1
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Homer JA, Sun S, Koelln RA, Moses JE. Protocol for producing phosphoramidate using phosphorus fluoride exchange click chemistry. STAR Protoc 2024; 5:102824. [PMID: 38217854 PMCID: PMC10825769 DOI: 10.1016/j.xpro.2023.102824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/14/2023] [Accepted: 12/20/2023] [Indexed: 01/15/2024] Open
Abstract
Phosphorus fluoride exchange (PFEx) is a catalytic click reaction that involves exchanging high oxidation state P-F bonds with alcohol and amine nucleophiles, reliably yielding P-O- and P-N-linked compounds. Here, we describe steps for preparing a phosphoramidic difluoride and performing two sequential PFEx reactions to yield a phosphoramidate through careful catalyst selection. We then detail procedures for handling and quenching potentially toxic P-F-containing compounds to ensure user safety when conducting PFEx reactions. For complete details on the use and execution of this protocol, please refer to Sun et al.1.
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Affiliation(s)
- Joshua A Homer
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, 1 Bungtown Road, NY 11724, USA
| | - Shoujun Sun
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, 1 Bungtown Road, NY 11724, USA
| | - Rebecca A Koelln
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, 1 Bungtown Road, NY 11724, USA
| | - John E Moses
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, 1 Bungtown Road, NY 11724, USA.
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2
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Homer JA, Koelln RA, Barrow AS, Gialelis TL, Boiarska Z, Steinohrt NS, Lee EF, Yang WH, Johnson RM, Chung T, Habowski AN, Vishwakarma DS, Bhunia D, Avanzi C, Moorhouse AD, Jackson M, Tuveson DA, Lyons SK, Lukey MJ, Fairlie WD, Haider SM, Steinmetz MO, Prota AE, Moses JE. Modular synthesis of functional libraries by accelerated SuFEx click chemistry. Chem Sci 2024; 15:3879-3892. [PMID: 38487227 PMCID: PMC10935723 DOI: 10.1039/d3sc05729a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/09/2024] [Indexed: 03/17/2024] Open
Abstract
Accelerated SuFEx Click Chemistry (ASCC) is a powerful method for coupling aryl and alkyl alcohols with SuFEx-compatible functional groups. With its hallmark favorable kinetics and exceptional product yields, ASCC streamlines the synthetic workflow, simplifies the purification process, and is ideally suited for discovering functional molecules. We showcase the versatility and practicality of the ASCC reaction as a tool for the late-stage derivatization of bioactive molecules and in the array synthesis of sulfonate-linked, high-potency, microtubule targeting agents (MTAs) that exhibit nanomolar anticancer activity against multidrug-resistant cancer cell lines. These findings underscore ASCC's promise as a robust platform for drug discovery.
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Affiliation(s)
- Joshua A Homer
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Rebecca A Koelln
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Andrew S Barrow
- La Trobe Institute for Molecular Science, La Trobe University Melbourne VIC 3086 Australia
| | - Timothy L Gialelis
- La Trobe Institute for Molecular Science, La Trobe University Melbourne VIC 3086 Australia
| | - Zlata Boiarska
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut Villigen PSI 5232 Switzerland
- Department of Chemistry, Università degli Studi di Milano Via Golgi 19 20133 Milan Italy
| | - Nikita S Steinohrt
- Olivia Newton-John Cancer Research Institute Heidelberg Victoria 3084 Australia
- School of Cancer Medicine, La Trobe University Melbourne Victoria 3086 Australia
| | - Erinna F Lee
- Olivia Newton-John Cancer Research Institute Heidelberg Victoria 3084 Australia
- School of Cancer Medicine, La Trobe University Melbourne Victoria 3086 Australia
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University Melbourne Victoria 3086 Australia
| | - Wen-Hsuan Yang
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Robert M Johnson
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Taemoon Chung
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Amber N Habowski
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | | | - Debmalya Bhunia
