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Li Y, Zhao H, Ren Y, Qiu M, Zhang H, Gao G, Zheng L, Stavropoulos P, Ai L. Synthesis of Enantiomers of Chiral Ester Derivatives Containing an Amide Group and Their Chiral Recognition by
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H NMR Spectroscopy. ChemistrySelect 2023. [DOI: 10.1002/slct.202204039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Yan‐Lin Li
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Hong‐Mei Zhao
- State Key Laboratory of Information Photonics and Communications, School of Science Beijing University of Posts and Telecommunications Beijing 100876 P. R. China
| | - Yu‐Qing Ren
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Meng Qiu
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Hai‐Tong Zhang
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Guang‐Peng Gao
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Li Zheng
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Pericles Stavropoulos
- Department of Chemistry Missouri University of Science and Technology Rolla, Missouri 65409 USA
| | - Lin Ai
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
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Recchimurzo A, Micheletti C, Uccello-Barretta G, Balzano F. A Dimeric Thiourea CSA for the Enantiodiscrimination of Amino Acid Derivatives by NMR Spectroscopy. J Org Chem 2021; 86:7381-7389. [PMID: 34019407 PMCID: PMC8279476 DOI: 10.1021/acs.joc.1c00340] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Indexed: 01/19/2023]
Abstract
The reaction of benzoyl isothiocyanate with (1R,2R)-1,2-bis(2-hydroxyphenyl)ethylenediamine afforded a new thiourea chiral solvating agent (CSA) with a very high ability to differentiate 1H and 13C NMR signals of simple amino acid derivatives, even at low concentrations. The enantiodiscrimination efficiency was higher with respect to that of the parent monomer, a thiourea derivative of 2-((1R)-1-aminoethyl)phenol, thus putting into light the relevance of the cooperativity between the two molecular portions of the dimer in a cleft conformation stabilized by interchain hydrogen bond interactions. An achiral base additive (DABCO or DMAP) played an active role in the chiral discrimination processes, mediating the interaction between the CSA and the enantiomeric mixtures. The chiral discrimination mechanism was investigated by NMR spectroscopy through the determination of complexation stoichiometries, association constants, and the stereochemistry of the diastereomeric solvates.
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Affiliation(s)
| | | | - Gloria Uccello-Barretta
- Department of Chemistry and
Industrial Chemistry, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
| | - Federica Balzano
- Department of Chemistry and
Industrial Chemistry, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
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Li GW, Wang XJ, Cui DD, Zhang YF, Xu RY, Shi SH, Liu LT, Wang MC, Liu HM, Lei XX. Azaheterocyclic diphenylmethanol chiral solvating agents for the NMR chiral discrimination of alpha-substituted carboxylic acids. RSC Adv 2020; 10:34605-34611. [PMID: 35514411 PMCID: PMC9056771 DOI: 10.1039/d0ra06312f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/24/2020] [Indexed: 12/02/2022] Open
Abstract
A series of small-membered heterocycle probes, so-called azaheterocycle-containing diphenylmethanol chiral solvating agents (CSAs), have been developed for NMR enantiodiscrimination. These chiral sensors were readily synthesized were inexpensive and efficiently used for the chiral analysis of alpha-substituted carboxylic acids. The sensing method was operationally simple and the processing was straightforward. Notably, we propose (S)-aziridinyl diphenylmethanol as a promising CSA, which has excellent chiral discriminating properties and offers multiple detectable possibilities pertaining to the 1H NMR signals of diagnostic split protons (including 25 examples, up to 0.194 ppm, 77.6 Hz). Its ability to detect the molecular recognition of fluorinated carboxylic acids were further investigated, with a good level of discrimination via the 19F NMR spectroscopic analysis. In addition, an accurate enantiomeric excess (ee) analysis of the p-methoxyl-mandelic acid with different optical compositions have been calculated based on the integration of well-separated proton signals. Chiral azaheterocycle-containing diphenylmethanols with multiple hydrogen-bonding sites were described and used as NMR chiral solvating agents (CSAs). Highly resolved NMR spectra can be obtained directly in the NMR tube.![]()
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Affiliation(s)
- Gao-Wei Li
