1
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Liliedahl RE, Hutzell E, Haley M, Predecki DP, Davidson JT. The differentiation of N-butyl pentylone isomers using GC-EI-MS and NMR. Forensic Sci Int 2023; 351:111815. [PMID: 37713773 DOI: 10.1016/j.forsciint.2023.111815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 08/21/2023] [Accepted: 08/29/2023] [Indexed: 09/17/2023]
Abstract
Forensic laboratories are faced with an ever-expanding seized drug landscape including the increasing prevalence of novel psychoactive substances (NPS), such as synthetic cathinones, that have varying potencies and scheduling. This study demonstrates a combined gas chromatography-electron ionization-mass spectrometry (GC-EI-MS) and nuclear magnetic resonance (NMR) spectroscopy approach for the differentiation of N-butyl pentylone isomers based on distinct retention times, characteristic EI mass spectra, and NMR characterization. Retention time reproducibility was assessed from 60 replicate measurements for each isomer over the course of a month. In addition, the effect of the mass spectrometer tune and the stability of an identified characteristic ion ratio using spectral data from ± 1 scan on either side of the peak apex were also statistically assessed using Welch's ANOVA testing. The presence of diastereomers for N-sec-butyl pentylone was identified using the developed GC-EI-MS method, which was confirmed using one-dimensional and two-dimensional NMR spectroscopy. The retention time reproducibility of the chromatographic method was ± 0.076% or less over the course of a month. An identified characteristic ion ratio between the abundance of the fragment ion at m/z 128 and the fragment ion at m/z 72 enabled the differentiation of the four N-butyl pentylone isomers, even when accounting for the effect of the mass spectrometer tune and mass spectral scans used to calculate the characteristic ion ratio. The 95% confidence interval mean abundance ratio of the fragment ions at m/z 128 and m/z 72 was 17.14 ± 0.14 for N-butyl pentylone, 6.44 ± 0.05 for N-isobutyl pentylone, 3.38 ± 0.02 for N-sec-butyl pentylone, and 0.75 ± 0.01 for N-tert-butyl pentylone. These results highlight the capabilities of a combined GC-EI-MS and NMR approach for the differentiation and characterization of synthetic cathinone isomers.
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Affiliation(s)
- Ruby E Liliedahl
- Department of Forensic Science, Sam Houston State University, Huntsville, TX, USA
| | - Elise Hutzell
- Department of Chemistry, Shippensburg University, Shippensburg, PA, USA
| | - Madison Haley
- Department of Chemistry, Shippensburg University, Shippensburg, PA, USA
| | - Daniel P Predecki
- Department of Chemistry, Shippensburg University, Shippensburg, PA, USA.
| | - J Tyler Davidson
- Department of Forensic Science, Sam Houston State University, Huntsville, TX, USA.
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2
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Zhou Y, He Y, Zhu Z. Understanding of formation and change of chiral aroma compounds from tea leaf to tea cup provides essential information for tea quality improvement. Food Res Int 2023; 167:112703. [PMID: 37087269 DOI: 10.1016/j.foodres.2023.112703] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 03/08/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023]
Abstract
Abundant secondary metabolites endow tea with unique quality characteristics, among which aroma is the core component of tea quality. The ratio of chiral isomers of aroma compounds greatly affects the flavor of tea leaves. In this paper, we review the progress of research on chiral aroma compounds in tea. With the well-established GC-MS methods, the formation of, and changes in, the chiral configuration of tea aroma compounds during the whole cycle of tea leaves from the plant to the tea cup has been studied in detail. The ratio of aroma chiral isomers varies among different tea varieties and finished teas. Enzymatic reactions involving tea aroma synthases and glycoside hydrolases participate the formation of aroma compound chiral isomers during tea tree growth and tea processing. Non-enzymatic reactions including environmental factors such as high temperature and microbial fermentation involve in the change of aroma compound chiral isomers during tea processing and storage. In the future, it will be interesting to determine how changes in the proportions of chiral isomers of aroma compounds affect the environmental adaptability of tea trees; and to determine how to improve tea flavor by modifying processing methods or targeting specific genes to alter the ratio of chiral isomers of aroma compounds.
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Affiliation(s)
- Ying Zhou
- Hainan Institute, Zhejiang University, Yazhou District, Sanya 572025, China.
| | - Yunchuan He
- Hainan Institute, Zhejiang University, Yazhou District, Sanya 572025, China; College of Agriculture and Biotechnology, Zhejiang University, Xihu District, Hangzhou 310030, China
| | - Zengrong Zhu
- Hainan Institute, Zhejiang University, Yazhou District, Sanya 572025, China; College of Agriculture and Biotechnology, Zhejiang University, Xihu District, Hangzhou 310030, China
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3
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Chirality: An inescapable concept for the pharmaceutical, bio‐pharmaceutical, food, and cosmetic industries. SEPARATION SCIENCE PLUS 2023. [DOI: 10.1002/sscp.202200131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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4
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Retention Indices for Naturally-Occurring Chiral and Achiral Compounds on Common Gas Chromatography Chiral Stationary Phases. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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5
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Lugasi L, Otis G, Oliel M, Margel S, Mastai Y. Chirality of proteinoid nanoparticles made of lysine and phenylalanine. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Liroy Lugasi
- Department of Chemistry Institute of Nanotechnology—Bar‐Ilan University Ramat‐Gan Israel
| | - Gil Otis
- Department of Chemistry Institute of Nanotechnology—Bar‐Ilan University Ramat‐Gan Israel
| | - Matan Oliel
- Department of Chemistry Institute of Nanotechnology—Bar‐Ilan University Ramat‐Gan Israel
| | - Shlomo Margel
- Department of Chemistry Institute of Nanotechnology—Bar‐Ilan University Ramat‐Gan Israel
| | - Yitzhak Mastai
- Department of Chemistry Institute of Nanotechnology—Bar‐Ilan University Ramat‐Gan Israel
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6
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Li L, Liu Z, Han L, Che S, Duan Y. Chiral mesostructured hydroxide zinc carbonate for enantioseparation in high performance liquid chromatography. Chem Commun (Camb) 2022; 58:4040-4043. [PMID: 35262102 DOI: 10.1039/d1cc06813j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral mesostructured hydroxide zinc carbonate coated silica gel (CMHZC@S) was prepared by a hydrothermal route using amino acids as symmetry-breaking agents. CMHZC@S with three levels of hierarchical chiralities, as a chiral stationary phase (CSP), showed enantiomeric separation ability for high performance liquid chromatography (HPLC).