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Charlotte Avanzi
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University Fort Collins CO 80523 USA
| | - Adam D Moorhouse
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Mary Jackson
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University Fort Collins CO 80523 USA
| | - David A Tuveson
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Scott K Lyons
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - Michael J Lukey
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
| | - W Douglas Fairlie
- Olivia Newton-John Cancer Research Institute Heidelberg Victoria 3084 Australia
- School of Cancer Medicine, La Trobe University Melbourne Victoria 3086 Australia
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University Melbourne Victoria 3086 Australia
| | - Shozeb M Haider
- School of Pharmacy, University College London 29-39 Brunswick Square London WC1N 1AX UK
| | - Michel O Steinmetz
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut Villigen PSI 5232 Switzerland
- Biozentrum, University of Basel 4056 Basel Switzerland
| | - Andrea E Prota
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut Villigen PSI 5232 Switzerland
| | - John E Moses
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
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3
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Smedley CJ, Giel MC, Fallon T, Moses JE. Ethene-1,1-disulfonyl Difluoride (EDSF) for SuFEx Click Chemistry: Synthesis of SuFExable 1,1-Bissulfonylfluoride Substituted Cyclobutene Hubs. Angew Chem Int Ed Engl 2023; 62:e202303916. [PMID: 37224463 PMCID: PMC10958772 DOI: 10.1002/anie.202303916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/21/2023] [Accepted: 05/22/2023] [Indexed: 05/26/2023]
Abstract
We present the synthesis of 1,1-bis(fluorosulfonyl)-2-(pyridin-1-ium-1-yl)ethan-1-ide, a bench-stable precursor to ethene-1,1-disulfonyl difluoride (EDSF). The novel SuFEx reagent, EDSF, is demonstrated in the preparation of 26 unique 1,1-bissulfonylfluoride substituted cyclobutenes via a cycloaddition reaction. The regioselective click cycloaddition reaction is rapid, straightforward, and highly efficient, enabling the generation of highly functionalized 4-membered ring (4MR) carbocycles. These carbocycles are valuable structural motifs found in numerous bioactive natural products and pharmaceutically relevant small molecules. Additionally, we showcase diversification of the novel cyclobutene cores through selective Cs2 CO3 -activated SuFEx click chemistry between a single S-F group and an aryl alcohol, yielding the corresponding sulfonate ester products with high efficiency. Finally, density functional theory calculations offer mechanistic insights about the reaction pathway.
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Affiliation(s)
- Christopher J. Smedley
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia
- La Trobe Institute for Molecular Science, Melbourne, VIC 3086, Australia
| | - Marie-Claire Giel
- La Trobe Institute for Molecular Science, Melbourne, VIC 3086, Australia
| | - Thomas Fallon
- School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - John E. Moses
- Cancer Center, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724 (USA)
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4
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Gialelis TL, Wang Z, Homer JA, Yang WH, Chung T, Hu Q, Smedley CJ, Pawar NJ, Upadhyay NS, Tuveson DA, Lyons SK, Lukey MJ, Moses JE. Inhibition of mitochondrial metabolism by (-)-jerantinine A: synthesis and biological studies in triple-negative breast cancer cells. RSC Med Chem 2023; 14:710-714. [PMID: 37122543 PMCID: PMC10131581 DOI: 10.1039/d3md00049d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 02/21/2023] [Indexed: 03/05/2023] Open
Abstract
A concise semi-synthesis of the Aspidosperma alkaloids, (-)-jerantinine A and (-)-melodinine P, and derivatives thereof, is reported. The novel compounds were shown to have potent activity against MDA-MB-231 triple-negative breast cancer cells. Furthermore, unbiased metabolomics and live cell reporter assays reveal (-)-jerantinine A alters cellular redox metabolism and induces oxidative stress that coincides with cell cycle arrest.
