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Ma Z, Shang P, Liu D, Nie Y, Liu Y, Guo X, Wei B, Bai L, Qiao X. Preparation and chromatographic performance of chiral peptide-based stationary phases for enantiomeric separation. Chirality 2023; 35:636-644. [PMID: 36951148 DOI: 10.1002/chir.23564] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 03/24/2023]
Abstract
This study presents the development of three new chiral stationary phases. They are based on silica modified with peptides containing phenylalanine and proline. Successful analyses and characterizations were conducted using Fourier transform infrared spectra, elemental analysis, and thermogravimetric analysis. After this, the enantioselective performance of the three chiral peptide-based columns was evaluated. The evaluation used 11 racemic compounds under normal-phase high performance liquid chromatography mode. Optimized enantiomeric separation conditions were established. Under these conditions, the enantiomers of flurbiprofen and naproxen were successfully separated on CSP-1 column: the separation factor of these was 1.27 and 1.21, respectively. In addition, the reproducibility of the CSP-1 column was also investigated. The results of the investigation illustrated that the stationary phases have good reproducibility (RSD = 0.73%, n = 5).
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Affiliation(s)
- Zhengyue Ma
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Panpan Shang
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Delu Liu
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Yangyang Nie
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Yanli Liu
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Xinyuan Guo
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Benben Wei
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Ligai Bai
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
| | - Xiaoqiang Qiao
- College of Pharmaceutical Sciences, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding, China
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2
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Takeuchi J, Takeda K. Theoretical possibility of the chiral recognition of amino acids by a peptide nanoring. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.08.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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3
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Shen H, Du G, Liu K, Ye L, Xie S, Jiang L. Synthesis and evaluation of pseudopeptide chiral stationary phases for enantioselective resolution. J Chromatogr A 2017; 1521:53-62. [PMID: 28951050 DOI: 10.1016/j.chroma.2017.08.082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 08/27/2017] [Accepted: 08/30/2017] [Indexed: 10/18/2022]
Abstract
Poly(2-oxazoline)s are regarded as bioinspired polymers due to their structural relation to polypeptides. In this work, a new kind of poly(2-oxazoline)s containing dipeptide segments in the side chains was synthesized through a bottom-up protocol, which involves ring-opening copolymerization of 2-(N-Boc-l-2-pyrrolidinyl)-2-oxazoline (PyOXBoc) with 2-(3-butenyl)-2-oxazoline (BuOX) followed by deprotection and amide coupling with N-protected L-proline. The resulting vinyl-functionalized polymers were subsequently immobilized onto mercaptopropylated silica bead matrices by means of thio-click chemistry and their potential as the chiral stationary phase (CSP) for high-performance liquid chromatography was preliminarily evaluated with a series of structurally different racemates. The results showed that this class of pseudopeptide CSPs is particularly adapted to the enantiomeric separation of 1,1'-bi-2-naphthol and acyloin compounds (such as benzoin) under normal-phase conditions. Moreover, an increase in the length of polymer main chains is beneficial to the enhancement of both enantioselectivity and resolution ability. The chiral discrimination of analytes by the polymeric selectors stems primarily from hydrogen bonding and π-π interactions as well as steric hindrance.
