1
|
Pow RW, Sinclair ZL, Bell NL, Watfa N, Abul‐Haija YM, Long D, Cronin L. Enantioselective Recognition of Racemic Amino Alcohols in Aqueous Solution by Chiral Metal-Oxide Keplerate {Mo 132 } Cluster Capsules. Chemistry 2021; 27:12327-12334. [PMID: 34196438 PMCID: PMC8457076 DOI: 10.1002/chem.202100899] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Indexed: 11/06/2022]
Abstract
Determining the relative configuration or enantiomeric excess of a substance may be achieved using NMR spectroscopy by employing chiral shift reagents (CSRs). Such reagents interact noncovalently with the chiral solute, resulting in each chiral form experiencing different magnetic anisotropy; this is then reflected in their NMR spectra. The Keplerate polyoxometalate (POM) is a molybdenum-based, water-soluble, discrete inorganic structure with a pore-accessible inner cavity, decorated by differentiable ligands. Through ligand exchange from the self-assembled nanostructure, a set of chiral Keplerate host molecules has been synthesised. By exploiting the interactions of analyte molecules at the surface pores, the relative configuration of chiral amino alcohol guests (phenylalaninol and 2-amino-1-phenylethanol) in aqueous solvent was establish and their enantiomeric excess was determined by 1 H NMR using shifts of ΔΔδ=0.06 ppm. The use of POMs as chiral shift reagents represents an application of a class that is yet to be well established and opens avenues into aqueous host-guest chemistry with self-assembled recognition agents.
Collapse
Affiliation(s)
- Robert W. Pow
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Zoё L. Sinclair
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Nicola L. Bell
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Nancy Watfa
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | | | - De‐Liang Long
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Leroy Cronin
- Department of ChemistryUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| |
Collapse
|
2
|
Malinowska M, Jarzyński S, Pieczonka A, Rachwalski M, Leśniak S, Zawisza A. Optically Pure Aziridin-2-yl Methanols as Readily Available 1H NMR Sensors for Enantiodiscrimination of α-Racemic Carboxylic Acids Containing Tertiary or Quaternary Stereogenic Centers. J Org Chem 2020; 85:11794-11801. [PMID: 32805106 PMCID: PMC7506949 DOI: 10.1021/acs.joc.0c01564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
![]()
Enantiopure
aziridin-2-yl methanols 3–7 are used
as highly effective sensors for enantiodiscrimination
of α-racemic carboxylic acids containing tertiary or quaternary
stereogenic centers. A linear correlation between theoretical and
observed % ee values for CSA-3 and enantiomerically enriched
samples of mandelic acid has been observed, indicating the possible
application of these compounds in the ee determination. The free NH
and OH groups in 3–7 ensure good
recognition.
Collapse
Affiliation(s)
- Martyna Malinowska
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Szymon Jarzyński
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Adam Pieczonka
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Michał Rachwalski
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Stanisław Leśniak
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| | - Anna Zawisza
- Department of Organic and Applied Chemistry, University of Łódź, Tamka 12, 91-403 Łódź, Poland
| |
Collapse
|
3
|
Panahi T, Anderson HL, Castro KI, Lamb JD, Harrison RG. Distinguishing amines with an amino acid appended resorcinarene-based cavitand. Supramol Chem 2019. [DOI: 10.1080/10610278.2019.1692138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tayyebeh Panahi
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Holly L. Anderson
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Karla I. Castro
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - John D. Lamb
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| | - Roger G. Harrison
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT, USA
| |
Collapse
|
4
|
Stefańska K, Szafraniec A, Szymański MP, Wierzbicki M, Szumna A, Iwanek W. Chiral chromane[4]arenes synthesised by cycloaddition reactions of o-quinomethine resorcin[4]arenes. NEW J CHEM 2019. [DOI: 10.1039/c8nj06179c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of cavity-extended cyclochiral heterocyclic derivatives of chromane[4]arenes by a cycloaddition reaction between theo-quinomethine derivative of resorcin[4]arene and various styrenes is described.
Collapse
Affiliation(s)
- Karolina Stefańska
- Faculty of Chemistry
- Adam Mickiewicz University
- Umultowska 89b
- 60-614 Poznań
- Poland
| | - Anna Szafraniec
- Faculty of Chemistry
- Adam Mickiewicz University
- Umultowska 89b
- 60-614 Poznań
- Poland
| | - Marek P. Szymański
- Institute of Organic Chemistry
- Polish Academy of Sciences
- Kasprzaka 44/52
- 01-224 Warsaw
- Poland
| | - Michał Wierzbicki
- Institute of Organic Chemistry
- Polish Academy of Sciences
- Kasprzaka 44/52
- 01-224 Warsaw
- Poland
| | - Agnieszka Szumna
- Institute of Organic Chemistry
- Polish Academy of Sciences
- Kasprzaka 44/52
- 01-224 Warsaw
- Poland
| | - Waldemar Iwanek
- Faculty of Chemistry
- Adam Mickiewicz University
- Umultowska 89b
- 60-614 Poznań
- Poland
| |
Collapse
|
5
|
Russo M, Lo Meo P. Binding abilities of a chiral calix[4]resorcinarene: a polarimetric investigation on a complex case of study. Beilstein J Org Chem 2018; 13:2698-2709. [PMID: 29564007 PMCID: PMC5753176 DOI: 10.3762/bjoc.13.268] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/30/2017] [Indexed: 11/23/2022] Open
Abstract
Polarimetry was used to investigate the binding abilities of a chiral calix[4]resorcinarene derivative, bearing L-proline subunits, towards a set of suitably selected organic guests. The simultaneous formation of 1:1 and 2:1 host–guest inclusion complexes was observed in several cases, depending on both the charge status of the host and the structure of the guest. Thus, the use of the polarimetric method was thoroughly revisited, in order to keep into account the occurrence of multiple equilibria. Our data indicate that the stability of the host–guest complexes is affected by an interplay between Coulomb interactions, π–π interactions, desolvation effects and entropy-unfavorable conformational dynamic restraints. Polarimetry is confirmed as a very useful and versatile tool for the investigation of supramolecular interactions with chiral hosts, even in complex systems involving multiple equilibria.