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Affiliation(s)
- Timothy L Gialelis
- La Trobe Institute for Molecular Science, La Trobe University Melbourne VIC 3086 Australia
| | - Zifei Wang
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - Joshua A Homer
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - Wen-Hsuan Yang
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - Taemoon Chung
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - Qingting Hu
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
- Graduate Program in Genetics, Stony Brook University Stony Brook NY 11794 USA
| | - Christopher J Smedley
- La Trobe Institute for Molecular Science, La Trobe University Melbourne VIC 3086 Australia
| | - Nitin J Pawar
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - Nitinkumar S Upadhyay
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - David A Tuveson
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - Scott K Lyons
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - Michael J Lukey
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - John E Moses
- Cancer Center, Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
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5
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Ottonello A, Wyllie JA, Yahiaoui O, Sun S, Koelln RA, Homer JA, Johnson RM, Murray E, Williams P, Bolla JR, Robinson CV, Fallon T, Soares da Costa TP, Moses JE. Shapeshifting bullvalene-linked vancomycin dimers as effective antibiotics against multidrug-resistant gram-positive bacteria. Proc Natl Acad Sci U S A 2023; 120:e2208737120. [PMID: 37011186 PMCID: PMC10104512 DOI: 10.1073/pnas.2208737120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 02/24/2023] [Indexed: 04/05/2023] Open
Abstract
The alarming rise in superbugs that are resistant to drugs of last resort, including vancomycin-resistant enterococci and staphylococci, has become a significant global health hazard. Here, we report the click chemistry synthesis of an unprecedented class of shapeshifting vancomycin dimers (SVDs) that display potent activity against bacteria that are resistant to the parent drug, including the ESKAPE pathogens, vancomycin-resistant Enterococcus (VRE), methicillin-resistant Staphylococcus aureus (MRSA), as well as vancomycin-resistant S. aureus (VRSA). The shapeshifting modality of the dimers is powered by a triazole-linked bullvalene core, exploiting the dynamic covalent rearrangements of the fluxional carbon cage and creating ligands with the capacity to inhibit bacterial cell wall biosynthesis. The new shapeshifting antibiotics are not disadvantaged by the common mechanism of vancomycin resistance resulting from the alteration of the C-terminal dipeptide with the corresponding d-Ala-d-Lac depsipeptide. Further, evidence suggests that the shapeshifting ligands destabilize the complex formed between the flippase MurJ and lipid II, implying the potential for a new mode of action for polyvalent glycopeptides. The SVDs show little propensity for acquired resistance by enterococci, suggesting that this new class of shapeshifting antibiotic will display durable antimicrobial activity not prone to rapidly acquired clinical resistance.
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Affiliation(s)
- Alessandra Ottonello
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC3086, Australia
| | - Jessica A. Wyllie
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC3086, Australia
| | - Oussama Yahiaoui
- Department of Chemistry, School of Physical Sciences, The University of Adelaide, Adelaide, SA5005, Australia
| | - Shoujun Sun
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
| | - Rebecca A. Koelln
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
| | - Joshua A. Homer
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
| | - Robert M. Johnson
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
| | - Ewan Murray
- National Biofilms Innovation Centre, Biodiscovery Institute and School of Life Sciences, University of Nottingham, University Park, NottinghamNG7 2RD, U.K.
| | - Paul Williams
- National Biofilms Innovation Centre, Biodiscovery Institute and School of Life Sciences, University of Nottingham, University Park, NottinghamNG7 2RD, U.K.
| | - Jani R. Bolla
- Department of Biology, University of Oxford, OxfordOX1 3RB, U.K.
- The Kavli Institute for Nanoscience Discovery, University of Oxford, OxfordOX1 3QU, U.K.
| | - Carol V. Robinson
- The Kavli Institute for Nanoscience Discovery, University of Oxford, OxfordOX1 3QU, U.K.
