1
|
Barlow SR, Tomkinson D, Halcovitch NR, Evans NH. Rapid synthesis of hydrogen bond templated handcuff rotaxanes. Org Biomol Chem 2024; 22:5393-5400. [PMID: 38873753 DOI: 10.1039/d4ob00672k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
The rapid synthesis of hydrogen bond templated handcuff rotaxanes is described. The isolated rotaxanes were characterized by NMR and IR spectroscopies and high resolution mass spectrometry. This report represents a rare demonstration of preparing (2)handcuff [2]rotaxanes by covalently linking separate axles threaded through the rings of a bis-macrocycle by use of the copper catalyzed azide-alkyne cycloaddition (CuAAC) reaction.
Collapse
Affiliation(s)
- Sean R Barlow
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - David Tomkinson
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | | | - Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| |
Collapse
|
2
|
Barlow SR, Halcovitch NR, Evans NH. A pyridine- N-oxide catenane for cation recognition. Org Biomol Chem 2024; 22:3001-3008. [PMID: 38526411 DOI: 10.1039/d4ob00176a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
The rapid preparation of a pyridine-N-oxide containing [2]catenane is described. The [2]catenane was characterized by NMR spectroscopy, mass spectrometry and X-ray single crystal structure determination. 1H NMR titration experiments reveal the [2]catenane may be reversibly protonated, as well as an ability to bind lithium cations more strongly than sodium cations.
Collapse
Affiliation(s)
- Sean R Barlow
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | | | - Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| |
Collapse
|
3
|
Barlow SR, Akien GR, Evans NH. Hydrogen bond templated synthesis of catenanes and rotaxanes from a single isophthalic acid derivative. Org Biomol Chem 2023; 21:402-414. [PMID: 36525263 DOI: 10.1039/d2ob02019j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hydrogen bond templated [2]catenanes and [2]rotaxanes have been synthesized using azide precursors derived from a single isophthalic acid derivative precursor. The interlocked molecules were prepared using either stoichiometric or near stoichiometric amounts of macrocycle and CuAAC "click" precursors, with yields of up to 70% for the mechanical bond formation step. Successful preparation of the interlocked structures was confirmed by NMR spectroscopy and mass spectrometry, with detail of co-conformational behaviour being elucidated by a range of 1H NMR spectroscopic experiments.
Collapse
Affiliation(s)
- Sean R Barlow
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - Geoffrey R Akien
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| |
Collapse
|
4
|
Joy F, Nizam A, Nair Y, Pillai R, Devasia J, Nagella P. Templating motifs of molecular axles in hydrogen bonding [2]rotaxanes: Synthesis and applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
5
|
Hoyas Pérez N, Sherin PS, Posligua V, Greenfield JL, Fuchter MJ, Jelfs KE, Kuimova MK, Lewis JEM. Emerging properties from mechanical tethering within a post-synthetically functionalised catenane scaffold. Chem Sci 2022; 13:11368-11375. [DOI: 10.1039/d2sc04101d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 09/06/2022] [Indexed: 11/21/2022] Open
Abstract
Using a post-synthetic modification strategy we have prepared a series of functionalised [2]catenanes to study the impact of mechanically-enforced proximity on functional group properties, including emission, electrochemistry and photoreactivity.
Collapse
Affiliation(s)
- Nadia Hoyas Pérez
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Peter S. Sherin
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Victor Posligua
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Jake L. Greenfield
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Matthew J. Fuchter
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Kim E. Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - Marina K. Kuimova
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| | - James E. M. Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 82 Wood Lane, London W12 0BZ, UK
| |
Collapse
|
6
|
McCarney EP, McCarthy WJ, Lovitt JI, Gunnlaugsson T. Macrocyclic vs. [2]catenane btp structures: influence of (aryl) substitution on the self templation of btp ligands in macrocyclic synthesis. Org Biomol Chem 2021; 19:10189-10200. [PMID: 34788352 DOI: 10.1039/d1ob02032c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of four 2,6-bis(1,2,3-triazol-4-yl)pyridine (btp) olefin based ligands 3, 4, 11 and 12 is described and their attempted use to form mechanically interlocked molecules using ring closing metatheses (RCM) reactions. The btp ligands were modified in two ways, in 3 and 4 the aryl substitution pattern was changed from 4th position to 3rd position and in the case of 11 and 12, the arms were replaced with aliphatic chains. Our study demonstrates that for all four ligands, the RCM reactions only result in the formation of macrocyclic structures, which in three of the cases, were structurally characterised in both solution (using NMR and HRMS) and in the solid-state using X-ray crystallography. NMR studies were also carried out to investigate if these ligands could preorganise in solution via hydrogen bonding interactions. This study provides a handle of how such precursor substitution can be used to direct the formation of macrocycles or mechanically interlocked structures.