- College of Chemistry and Chemical Engineering and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University Shangqiu 476000 P. R. China .,School of Pharmaceutical Sciences, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Xiao-Juan Wang
- College of Chemistry and Chemical Engineering and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Dan-Dan Cui
- College of Chemistry and Chemical Engineering and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Yu-Fei Zhang
- College of Chemistry and Chemical Engineering and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Rong-Yao Xu
- College of Chemistry and Chemical Engineering and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Shuai-Hua Shi
- College of Chemistry and Chemical Engineering and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Lan-Tao Liu
- College of Chemistry and Chemical Engineering and Henan Engineering Laboratory of Green Synthesis for Pharmaceuticals, Shangqiu Normal University Shangqiu 476000 P. R. China
| | - Min-Can Wang
- School of Pharmaceutical Sciences, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Hong-Min Liu
- School of Pharmaceutical Sciences, Zhengzhou University Zhengzhou 450001 P. R. China
| | - Xin-Xiang Lei
- School of Pharmaceutical Sciences, South-Central University for Nationalities Wuhan 430074 P. R. China
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Rapid and real-time detection of arginine enantiomers by QCM sensor having a Calix[4]arene receptor bearing asymmetric centers. Talanta 2019; 204:172-181. [DOI: 10.1016/j.talanta.2019.05.093] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/17/2019] [Accepted: 05/22/2019] [Indexed: 12/27/2022]
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Selective chiral recognition of alanine enantiomers by chiral calix[4]arene coated quartz crystal microbalance sensors. Anal Bioanal Chem 2019; 411:2675-2685. [DOI: 10.1007/s00216-019-01705-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 01/31/2019] [Accepted: 02/21/2019] [Indexed: 12/30/2022]
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Feng L, Gao G, Zhao H, Zheng L, Wang Y, Stavropoulos P, Ai L, Zhang J. Synthesis of Tripeptide Derivatives with Three Stereogenic Centers and Chiral Recognition Probed by Tetraaza Macrocyclic Chiral Solvating Agents Derived from d-Phenylalanine and (1 S,2 S)-(+)-1,2-Diaminocyclohexane via 1H NMR Spectroscopy. J Org Chem 2018; 83:13874-13887. [PMID: 30346768 PMCID: PMC6499380 DOI: 10.1021/acs.joc.8b02212] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Enantiomers of a series of tripeptide derivatives with three stereogenic centers (±)-G1-G9 have been prepared from d- and l-α-amino acids as guests for chiral recognition by 1H NMR spectroscopy. In the meantime, a family of tetraaza macrocyclic chiral solvating agents (TAMCSAs) 1a-1d has been synthesized from d-phenylalanine and (1 S,2 S)-(+)-1,2-diaminocyclohexane. Discrimination of enantiomers of (±)-G1-G9 was carried out in the presence of TAMCSAs 1a-1d by 1H NMR spectroscopy. The results indicate that enantiomers of (±)-G1-G9 can be effectively discriminated in the presence of TAMCSAs 1a-1d by 1H NMR signals of multiple protons exhibiting nonequivalent chemical shifts (ΔΔδ) up to 0.616 ppm. Furthermore, enantiomers of (±)-G1-G9 were easily assigned by comparing 1H NMR signals of the split corresponding protons with those attributed to a single enantiomer. Different optical purities (ee up to 90%) of G1 were clearly observed and calculated in the presence of TAMCSAs 1a-1d, respectively. Intermolecular hydrogen bonding interactions were demonstrated through theoretical calculations of enantiomers of (±)-G1 with TAMCSA 1a by means of the hybrid functional theory with the standard basis sets of 3-21G of the Gaussian 03 program.
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Affiliation(s)
- Lei Feng
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Guangpeng Gao
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Hongmei Zhao
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Li Zheng
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Yu Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Pericles Stavropoulos
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Lin Ai
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Jiaxin Zhang
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
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Chen Z, Fan H, Yang S, Bian G, Song L. Chiral sensors for determining the absolute configurations of α-amino acid derivatives. Org Biomol Chem 2018; 16:8311-8317. [DOI: 10.1039/c8ob01933a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Two simple 1H NMR tests give the absolute configurations of α-amino acids.
