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Kwahk EJ, Nguyen NH, Jang S, Shin S, Kim H. Chiral Recognition and Resolution of Phosphoric Acids Using Octahedral Cobalt Complexes. Org Lett 2023; 25:2036-2040. [PMID: 36926952 DOI: 10.1021/acs.orglett.3c00384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Determining the chirality of phosphoric acids can be a challenging task. In this study, we present a novel approach for the chiral recognition of phosphates using cationic octahedral cobalt complexes. By utilizing 31P NMR spectroscopy, we are able to accurately measure the enantiopurities of chiral phosphoric acids after forming ion pairs with the cobalt complexes. We have successfully applied this method to a variety of chiral phosphoric acids derived from BINOL, H8-BINOL, SPINOL, VAPOL, and VANOL compounds, as well as ATP, and were able to efficiently resolve them in 31P{1H} NMR spectra. Furthermore, we were able to achieve an optical resolution of a phosphoric acid with an enantiomeric excess of greater than 99%.
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Affiliation(s)
- Eun-Jeong Kwahk
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Nguyen H Nguyen
- Department of Chemistry, Hanyang University, Seoul 04763, Korea
| | - Sumin Jang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Seunghoon Shin
- Department of Chemistry, Hanyang University, Seoul 04763, Korea
| | - Hyunwoo Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
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2
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Sokolova A, Kovaleva KS, Kuranov SO, Bormotov NI, Borisevich SS, Yarovaya OI, Zhukovets A, Serova OA, Nawrozkij MB, Vernigora AA, Davidenko AV, Khamitov EM, Peshkov RY, Shishkina LN, Maksuytov RA, Salakhutdinov NF. Design, synthesis and biological evaluation of novel (+)-сamphor and (-)-fenchone based derivatives as potent orthopoxviruses inhibitors. ChemMedChem 2022; 17:e202100771. [PMID: 35388614 DOI: 10.1002/cmdc.202100771] [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: 12/22/2021] [Revised: 03/31/2022] [Indexed: 11/10/2022]
Abstract
In this work, a library of (+)-camphor and (-)-fenchone based N-acylhydrazones, amides, and esters, including para-substituted aromatic/hetaromatic/cyclohexane ring was synthesized, with potent orthopoxvirus inhibitors identified among them. Investigations of the structure-activity relationship revealed the significance of the substituent at the para-position of the aromatic ring. Also, the nature of the linker between a hydrophobic moiety and aromatic ring was clarified. Derivatives with p-Cl, p-Br, p-CF3, and p-NO2 substituted aromatic ring and derivatives with cyclohexane ring showed the highest antiviral activity against vaccinia virus, cowpox, and ectromelia virus. The hydrazone and the amide group were more favourable as a linker for antiviral activity than the ester group. Compounds 3b and 7e with high antiviral activity were examined using the time-of-addition assay and molecular docking study. The results revealed the tested compounds to inhibit the late processes of the orthopoxvirus replication cycle and the p37 viral protein to be a possible biological target.
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Affiliation(s)
- Anastasiya Sokolova
- Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, Medicinal Chemistry, 9, Lavrent'ev avenue, 630090, Novosibirsk, RUSSIAN FEDERATION
| | - Kseniya S Kovaleva
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, RUSSIAN FEDERATION
| | - Sergey O Kuranov
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, SAINT KITTS AND NEVIS
| | - Nikolay I Bormotov
- VECTOR: State Research Center of Virology and Biotechnology, Prevention and Tretment of Highly Dangerous Infection, RUSSIAN FEDERATION
| | - Sophia S Borisevich
- Ufa Institute of Chemistry RAS: FGBUN Ufimskij Institut himii Rossijskoj akademii nauk, RAS, RUSSIAN FEDERATION
| | - Olga I Yarovaya
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, RUSSIAN FEDERATION
| | - Anastasiya Zhukovets
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, SB RAS, RUSSIAN FEDERATION
| | - Olga A Serova
- VECTOR: State Research Center of Virology and Biotechnology, Prevention and Treatment of Highly Dengerous Infection, RUSSIAN FEDERATION
| | - Maxim B Nawrozkij
- Volgograd State Technical University: Volgogradskij gosudarstvennyj tehniceskij universitet, Chemistry, RUSSIAN FEDERATION
| | - Andrey A Vernigora
- Volgograd State Technical University: Volgogradskij gosudarstvennyj tehniceskij universitet, Chemistry, RUSSIAN FEDERATION
| | - Andrey V Davidenko
- Volgograd State Technical University: Volgogradskij gosudarstvennyj tehniceskij universitet, Chemistry, RUSSIAN FEDERATION
| | - Eduard M Khamitov
- Ufa Institute of Chemistry RAS: FGBUN Ufimskij Institut himii Rossijskoj akademii nauk, Chemistry, RUSSIAN FEDERATION
| | - Roman Yu Peshkov
- Novosibirsk National Research State University: Novosibirskij gosudarstvennyj universitet, Natural Science, RUSSIAN FEDERATION
| | - Larisa N Shishkina
- VECTOR: State Research Center of Virology and Biotechnology, Prevention and Tretment of Highly Dangerous Infections, RUSSIAN FEDERATION
| | - Rinat A Maksuytov
- VECTOR: State Research Center of Virology and Biotechnology, Rospotrebnadzor, RUSSIAN FEDERATION