Collapse
Affiliation(s)
- Eoin P McCarney
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - William J McCarthy
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland.
| | - June I Lovitt
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,SFI Synthesis and Solid State Pharmaceutical Centre (SSPC), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland. .,SFI Synthesis and Solid State Pharmaceutical Centre (SSPC), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| |
Collapse
|
7
|
Sandoval-Torrientes R, Carr T, De Bo G. A Mechanochromic Hydrogen-Bonded Rotaxane. Macromol Rapid Commun 2020; 42:e2000447. [PMID: 33043523 DOI: 10.1002/marc.202000447] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/09/2020] [Indexed: 01/08/2023]
Abstract
Tensile forces influence a variety of important biological processes and force sensors are required to study these processes in vivo. Current force sensors are often tailor-made for a specific application, or activate at much higher forces than those observed at the cellular or tissue level. A versatile force sensor, with tunable mechanical and optical properties, activated at low pN forces will be ideal. In this communication, a new mechanoresponsive fluorescent hydrogen-bonded rotaxane, built around a maleimide dye, is reported. Its force-sensing properties are demonstrated in a polyacrylamide gel, a synthetic model of living tissue.
Collapse
Affiliation(s)
| | - ThomasR Carr
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Guillaume De Bo
- Department of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| |
Collapse
|
8
|
Young MJ, Akien GR, Evans NH. An amide hydrogen bond templated [1]rotaxane displaying a peptide motif - demonstrating an expedient route to synthetic mimics of lasso peptides. Org Biomol Chem 2020; 18:5203-5209. [PMID: 32597913 DOI: 10.1039/d0ob01190h] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The rapid synthesis of an amide hydrogen bond templated [1]rotaxane is reported - demonstrating a potential pathway to synthetic analogues of lasso peptides. The structures of the [1]rotaxane and its unthreaded isomer have been characterized by NMR spectroscopy and modelled using DFT calculations.
Collapse
Affiliation(s)
- Matthew J Young
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - Geoffrey R Akien
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| | - Nicholas H Evans
- Department of Chemistry, Lancaster University, Lancaster, LA1 4YB, UK.
| |
Collapse
|
9
|
Template-Free Synthesis of a Phenanthroline-Containing [2]Rotaxane: A Reversible pH-Controllable Molecular Switch. Symmetry (Basel) 2019. [DOI: 10.3390/sym11091137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The synthesis of symmetric and asymmetric rotaxanes consisting of neutral axle and ring components without ionic templates is necessary for applications in molecular sensors and molecular switches. A phenanthroline-containing symmetric [2]rotaxane was newly synthesized by inducing hydrogen bonding and π-interaction using a template-free threading-followed-by-stoppering method. The obtained rotaxane serves as a reversible pH-controllable molecular switch.
Collapse
|
10
|
Evans NH. Recent Advances in the Synthesis and Application of Hydrogen Bond Templated Rotaxanes and Catenanes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900081] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
11
|
Lewis JEM. Self-templated synthesis of amide catenanes and formation of a catenane coordination polymer. Org Biomol Chem 2019; 17:2442-2447. [PMID: 30742192 DOI: 10.1039/c9ob00107g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A self-templation strategy was used to synthesise isophthalamide [2]catenanes of various sizes in up to 51% yield without the need for metal ions as templates or mediators of covalent bond formation. Using this strategy a bis-monodentate catenane was prepared incorporating exohedral pyridine units. Upon complexation of this ligand with AgOTf a one-dimensional coordination polymer was obtained in the solid state in which both macrocycles of the catenane are involved in binding to the metal nodes, resulting in a rare example of a coordination assembly in which mechanical bonds are incorporated into the structure backbone.
Collapse
Affiliation(s)
- James E M Lewis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, 80 Wood Lane, London W12 0BZ, UK.
| |
Collapse
|
12
|
Gell CE, McArdle-Ismaguilov TA, Evans NH. Modulating the expression of chirality in a mechanically chiral rotaxane. Chem Commun (Camb) 2019; 55:1576-1579. [DOI: 10.1039/c8cc10044f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Expression of mechanical chirality by a rotaxane may be modulated by affecting the co-conformational behaviour through varying solvent or by addition of acid and base.
Collapse
|
13
|
Orlando T, Salbego PRS, Zimmer GC, Pagliari AB, Bender CR, Rodrigues LV, Bonacorso HG, Zanatta N, Berná J, Martins MAP. Conformer Distribution in Rotaxanes Containing Nonsymmetric Threads: A Systematic Approach. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800991] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Tainára Orlando
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Paulo R. S. Salbego
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Geórgia C. Zimmer
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Anderson B. Pagliari
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Caroline R. Bender
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Leticia V. Rodrigues
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Helio G. Bonacorso
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Nilo Zanatta
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Jose Berná
- Departmento de Química Orgánica; Faculdad de Química; Universidade de Murcia; 30100 Murcia Spain
| | - Marcos A. P. Martins
- Núcleo de Química de Heterociclos (NUQUIMHE); Departmento de Química; Unversidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| |
Collapse
|
14
|
De Bo G, Dolphijn G, McTernan CT, Leigh DA. [2]Rotaxane Formation by Transition State Stabilization. J Am Chem Soc 2017. [DOI: 10.1021/jacs.7b05640] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Guillaume De Bo
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Guillaume Dolphijn
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Charlie T. McTernan
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - David A. Leigh
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| |
Collapse
|