Collapse
Affiliation(s)
- Marco Russo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), University of Palermo, V.le delle Scienze ed. 17, 90128 Palermo, Italy
| | - Paolo Lo Meo
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), University of Palermo, V.le delle Scienze ed. 17, 90128 Palermo, Italy.,ATeNCenter, University of Palermo, V.le delle Scienze ed. 18, 90128 Palermo, Italy
| |
Collapse
|
6
|
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]
|
7
|
Li G, Cao J, Zong W, Lei X, Tan R. Enantiodiscrimination of carboxylic acids using the diphenylprolinol NMR chiral solvating agents. Org Chem Front 2016. [DOI: 10.1039/c5qo00264h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Enantiopure diphenylprolinols have been developed as effective and practical NMR chiral solvating agents for the enantiodiscrimination of diverse α-carboxylic acids.
Collapse
Affiliation(s)
- Gaowei Li
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Jiangming Cao
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing 210093
- P. R. China
| | - Wen Zong
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Xinxiang Lei
- College of Chemistry & Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Renxiang Tan
- Institute of Functional Biomolecules
- State Key Laboratory of Pharmaceutical Biotechnology
- Nanjing University
- Nanjing 210093
- P. R. China
| |
Collapse
|
8
|
Roof shape amines: synthesis and application as NMR chiral solvating agents for discrimination of α-functionalized acids. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
9
|
Application of optically active aminonaphthols as NMR solvating agents for chiral discrimination of mandelic acid. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.04.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
10
|
Yang XF, Ning R, Xie LJ, Cui Y, Zhang YL, Zheng LY. Macrocyclic Compound as NMR Chiral Solvating Agent for Determination of Enantiomeric Excess of Carboxylic Acids. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20130092] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiao-feng Yang
- School of Chemistry and Chemical Engineering, University of Jinan
| | - Rui Ning
- School of Chemistry and Chemical Engineering, University of Jinan
| | - Li-jun Xie
- School of Chemistry and Chemical Engineering, University of Jinan
| | - Yu Cui
- School of Chemistry and Chemical Engineering, University of Jinan
| | - Yong-ling Zhang
- School of Chemistry and Chemical Engineering, University of Jinan
| | - Lu-yi Zheng
- School of Chemistry and Chemical Engineering, University of Jinan
| |
Collapse
|
11
|
|
12
|
Uccello-Barretta G, Balzano F. Chiral NMR Solvating Additives for Differentiation of Enantiomers. Top Curr Chem (Cham) 2013; 341:69-131. [DOI: 10.1007/128_2013_445] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
13
|
Chiral Derivatizing Agents, Macrocycles, Metal Complexes, and Liquid Crystals for Enantiomer Differentiation in NMR Spectroscopy. Top Curr Chem (Cham) 2013; 341:1-68. [DOI: 10.1007/128_2013_433] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
14
|
Wenzel TJ, Rollo RD, Clark RL. Chiral discrimination of aliphatic amines and amino alcohols using NMR spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2012; 50:261-265. [PMID: 22415973 DOI: 10.1002/mrc.2855] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 10/19/2011] [Accepted: 10/23/2011] [Indexed: 05/31/2023]
Abstract
Two methods are compared for analyzing the enantiomeric purity of aliphatic amines and amino alcohols using NMR spectroscopy. The first employs (+)-(18-crown-6)-2,3,11,12-tetracarboxylic acid as a chiral NMR solvating agent in methanol-d(4) . The second involves a derivatization scheme in which the amine is reacted with naphtho[2,3-c]furan-1,3-dione to form the corresponding amide. The naphthyl amide is then mixed with a chiral calix[4]resorcinarene in deuterium oxide. The crown ether only produces sufficient enantiomeric discrimination to determine enantiomeric purity for three of the nine substrates studied. The system with the naphthyl amide and a calix[4]resorcinarene produces enantiomeric discrimination of sufficient magnitude to determine enantiomeric purity for all nine substrates. The H1 and H4 resonances of the naphthyl ring are especially suitable to monitor for enantiomeric discrimination. The order of the (R)- and (S)-enantiomers of the H1 and H4 resonances exhibit specific trends for aliphatic amines and amino alcohols that correlate with the absolute configuration.
Collapse
Affiliation(s)
- Thomas J Wenzel
- Department of Chemistry, Bates College, Lewiston, ME 04240, USA.
| | | | | |
Collapse
|
15
|
Pham NH, Wenzel TJ. A water-soluble calix[4]resorcinarene with L-pipecolinic acid groups as a chiral NMR solvating agent. Chirality 2012; 24:193-200. [DOI: 10.1002/chir.21979] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Accepted: 10/19/2011] [Indexed: 11/09/2022]
|
16
|
Pham NH, Wenzel TJ. A sulfonated calix[4]resorcinarene with l-pipecolinic acid groups as a water-soluble chiral NMR solvating agent. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.08.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|