- Physical and Theoretical Chemistry Laboratory, University of Oxford, OxfordOX1 3QZ, U.K.
| | - Thomas Fallon
- Department of Chemistry, School of Physical Sciences, The University of Adelaide, Adelaide, SA5005, Australia
| | | | - John E. Moses
- Cancer Center, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY11724
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6
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Smedley CJ, Homer JA, Gialelis TL, Barrow AS, Koelln RA, Moses JE. Accelerated SuFEx Click Chemistry For Modular Synthesis. Angew Chem Int Ed Engl 2022; 61:e202112375. [PMID: 34755436 PMCID: PMC8867595 DOI: 10.1002/anie.202112375] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/20/2021] [Indexed: 01/23/2023]
Abstract
SuFEx click chemistry is a powerful method designed for the selective, rapid, and modular synthesis of functional molecules. Classical SuFEx reactions form stable S-O linkages upon exchange of S-F bonds with aryl silyl-ether substrates, and while near-perfect in their outcome, are sometimes disadvantaged by relatively high catalyst loadings and prolonged reaction times. We herein report the development of accelerated SuFEx click chemistry (ASCC), an improved SuFEx method for the efficient and catalytic coupling of aryl and alkyl alcohols with a range of SuFExable hubs. We demonstrate Barton's hindered guanidine base (2-tert-butyl-1,1,3,3-tetramethylguanidine; BTMG) as a superb SuFEx catalyst that, when used in synergy with silicon additive hexamethyldisilazane (HMDS), yields stable S-O bond linkages in a single step; often within minutes. The powerful combination of BTMG and HMDS reagents allows for catalyst loadings as low as 1.0 mol % and, in congruence with click-principles, provides a scalable method that is safe, efficient, and practical for modular synthesis. ASSC expands the number of accessible SuFEx products and will find significant application in organic synthesis, medicinal chemistry, chemical biology, and materials science.
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Affiliation(s)
| | - Joshua A. Homer
- Cancer Center, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA
| | | | - Andrew S. Barrow
- L. I. M. S., Science Dr, Bundoora, Melbourne, VIC 3086, Australia
| | - Rebecca A. Koelln
- Cancer Center, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA
| | - John E. Moses
- Cancer Center, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA,
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7
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Smedley CJ, Homer JA, Gialelis TL, Barrow AS, Koelln RA, Moses JE. Accelerated SuFEx Click Chemistry For Modular Synthesis**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Joshua A. Homer
- Cancer Center Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | | | | | - Rebecca A. Koelln
- Cancer Center Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
| | - John E. Moses
- Cancer Center Cold Spring Harbor Laboratory 1 Bungtown Road Cold Spring Harbor NY 11724 USA
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8
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Giel MC, Barrow AS, Smedley CJ, Lewis W, Moses JE. Aminium cation-radical catalysed selective hydration of ( E)-aryl enynes. Chem Commun (Camb) 2021; 57:6991-6994. [PMID: 34159967 DOI: 10.1039/d1cc02257a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydration of carbon-carbon triple bonds is an important and atom economic synthetic transformation. Herein, we report a mild and selective method for the catalytic Markovnikov hydration of (E)-aryl enynes to the corresponding enones, mediated through the bench-stable aminium salt, tris(4-bromophenyl)ammoniumyl hexachloroantimonate (TBPA). The chemoselective and diastereoselective method proceeds under neutral metal-free conditions, delivering excellent product yields from terminal and internal alkyne units. The synthesis of biologically important (E)-3-styrylisocoumarins, including a formal synthesis of the natural product achlisocoumarin III, demonstrates the utility of this novel transformation.