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Affiliation(s)
- Lin Li
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, P. R. China.
| | - Zexi Liu
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, P. R. China.
| | - Lu Han
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, P. R. China.
| | - Shunai Che
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, P. R. China. .,School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, State Key Laboratory of Matrix Composite, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, P. R. China
| | - Yingying Duan
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, P. R. China.
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7
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Betzenbichler G, Huber L, Kräh S, Morkos MLK, Siegle AF, Trapp O. Chiral stationary phases and applications in gas chromatography. Chirality 2022; 34:732-759. [PMID: 35315953 DOI: 10.1002/chir.23427] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/06/2022] [Accepted: 02/07/2022] [Indexed: 12/15/2022]
Abstract
Chiral compounds are ubiquitous in nature and play a pivotal role in biochemical processes, in chiroptical materials and applications, and as chiral drugs. The analysis and determination of the enantiomeric ratio (er) of chiral compounds is of enormous scientific, industrial, and economic importance. Chiral separation techniques and methods have become indispensable tools to separate chiral compounds into their enantiomers on an analytical as well on a preparative level to obtain enantiopure compounds. Chiral gas chromatography and high-performance liquid chromatography have paved the way and fostered several research areas, that is, asymmetric synthesis and catalysis in organic, medicinal, pharmaceutical, and supramolecular chemistry. The development of highly enantioselective chiral stationary phases was essential. In particular, the elucidation and understanding of the underlying enantioselective supramolecular separation mechanisms led to the design of new chiral stationary phases. This review article focuses on the development of chiral stationary phases for gas chromatography. The fundamental mechanisms of the recognition and separation of enantiomers and the selectors and chiral stationary phases used in chiral gas chromatography are presented. An overview over syntheses and applications of these chiral stationary phases is presented as a practical guidance for enantioselective separation of chiral compound classes and substances by gas chromatography.
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Affiliation(s)
| | - Laura Huber
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Sabrina Kräh
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | | | - Alexander F Siegle
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Oliver Trapp
- Department of Chemistry, Ludwig-Maximilians-University Munich, Munich, Germany
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8
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Yang S, Gu L, Wu F, Dai X, Xu F, Li Q, Fang X, Yu S, Ding CF. The chirality determination of amino acids by forming complexes with cyclodextrins and metal ions using ion mobility spectrometry, and a DFT calculation. Talanta 2022; 243:123363. [PMID: 35272154 DOI: 10.1016/j.talanta.2022.123363] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/15/2022] [Accepted: 03/02/2022] [Indexed: 02/06/2023]
Abstract
Chiral recognition is of highly interest in the areas of chemistry, pharmaceuticals, and bioscience. An effective strategy of enantiomeric determination of amino acids (AAs) was developed in this work. All 19 natural AAs enantiomers can be easily distinguished by ion mobility-mass spectrometry of the non-covalent complexes of AAs with cyclodextrins (α-CD, β-CD and γ-CD) and Mg2+ without any chemical derivatization. Differences of the mobilities between the enantiomers' complexes is from 0.006 to 0.058 V s/cm2. In addition, the complex of [β-CD + Phe + Mg]2+ was selected as an example to study the relative quantification by measuring L/D-Phe at different molar ratio of 10:1 to 1:10 in the μM range, resulting in a good linearity (R2 > 0.99) and high sensitivity at 2 μM. A DFT calculation was also performed to illustrate the detailed molecular structure of the complexes of CDs, Mg2+ and D- or L-Phe. Both experiment and theoretical calculation showed that Mg2+ plays an important role in host/guest interactions, which changed the molecular conformations by non-covalent interaction between Mg2+ and CDs, and resulted in the different collision cross-sections of the complex ions of CDs, Mg2+ and D- or L-AAs in the gas phase. This effective and convenient strategy could potentially be utilized in scientific research and industry for routine enantiomeric determination of natural AAs, peptides and some other small chiral biomolecules such as non-natural AAs and carboxylic acid-containing drugs.
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Affiliation(s)
- Shutong Yang
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China; Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Liancheng Gu
- Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Fangling Wu
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Xinhua Dai
- National Institute of Metrology, Beijing, 100029, China
| | - Fuxing Xu
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China
| | - Qiaoyu Li
- Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Xiang Fang
- National Institute of Metrology, Beijing, 100029, China.
| | - Shaoning Yu
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
| | - Chuan-Fan Ding
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
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Wang H, Wu F, Xu F, Liu Y, Ding CF. Identification of Bi-2-naphthol and Its Phosphate Derivatives Complexed with Cyclodextrin and Metal Ions Using Trapped Ion Mobility Spectrometry. Anal Chem 2021; 93:15096-15104. [PMID: 34726389 DOI: 10.1021/acs.analchem.1c03378] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The separation of chiral enantiomers has gained increasing importance in many research fields, becoming a major research hotspot. 1,1'-Bi (2-naphthol) (BINOL) and 1,1'-binaphthyl-2,2'-diyl hydrogen phosphate (BNP) are referred to as atropisomer chiral molecules, which are essential chiral catalysts and intermediates in several reactions. In this work, BINOL and BNP atropisomers are separated and identified using trapped ion mobility spectrometry (TIMS) to monitor the different mobilities of their derivative complexes. The latter are obtained by the simple mixing of BINOL/BNP, cyclodextrin (CD), and the metal ions through noncovalent interactions. The results indicate that the enantiomer complexes of BINOL/BNP can be separated with a certain specificity, showing that R-, S-BINOL can be separated by the ternary complexes of [BINOL+γ-CD + Rb]+, [BINOL+γ-CD + Cu-H]+, and [BINOL+β-CD + Cu-H]+ based on the difference in their mobility; similarly, the R-, S-BNP enantiomer can be isolated by the formed ternary complexes of [BNP+α-CD + Ba-H]+, [BNP+β-CD + Co-H]+, [BNP+β-CD + Ca-H]+, [BNP+β-CD + Cu-H]+, [BNP+β-CD + Fe-H]+, [BNP+β-CD + Li]+, and [BNP+β-CD + Sr-H]+. Furthermore, the peak separation rate (Rp-p) of the complexes was calculated, with the Rp-p of the three enantiomers of BINOL being 1.130 and the Rp-p of the seven complexes of BNP reaching 2.089. At last, the different survival yields for the collision energies were found for the enantiomer complexes, revealing the rigid structural differences in the stereospecificity of the enantiomer complexes that result in the separation by the TIMS. Additionally, due to the advantages of simple operation, fast speed, and high sensitivity and because chemical derivatization and chromatographic separation are not required, the developed method can provide a promising and powerful strategy for the separation and identification of binaphthyl derivatives or even other enantiomers of the reaction intermediates.