| | - Nariman F Salakhutdinov
- Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS: Novosibirskij institut organiceskoj himii imeni N N Vorozcova SO RAN, Medicinal Chemistry, RUSSIAN FEDERATION
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3
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Raval HB, Bedekar AV. Synthesis And Study of Fluorine Containing Kagan's Amides as Chiral Solvating Agents For Enantiodiscrimination of Acids by NMR Spectroscopy. ChemistrySelect 2020. [DOI: 10.1002/slct.202000779] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Hiten B. Raval
- Department of Chemistry Faculty of Science, The MaharajaSayajirao University of Baroda Vadodara 390 002 India
| | - Ashutosh V. Bedekar
- Department of Chemistry Faculty of Science, The MaharajaSayajirao University of Baroda Vadodara 390 002 India
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Kannappan J, Mande H, Khanvilkar A, Bedekar A. 5-Nitro- N
2, N
3-bis[(1 R,2 R,4 R)-1,7,7-trimethylbicyclo[2.2.1]heptan-2-yl]isophthalamide dichloromethane hemisolvate. IUCRDATA 2018. [DOI: 10.1107/s2414314618007411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The asymmetric unit of the title hemisolvate, C28H39N3O4·0.5CH2Cl2 contains two isophthalamide camphor derivatives and one dichloromethane solvent molecule. In the crystal, the chiral molecules are connected into [100] stacks by N—H...O and C—H...O hydrogen bonds. The stacks are consolidated by C—H...N and C—H...Cl as well as further C—H...O interactions.
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5
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Modification of Kagan's amide for improved activity as Chiral Solvating Agent in enantiodiscrimination during NMR analysis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.11.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Recent Advances in Multinuclear NMR Spectroscopy for Chiral Recognition of Organic Compounds. Molecules 2017; 22:molecules22020247. [PMID: 28178223 PMCID: PMC6155827 DOI: 10.3390/molecules22020247] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 01/26/2017] [Accepted: 01/30/2017] [Indexed: 12/17/2022] Open
Abstract
Nuclear magnetic resonance (NMR) is a powerful tool for the elucidation of chemical structure and chiral recognition. In the last decade, the number of probes, media, and experiments to analyze chiral environments has rapidly increased. The evaluation of chiral molecules and systems has become a routine task in almost all NMR laboratories, allowing for the determination of molecular connectivities and the construction of spatial relationships. Among the features that improve the chiral recognition abilities by NMR is the application of different nuclei. The simplicity of the multinuclear NMR spectra relative to 1H, the minimal influence of the experimental conditions, and the larger shift dispersion make these nuclei especially suitable for NMR analysis. Herein, the recent advances in multinuclear (19F, 31P, 13C, and 77Se) NMR spectroscopy for chiral recognition of organic compounds are presented. The review describes new chiral derivatizing agents and chiral solvating agents used for stereodiscrimination and the assignment of the absolute configuration of small organic compounds.
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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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Laaksonen T, Heikkinen S, Wähälä K. Synthesis of Tertiary and Quaternary Amine Derivatives from Wood Resin as Chiral NMR Solvating Agents. Molecules 2015; 20:20873-86. [PMID: 26610454 PMCID: PMC6332576 DOI: 10.3390/molecules201119732] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 11/03/2015] [Accepted: 11/08/2015] [Indexed: 11/25/2022] Open
Abstract
Chiral tertiary and quaternary amine solvating agents for NMR spectroscopy were synthesized from the wood resin derivative (+)-dehydroabietylamine (2). The resolution of enantiomers of model compounds [Mosher’s acid (3) and its n-Bu4N salt (4)] (guests) by (+)-dehydroabietyl-N,N-dimethylmethanamine (5) and its ten different ammonium salts (hosts) was studied. The best results with 3 were obtained using 5 while with 4 the best enantiomeric resolution was obtained using (+)-dehydroabietyl-N,N-dimethylmethanaminium bis(trifluoromethane-sulfonimide) (6). The compounds 5 and 6 showed a 1:1 complexation behaviour between the host and guest. The capability of 5 and 6 to recognize the enantiomers of various α-substituted carboxylic acids and their n-Bu4N salts in enantiomeric excess (ee) determinations was demonstrated. A modification of the RES-TOCSY NMR pulse sequence is described, allowing the enhancement of enantiomeric discrimination when the resolution of multiplets is insufficient.
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Affiliation(s)
- Tiina Laaksonen
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P. O. Box 55, FI-00014, Helsinki 00100, Finland.
| | - Sami Heikkinen
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P. O. Box 55, FI-00014, Helsinki 00100, Finland.
| | - Kristiina Wähälä
- Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, P. O. Box 55, FI-00014, Helsinki 00100, Finland.
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