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Affiliation(s)
- Huifang Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Ganhong Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Keyuan Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Long Ye
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Shoulei Xie
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liming Jiang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization; Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
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Fernandes C, Phyo YZ, Silva AS, Tiritan ME, Kijjoa A, Pinto MM. Chiral Stationary Phases Based on Small Molecules: An Update of the Last 17 Years. SEPARATION AND PURIFICATION REVIEWS 2017. [DOI: 10.1080/15422119.2017.1326939] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Carla Fernandes
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Matosinhos, Portugal
| | - Ye’ Zaw Phyo
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Ana Sofia Silva
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Maria Elizabeth Tiritan
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Matosinhos, Portugal
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde (IINFACTS), Gandra PRD, Portugal
| | - Anake Kijjoa
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Matosinhos, Portugal
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Madalena M.M. Pinto
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Matosinhos, Portugal
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5
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Ashtari M, Cann N. The docking of chiral analytes on proline-based chiral stationary phases: A molecular dynamics study of selectivity. J Chromatogr A 2015. [DOI: 10.1016/j.chroma.2015.07.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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6
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Novell A, Méndez A, Minguillón C. Effects of supercritical fluid chromatography conditions on enantioselectivity and performance of polyproline-derived chiral stationary phases. J Chromatogr A 2015; 1403:138-43. [DOI: 10.1016/j.chroma.2015.05.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 05/11/2015] [Accepted: 05/12/2015] [Indexed: 10/23/2022]
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7
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Novell A, Minguillón C. Monolithic silica columns with covalently attached octaproline chiral selector. Dependence of performance on derivatization degree and comparison with a bead-based analogue. J Chromatogr A 2015; 1384:124-32. [DOI: 10.1016/j.chroma.2015.01.060] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 01/16/2015] [Accepted: 01/19/2015] [Indexed: 10/24/2022]
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8
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Octaproline, a conformationally flexible chiral selector in liquid chromatographic enantioseparation. J Chromatogr A 2014; 1363:109-18. [DOI: 10.1016/j.chroma.2014.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 05/02/2014] [Accepted: 05/06/2014] [Indexed: 11/23/2022]
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9
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Sancho R, Novell A, Svec F, Minguillón C. Monolithic silica columns functionalized with substituted polyproline-derived chiral selectors as chiral stationary phases for high-performance liquid chromatography. J Sep Sci 2014; 37:2805-13. [DOI: 10.1002/jssc.201400640] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 07/25/2014] [Accepted: 07/25/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Raquel Sancho
- Food and Nutrition Torribera Campus; University of Barcelona; Santa Coloma de Gramenet Barcelona Spain
- Laboratori de Química Farmacèutica, Faculty of Pharmacy; University of Barcelona; Barcelona Spain
| | - Arnau Novell
- Food and Nutrition Torribera Campus; University of Barcelona; Santa Coloma de Gramenet Barcelona Spain
- Laboratori de Química Farmacèutica, Faculty of Pharmacy; University of Barcelona; Barcelona Spain
| | - Frantisek Svec
- Molecular Foundry; Lawrence Berkeley National Laboratory; Berkeley CA USA
| | - Cristina Minguillón
- Food and Nutrition Torribera Campus; University of Barcelona; Santa Coloma de Gramenet Barcelona Spain
- Laboratori de Química Farmacèutica, Faculty of Pharmacy; University of Barcelona; Barcelona Spain
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10
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Wu H, Song G, Wang D, Yu H, Ke Y, Liang X. Study of stereomeric peptoid chiral stationary phases containing different chiral side chains. J Chromatogr A 2013; 1298:152-6. [DOI: 10.1016/j.chroma.2013.05.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/15/2013] [Accepted: 05/15/2013] [Indexed: 10/26/2022]
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11
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Poly-proline-based chiral stationary phases: A molecular dynamics study of triproline, tetraproline, pentaproline and hexaproline interfaces. J Chromatogr A 2012; 1265:70-87. [DOI: 10.1016/j.chroma.2012.09.075] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 09/14/2012] [Accepted: 09/17/2012] [Indexed: 11/22/2022]
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12
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Wu H, Su X, Li K, Yu H, Ke Y, Liang X. Improvement of peptoid chiral stationary phases by modifying the terminal group of selector. J Chromatogr A 2012; 1265:181-5. [DOI: 10.1016/j.chroma.2012.09.081] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 09/20/2012] [Accepted: 09/24/2012] [Indexed: 10/27/2022]
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13