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Affiliation(s)
- Huanhuan Wang
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211 Zhejiang, P. R. China
| | - Fangling Wu
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211 Zhejiang, P. R. China
| | - Fuxing Xu
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211 Zhejiang, P. R. China
| | - Yiyi Liu
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211 Zhejiang, P. R. China
| | - Chuan-Fan Ding
- Zhejiang Provincial Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211 Zhejiang, P. R. China
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10
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Li Y, Zhou B, Wang K, Zhang J, Sun W, Zhang L, Guo Y. Powerful Steroid-Based Chiral Selector for High-Throughput Enantiomeric Separation of α-Amino Acids Utilizing Ion Mobility-Mass Spectrometry. Anal Chem 2021; 93:13589-13596. [PMID: 34597017 DOI: 10.1021/acs.analchem.1c02691] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Stereospecific recognition of amino acids (AAs) plays a crucial role in chiral biomarker-based diagnosis and prognosis. Separation of AA enantiomers is a long and tedious task due to the requirement of AA derivatization prior to the chromatographic or electrophoretic steps which are also time-consuming. Here, a mass-tagged chiral selector named [d0]/[d5]-estradiol-3-benzoate-17β-chloroformate ([d0]/[d5]-17β-EBC) with high reactivity and good enantiomeric resolution in regard to AAs was developed. After a quick and easy chemical derivatization step of AAs using 17β-EBC as the single chiral selector before ion mobility-mass spectrometry analysis, good enantiomer separation was achieved for 19 chiral proteinogenic AAs in a single analytical run (∼2 s). A linear calibration curve of enantiomeric excess was also established using [d0]/[d5]-17β-EBC. It was demonstrated to be capable of determining enantiomeric ratios down to 0.5% in the nanomolar range. 17β-EBC was successfully applied to investigate the absolute configuration of AAs among peptide drugs and detect trace levels of d-AAs in complex biological samples. These results indicated that [d0]/[d5]-17β-EBC may contribute to entail a valuable step forward in peptide drug quality control and discovering chiral disease biomarkers.
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Affiliation(s)
- Yuling Li
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Bowen Zhou
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Keke Wang
- Shimadzu Research Laboratory (Shanghai) Co. Ltd., Shanghai 201206, China
| | - Jing Zhang
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Wenjian Sun
- Shimadzu Research Laboratory (Shanghai) Co. Ltd., Shanghai 201206, China
| | - Li Zhang
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry and National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
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Abstract
Chiral molecules possess enantiomers that have non-superimposable chemical structures but exhibit identical nuclear magnetic resonance (NMR) spectra. This feature prevents the use of NMR spectroscopic methods for the determination of enantiomeric excesses (ee) of chiral molecules, using simple mixtures of their enantiomers. Recently, however, it was reported that the addition of a symmetrical prochiral molecule (a reporter or host) into a solution of chiral analyte can lead to estimation of ee through interactions involving rapid exchange of the chiral analyte (guest) in the formed host–guest complex. This is due to the ee-dependent splitting of NMR resonances of the prochiral host molecule based on averaging the chemical shift non-equivalency caused by the presence of a chiral guest. The mechanism is not dependent on diastereomer formation, and 1:1 host–guest complexes can also show ee-dependent NMR peak splitting. Prochiral molecules capable of ee sensing using the NMR technique are now referred to as so-called prochiral solvating agents (pro-CSAs). pro-CSAs represent a family of reagents distinct from the commonly used NMR chiral derivatizing reagents (where chiral auxiliaries are used to derivatize enantiomers to diastereomers) or chiral solvating agents (where chiral auxiliaries interact in an asymmetric manner with analyte enantiomers). pro-CSA methods are unique since neither pro-CSA nor NMR contains chiral factors, making the technique neutral with respect to chirality. Here, we review our recent work on this matter involving several different nominally achiral receptor molecules whose unique guest binding properties and solution characteristics (especially with regard to NMR spectroscopy) allow for the estimation of ee in the corresponding chiral guests.
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Zhou T, Katsuragawa M, Xing T, Fukaya K, Okuda T, Tokiwa T, Tashiro E, Imoto M, Oku N, Urabe D, Igarashi Y. Cyclopeptides from the Mushroom Pathogen Fungus Cladobotryum varium. JOURNAL OF NATURAL PRODUCTS 2021; 84:327-338. [PMID: 33439652 DOI: 10.1021/acs.jnatprod.0c00980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Three new cyclopeptides with serial Phe residues were identified with the aid of HPLC-DAD analysis, from the culture broth of Cladobotryum varium, a fungal pathogen causing mushroom cobweb disease. Cladoamides A (1) and B (2) have two consecutive N-methylphenylalanine units in the destruxin class cyclic depsipentapeptide framework, while cladoamide C (3) has a three consecutive Phe motif in a cyclopentapeptide structure. Of these three cyclopeptides, 1 showed potent autophagy-inducing activity at 10 μg/mL, comparable to a positive control, rapamycin. For the determination of the absolute configurations of the Ile residues in 1 and 3, new conditions for separating Ile and allo-Ile, using a pentafluorophenyl-bonded solid phase and methanolic solvent, were established within the analytical scheme of the advanced Marfey's method, thus offering a convenient alternative to the C3 Marfey's method, which requires elution with a three-solvent mixture. The sequence of two d-Phe and one l-Phe in 3 was determined through NMR chemical shift prediction by DFT-based calculations and chemical synthesis, which demonstrated the significance of noncovalent interactions in the accurate calculation of stable conformers for peptides with multiple aromatic rings.
