1
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Wootten MM, Le Bailly BAF, Tshepelevitsh S, Leito I, Clayden J. Inducing a pH-dependent conformational response by competitive binding to Zn 2+ of a series of chiral ligands of disparate basicity. Chem Sci 2022; 13:2258-2269. [PMID: 35310487 PMCID: PMC8864710 DOI: 10.1039/d1sc06812a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/09/2022] [Indexed: 12/24/2022] Open
Abstract
Molecules that change shape in response to environmental conditions are central to biological molecular communication devices and their synthetic chemical analogues. Here we report a molecular system in which a series of chiral anionic ligands of differing basicity are selectively protonated according to the pH of the medium. A cationic circular dichroism (CD) reporter complex responds to anion binding by selecting one of two alternative enantiomeric conformations. Exploiting the principle that less basic anions have, in general, weaker electrostatic interactions than more basic anions, a set of three chiral acids with large (>5 unit) pKa differences and differing configurations were sequentially deprotonated in acetonitrile by addition of base, allowing the most basic anion in the mixture at any time to bind to the reporter complex. A characteristic CD output resulted, which changed in sign as the next-most basic anion was revealed by the next deprotonation in the series. Four cycles of switching between three ligand-bound states were achieved with minimal changes in signal magnitude, by alternating addition of base and acid. The pH-dependent conformational response was used to transduce a signal by appending to the binding site a 2-aminoisobutyric acid (Aib) oligomer, whose M or P helical conformation depended on the chirality of the bound ligand, and was reported by a remote 13C-labelled NMR reporter group. The multicomponent system thus converts a pH signal into a programmable conformational response which induces a remote spectroscopic effect. A chemical system comprising a series of chiral acids of differing pKa, a metal, and a conformationally labile chromophore responds to pH with a CD spectrum that reports the absolute stereochemistry of the most basic anion in the mixture.![]()
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Affiliation(s)
- Matthew M Wootten
- School of Chemistry, University of Bristol Cantock's Close Bristol BS8 1TS UK
| | | | | | - Ivo Leito
- Institute of Chemistry, University of Tartu Ravila 14a Tartu 50411 Estonia
| | - Jonathan Clayden
- School of Chemistry, University of Bristol Cantock's Close Bristol BS8 1TS UK
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2
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Cativiela C, Ordóñez M, Viveros-Ceballos JL. Stereoselective synthesis of acyclic α,α-disubstituted α-amino acids derivatives from amino acids templates. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130875] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Amer MM, Abas H, Leonard DJ, Ward JW, Clayden J. Amino Acid-Derived trans-N-Chloroformylimidazolidinones: Scalable, Stereoselective Synthesis, Structure, and Utility. J Org Chem 2019; 84:7199-7206. [DOI: 10.1021/acs.joc.9b00727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mostafa Mahmoud Amer
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Hossay Abas
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Daniel J. Leonard
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - John W. Ward
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
| | - Jonathan Clayden
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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4
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Gratzer K, Diemer V, Clayden J. Signal transduction in oligoamide foldamers by selective non-covalent binding of chiral phosphates at a urea binding site. Org Biomol Chem 2018; 15:3585-3589. [PMID: 28397923 DOI: 10.1039/c7ob00660h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The transduction of biological signals depends on the spatial communication of conformational change. We report a synthetic mimic of this signal transduction process in which non-covalent binding induces a change in the position of equilibrium between two rapidly interconverting screw-sense conformers of a synthetic helical polyamide. Selectivity was achieved by incorporating at the N-terminus of the polyamide a urea-based anion recognition site capable of binding chiral phosphate anions. As a result of solvent-dependent binding, an induced conformational change propagates from the binding site through the amide chain, leading to a screw-sense preference detectable in the form of a chemical shift separation between two NMR active 13C labels. The remote induction of screw sense preference indicates successful communication of a signal originating solely from non-covalent binding.