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Affiliation(s)
- Marie-Claire Giel
- La Trobe Institute for Molecular Science, Melbourne, VIC 3086, Australia
| | - Andrew S Barrow
- La Trobe Institute for Molecular Science, Melbourne, VIC 3086, Australia
| | | | - William Lewis
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
| | - John E Moses
- Cancer Center, Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA. and Department of Chemistry, Stony Brook University, NY 11794, USA
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9
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Smedley CJ, Li G, Barrow AS, Gialelis TL, Giel M, Ottonello A, Cheng Y, Kitamura S, Wolan DW, Sharpless KB, Moses JE. Frontispiece: Diversity Oriented Clicking (DOC): Divergent Synthesis of SuFExable Pharmacophores from 2‐Substituted‐Alkynyl‐1‐Sulfonyl Fluoride (SASF) Hubs. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/anie.202083063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christopher J. Smedley
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Gencheng Li
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Andrew S. Barrow
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Timothy L. Gialelis
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Marie‐Claire Giel
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Alessandra Ottonello
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Yunfei Cheng
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Seiya Kitamura
- Department of Molecular Medicine The Scripps Research Institute La Jolla CA 92037 USA
| | - Dennis W. Wolan
- Department of Molecular Medicine The Scripps Research Institute La Jolla CA 92037 USA
| | - K. Barry Sharpless
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - John E. Moses
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
- Cancer Center Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
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10
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Smedley CJ, Li G, Barrow AS, Gialelis TL, Giel M, Ottonello A, Cheng Y, Kitamura S, Wolan DW, Sharpless KB, Moses JE. Frontispiz: Diversity Oriented Clicking (DOC): Divergent Synthesis of SuFExable Pharmacophores from 2‐Substituted‐Alkynyl‐1‐Sulfonyl Fluoride (SASF) Hubs. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202083063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Christopher J. Smedley
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Gencheng Li
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Andrew S. Barrow
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Timothy L. Gialelis
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Marie‐Claire Giel
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Alessandra Ottonello
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Yunfei Cheng
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Seiya Kitamura
- Department of Molecular Medicine The Scripps Research Institute La Jolla CA 92037 USA
| | - Dennis W. Wolan
- Department of Molecular Medicine The Scripps Research Institute La Jolla CA 92037 USA
| | - K. Barry Sharpless
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - John E. Moses
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
- Cancer Center Cold Spring Harbor Laboratory 1 Bungtown Rd Cold Spring Harbor NY 11724 USA
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11
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Smedley CJ, Li G, Barrow AS, Gialelis TL, Giel MC, Ottonello A, Cheng Y, Kitamura S, Wolan DW, Sharpless KB, Moses JE. Diversity Oriented Clicking (DOC): Divergent Synthesis of SuFExable Pharmacophores from 2-Substituted-Alkynyl-1-Sulfonyl Fluoride (SASF) Hubs. Angew Chem Int Ed Engl 2020; 59:12460-12469. [PMID: 32301265 PMCID: PMC7572632 DOI: 10.1002/anie.202003219] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Indexed: 01/08/2023]
Abstract
Diversity Oriented Clicking (DOC) is a unified click-approach for the modular synthesis of lead-like structures through application of the wide family of click transformations. DOC evolved from the concept of achieving "diversity with ease", by combining classic C-C π-bond click chemistry with recent developments in connective SuFEx-technologies. We showcase 2-Substituted-Alkynyl-1-Sulfonyl Fluorides (SASFs) as a new class of connective hub in concert with a diverse selection of click-cycloaddition processes. Through the selective DOC of SASFs with a range of dipoles and cyclic dienes, we report a diverse click-library of 173 unique functional molecules in minimal synthetic steps. The SuFExable library comprises 10 discrete heterocyclic core structures derived from 1,3- and 1,5-dipoles; while reaction with cyclic dienes yields several three-dimensional bicyclic Diels-Alder adducts. Growing the library to 278 discrete compounds through late-stage modification was made possible through SuFEx click derivatization of the pendant sulfonyl fluoride group in 96 well-plates-demonstrating the versatility of the DOC approach for the rapid synthesis of diverse functional structures. Screening for function against MRSA (USA300) revealed several lead hits with improved activity over methicillin.
