeric associate formation to sample low-energy conformations, the binding energies between the enantiomer and the CD, and to profile noncovalent interactions contributing to the stability of CD/enantiomer association. On this basis, the aim of this review is to provide the reader with a critical overview on the applications of CDs in CE. In particular, the contemporary theory of the electrophoretic technique and the main structural features of CDs are described, with a specific focus on techniques, methods, and approaches to model CE enantioseparations promoted by native and substituted CDs. A systematic compilation of all published literature has not been attempted.
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Affiliation(s)
- Paola Peluso
- Istituto di Chimica Biomolecolare ICB, CNR, Sede secondaria di Sassari, Traversa La Crucca 3, Li Punti, Sassari, Italy
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Tbilisi, Georgia
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4
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Ma X, Li J, Li X, Feng Z, Yang X, Liu J, Du Y. L-Histidinium Chiral Ionic Liquid Functionalized β-Cyclodextrin as Chiral Selector in Capillary Electrophoresis. J Chromatogr Sci 2021; 59:388-395. [PMID: 33479764 DOI: 10.1093/chromsci/bmaa115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 10/17/2020] [Accepted: 11/06/2020] [Indexed: 11/14/2022]
Abstract
Nowadays, ionic liquids (ILs) functionalized cyclodextrins (CDs) have drawn increasing attention in chiral separation. Herein, a novel β-CD derivative functionalized by L-histidinium IL, mono-6-deoxy-6-L-histidinium-β-cyclodextrin chloride (L-HMCDCl), was synthesized for the first time and utilized for enantioseparation of nefopam and chlorphenamine in capillary electrophoresis. The L-HMCDCl exhibited superior enantioselectivity compared with native β-CD. The effect of some key parameters such as chiral selector concentration, buffer pH and applied voltage on the enantioseparation was investigated in detail. In the interest of the chiral discrimination mechanism and the enhanced enantioselectivity of L-HMCDCl, molecular modeling with AutoDock was employed to study the interaction, which was in good agreement with experimental results.
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Affiliation(s)
- Xiaofei Ma
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jingtang Li
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xiaoqi Li
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, P. R. China
| | - Zijie Feng
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Xuan Yang
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Jie Liu
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
| | - Yingxiang Du
- Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, P. R. China.,State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, P. R. China
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5
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Negatively charged cyclodextrins: Synthesis and applications in chiral analysis-A review. Carbohydr Polym 2020; 256:117517. [PMID: 33483038 DOI: 10.1016/j.carbpol.2020.117517] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/02/2020] [Accepted: 12/11/2020] [Indexed: 12/12/2022]
Abstract
The negatively charged cyclodextrins (CDs) play an important role in chiral analysis due to the additional electrostatic effect beyond the host-guest inclusion, especially in enantioanalysis of positively charged and electrically neutral analytes. This review presents recent advances in application of anionic CDs for enantioanalysis during the past five years. Firstly, the synthesis approaches of random substitution and single isomers of anionic CDs are briefly discussed. The main part focuses on the chiral analysis using anionic CDs in various analytical techniques, including capillary electrophoresis, high-performance liquid chromatography, capillary electrochromatography, counter current chromatography, nuclear magnetic resonance, etc. Particular attention is given to the capillary electrophoresis application since charged CDs could be used as a carrier of enantiomers by virtue of their self-mobility and offer an easy adjustment of the enantiomer migration order. Finally, future opportunities are also discussed in the conclusion of this review.
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6
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Tan DA, Massera C, McIldowie MJ, Mocerino M. Synthesis of Distally‐Bridged Chiral Resorcinarene Crowns. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Daniel A. Tan
- Chemistry School of Molecular and Life Sciences Curtin University GPO Box U1987 6845 Perth Australia
| | - Chiara Massera
- Dipartimento di Scienze Chimiche della Vita e della Sostenibilità Ambientale Università degli Studi di Parma Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Matthew J. McIldowie
- Chemistry School of Molecular and Life Sciences Curtin University GPO Box U1987 6845 Perth Australia
| | - Mauro Mocerino
- Chemistry School of Molecular and Life Sciences Curtin University GPO Box U1987 6845 Perth Australia
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7
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Molecular docking and density functional theory calculations of vinpocetine and teicoplanin aglycone chiral selector. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01015-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Zhao Y, Wang J, Liu Y, Jiang Z, Song Y, Guo X. Enantioseparation using carboxymethyl-6-(4-methoxybenzylamino)-β-cyclodextrin as a chiral selector by capillary electrophoresis and molecular modeling study of the recognition mechanism. NEW J CHEM 2020. [DOI: 10.1039/c9nj04771a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, carboxymethyl-6-(4-methoxybenzylamino)-β-cyclodextrin (CMCDPN) was synthesized for the first time and managed to be used as a chiral selector to enantioseparate 13 kinds of chiral drugs by capillary electrophoresis.