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Affiliation(s)
- Tao Zhou
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Misaki Katsuragawa
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Tian Xing
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Keisuke Fukaya
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Toru Okuda
- HyphaGenesis, Inc., 2-18-28 Tamagawa-Gakuen, Machida, Tokyo 194-0041, Japan
| | - Toshiyuki Tokiwa
- Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan
| | - Etsu Tashiro
- Department of Bioscience and Informatics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Masaya Imoto
- Department of Bioscience and Informatics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Naoya Oku
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Daisuke Urabe
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
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13
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Zhao Y, Zhu X, Jiang W, Liu H, Sun B. Chiral Recognition for Chromatography and Membrane-Based Separations: Recent Developments and Future Prospects. Molecules 2021; 26:1145. [PMID: 33669919 PMCID: PMC7924630 DOI: 10.3390/molecules26041145] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 12/15/2022] Open
Abstract
With the rapid development of global industry and increasingly frequent product circulation, the separation and detection of chiral drugs/pesticides are becoming increasingly important. The chiral nature of substances can result in harm to the human body, and the selective endocrine-disrupting effect of drug enantiomers is caused by differential enantiospecific binding to receptors. This review is devoted to the specific recognition and resolution of chiral molecules by chromatography and membrane-based enantioseparation techniques. Chromatographic enantiomer separations with chiral stationary phase (CSP)-based columns and membrane-based enantiomer filtration are detailed. In addition, the unique properties of these chiral resolution methods have been summarized for practical applications in the chemistry, environment, biology, medicine, and food industries. We further discussed the recognition mechanism in analytical enantioseparations and analyzed recent developments and future prospects of chromatographic and membrane-based enantioseparations.
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Affiliation(s)
| | | | | | - Huilin Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China; (Y.Z.); (X.Z.); (W.J.); (B.S.)
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14
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Xie C, Gu L, Wu Q, Li L, Wang C, Yu J, Tang K. Effective Chiral Discrimination of Amino Acids through Oligosaccharide Incorporation by Trapped Ion Mobility Spectrometry. Anal Chem 2021; 93:859-867. [PMID: 33226780 DOI: 10.1021/acs.analchem.0c03461] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Chiral analysis is critical to many research fields due to different biological functions of enantiomers in living systems. Although the use of ion mobility spectrometry (IMS) has become an alternative technology in the area of chiral measurements, there is still a lack of a general chiral selector for IMS-based chiral recognition, especially for small chiral molecules. Here, a new method using oligosaccharides as the chiral selector has been developed to discriminate chiral amino acids (AAs) by trapped ion mobility spectrometry-mass spectrometry (TIMS-MS). We analyzed 21 chiral amino acids, including small molecules (e.g., alanine and cysteine). Our data showed that the use of nonreducing tetrasaccharides was effective for the separation of chiral AAs, which differentiated 21 chiral AAs without using metal ions. By further incorporating a copper ion, the separation resolution could be improved to 1.64 on average, which accounts for an additional 52% improvement on top of the already achieved separation in metal-free analysis. These results indicate that the use of tetrasaccharides is an effective strategy for the separation of AA enantiomers by TIMS. The method developed in this study may open up a new strategy for effective IMS-based chiral analysis.
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Affiliation(s)
- Chengyi Xie
- Institute of Mass Spectrometry, Ningbo University, Ningbo 315211, P. R. China.,Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, P. R. China
| | - Liancheng Gu
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Qidi Wu
- Institute of Mass Spectrometry, Ningbo University, Ningbo 315211, P. R. China.,Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, P. R. China
| | - Lei Li
- Institute of Mass Spectrometry, Ningbo University, Ningbo 315211, P. R. China.,School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Chenlu Wang
- Institute of Mass Spectrometry, Ningbo University, Ningbo 315211, P. R. China.,School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
| | - Jiancheng Yu
- Institute of Mass Spectrometry, Ningbo University, Ningbo 315211, P. R. China.,Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, P. R. China
| | - Keqi Tang
- Institute of Mass Spectrometry, Ningbo University, Ningbo 315211, P. R. China.,School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
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15
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Abstract
We report on the generation of a super- and homochiral field where linearly polarized incident light is twisted by plasmonic dimeric nanostructure within the gap. The asymmetry in exciting a molecule's chiral polarizability is enhanced, resulting in discriminatory nanocolorimetry. A chromaticity shift is used to discriminate the handedness of chiral molecules which is sensitive, faster, and self-referenced, and requires only a single scan as compared to existing methods.
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Affiliation(s)
- Po-Wen Tang
- Department of Optics and Photonics, National Central University, 300, Jhongda Road, Jhongli, Taoyuan 32001, Taiwan
| | - Chao-Yi Tai
- Department of Optics and Photonics, National Central University, 300, Jhongda Road, Jhongli, Taoyuan 32001, Taiwan
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16
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Anand D, Dhoke GV, Gehrmann J, Garakani TM, Davari MD, Bocola M, Zhu L, Schwaneberg U. Chiral separation of d/l-arginine with whole cells through an engineered FhuA nanochannel. Chem Commun (Camb) 2019; 55:5431-5434. [PMID: 30916680 DOI: 10.1039/c9cc00154a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Downstream processing to obtain enantiopure compounds from a racemic mixture relies mainly on crystallization. Natural transporters can specifically translocate enantiomers through membranes. Here a β-barrel transmembrane protein FhuA is re-engineered into a chiral channel protein (FhuAF4) to resolve racemic mixtures of d-/l-arginine. The engineered FhuAF4 variant exhibits an enantioselectivity (E-value) of 1.92 and an enantiomeric excess percentage (ee%) of 23.91 at 52.39% conversion. OmniChange mutant libraries at the computationally identified "filter-regions" likely help to identify FhuA variants for enantiomeric separation of other compounds.
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Affiliation(s)
- Deepak Anand
- Institute of Biotechnology, RWTH Aachen University Worringer Weg 3, D-52074 Aachen, Germany.