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Affiliation(s)
- Katharina Gratzer
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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5
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Direct asymmetric synthesis of α-deuterated α-amino acid derivatives from the parent α-amino acids via memory of chirality. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.02.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Tomsett M, Maffucci I, Le Bailly BAF, Byrne L, Bijvoets SM, Lizio MG, Raftery J, Butts CP, Webb SJ, Contini A, Clayden J. A tendril perversion in a helical oligomer: trapping and characterizing a mobile screw-sense reversal. Chem Sci 2017; 8:3007-3018. [PMID: 28451368 PMCID: PMC5380885 DOI: 10.1039/c6sc05474a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 01/24/2017] [Indexed: 11/21/2022] Open
Abstract
Helical oligomers of achiral monomers adopt domains of uniform screw sense, which are occasionally interrupted by screw-sense reversals. These rare, elusive, and fast-moving features have eluded detailed characterization. We now describe the structure and habits of a screw-sense reversal trapped within a fragment of a helical oligoamide foldamer of the achiral quaternary amino acid 2-aminoisobutyric acid (Aib). The reversal was enforced by compelling the amide oligomer to adopt a right-handed screw sense at one end and a left-handed screw sense at the other. The trapped reversal was characterized by X-ray crystallography, and its dynamic properties were monitored by NMR and circular dichroism, and modelled computationally. Raman spectroscopy indicated that a predominantly helical architecture was maintained despite the reversal. NMR and computational results indicated a stepwise shift from one screw sense to another on moving along the helical chain, indicating that in solution the reversal is not localised at a specific location, but is free to migrate across a number of residues. Analogous unconstrained screw-sense reversals that are free to move within a helical structure are likely to provide the mechanism by which comparable helical polymers and foldamers undergo screw-sense inversion.
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Affiliation(s)
- Michael Tomsett
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK .
| | - Irene Maffucci
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini" , Università degli Studi di Milano , Via Venezian , 21 20133 Milano , Italy
| | - Bryden A F Le Bailly
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK .
| | - Liam Byrne
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK
| | - Stefan M Bijvoets
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK
| | - M Giovanna Lizio
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK.,Manchester Institute of Biotechnology , University of Manchester , 131 Princess St , Manchester M1 7DN , UK
| | - James Raftery
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK
| | - Craig P Butts
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK .
| | - Simon J Webb
- School of Chemistry , University of Manchester , Oxford Road , Manchester M13 9PL , UK.,Manchester Institute of Biotechnology , University of Manchester , 131 Princess St , Manchester M1 7DN , UK
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche - Sezione di Chimica Generale e Organica "Alessandro Marchesini" , Università degli Studi di Milano , Via Venezian , 21 20133 Milano , Italy
| | - Jonathan Clayden
- School of Chemistry , University of Bristol , Cantock's Close , Bristol BS8 1TS , UK .
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7
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Kasamatsu K, Yoshimura T, Mandi A, Taniguchi T, Monde K, Furuta T, Kawabata T. α-Arylation of α-Amino Acid Derivatives with Arynes via Memory of Chirality: Asymmetric Synthesis of Benzocyclobutenones with Tetrasubstituted Carbon. Org Lett 2017; 19:352-355. [DOI: 10.1021/acs.orglett.6b03533] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Koji Kasamatsu
- Institute
for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Tomoyuki Yoshimura
- Faculty
of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical,
and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Attila Mandi
- Frontier
Research Center for Advanced Material and Life Science, Faculty of
Advanced Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Tohru Taniguchi
- Frontier
Research Center for Advanced Material and Life Science, Faculty of
Advanced Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Kenji Monde
- Frontier
Research Center for Advanced Material and Life Science, Faculty of
Advanced Life Science, Hokkaido University, Kita 21 Nishi 11, Sapporo 001-0021, Japan
| | - Takumi Furuta
- Institute
for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Takeo Kawabata
- Institute
for Chemical Research, Kyoto University, Uji 611-0011, Japan
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8
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Diemer V, Maury J, Le Bailly BAF, Webb SJ, Clayden J. Dibenzazepinyl ureas as dual NMR and CD probes of helical screw-sense preference in conformationally equilibrating dynamic foldamers. Chem Commun (Camb) 2017; 53:10768-10771. [DOI: 10.1039/c7cc06427f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Dibenzazepinyl ureas act as probes to allow conformational analysis of screw-sense preference in dynamic foldamers by both NMR and CD spectroscopy.