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Affiliation(s)
- Zhongxiang Chen
- The Key Laboratory of Coal to Ethylene Glycol and its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Hongjun Fan
- The State Key Lab of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian
- P. R. China
| | - Shiwei Yang
- The Key Laboratory of Coal to Ethylene Glycol and its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Guangling Bian
- The Key Laboratory of Coal to Ethylene Glycol and its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
| | - Ling Song
- The Key Laboratory of Coal to Ethylene Glycol and its Related Technology
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- P. R. China
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Lv C, Feng L, Zhao H, Wang G, Stavropoulos P, Ai L. Chiral discrimination of α-hydroxy acids and N-Ts-α-amino acids induced by tetraaza macrocyclic chiral solvating agents by using 1H NMR spectroscopy. Org Biomol Chem 2017; 15:1642-1650. [PMID: 28127599 PMCID: PMC5363180 DOI: 10.1039/c6ob02578a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the field of chiral recognition, reported chiral discrimination by 1H NMR spectroscopy has mainly focused on various chiral analytes with a single chiral center, regarded as standard chiral substrates to evaluate the chiral discriminating abilities of a chiral auxiliary. Among them, chiral α-hydroxy acids, α-amino acids and their derivatives are chiral organic molecules involved in a wide variety of biological processes, and also play an important role in the area of preparation of pharmaceuticals, as they are part of the synthetic process in the production of chiral drug intermediates and protein-based drugs. In this paper, several α-hydroxy acids and N-Ts-α-amino acids were used to evaluate the chiral discriminating abilities of tetraaza macrocyclic chiral solvating agents (TAMCSAs) 1a-1d by 1H NMR spectroscopy. The results indicate that α-hydroxy acids and N-Ts-α-amino acids were successfully discriminated in the presence of TAMCSAs 1a-1d by 1H NMR spectroscopy in most cases. The enantiomers of the α-hydroxy acids and N-Ts-α-amino acids were assigned based on the change of integration of the 1H NMR signals of the corresponding protons. The enantiomeric excesses (ee) of N-Ts-α-amino acids 11 with different optical compositions were calculated based on the integration of the 1H NMR signals of the CH3 protons (Ts group) of the enantiomers of (R)- and (S)-11 in the presence of TAMCSA 1b. At the same time, the possible chiral discriminating behaviors have been discussed by means of the Job plots of (±)-2 with TAMCSAs 1b and proposed theoretical models of the enantiomers of 2 and 6 with TAMCSA 1a, respectively.
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Affiliation(s)
- Caixia Lv
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
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Fang L, Lv C, Wang G, Feng L, Stavropoulos P, Gao G, Ai L, Zhang J. Discrimination of Enantiomers of Dipeptide Derivatives with Two Chiral Centers by Tetraaza Macrocyclic Chiral Solvating Agents Using 1H NMR Spectroscopy. Org Chem Front 2016; 3:1716-1724. [PMID: 28191319 PMCID: PMC5300753 DOI: 10.1039/c6qo00521g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
1H NMR spectroscopy is often used to discriminate enantiomers of chiral analytes and determine their enantiomeric excess (ee) by various chiral auxiliaries. In reported research, these studies were mainly focused on chiral discriminantion of chiral analytes with only one chiral center. However, many chiral compounds possessing two or more chiral centers are often found in natural products, chiral drugs, products of asymmetric synthesis and biological systems. Therefore, it is necessary to investigate their chiral discrimination by effective chiral auxiliaries using 1H NMR spectroscopy. In this paper, a new class of tetraaza macrocyclic chiral solvating agents (TAMCSAs) with two amide (CONH), two amino (NH) and two phenolic hydroxyl (PhOH) groups has been designed and synthsized for chiral discrimination towards dipeptide derivatives with two chiral centers. These dipeptide derivatives are important chiral species because some of them are used as clinical drugs and special dietary supplements for treatment of human diseases, such as L-alanyl-L-glutamine and aspartame. The results show that these TAMCSAs have excellent chiral discriminating properties and offer multiple detection possibilities pertaining to 1H NMR signals of diagnostic split protons. The nonequivalent chemical shifts (up to 0.486 ppm) of various types of protons of these dipeptide derivatives were evaluated with the assistance of well-resolved 1H NMR signals in most cases. In addition, enantiomeric excesses (ee) of the dipeptide derivatives with different optical compositions have been calculated based on integration of well-separeted proton signals. At the same time, the possible chiral discriminating behaviors have been discussed by means of Job plots, ESI mass spectra and a proposed theoretical model of (±)-G1 with TAMCSA 1c. Additionally, the association constants of enantiomers of (±)-G5 with TAMCSA 1a were calculated by employing the nonlinear curve-fitting method.
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Affiliation(s)
- Lixia Fang
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Caixia Lv
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Guo Wang
- Department of Chemistry, Capital Normal University, Beijing 10048, P. R. China
| | - Lei Feng
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Pericles Stavropoulos
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, USA
| | - Guangpeng Gao
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Lin Ai
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Jiaxin Zhang
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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Huang H, Bian G, Zong H, Wang Y, Yang S, Yue H, Song L, Fan H. Chiral Sensor for Enantiodiscrimination of Varied Acids. Org Lett 2016; 18:2524-7. [DOI: 10.1021/acs.orglett.6b00088] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Huayin Huang
- The
Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Guangling Bian
- The
Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Hua Zong
- The
Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yabai Wang
- The
Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Shiwei Yang
- The
Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Huifeng Yue
- The
Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Ling Song
- The
Key Laboratory of Coal to Ethylene Glycol and Its Related Technology,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Hongjun Fan
- The
State Key Lab of Molecular Reaction Dynamics, Dalian Institute of
Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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