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17
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Boc-phenylalanine Grafted Poly(3,4-propylenedioxythiophene) Film for Electrochemically Chiral Recognition of 3,4-Dihydroxyphenylalanine Enantiomers. CHINESE JOURNAL OF POLYMER SCIENCE 2019. [DOI: 10.1007/s10118-019-2211-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Meetani MA, Alremeithi RH, Mousa MK. Enantioseparation of Synthetic Cathinones Enantiomers with Tertiary Amine Structure in Urine and Plasma. J Chromatogr Sci 2019; 57:361-368. [DOI: 10.1093/chromsci/bmz008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 12/23/2018] [Accepted: 01/09/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Mohammed A Meetani
- Chemistry Department, College of science, United Arab Emirates University, Al-Ain, UAE
| | - Rashed H Alremeithi
- Chemistry Department, College of science, United Arab Emirates University, Al-Ain, UAE
| | - Muath K Mousa
- Chemistry Department, College of science, United Arab Emirates University, Al-Ain, UAE
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19
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Jiang S, Wu C, Yu J, Sun T, Guo X. Separation of eight bedaquiline analogue diastereomers by HPLC on an immobilized polysaccharide-based chiral stationary phase. Chirality 2018; 31:72-78. [DOI: 10.1002/chir.23037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 09/28/2018] [Accepted: 10/31/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Shenmeng Jiang
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Chengjun Wu
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Jia Yu
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Tiemin Sun
- School of Pharmaceutical Engineering; Shenyang Pharmaceutical University; Shenyang P. R. China
| | - Xingjie Guo
- School of Pharmacy; Shenyang Pharmaceutical University; Shenyang P. R. China
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20
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Nicolaou AG, Mavroudi MC, Stavrou IJ, Weatherly CA, Kapnissi-Christodoulou CP. Synergistic enantioseparation systems with either cyclodextrins or cyclofructans and L-alanine Tert butyl ester lactate. Electrophoresis 2018; 40:539-546. [PMID: 30450594 DOI: 10.1002/elps.201800257] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 10/18/2018] [Accepted: 11/13/2018] [Indexed: 11/06/2022]
Abstract
The combined use of chiral ionic liquids (CILs) and conventional chiral selectors (CSs) in CE, to establish a synergistic system, has proven to be an effective approach for the separation of enantiomeric pairs. In this study, a new CE method was developed, employing a binary system of a CS, either a cyclodextrin (CD) or a cyclofructan (CF), and a chiral amino acid ester-based ionic liquid (AAIL), for the chiral separation of four basic, acidic and zwitterionic drug compounds. In particular, the enantioseparation of two anticoagulants, warfarin (WAR) and coumachlor (COU), a non-opioid analgesic, nefopam (NEF) and a third-generation antihistamine, fexofenadine (FXD), was examined, by supporting the BGE with a CS and the chiral AAIL L-alanine tert butyl ester lactate (L-AlaC4 Lac). Parameters, such as the type of the CS, the concentration of both the CS and L-AlaC4 Lac, and the BGE pH, were methodically examined in order to optimize the chiral separation of each analyte. It was observed that, in some cases, the addition of the AAIL into the BGE improved both resolution (Rs ) and efficiency (N) significantly. In other cases, the synergistic effect enabled baseline separation of analyte enantiomers, at a much lower concentration of the CS. Finally, after optimization of separation conditions, baseline separations (Rs >1.5) of all four analytes were achieved in less than 5 min.
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21
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Separation of rotamers of 5-nitrosopyrimidines and estimation of binding constants of their complexes with β-cyclodextrin by capillary electrophoresis. J Chromatogr A 2018; 1570:164-171. [DOI: 10.1016/j.chroma.2018.07.083] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 07/25/2018] [Accepted: 07/29/2018] [Indexed: 12/12/2022]
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22
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Adhikari S, Paik MJ, Lee W. Liquid Chromatographic Enantiomeric Separation of Chiral Aliphatic Amines Using 2-Hydroxynaphthaldehyde as a Derivatizing Agent on Polysaccharide-Derived Chiral Stationary Phases. Chromatographia 2018. [DOI: 10.1007/s10337-018-3560-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Mutalikdesai A, Zoabi A, Kumar VB, Abu-Reziq R, Hassner A, Gedanken A. Enantioselective Separation of Racemic Tryptophan with Sonochemically Prepared Egg Albumin Microspheres. ChemistrySelect 2018. [DOI: 10.1002/slct.201800337] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amruta Mutalikdesai
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Amani Zoabi
- Institute of Chemistry; Casali Center for Applied Chemistry; Center for Nanoscience and Nanotechnology; The Hebrew University of Jerusalem; Jerusalem 9190401 Israel
| | - Vijay Bhooshan Kumar
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Raed Abu-Reziq
- Institute of Chemistry; Casali Center for Applied Chemistry; Center for Nanoscience and Nanotechnology; The Hebrew University of Jerusalem; Jerusalem 9190401 Israel
| | - Alfred Hassner
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
| | - Aharon Gedanken
- Bar Ilan Institute for Nanotechnology and Advanced Materials; Department of Chemistry; Bar-Ilan University; Ramat-Gan 5290002 Israel
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24
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Aboul-Enein HY, Aboul-Enein MN, El-Azzouny AA, Saleh OA, Hassan RM, Amin KM. Enantioseparation of Substituted 1, 3-Diazaspiro [4.5]Decan-4-Ones: HPLC Comparative Study on Different Polysaccharide Type Chiral Stationary Phases. J Chromatogr Sci 2017; 56:160-165. [DOI: 10.1093/chromsci/bmx098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 11/07/2017] [Indexed: 11/13/2022]
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25
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Dudzik K, Wojcik J, Ejchart A, Nowakowski M. Size makes a difference: Chiral recognition in complexes of fenchone with cyclodextrins studied by means of NMR titration. Chirality 2017; 29:747-758. [DOI: 10.1002/chir.22747] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 07/19/2017] [Accepted: 07/21/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Karolina Dudzik
- Faculty of Pharmacy with the Laboratory Medicine Division; Medical University of Warsaw; Warsaw Poland
| | - Jacek Wojcik
- Institute of Biochemistry and Biophysics; Laboratory of Biological NMR; Warsaw Poland
| | - Andrzej Ejchart
- Institute of Biochemistry and Biophysics; Laboratory of Biological NMR; Warsaw Poland
| | - Michał Nowakowski
- Faculty of Chemistry, Biological and Chemical Research Centre; University of Warsaw; Warsaw Poland
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26
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Eibler D, Vetter W. Enantioseparation and optical rotation of flavor-relevant 4-alkyl-branched fatty acids. J Chromatogr A 2017; 1505:87-95. [DOI: 10.1016/j.chroma.2017.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 05/04/2017] [Accepted: 05/05/2017] [Indexed: 11/16/2022]
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27
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Cecilio Fonseca M, Santos da Silva RC, Nascimento CS, Bastos Borges K. Computational contribution to the electrophoretic enantiomer separation mechanism and migration order using modified β-cyclodextrins. Electrophoresis 2017; 38:1860-1868. [PMID: 28387965 DOI: 10.1002/elps.201600468] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 03/22/2017] [Accepted: 03/25/2017] [Indexed: 11/07/2022]
Abstract
Capillary electrophoresis (CE) is an extremely effective technique in many kinds of separations, including separation of enantiomers. Some additional techniques may be necessary to determine the enantiomer migration order (EMO) and also the mechanism involved in chiral recognition. This paper reports the development and optimization of a CE method for enantioseparation of racemic mixture of both R- and S-stereoisomers of tramadol (TRM) with a computational contribution for the EMO determination and the responsible mechanisms for chiral distinction. Parameters such as composition and concentration of background electrolyte (BGE) and type and concentration of cyclodextrins (CD) were evaluated. For calculations, a sequential methodology was used, resorting to semiempirical Parametric Model 3 (PM3) followed by calculations accomplished using density functional theory. The best results were obtained with sulfated-β-CD (s-β-CD) and carboxymethyl-β-cyclodextrin (cm-β-CD) as chiral selector. Calculations show that the inclusion of TRM is not a probable process due to the shape of the TRM molecule and the size CDs cavities. Therefore, the chiral recognition process occurs by the formation of association complexes between modified β-CD and groups of TRM molecules. The structural analysis of the fragments of complexes at a pH of 10 and a thermodynamic analysis of the complexes' formation process allows determining the EMO. Comparing results obtained experimentally and computationally, it seems that the developed method is adequate for separation of TRM enantiomers and the computational methodology is also adequate to get a sense of the system at a molecular level.