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Affiliation(s)
- Vincent Diemer
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | - Julien Maury
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | | | - Simon J. Webb
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
- Manchester Institute of Biotechnology
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9
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10
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Abstract
Foldamers can be made more than pieces of static, conformationally uniform molecular architecture by designing into their structure the conformational dynamism characteristic of functional molecular machines. We show that these dynamic foldamers display biomimetic properties reminiscent of allosteric proteins and receptor molecules. They can translate chemical signals into conformational changes, and hence into chemical outputs such as control of reactivity and selectivity. Future developments could see dynamic foldamers operating in the membrane phase providing artificial mechanisms for communication and control that integrate synthetic chemistry into synthetic biology.
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Affiliation(s)
- Bryden A F Le Bailly
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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11
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Le Bailly BAF, Byrne L, Clayden J. Refoldable Foldamers: Global Conformational Switching by Deletion or Insertion of a Single Hydrogen Bond. Angew Chem Int Ed Engl 2016; 55:2132-6. [PMID: 26762559 PMCID: PMC4755161 DOI: 10.1002/anie.201510605] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Indexed: 11/12/2022]
Abstract
Small changes in the structure of a foldamer may lead to gross changes in conformational preference. We show that the simple insertion or deletion of a single hydrogen bond by changes in pH or by photochemical deprotection is sufficient to refold a helical oligomer, interconverting M and P screw-sense preference. As a consequence of the switch, information may be transmitted to a remote catalytic site, selectively directing the formation of either of two enantiomeric products by a reaction involving 1,22-remote intermolecular asymmetric induction.
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Affiliation(s)
- Bryden A F Le Bailly
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.,School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Liam Byrne
- School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Jonathan Clayden
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
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12
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Le Bailly BAF, Byrne L, Clayden J. Refoldable Foldamers: Global Conformational Switching by Deletion or Insertion of a Single Hydrogen Bond. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510605] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bryden A. F. Le Bailly
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Liam Byrne
- School of Chemistry; University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Jonathan Clayden
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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13
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Atkinson RC, Fernández-Nieto F, Mas Roselló J, Clayden J. Pseudoephedrine-Directed Asymmetric α-Arylation of α-Amino Acid Derivatives. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502569] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Atkinson RC, Fernández-Nieto F, Mas Roselló J, Clayden J. Pseudoephedrine-Directed Asymmetric α-Arylation of α-Amino Acid Derivatives. Angew Chem Int Ed Engl 2015; 54:8961-5. [DOI: 10.1002/anie.201502569] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Revised: 05/06/2015] [Indexed: 11/10/2022]
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15
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Brioche J, Pike S, Tshepelevitsh S, Leito I, Morris GA, Webb SJ, Clayden J. Conformational Switching of a Foldamer in a Multicomponent System by pH-Filtered Selection between Competing Noncovalent Interactions. J Am Chem Soc 2015; 137:6680-91. [PMID: 25915163 PMCID: PMC4520694 DOI: 10.1021/jacs.5b03284] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Indexed: 12/26/2022]
Abstract
Biomolecular systems are able to respond to their chemical environment through reversible, selective, noncovalent intermolecular interactions. Typically, these interactions induce conformational changes that initiate a signaling cascade, allowing the regulation of biochemical pathways. In this work, we describe an artificial molecular system that mimics this ability to translate selective noncovalent interactions into reversible conformational changes. An achiral but helical foldamer carrying a basic binding site interacts selectively with the most acidic member of a suite of chiral ligands. As a consequence of this noncovalent interaction, a global absolute screw sense preference, detectable by (13)C NMR, is induced in the foldamer. Addition of base, or acid, to the mixture of ligands competitively modulates their interaction with the binding site, and reversibly switches the foldamer chain between its left and right-handed conformations. As a result, the foldamer-ligand mixture behaves as a biomimetic chemical system with emergent properties, functioning as a "proton-counting" molecular device capable of providing a tunable, pH-dependent conformational response to its environment.