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Dai Z, Ye G, Pittman CU, Li T. Solution-phase synthesis and evaluation of tetraproline chiral stationary phases. Chirality 2012; 24:329-38. [DOI: 10.1002/chir.22001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 10/31/2011] [Indexed: 11/07/2022]
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14
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Cavazzini A, Pasti L, Massi A, Marchetti N, Dondi F. Recent applications in chiral high performance liquid chromatography: A review. Anal Chim Acta 2011; 706:205-22. [DOI: 10.1016/j.aca.2011.08.038] [Citation(s) in RCA: 203] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/08/2011] [Accepted: 08/25/2011] [Indexed: 01/17/2023]
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15
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Lao W, Gan J. Enantioselective degradation of warfarin in soils. Chirality 2011; 24:54-9. [DOI: 10.1002/chir.21023] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Accepted: 08/10/2011] [Indexed: 11/09/2022]
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16
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Ashtari M, Cann N. Proline-based chiral stationary phases: A molecular dynamics study of the interfacial structure. J Chromatogr A 2011; 1218:6331-47. [DOI: 10.1016/j.chroma.2011.06.096] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 06/24/2011] [Accepted: 06/27/2011] [Indexed: 10/18/2022]
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17
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Steric effects on the enantiodiscrimination of diproline chiral stationary phases in the resolution of racemic compounds. J Chromatogr A 2011; 1218:5498-503. [PMID: 21741656 DOI: 10.1016/j.chroma.2011.06.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 06/01/2011] [Accepted: 06/09/2011] [Indexed: 11/21/2022]
Abstract
Eight diproline chiral stationary phases with different end-capping groups were prepared and evaluated for the enantio-selective resolution of 41 racemic analytes. The end-capping group on the N-terminal of the peptide proved to be important as the chiral separation efficiency was decreased significantly without it. In general, increasing steric bulkiness near the N-terminal of diproline increases the enantioselectivity. Electronic structures of the end-capping groups are also important. One stationary phase with an adamantanecarbonyl capping group was found to provide both higher average separation and resolution factors than our previous leader. Three other stationary phases with 2-methylpropanoyl, cyclopropanecarbonyl and cyclobutanecarbonyl end capping groups were found to provide comparable average separation factor but higher resolution factors than our previous leader.
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18
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Lao W, Gan J. Temperature effects on a doubly tethered diproline chiral stationary phase: Hold-up volume, enantioselectivity and robustness. J Sep Sci 2010; 33:3052-9. [DOI: 10.1002/jssc.201000210] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Loukotková L, Tesařová E, Bosáková Z, Repko P, Armstrong DW. Comparison of HPLC enantioseparation of substituted binaphthyls on CD-, polysaccharide- and synthetic polymer-based chiral stationary phases. J Sep Sci 2010; 33:1244-54. [DOI: 10.1002/jssc.200900796] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Lao W, Gan J. Doubly tethered tertiary amide linked and ionically bonded diproline chiral stationary phases. J Sep Sci 2009; 32:2359-68. [DOI: 10.1002/jssc.200900112] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Lao W, Gan J. Evaluation of triproline and tri-α-methylproline chiral stationary phases. J Chromatogr A 2009; 1216:5020-9. [DOI: 10.1016/j.chroma.2009.04.063] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2009] [Revised: 04/17/2009] [Accepted: 04/21/2009] [Indexed: 10/20/2022]
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22
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Loukotková L, Rambousková M, Bosáková Z, Tesarová E. Cellulose tris(3,5-dimethylphenylcarbamate)-based chiral stationary phases as effective tools for enantioselective HPLC separation of structurally different disubstituted binaphthyls. Chirality 2008; 20:900-9. [PMID: 18553496 DOI: 10.1002/chir.20585] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Cellulose tris(3,5-dimethylphenylcarbamate)-based chiral stationary phases (CSPs) were used for a study of the HPLC retention and enantioseparation behavior of 2,2'-disubstituted or 3,2,2'-trisubstituted 1,1'-binaphthyls and 8,3'-disubstituted 1,2'-binaphthyls. The effects of the mobile phase composition in normal- (NP) and reversed-phase (RP) separation modes were investigated. The NP mobile phases contained n-hexane and propane-2-ol at various volume ratios, the RP ones were obtained by mixing acetonitrile with water or a 20 mM phosphate buffer of pH 6.0 or 3.0. The RP separation mode has been found more suitable for enantioresolution of most of the analytes. The best enantioseparation of 2,2'-diacetyl-1,1'-binaphthyl, 2-hydroxy-2'-(phenylamino)-1,1'-binaphthyl-3-carboxylic acid and 2-amino-2'-hydroxy-1,1'-binaphthyl-3-carboxylic acid was obtained in the mobile phase of ACN/20 mM phosphate buffer, pH 3.0, 40/60 (v/v), whereas N-(2'-hydroxy-1,1'-binaphthyl-2-yl)acetamide, N-(3'-methoxy-1,2'-binaphthyl-8-yl)acetamide, and N-(3'-hydroxy-1,2'-binaphthyl-8-yl)acetamide yielded better results in ACN/water at the same v/v ratio. The analyte-CSP interaction mechanism was found to be temperature independent but the enantioresolution improved at an elevated temperature. The mechanism of the enantioselective discrimination is discussed on the basis of the thermodynamic parameters obtained. Semi-preparative separation conditions have been proposed for 2-amino-2'-hydroxy-1,1'-binaphthyl-3-carboxylic acid, N-(3'-methoxy-1,2'-binaphthyl-8-yl)acetamide, and N-(3'-hydroxy-1,2'-binaphthyl-8-yl)acetamide.