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Affiliation(s)
- Matheus Cecilio Fonseca
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, São João del-Rei, Minas Gerais, Brazil
| | - Ricky Cássio Santos da Silva
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, São João del-Rei, Minas Gerais, Brazil
| | - Clebio Soares Nascimento
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, São João del-Rei, Minas Gerais, Brazil
| | - Keyller Bastos Borges
- Departamento de Ciências Naturais, Universidade Federal de São João del-Rei, São João del-Rei, Minas Gerais, Brazil
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28
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Jeanne Dit Fouque D, Maroto A, Memboeuf A. Purification and Quantification of an Isomeric Compound in a Mixture by Collisional Excitation in Multistage Mass Spectrometry Experiments. Anal Chem 2016; 88:10821-10825. [PMID: 27805355 DOI: 10.1021/acs.analchem.6b03490] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The differentiation, characterization, and quantification of isomers and/or isobars in mixtures is a recurrent problem in mass spectrometry and more generally in analytical chemistry. Here we present a new strategy to assess the purity of a compound that is susceptible to be contaminated with another isomeric side-product in trace levels. Providing one of the isomers is available as pure sample, this new strategy allows the detection of isomeric contamination. This is done thanks to a "gas-phase collisional purification" inside an ion trap mass spectrometer paving the way for an improved analysis of at least similar samples. This strategy consists in using collision induced dissociation (CID) multistage mass spectrometry (MS2 and MS3) experiments and the survival yield (SY) technique. It has been successfully applied to mixtures of cyclic poly(L-lactide) (PLA) with increasing amounts of its linear topological isomer. Purification in gas phase of PLA mixtures was established based on SY curves obtained in MS3 mode: all samples gave rise to the same SY curve corresponding then to the pure cyclic component. This new strategy was sensitive enough to detect traces of linear PLA (<3%) in a sample of cyclic PLA that was supposedly pure according to other characterization techniques (1H NMR, MALDI-HRMS, and size-exclusion chromatography). Moreover, in this case, the presence of linear isomer was undetectable according to MS/MS or MS/MS/MS analysis only as fragment ions are also of the same m/z values. This type of approach could easily be implemented in hyphenated mass spectrometric techniques to improve the structural and quantitative analysis of complex samples.
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Affiliation(s)
- Dany Jeanne Dit Fouque
- UMR CNRS 6521, CEMCA, Université de Bretagne Occidentale , 6 Av. Le Gorgeu, 29238 Brest Cedex 3, France
| | - Alicia Maroto
- UMR CNRS 6521, CEMCA, Université de Bretagne Occidentale , 6 Av. Le Gorgeu, 29238 Brest Cedex 3, France
| | - Antony Memboeuf
- UMR CNRS 6521, CEMCA, Université de Bretagne Occidentale , 6 Av. Le Gorgeu, 29238 Brest Cedex 3, France
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29
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Chen XJ, Yang GL, Xu XD, Sheng JJ, Shen J, Dong HX. Preparation and chromatographic evaluation of β-cyclodextrin derivative CSPs bearing substituted phenylcarbamate groups for HPLC. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1227993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Xing Juan Chen
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Guang Lei Yang
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Xiao Dong Xu
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Jin Jin Sheng
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Jun Shen
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, China
| | - Hong Xing Dong
- Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin, China
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30
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Chromatographic and Spectroscopic Studies on β-Cyclodextrin Functionalized Ionic Liquid as Chiral Stationary Phase: Enantioseparation of Flavonoids. Chromatographia 2016. [DOI: 10.1007/s10337-016-3169-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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31
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Kuraeva YG, Onuchak LA, Evdokimova MA. Thermodynamics of the sorption of organic compounds on polyethylene glycol 400–permethylated β-cyclodextrin stationary phase and its enantioselectivity in gas chromatography. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s0036024416080136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Myrgorodska I, Javelle T, Meinert C, Meierhenrich UJ. Enantioselective Gas Chromatography in Search of the Origin of Biomolecular Asymmetry in Outer Space. Isr J Chem 2016. [DOI: 10.1002/ijch.201600067] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Iuliia Myrgorodska
- Institut de Chimie de Nice ICN, UMR CNRS 7272; Université Nice Sophia Antipolis, Faculté des Sciences; ParcValrose 06108 Nice France
- Synchrotron SOLEIL; L'Orme des Merisiers; BP 48 Saint Aubin 91192 Gif-sur-Yvette France
| | - Thomas Javelle
- Institut de Chimie de Nice ICN, UMR CNRS 7272; Université Nice Sophia Antipolis, Faculté des Sciences; ParcValrose 06108 Nice France
| | - Cornelia Meinert
- Institut de Chimie de Nice ICN, UMR CNRS 7272; Université Nice Sophia Antipolis, Faculté des Sciences; ParcValrose 06108 Nice France
| | - Uwe J. Meierhenrich
- Institut de Chimie de Nice ICN, UMR CNRS 7272; Université Nice Sophia Antipolis, Faculté des Sciences; ParcValrose 06108 Nice France
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33
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Enantioselective Determination of Polycyclic Musks in River and Wastewater by GC/MS/MS. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13030349. [PMID: 27011195 PMCID: PMC4809012 DOI: 10.3390/ijerph13030349] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/17/2016] [Accepted: 03/17/2016] [Indexed: 11/29/2022]
Abstract