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Affiliation(s)
- Julien Brioche
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Sarah
J. Pike
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Sofja Tshepelevitsh
- Institute
of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia
| | - Ivo Leito
- Institute
of Chemistry, University of Tartu, Ravila 14a, Tartu 50411, Estonia
| | - Gareth A. Morris
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
| | - Simon J. Webb
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
- Manchester
Institute of Biotechnology, University of
Manchester, 131 Princess
Street, Manchester M1 7DN, United Kingdom
| | - Jonathan Clayden
- School
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United
Kingdom
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16
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Le Bailly BAF, Clayden J. Controlling the sign and magnitude of screw-sense preference from the C-terminus of an achiral helical foldamer. Chem Commun (Camb) 2015; 50:7949-52. [PMID: 24918692 DOI: 10.1039/c4cc03261f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The global screw-sense preference of an achiral helical oligomer may be controlled by a single chiral monomer located at one terminus. Remarkably, maximal control is induced in oligomers of the achiral quaternary amino acid Aib by a single C-terminal alaninamide residue, probably because the Ala side chain, though small, is compatible with a 310 helical conformation. The presence or absence of a C-terminal hydrogen bond donor determines the screw sense of the entire oligomer.
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Affiliation(s)
- Bryden A F Le Bailly
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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17
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Maury J, Le Bailly BAF, Raftery J, Clayden J. Conformational cooperativity between helical domains of differing geometry in oligoamide–oligourea foldamer chimeras. Chem Commun (Camb) 2015; 51:11802-5. [DOI: 10.1039/c5cc02995c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Two foldamer domains of different classes (urea and amide) remain in conformational communication, and adopt a well-defined global structure in solution, provided the interdomain hydrogen-bonds are suitably orientated.
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Affiliation(s)
- Julien Maury
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
| | | | - James Raftery
- School of Chemistry
- University of Manchester
- Manchester M13 9PL
- UK
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18
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Gaudel-Siri A, Campolo D, Mondal S, Nechab M, Siri D, Bertrand MP. Theoretical Study To Explain How Chirality Is Stored and Evolves throughout the Radical Cascade Rearrangement of Enyne-allenes. J Org Chem 2014; 79:9086-93. [DOI: 10.1021/jo501450k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Anouk Gaudel-Siri
- Aix-Marseille Université, CNRS, Institut de Chimie
Radicalaire (UMR-7273), 13397 Marseille Cedex 20, France
| | - Damien Campolo
- Aix-Marseille Université, CNRS, Institut de Chimie
Radicalaire (UMR-7273), 13397 Marseille Cedex 20, France
| | - Shovan Mondal
- Department
of Chemistry, Visva Bharati University, Santiniketan, Birbhum, West
Bengal 731235, India
| | - Malek Nechab
- Aix-Marseille Université, CNRS, Institut de Chimie
Radicalaire (UMR-7273), 13397 Marseille Cedex 20, France
| | - Didier Siri
- Aix-Marseille Université, CNRS, Institut de Chimie
Radicalaire (UMR-7273), 13397 Marseille Cedex 20, France
| | - Michèle P. Bertrand
- Aix-Marseille Université, CNRS, Institut de Chimie
Radicalaire (UMR-7273), 13397 Marseille Cedex 20, France
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19
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De Poli M, Clayden J. Thionoglycine as a multifunctional spectroscopic reporter of screw-sense preference in helical foldamers. Org Biomol Chem 2013; 12:836-43. [PMID: 24336870 DOI: 10.1039/c3ob42167h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A single thionoglycine (glycine thioamide, -HNCH2C(=S)-) residue inserted into a peptide foldamer provides both a pair of germinal protons for use as a (1)H NMR stereochemical probe and a chromophore giving rise to a well defined Cotton effect in CD. Comparison of the response of these two features to a local helically chiral environment validates them as independent methods for quantifying the conformational screw-sense preference of a helical oligomer, in this case a peptide made of repeated Aib units. The sign of the Cotton effect provides a measure of the sign of the screw-sense preference, while both the chemical shift separation of the anisochronous signals of the glycine CH2 group and the magnitude of the Cotton effect give an estimate of the helicity excess of the oligomer. The thionoglycine unit is readily introduced synthetically by a thionation of a BocGlyAibOMe dipeptide.