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Affiliation(s)
- Yu Zhao
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Jinlong Wang
- School of Life Science and Bio-Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Yanru Liu
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Zhen Jiang
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Yongbo Song
- School of Life Science and Bio-Pharmaceutics
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
| | - Xingjie Guo
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang
- P. R. China
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9
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Ma X, Du Y, Sun X, Liu J, Huang Z. Synthesis and application of amino alcohol-derived chiral ionic liquids, as additives for enantioseparation in capillary electrophoresis. J Chromatogr A 2019; 1601:340-349. [DOI: 10.1016/j.chroma.2019.04.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 04/12/2019] [Accepted: 04/14/2019] [Indexed: 12/20/2022]
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10
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Ma X, Du Y, Zhu X, Feng Z, Chen C, Yang J. Evaluation of an ionic liquid chiral selector based on clindamycin phosphate in capillary electrophoresis. Anal Bioanal Chem 2019; 411:5855-5866. [DOI: 10.1007/s00216-019-01967-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/31/2019] [Accepted: 06/06/2019] [Indexed: 02/03/2023]
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11
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Peluso P, Dessì A, Dallocchio R, Mamane V, Cossu S. Recent studies of docking and molecular dynamics simulation for liquid-phase enantioseparations. Electrophoresis 2019; 40:1881-1896. [PMID: 30710444 DOI: 10.1002/elps.201800493] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/25/2019] [Accepted: 01/25/2019] [Indexed: 12/16/2022]
Abstract
Liquid-phase enantioseparations have been fruitfully applied in several fields of science. Various applications along with technical and theoretical advancements contributed to increase significantly the knowledge in this area. Nowadays, chromatographic techniques, in particular HPLC on chiral stationary phase, are considered as mature technologies. In the last thirty years, CE has been also recognized as one of the most versatile technique for analytical scale separation of enantiomers. Despite the huge number of papers published in these fields, understanding mechanistic details of the stereoselective interaction between selector and selectand is still an open issue, in particular for high-molecular weight chiral selectors like polysaccharide derivatives. With the ever growing improvement of computer facilities, hardware and software, computational techniques have become a basic tool in enantioseparation science. In this field, molecular docking and dynamics simulations proved to be extremely adaptable to model and visualize at molecular level the spatial proximity of interacting molecules in order to predict retention, selectivity, enantiomer elution order, and profile noncovalent interaction patterns underlying the recognition process. On this basis, topics and trends in using docking and molecular dynamics as theoretical complement of experimental LC and CE chiral separations are described herein. The basic concepts of these computational strategies and seminal studies performed over time are presented, with a specific focus on literature published between 2015 and November 2018. A systematic compilation of all published literature has not been attempted.
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Affiliation(s)
- Paola Peluso
- Istituto di Chimica Biomolecolare ICB CNR - Sede Secondaria di Sassari, Sassari, Sardegna, Italy
| | - Alessandro Dessì
- Istituto di Chimica Biomolecolare ICB CNR - Sede Secondaria di Sassari, Sassari, Sardegna, Italy
| | - Roberto Dallocchio
- Istituto di Chimica Biomolecolare ICB CNR - Sede Secondaria di Sassari, Sassari, Sardegna, Italy
| | - Victor Mamane
- Institut de Chimie de Strasbourg, Strasbourg, Alsace, France
| | - Sergio Cossu
- Dipartimento di Scienze Molecolari e Nanosistemi DSMN, Università Ca' Foscari Venezia, Mestre Venezia, Veneto, Italy
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12
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Wang X, Fan W, Dong Z, Liang D, Zhou T. Interactions of natural organic matter on the surface of PVP-capped silver nanoparticle under different aqueous environment. WATER RESEARCH 2018; 138:224-233. [PMID: 29602088 DOI: 10.1016/j.watres.2018.03.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
It is now widely accepted that coating on the nano-surface would critically dictate the uptake and cytotoxicity of engineering nanomaterials. However, the influence of natural organic matter (NOM) on the surface is quite limited to humic substances, while the diversity of NOM is neglected. In the present study, we tried to investigate the change of surface in the coexistence of bovine serum albumin (BSA) and humic acid (HA). The isothermal titration calorimetric measurements show that HA can combine with BSA in both freshwater or seawater, however, the patterns are different. In freshwater, HA lowered the adsorption of BSA on PVP-capped AgNPs through complexation with BSA, which prevented the contact of sulfur in BSA with PVP-AgNPs. Then in seawater, BSA retained its sulfur availability to bind with PVP-AgNPs. Furthermore, the toxicity of PVP-AgNPs incubated in the BSA/HA solution was evaluated by measuring the level of reactive oxygen species generated by Escherichia coli. The results indicated that, in seawater, the adsorbed BSA promoted the toxicity of PVP-AgNPs in the presence of Ca2+ and Mg2+, but the presence of HA limited this effect.
