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Barreiro JC, Tiritan ME, Cass QB. Challenges and innovations in chiral drugs in an environmental and bioanalysis perspective. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116326] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Ultra-performance chromatographic methods for enantioseparation of liquid crystals based on lactic acid. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.02.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Xiong F, Yang BB, Zhang J, Li L. Enantioseparation, Stereochemical Assignment and Chiral Recognition Mechanism of Sulfoxide-Containing Drugs. Molecules 2018; 23:molecules23102680. [PMID: 30340337 PMCID: PMC6222453 DOI: 10.3390/molecules23102680] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 10/04/2018] [Accepted: 10/15/2018] [Indexed: 01/11/2023] Open
Abstract
The distinct pharmacodynamic and pharmacokinetic properties of enantiopure sulfoxide drugs have stimulated us to systematically investigate their chiral separation, stereochemical assignment, and chiral recognition mechanism. Herein, four clinically widely-used sulfoxide drugs were chosen and optically resolved on various chiral stationary phases (CSPs). Theoretical simulations including electronic circular dichroism (ECD) calculation and molecular docking were adopted to assign the stereochemistry and reveal the underlying chiral recognition mechanism. Our results showed that the sequence of calculated mean binding energies between each pair of enantiomers and CSP matched exactly with experimentally observed enantiomeric elution order (EEO). It was also found that the length of hydrogen bond might contribute dominantly the interaction between two enantiomers and CSP. We hope our study could provide a fresh perspective to explore the stereochemistry and chiral recognition mechanism of chiral drugs.
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Affiliation(s)
- Fei Xiong
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Bei-Bei Yang
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Jie Zhang
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Li Li
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
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N L Batista A, M Dos Santos F, Batista JM, Cass QB. Enantiomeric Mixtures in Natural Product Chemistry: Separation and Absolute Configuration Assignment. Molecules 2018; 23:molecules23020492. [PMID: 29473869 PMCID: PMC6017502 DOI: 10.3390/molecules23020492] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 01/23/2018] [Accepted: 02/21/2018] [Indexed: 01/13/2023] Open
Abstract
Chiral natural product molecules are generally assumed to be biosynthesized in an enantiomerically pure or enriched fashion. Nevertheless, a significant amount of racemates or enantiomerically enriched mixtures has been reported from natural sources. This number is estimated to be even larger since the enantiomeric purity of secondary metabolites is rarely checked in the natural product isolation pipeline. This latter fact may have drastic effects on the evaluation of the biological activity of chiral natural products. A second bottleneck is the determination of their absolute configurations. Despite the widespread use of optical rotation and electronic circular dichroism, most of the stereochemical assignments are based on empirical correlations with similar compounds reported in the literature. As an alternative, the combination of vibrational circular dichroism and quantum chemical calculations has emerged as a powerful and reliable tool for both conformational and configurational analysis of natural products, even for those lacking UV-Vis chromophores. In this review, we aim to provide the reader with a critical overview of the occurrence of enantiomeric mixtures of secondary metabolites in nature as well the best practices for their detection, enantioselective separation using liquid chromatography, and determination of absolute configuration by means of vibrational circular dichroism and density functional theory calculations.
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Affiliation(s)
- Andrea N L Batista
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
| | - Fernando M Dos Santos
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
| | - João M Batista
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
- Institute of Science and Technology, Federal University of São Paulo-UNIFESP, R. Talim 330, São José dos Campos, SP 12231-280, Brazil.
| | - Quezia B Cass
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
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Silva LMA, Alves Filho EG, Simpson AJ, Monteiro MR, Cabral E, Ifa D, Venâncio T. DESI-MS imaging and NMR spectroscopy to investigate the influence of biodiesel in the structure of commercial rubbers. Talanta 2017; 173:22-27. [PMID: 28602187 DOI: 10.1016/j.talanta.2017.05.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 05/23/2017] [Accepted: 05/23/2017] [Indexed: 10/19/2022]
Abstract
Biodiesel has been introduced as an energetic matrix in several countries around the world. However, the affinity of biodiesel with the components of petrodiesel engines is a growing concern. In order to obtain information regarding the effect of biodiesel on the rubber structure, nuclear magnetic resonance technics under a new technology named as comprehensive multiphase (CMP NMR) and the imaging through desorption electrospray ionization mass spectrometry (DESI-MS imaging) were used. The 1H CMP-DOSY NMR showed the entrapped fuel into the rubber cavities, which the higher constraint caused by the rubber structure is related to the smaller diffusion coefficient. The less affected type of rubber by biodiesel was ethylene-propylene-diene monomer (EPDM), and the most affected was synthetic rubber nitrile (NBR). The 13C CMP MAS-SPE experiments also confirmed that the internal region of EPDM was less accessible to the biodiesel molecules (no fuels detected) while other rubbers were more susceptible to the penetration of the fuel. DESI-MS imaging revealed for the first time the topography of the rubbers exposed to fuels. The biodiesel molecules entrapped at the EPDM and NBR pores were in oxidized form, which might degrade the rubber structure at long exposure time. The employed technics enabled the study of dynamic and molecular structure of the mixing complex multiphase. The DOSY under CMP used in this study could prove helpful in assessing the interactions throughout all physical phases (liquid, solid, and gel or semi-solid) by observing swellability caused by the fuel in the rubber. In addition, the DESI-MS was especially valuable to detect the degradation products of biodiesel entangled at the rubber structure. In our knowledge, this was the first report in which chemical changes of commercial rubbers induced by biodiesel and petrodiesel were investigated by means of DESI-MS and DOSY NMR.