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Affiliation(s)
- Christopher J Smedley
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Gencheng Li
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Andrew S Barrow
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Timothy L Gialelis
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Marie-Claire Giel
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Alessandra Ottonello
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Yunfei Cheng
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Seiya Kitamura
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Dennis W Wolan
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - K Barry Sharpless
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - John E Moses
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia.,Cancer Center, Cold Spring Harbor Laboratory, 1 Bungtown Rd, Cold Spring Harbor, NY, 11724, USA
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12
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Giel M, Smedley CJ, Mackie ERR, Guo T, Dong J, Soares da Costa TP, Moses JE. Metal‐Free Synthesis of Functional 1‐Substituted‐1,2,3‐Triazoles from Ethenesulfonyl Fluoride and Organic Azides. Angew Chem Int Ed Engl 2019; 59:1181-1186. [DOI: 10.1002/anie.201912728] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 11/08/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Marie‐Claire Giel
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Christopher J. Smedley
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Emily R. R. Mackie
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Taijie Guo
- Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular Synthesis University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 P. R. China
| | - Jiajia Dong
- Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular Synthesis University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 P. R. China
| | | | - John E. Moses
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
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13
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Giel M, Smedley CJ, Mackie ERR, Guo T, Dong J, Soares da Costa TP, Moses JE. Metal‐Free Synthesis of Functional 1‐Substituted‐1,2,3‐Triazoles from Ethenesulfonyl Fluoride and Organic Azides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912728] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Marie‐Claire Giel
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Christopher J. Smedley
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Emily R. R. Mackie
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Taijie Guo
- Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular Synthesis University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 P. R. China
| | - Jiajia Dong
- Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular Synthesis University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Ling-Ling Road Shanghai 200032 P. R. China
| | | | - John E. Moses
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
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14
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Liu F, Wang H, Li S, Bare GAL, Chen X, Wang C, Moses JE, Wu P, Sharpless KB. Biocompatible SuFEx Click Chemistry: Thionyl Tetrafluoride (SOF 4 )-Derived Connective Hubs for Bioconjugation to DNA and Proteins. Angew Chem Int Ed Engl 2019; 58:8029-8033. [PMID: 30998840 PMCID: PMC6546515 DOI: 10.1002/anie.201902489] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Indexed: 11/08/2022]
Abstract
We report here the development of a suite of biocompatible SuFEx transformations from the SOF4 -derived iminosulfur oxydifluoride hub in aqueous buffer conditions. These biocompatible SuFEx reactions of iminosulfur oxydifluorides (R-N=SOF2 ) with primary amines give sulfamides (8 examples, up to 98 %), while the reaction with secondary amines furnish sulfuramidimidoyl fluoride products (8 examples, up to 97 %). Likewise, under mild buffered conditions, phenols react with the iminosulfur oxydifluorides (Ar-N=SOF2 ) to produce sulfurofluoridoimidates (13 examples, up to 99 %), which can themselves be further modified by nucleophiles. These transformations open the potential for asymmetric and trisubstituted linkages projecting from the sulfur(VI) center, including versatile S-N and S-O connectivity (9 examples, up to 94 %). Finally, the SuFEx bioconjugation of iminosulfur oxydifluorides to amine-tagged single-stranded DNA and to BSA protein demonstrate the potential of SOF4 -derived SuFEx click chemistry in biological applications.
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Affiliation(s)
- Feng Liu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, 201418, P. R. China
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
- Department of Chemistry, Fudan University, Shanghai, 200438, P. R. China
| | - Hua Wang
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Suhua Li
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Grant A L Bare
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Xuemin Chen
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - Chu Wang
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China
| | - John E Moses
- La Trobe Institute For Molecular Science, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Peng Wu
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - K Barry Sharpless
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA, 92037, USA
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15
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Liu F, Wang H, Li S, Bare GAL, Chen X, Wang C, Moses JE, Wu P, Sharpless KB. Back Cover: Biocompatible SuFEx Click Chemistry: Thionyl Tetrafluoride (SOF
4
)‐Derived Connective Hubs for Bioconjugation to DNA and Proteins (Angew. Chem. Int. Ed. 24/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/anie.201906154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Feng Liu
- School of Perfume and Aroma Technology Shanghai Institute of Technology Shanghai 201418 P. R. China
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
- Department of Chemistry Fudan University Shanghai 200438 P. R. China
| | - Hua Wang
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Suhua Li
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
- School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Grant A. L. Bare