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Affiliation(s)
- Xiangrui Wang
- School of Space and Environment, Beihang University, Beijing 100191, PR China
| | - Wenhong Fan
- School of Space and Environment, Beihang University, Beijing 100191, PR China.
| | - Zhaomin Dong
- School of Space and Environment, Beihang University, Beijing 100191, PR China
| | - Dingyuan Liang
- School of Space and Environment, Beihang University, Beijing 100191, PR China
| | - Tingting Zhou
- School of Space and Environment, Beihang University, Beijing 100191, PR China
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13
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Current trends in molecular modeling methods applied to the study of cyclodextrin complexes. J INCL PHENOM MACRO 2017. [DOI: 10.1007/s10847-017-0763-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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Combined approach using capillary electrophoresis, NMR and molecular modeling for ambrisentan related substances analysis: Investigation of intermolecular affinities, complexation and separation mechanism. J Pharm Biomed Anal 2017; 144:220-229. [DOI: 10.1016/j.jpba.2017.01.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/16/2016] [Accepted: 01/19/2017] [Indexed: 11/20/2022]
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15
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Fang L, Du Y, Hu X, Luo L, Guo X, Guo X, Yu J. Carboxymethyl β
-cyclodextrin as chiral selector in capillary electrophoresis: Enantioseparation of 16 basic chiral drugs and its chiral recognition mechanism associated with drugs' structural features. Biomed Chromatogr 2017; 31. [DOI: 10.1002/bmc.3991] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 03/29/2017] [Accepted: 04/17/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Linlin Fang
- Department of Pharmaceutical Analysis, School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Yueying Du
- Department of Pharmaceutical Analysis, School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Xiaoyu Hu
- Department of Pharmaceutical Analysis, School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Linda Luo
- Department of Pharmaceutical Analysis, School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Xin Guo
- Department of Pharmaceutical Analysis, School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Xingjie Guo
- Department of Pharmaceutical Analysis, School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Jia Yu
- Department of Pharmaceutical Analysis, School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
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16
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Prapatpong P, Prutthiwanasan B, Nuchtavorn N, Buranaphalin S, Suntornsuk L. Brompheniramine as a novel probe for indirect UV detection and its application for the capillary electrophoresis of adamantane drugs. J Sep Sci 2017; 40:1184-1192. [DOI: 10.1002/jssc.201601162] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 12/16/2016] [Accepted: 12/16/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Pornpan Prapatpong
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Mahidol University; Bangkok Thailand
| | - Brompoj Prutthiwanasan
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Mahidol University; Bangkok Thailand
| | - Nantana Nuchtavorn
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Mahidol University; Bangkok Thailand
| | - Sawanya Buranaphalin
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Mahidol University; Bangkok Thailand
| | - Leena Suntornsuk
- Department of Pharmaceutical Chemistry; Faculty of Pharmacy; Mahidol University; Bangkok Thailand
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17
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Stavrou IJ, Agathokleous EA, Kapnissi-Christodoulou CP. Chiral selectors in CE: Recent development and applications (mid-2014 to mid-2016). Electrophoresis 2017; 38:786-819. [DOI: 10.1002/elps.201600322] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 11/22/2016] [Accepted: 11/23/2016] [Indexed: 11/05/2022]
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18
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Hu X, Guo X, Sun S, Zhu B, Yu J, Guo X. Enantioseparation of nine indanone and tetralone derivatives by HPLC using carboxymethyl-β-cyclodextrin as the mobile phase additive. Chirality 2016; 29:38-47. [DOI: 10.1002/chir.22665] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 10/10/2016] [Accepted: 10/14/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaoyu Hu
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Xin Guo
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Shuo Sun
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Bolin Zhu
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Jia Yu
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
| | - Xingjie Guo
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang Liaoning Province People's Republic of China
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19
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Recent advances on the use of cyclodextrins in the chiral analysis of drugs by capillary electrophoresis. J Chromatogr A 2016; 1467:79-94. [DOI: 10.1016/j.chroma.2016.08.029] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 07/29/2016] [Accepted: 08/11/2016] [Indexed: 11/19/2022]
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20
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Advances in the Use of Cyclodextrins as Chiral Selectors in Capillary Electrokinetic Chromatography: Fundamentals and Applications. Chromatographia 2016. [DOI: 10.1007/s10337-016-3167-0] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Salgado A, Chankvetadze B. Applications of nuclear magnetic resonance spectroscopy for the understanding of enantiomer separation mechanisms in capillary electrophoresis. J Chromatogr A 2016; 1467:95-144. [PMID: 27604161 DOI: 10.1016/j.chroma.2016.08.060] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/23/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