The separation of chiral compounds is an interesting and challenging topic in analytical chemistry, especially in environmental fields. Enantioselective degradation or bioaccumulation has been observed for several chiral pollutants. Polycyclic musks are chiral and are widely used as fragrances in a variety of personal care products such as soaps, shampoos, cosmetics and perfumes. In this study, the gas chromatographic separation of chiral polycyclic musks, 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclo-penta-γ-2-benzopyrane (HHCB), 7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetra-hydronaphthalene (AHTN), 6-acetyl-1,1,2,3,3,5-hexamethylindane (AHDI), 5-acetyl-1,1,2,6-tetramethyl-3-iso-propylindane (ATII), and 6,7-dihydro-1,1,2,3,3-pentamethyl-4(5H)-indanone (DPMI) was achieved on modified cyclodextrin stationary phase (heptakis (2,3-di-O-methyl-6-O-tert-butyl-dimethylsilyl-β-CD in DV-1701)). Separation techniques are coupled to tandem mass spectrometry (MS-MS), as it provides the sensitivity and selectivity needed. River and wastewaters (influents and effluents of wastewater treatment plants (WWTPs)) in the Nakdong River were investigated with regard to the concentrations and the enantiomeric ratios of polycyclic musks. HHCB was most frequently detected in river and wastewaters, and an enantiomeric enrichment was observed in the effluents of one of the investigated wastewater treatment plants (WWTPs). We reported the contamination of river and wastewaters in Korea by chiral polycyclic musks. The results of this investigation suggest that enantioselective transformation may occur during wastewater treatment.
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34
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Absalan G, Akhond M, Rafatmah E, Alipour Y. Application of gold nanoparticles and l-cysteine double layer on commercial thin-layer chromatography plates as a new substrate for direct resolution of propranolol enantiomers. JPC-J PLANAR CHROMAT 2014. [DOI: 10.1556/jpc.27.2014.6.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Geryk R, Kalíková K, Vozka J, Plecitá D, Schmid MG, Tesařová E. Enantioselective potential of chiral stationary phases based on immobilized polysaccharides in reversed phase mode. J Chromatogr A 2014; 1363:155-61. [DOI: 10.1016/j.chroma.2014.06.040] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/26/2014] [Accepted: 06/12/2014] [Indexed: 02/07/2023]
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36
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Onuchak LA, Stepanova RF, Kudryashov SY, Akopova OB. The Thermodynamic Parameters of Sorption and Selectivity of Chiral Nematic Liquid Crystals of Terephthalidene-bis-2-methylbutyl para-Aminobenzoate. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2014. [DOI: 10.1134/s0036024408020246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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37
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Špánik I, Kačeriaková D, Krupčík J, Armstrong DW. GC Separation of Enantiomers of Alkyl Esters of 2-Bromo Substituted Carboxylic Acids Enantiomers on 6-TBDMS-2,3-di-alkyl- β- and γ-Cyclodextrin Stationary Phases. Chirality 2014; 26:279-85. [DOI: 10.1002/chir.22310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 01/23/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Ivan Špánik
- Institute of Analytical Chemistry; Faculty of Chemical and Food Technology; Slovak University of Technology; Bratislava Slovak Republic
| | - Darina Kačeriaková
- Institute of Analytical Chemistry; Faculty of Chemical and Food Technology; Slovak University of Technology; Bratislava Slovak Republic
| | - Jan Krupčík
- Institute of Analytical Chemistry; Faculty of Chemical and Food Technology; Slovak University of Technology; Bratislava Slovak Republic
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38
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Pažitná A, Špánik I. Enantiomeric distribution of major chiral volatile organic compounds in juniper-flavored distillates. J Sep Sci 2014; 37:398-403. [DOI: 10.1002/jssc.201301151] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 12/02/2013] [Accepted: 12/03/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Alexandra Pažitná
- Institute of Analytical Chemistry; Faculty of Chemical and Food Technology; Slovak University of Technology; Bratislava Slovak Republic
| | - Ivan Špánik
- Institute of Analytical Chemistry; Faculty of Chemical and Food Technology; Slovak University of Technology; Bratislava Slovak Republic
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39
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Awad H, El-Aneed A. Enantioselectivity of mass spectrometry: challenges and promises. MASS SPECTROMETRY REVIEWS 2013; 32:466-483. [PMID: 23775620 DOI: 10.1002/mas.21379] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 03/15/2012] [Accepted: 03/15/2013] [Indexed: 06/02/2023]
Abstract
With the fast growing market of pure enantiomer drugs and bioactive molecules, new chiral-selective analytical tools have been instigated including the use of mass spectrometry (MS). Even though MS is one of the best analytical tools that has efficiently been used in several pharmaceutical and biological applications, traditionally MS is considered as a "chiral-blind" technique. This limitation is due to the MS inability to differentiate between two enantiomers of a chiral molecule based merely on their masses. Several approaches have been explored to assess the potential role of MS in chiral analysis. The first approach depends on the use of MS-hyphenated techniques utilizing fast and sensitive chiral separation tools such as liquid chromatography (LC), gas chromatography (GC), and capillary electrophoresis (CE) coupled to MS detector. More recently, several alternative separation techniques have been evaluated such as supercritical fluid chromatography (SFC) and capillary electrochromatography (CEC); the latter being a hybrid technique that combines the efficiency of CE with the selectivity of LC. The second approach is based on using the MS instrument solely for the chiral recognition. This method depends on the behavioral differences between enantiomers towards a foreign molecule and the ability of MS to monitor such differences. These behavioral differences can be divided into three types: (i) differences in the enantiomeric affinity for association with the chiral selector, (ii) differences of the enantiomeric exchange rate with a foreign reagent, and (iii) differences in the complex MS dissociation behaviors of the enantiomers. Most recently, ion mobility spectrometry was introduced to qualitatively and quantitatively evaluate chiral compounds. This article provides an overview of MS role in chiral analysis by discussing MS based methodologies and presenting the challenges and promises associated with each approach.