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Affiliation(s)
- Matteo De Poli
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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20
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Byrne L, Solà J, Boddaert T, Marcelli T, Adams RW, Morris GA, Clayden J. Foldamer-Mediated Remote Stereocontrol: >1,60 Asymmetric Induction. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308264] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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21
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Byrne L, Solà J, Boddaert T, Marcelli T, Adams RW, Morris GA, Clayden J. Foldamer-Mediated Remote Stereocontrol: >1,60 Asymmetric Induction. Angew Chem Int Ed Engl 2013; 53:151-5. [DOI: 10.1002/anie.201308264] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Indexed: 11/11/2022]
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22
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End-to-end conformational communication through a synthetic purinergic receptor by ligand-induced helicity switching. Nat Chem 2013; 5:853-60. [PMID: 24056342 DOI: 10.1038/nchem.1747] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 08/06/2013] [Indexed: 11/08/2022]
Abstract
The long-range communication of information, exemplified by signal transduction through membrane-bound receptors, is a central biochemical function. Reversible binding of a messenger ligand induces a local conformational change that is relayed through the receptor, inducing a chemical effect typically several nanometres from the binding site. We report a synthetic receptor mimic that transmits structural information from a boron-based ligand binding site to a spectroscopic reporter located more than 2 nm away. Reversible binding of a diol ligand to the N-terminal binding site induces a screw-sense preference in a helical oligo(aminoisobutyric acid) foldamer, which is relayed to a reporter group at the remote C-terminus, communicating information about the structure and stereochemistry of the ligand. The reversible nature of boronate esterification was exploited to switch the receptor sequentially between left- and right-handed helices, while the exquisite conformational sensitivity of the helical relay allowed the reporter to differentiate even between purine and pyrimidine nucleosides as ligands.
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23
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Tomohara K, Yoshimura T, Hyakutake R, Yang P, Kawabata T. Asymmetric α-Arylation of Amino Acid Derivatives by Clayden Rearrangement of Ester Enolates via Memory of Chirality. J Am Chem Soc 2013; 135:13294-7. [DOI: 10.1021/ja406653n] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Keisuke Tomohara
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Tomoyuki Yoshimura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Ryuichi Hyakutake
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Pan Yang
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Takeo Kawabata
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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24
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Yoshimura T, Tomohara K, Kawabata T. Asymmetric Induction via Short-Lived Chiral Enolates with a Chiral C–O Axis. J Am Chem Soc 2013; 135:7102-5. [DOI: 10.1021/ja4018122] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tomoyuki Yoshimura
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Keisuke Tomohara
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Takeo Kawabata
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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25
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Yoshimura T, Kinoshita T, Yoshioka H, Kawabata T. Asymmetric Intermolecular Conjugate Addition of Amino Acid Derivatives via Memory of Chirality: Total Synthesis of Manzacidin A. Org Lett 2013; 15:864-7. [DOI: 10.1021/ol303568f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | - Hiroyasu Yoshioka
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
| | - Takeo Kawabata
- Institute for Chemical Research, Kyoto University, Uji 611-0011, Japan
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Atkinson RC, Leonard DJ, Maury J, Castagnolo D, Volz N, Clayden J. Intramolecular arylation of amino acid enolates. Chem Commun (Camb) 2013; 49:9734-6. [DOI: 10.1039/c3cc46193a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Pike SJ, De Poli M, Zawodny W, Raftery J, Webb SJ, Clayden J. Diastereotopic fluorine substituents as 19F NMR probes of screw-sense preference in helical foldamers. Org Biomol Chem 2013; 11:3168-76. [DOI: 10.1039/c3ob40463c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tait M, Donnard M, Minassi A, Lefranc J, Bechi B, Carbone G, O’Brien P, Clayden J. Amines Bearing Tertiary Substituents by Tandem Enantioselective Carbolithiation–Rearrangement of Vinylureas. Org Lett 2012; 15:34-7. [DOI: 10.1021/ol3029324] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael Tait
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Morgan Donnard
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Alberto Minassi
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Julien Lefranc
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Beatrice Bechi
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Giorgio Carbone
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Peter O’Brien
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Jonathan Clayden
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K., and Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
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Brown RA, Marcelli T, De Poli M, Solà J, Clayden J. Induction of Unexpected Left-Handed Helicity by an N-Terminal L-Amino Acid in an Otherwise Achiral Peptide Chain. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107583] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Brown RA, Marcelli T, De Poli M, Solà J, Clayden J. Induction of unexpected left-handed helicity by an N-terminal L-amino acid in an otherwise achiral peptide chain. Angew Chem Int Ed Engl 2012; 51:1395-9. [PMID: 22294355 DOI: 10.1002/anie.201107583] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Robert A Brown
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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