Abstract
This review deals with the applications of nuclear magnetic resonance (NMR) spectroscopy to understand the mechanisms of chiral separation in capillary electrophoresis (CE). It is accepted that changes observed in the separation process, including the reversal of enantiomer migration order (EMO), can be caused by subtle modifications in the molecular recognition mechanisms between enantiomer and chiral selector. These modifications may imply minor structural differences in those selector-selectand complexes that arise from the above mentioned interactions. Therefore, it is mandatory to understand the fine intermolecular interactions between analytes and chiral selectors. In other words, it is necessary to know in detail the structures of the complexes formed by the enantiomer (selectand) and the selector. Any differences in the structures of these complexes arising from either enantiomer should be detected, so that enantiomeric bias in the separation process could be explained. As to the nature of these interactions, those have been extensively reviewed, and it is not intended to be discussed here. These interactions contemplate ionic, ion-dipole and dipole-dipole interactions, hydrogen bonding, van der Waals forces, π-π stacking, steric and hydrophobic interactions. The main subject of this review is to describe how NMR spectroscopy helps to gain insight into the non-covalent intermolecular interactions between selector and selectand that lead to enantiomer separation by CE. Examples in which diastereomeric species are created by covalent (irreversible) derivatization will not be considered here. This review is structured upon the different structural classes of chiral selectors employed in CE, in which NMR spectroscopy has made substantial contributions to rationalize the observed enantioseparations. Cases in which other techniques complement NMR spectroscopic data are also mentioned.
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Affiliation(s)
- Antonio Salgado
- Centro de Espectroscopía de RMN (CERMN), Faculty of Pharmacy, University of Alcalá, University Campus, 28805 Alcalá de Henares, Madrid, Spain.
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Chavchavadze Ave 3, 0179 Tbilisi, Georgia
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22
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Preparation of graphene oxide-modified affinity capillary monoliths based on three types of amino donor for chiral separation and proteolysis. J Chromatogr A 2016; 1456:249-56. [DOI: 10.1016/j.chroma.2016.06.025] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/16/2016] [Accepted: 06/07/2016] [Indexed: 12/14/2022]
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23
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Escuder-Gilabert L, Martín-Biosca Y, Medina-Hernández MJ, Sagrado S. Enantioresolution in electrokinetic chromatography-complete filling technique using sulfated gamma-cyclodextrin. Software-free topological anticipation. J Chromatogr A 2016; 1467:391-399. [PMID: 27334416 DOI: 10.1016/j.chroma.2016.06.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/30/2016] [Accepted: 06/08/2016] [Indexed: 10/21/2022]
Abstract
Few papers have tried to predict the resolution ability of chiral selectors in capillary electrophoresis for the separation of the enantiomers of chiral compounds. In a previous work, we have used molecular information available on-line to establish enantioresolution levels of basic compounds using highly sulfated β-CD (HS-β-CD) as chiral selector in electrokinetic chromatography-complete filling technique (EKC-CFT). The present study is a continuation of this previous work, introducing some novelties. In this work, the ability of sulfated γ-cyclodextrin (S-γ-CD) as chiral selector in EKC-CFT is modelled for the first time. Thirty-three structurally unrelated cationic and neutral compounds (drugs and pesticides) are studied. Categorical enantioresolution levels (RsC, 0 or 1) are assigned from experimental enantioresolution values obtained at different S-γ-CD concentrations. Novel topological parameters connected to the chiral carbon (C*-parameters) are introduced. Four C*-parameters and a topological parameter of the whole molecule (aromatic atom count) are the most important variables according to a discriminant partial least squares-variable selection process. It suggests the preponderance of the topology adjacent to the chiral carbon to anticipate the RsC levels. A software-free anticipation protocol for new molecules is proposed. Over the current set of molecules evaluated, 100% of correct anticipations (resolved and non-resolved compounds) are obtained, while anticipation of some compounds remains undetermined. A criterion is introduced to alert on compounds which should not be anticipated.
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Affiliation(s)
| | - Yolanda Martín-Biosca
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain
| | | | - Salvador Sagrado
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain; Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Valencia, Spain
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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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Beigloo F, Noori A, Mehrgardi MA, Mousavi MF. Label-free and sensitive impedimetric nanosensor for the detection of cocaine based on a supramolecular complexation with β-cyclodextrin, immobilized on a nanostructured polymer film. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0778-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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