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Affiliation(s)
- Hanan Awad
- College of Pharmacy and Nutrition, University of Saskatchewan, Thorvaldson Building, 110 Science Place, Saskatoon, Saskatchewan, Canada, S7N 5C9
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Wang L, McDonald JA, Khan SJ. Enantiomeric analysis of polycyclic musks in water by chiral gas chromatography–tandem mass spectrometry. J Chromatogr A 2013; 1303:66-75. [DOI: 10.1016/j.chroma.2013.06.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 05/22/2013] [Accepted: 06/06/2013] [Indexed: 10/26/2022]
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41
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Enantioseparation of 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate tagged amino acids and other zwitterionic compounds on cinchona-based chiral stationary phases. Anal Bioanal Chem 2013; 405:8105-20. [DOI: 10.1007/s00216-013-7121-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 05/27/2013] [Accepted: 06/05/2013] [Indexed: 11/25/2022]
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42
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Xiang Y, Dunetz JR, Lovdahl M. Chiral separation of amides using supercritical fluid chromatography. J Chromatogr A 2013; 1293:150-8. [DOI: 10.1016/j.chroma.2013.03.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 03/13/2013] [Accepted: 03/18/2013] [Indexed: 11/26/2022]
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43
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Enantioselective separation of amino acids as biomarkers indicating life in extraterrestrial environments. Anal Bioanal Chem 2013; 405:7931-40. [DOI: 10.1007/s00216-013-6915-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 03/04/2013] [Accepted: 03/11/2013] [Indexed: 10/27/2022]
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44
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Efficient immobilization of polysaccharide derivatives as chiral stationary phases via copolymerization with vinyl monomers. Macromol Res 2013. [DOI: 10.1007/bf03218764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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45
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A 3-D open-framework material with intrinsic chiral topology used as a stationary phase in gas chromatography. Anal Bioanal Chem 2013; 405:3407-12. [DOI: 10.1007/s00216-013-6714-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 12/18/2012] [Accepted: 01/09/2013] [Indexed: 11/27/2022]
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46
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Abstract
Chiral recognition phenomena play an important role in nature as well as analytical separation sciences. In separation sciences such as chromatography and capillary electrophoresis, enantiospecific interactions between the enantiomers of an analyte and the chiral selector are required in order to observe enantioseparations. Due to the large structural variety of chiral selectors applied, different mechanisms and structural features contribute to the chiral recognition process. This chapter briefly illustrates the current models of the enantiospecific recognition on the structural basics of various chiral selectors.
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Affiliation(s)
- Gerhard K E Scriba
- Department of Pharmaceutical/Medicinal Chemistry, Friedrich Schiller University Jena, Jena, Germany.
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47
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Yuan R, Ding G. Enantioseparations in capillary electrochromatography using sulfated poly β-cyclodextrin-modified silica-based monolith as stationary phase. Methods Mol Biol 2013; 970:489-503. [PMID: 23283798 DOI: 10.1007/978-1-62703-263-6_31] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
As the most popular chiral selectors, β-cyclodextrin (β-CD) and its derivatives have been widely used in enantiomer separations. Among functionalized β-CDs, sulfated β-CDs are recognized as the most effective chiral additives in capillary electrophoresis (CE) separations. Herein, we describe the preparation of a novel sulfated poly β-CD-modified silica-based monolithic column and its use for the enantioseparation of some chiral compounds in the capillary electrochromatography (CEC) mode.
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Affiliation(s)
- Ruijuan Yuan
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing, China.
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48
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Patil SD, Khandekar N, Kasawar GB, Shaikh K. Enantiomeric separation of a melatonin agonist Ramelteon using amylose-based chiral stationary phase. ARAB J CHEM 2013. [DOI: 10.1016/j.arabjc.2010.09.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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49
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Stockinger S, Spallek MJ, Trapp O. Investigation of novel immobilized 3-(perfluoroalkanoyl)-(1R)-camphorate nickel complexes in enantioselective complexation gas chromatography. J Chromatogr A 2012; 1269:346-51. [PMID: 22909893 DOI: 10.1016/j.chroma.2012.08.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 07/31/2012] [Accepted: 08/02/2012] [Indexed: 10/28/2022]
Abstract
Novel 3-(perfluoroalkanoyl)-(1R)-camphorate nickel complexes immobilized to poly(dimethylsiloxane) phases are presented. Immobilized 3-(perfluoroalkanoyl)-(1R)-camphorate nickel complexes with a trifluoromethyl (CF(3); nickel(II)-bis[(1R,4S)-3-trifluoromethanoyl-10-propylenoxycamphor]-polysiloxane Ni(tfpc)(2)@PS) and a heptafluoropropyl-substituent (C(3)F(7); nickel(II)-bis[(1R,4S)-3-heptafluorobutanoyl-10-propylenoxycamphor]-polysiloxane Ni(hfpc)(2)@PS) were synthesized, characterized and immobilized to polysiloxane. Ni(hfpc)(2)@PS was immobilized with a selector content of 38% and their enantioseparation ability was compared to selector concentrations of 4% and 20%. The influence of the perfluorinated moiety as well as the effect of the selector concentration on enantioseparations were investigated. Based on different functionalized organic compounds the quality of enantioseparation was analyzed and compared.
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Affiliation(s)
- Skrollan Stockinger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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Stephany O, Tisse S, Coadou G, Bouillon JP, Peulon-Agasse V, Cardinael P. Influence of amino acid moiety accessibility on the chiral recognition of cyclodextrin–amino acid mixed selectors in enantioselective gas chromatography. J Chromatogr A 2012; 1270:254-61. [DOI: 10.1016/j.chroma.2012.10.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 10/10/2012] [Accepted: 10/11/2012] [Indexed: 10/27/2022]
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