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Affiliation(s)
- Lorena M A Silva
- Embrapa Tropical Agroindustry, Fortaleza CE 60511-110, Brazil; Department of Chemistry, Federal University of São Carlos, SP, Brazil.
| | | | | | - Marcos R Monteiro
- Centre for Development and Characterization of Materials, Department of Materials Engineering, Federal University of São Carlos, SP, Brazil
| | - Elaine Cabral
- Chemical, Biological and Agricultural Pluridisciplinary Research Center, Campinas State University, Campinas, SP, Brazil
| | - Demian Ifa
- Centre for Research in Mass Spectrometry, Department of Chemistry, York University, Toronto, ON, Canada
| | - Tiago Venâncio
- Department of Chemistry, Federal University of São Carlos, SP, Brazil
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Wang L, Chai Y, Zhu W, Pan Y, Sun C, Zeng S. Doubly charged trimeric cluster ions: effective in mutual chiral recognition of tadalafil and three proton pump inhibitors. Analyst 2017; 142:745-751. [DOI: 10.1039/c6an02666d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mutual chiral recognition of four stereoisomers of tadalafil and three pairs of enantiomers of proton pump inhibitors (PPIs), as well as enantiomers excess analysis are achieved on the basis of the competitive fragmentation of doubly charged trimeric NiIIcluster ion.
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Affiliation(s)
- Lu Wang
- Institute of Drug Metabolism and Analysis
- College of Pharmaceutical Sciences
- Hangzhou 310058
- PR China
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research
| | - Yunfeng Chai
- Institute of Drug Metabolism and Analysis
- College of Pharmaceutical Sciences
- Hangzhou 310058
- PR China
| | - Wenquan Zhu
- Department of Quality Control
- Zhejiang Huahai Pharmaceutical Ltd
- Taizhou
- China
| | - Yuanjiang Pan
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- PR China
| | - Cuirong Sun
- Institute of Drug Metabolism and Analysis
- College of Pharmaceutical Sciences
- Hangzhou 310058
- PR China
| | - Su Zeng
- Institute of Drug Metabolism and Analysis
- College of Pharmaceutical Sciences
- Hangzhou 310058
- PR China
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research
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Barreiro JC, Paixão MW, Lourenço TC, Cass QB, Venâncio T. A High-Resolution Magic Angle Spinning NMR Study of the Enantiodiscrimination of 3,4-Methylenedioxymethamphetamine (MDMA) by an Immobilized Polysaccharide-Based Chiral Phase. PLoS One 2016; 11:e0162892. [PMID: 27668862 PMCID: PMC5036802 DOI: 10.1371/journal.pone.0162892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 08/30/2016] [Indexed: 11/18/2022] Open
Abstract
This paper reports the investigation of the chiral interaction between 3,4-methylenedioxy-methamphetamine (MDMA) enantiomers and an immobilized polysaccharide-based chiral phase. For that, suspended-state high-resolution magic angle spinning nuclear magnetic resonance spectroscopy (1H HR-MAS NMR) was used. 1H HR-MAS longitudinal relaxation time and Saturation Transfer Difference (STD NMR) titration experiments were carried out yielding information at the molecular level of the transient diastereoisomeric complexes of MDMA enantiomers and the chiral stationary phase. The interaction of the enantiomers takes place through the aromatic moiety of MDMA and the aromatic group of the chiral selector by π-π stacking for both enantiomers; however, a stronger interaction was observed for the (R)-enantiomer, which is the second one to elute at the chromatographic conditions.
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Affiliation(s)
- Juliana C. Barreiro
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
- * E-mail:
| | - Márcio W. Paixão
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
| | | | - Quezia B. Cass
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
| | - Tiago Venâncio
- Department of Chemistry, Federal University of São Carlos, São Paulo, Brazil
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Bao L, Chen X, Yang B, Tao Y, Kong Y. Construction of Electrochemical Chiral Interfaces with Integrated Polysaccharides via Amidation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21710-21720. [PMID: 27487166 DOI: 10.1021/acsami.6b07620] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Polysaccharides of sodium carboxymethyl cellulose (CMC) and chitosan (CS) were integrated together via amidation reactions between the carboxyl groups on sodium CMC and the amino groups on CS. Compared with individual sodium CMC and CS, the integrated polysaccharides with a mass ratio of 1:1, CMC-CS (1:1), exhibited a three-dimensional (3D) porous network structure, resulting in a significantly enhanced hydrophility due to the exposed polar functional groups in the CMC-CS (1:1). Chiral interfaces were constructed with the integrated polysaccharides and used for electrochemical enantiorecognition of tryptophan (Trp) isomers. The CMC-CS (1:1) chiral interfaces exhibited excellent selectivity toward the Trp isomers owing to the highly hydrophilic feature of CMC-CS (1:1) and the different steric hindrance during the formation of H bonds between Trp isomers and CMC-CS (1:1). Also, the optimization in the preparation of integrated polysaccharides such as mass ratio and combination mode (amidation or electrostatic interactions) was investigated. The CMC-CS (1:1) presented the ability of determining the percentage of d-Trp in racemic mixtures, and thus, the proposed electrochemical chiral interfaces could be regarded as a potential biosensing platform for enantiorecognition of chiral compounds.
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Affiliation(s)
- Liping Bao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University , Changzhou 213164, China
| | - Xiaohui Chen
- School of Chemistry and Material Engineering, Changzhou Vocational Institute of Engineering , Changzhou 213164, China
| | - Baozhu Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University , Changzhou 213164, China
| | - Yongxin Tao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University , Changzhou 213164, China
| | - Yong Kong
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University , Changzhou 213164, China
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Bao L, Tao Y, Gu X, Yang B, Deng L, Kong Y. Potato starch as a highly enantioselective system for temperature-dependent electrochemical recognition of tryptophan isomers. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.01.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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