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Affiliation(s)
- Lucie Loukotková
- Faculty of Science, Department of Analytical Chemistry, Charles University in Prague, 128 43 Prague 2, Czech Republic
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Enantiomeric separation of alcohols and amines on a proline chiral stationary phase by gas chromatography. J Chromatogr A 2008; 1191:199-204. [PMID: 18262198 DOI: 10.1016/j.chroma.2008.01.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Revised: 01/16/2008] [Accepted: 01/18/2008] [Indexed: 11/20/2022]
Abstract
A new chiral stationary phase for gas chromatography was prepared by covalently attaching a diproline chiral selector that has proven to be effective in liquid chromatography to a methylhydrosiloxane-dimethylsiloxane copolymer. With this new chiral stationary phase for GC, racemic aromatic alcohols could be resolved without derivatization. Racemic aromatic and aliphatic amines could also be resolved after derivatization of the amino groups with trifluoroacetic anhydride or isopropyl isocyanate. On this stationary phase, the isopropyl isocyanate derivatives of amines showed higher enantioselectivity than the trifluoroacetic anhydride derivatives. In both the enantiomeric separations of alcohols and derivatized amines, the aromatic racemic analytes showed higher enantioselectivities than their aliphatic analogs. Some of the alpha-amino and alpha-hydroxy aromatic acids could also be separated after derivatization to N-trifluoroacetyl methyl esters for amino acids or O-trifluoroacetyl methyl esters for hydroxyl acids.
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24
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Bao Y, Huang J, Li T, Armstrong DW. Evaluation of Pentaproline-Based Chiral Stationary Phase by LC. Chromatographia 2007. [DOI: 10.1365/s10337-007-0438-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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25
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Zhang P, Polavarapu PL, Huang J, Li T. Spectroscopic rationalization of the separation abilities of decaproline chiral selector in dichloromethane–isopropanol solvent mixture. Chirality 2006; 19:99-105. [PMID: 17096376 DOI: 10.1002/chir.20350] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A chiral column, with decaproline as the chiral selector, has broad chiral selectivity. To understand the separation mechanism of this chiral column, multiple spectroscopic techniques, including optical rotation, electronic circular dichroism, infrared absorption and vibrational circular dichroism, have been used here to study the conformation of the decaproline oligomer in isopropanol(IPA)/dichloromethane(DCM) mixtures. These studies indicate that decaproline oligomer adopts polyproline II conformation in IPA/DCM solvent system (0% IPA approximately 100% IPA). Hydrogen bonding interactions between C=O groups of decaproline and IPA molecules increase as the content of IPA in the solvent mixture increases up to 60% and become less significant from then onwards. These spectroscopic observations are found to have a good correlation with the enantiomeric separation of racemic 2,2,2-trifluoro-1-[10-(2,2,2-trifluoro-1-hydroxy-ethyl-anthracen-9-yl]-ethanol by the decaproline column.
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Affiliation(s)
- Peng Zhang
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
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