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Xuemin Chen
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
| | - Chu Wang
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
| | - John E. Moses
- La Trobe Institute For Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Peng Wu
- Department of Molecular Medicine The Scripps Research Institute La Jolla CA 92037 USA
| | - K. Barry Sharpless
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
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16
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Liu F, Wang H, Li S, Bare GAL, Chen X, Wang C, Moses JE, Wu P, Sharpless KB. Rücktitelbild: Biocompatible SuFEx Click Chemistry: Thionyl Tetrafluoride (SOF
4
)‐Derived Connective Hubs for Bioconjugation to DNA and Proteins (Angew. Chem. 24/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Feng Liu
- School of Perfume and Aroma Technology Shanghai Institute of Technology Shanghai 201418 P. R. China
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
- Department of Chemistry Fudan University Shanghai 200438 P. R. China
| | - Hua Wang
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Suhua Li
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
- School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Grant A. L. Bare
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Xuemin Chen
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
| | - Chu Wang
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
| | - John E. Moses
- La Trobe Institute For Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Peng Wu
- Department of Molecular Medicine The Scripps Research Institute La Jolla CA 92037 USA
| | - K. Barry Sharpless
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
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17
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Liu F, Wang H, Li S, Bare GAL, Chen X, Wang C, Moses JE, Wu P, Sharpless KB. Biocompatible SuFEx Click Chemistry: Thionyl Tetrafluoride (SOF
4
)‐Derived Connective Hubs for Bioconjugation to DNA and Proteins. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902489] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Feng Liu
- School of Perfume and Aroma Technology Shanghai Institute of Technology Shanghai 201418 P. R. China
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
- Department of Chemistry Fudan University Shanghai 200438 P. R. China
| | - Hua Wang
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Suhua Li
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
- School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Grant A. L. Bare
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
| | - Xuemin Chen
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
| | - Chu Wang
- College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China
| | - John E. Moses
- La Trobe Institute For Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Peng Wu
- Department of Molecular Medicine The Scripps Research Institute La Jolla CA 92037 USA
| | - K. Barry Sharpless
- Department of Chemistry The Scripps Research Institute La Jolla CA 92037 USA
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18
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Smedley CJ, Zheng Q, Gao B, Li S, Molino A, Duivenvoorden HM, Parker BS, Wilson DJD, Sharpless KB, Moses JE. Bifluoride Ion Mediated SuFEx Trifluoromethylation of Sulfonyl Fluorides and Iminosulfur Oxydifluorides. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813761] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Christopher J. Smedley
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Qinheng Zheng
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Bing Gao
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Suhua Li
- School of Chemistry Sun Yat-Sen University 135 Xingang Xi Road Guangzhou 510275 P. R. China
| | - Andrew Molino
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | | | - Belinda S. Parker
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - David J. D. Wilson
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - K. Barry Sharpless
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - John E. Moses
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
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19
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Smedley CJ, Zheng Q, Gao B, Li S, Molino A, Duivenvoorden HM, Parker BS, Wilson DJD, Sharpless KB, Moses JE. Bifluoride Ion Mediated SuFEx Trifluoromethylation of Sulfonyl Fluorides and Iminosulfur Oxydifluorides. Angew Chem Int Ed Engl 2019; 58:4552-4556. [DOI: 10.1002/anie.201813761] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/03/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Christopher J. Smedley
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - Qinheng Zheng
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Bing Gao
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Suhua Li
- School of Chemistry Sun Yat-Sen University 135 Xingang Xi Road Guangzhou 510275 P. R. China
| | - Andrew Molino
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | | | - Belinda S. Parker
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - David J. D. Wilson
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
| | - K. Barry Sharpless
- Department of Chemistry The Scripps Research Institute 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - John E. Moses
- La Trobe Institute for Molecular Science La Trobe University Melbourne VIC 3086 Australia
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20
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Randall JD, Eyckens DJ, Stojcevski F, Francis PS, Doeven EH, Barlow AJ, Barrow AS, Arnold CL, Moses JE, Henderson LC. Modification of Carbon Fibre Surfaces by Sulfur-Fluoride Exchange Click Chemistry. Chemphyschem 2018. [DOI: 10.1002/cphc.201800997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- James D. Randall
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Daniel J. Eyckens
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Filip Stojcevski
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Paul S. Francis
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Egan H. Doeven
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Anders J. Barlow
- Centre for Materials and Surface Science and Department of Chemistry and Physics, School of Molecular Sciences; La Trobe University; Melbourne, Victoria, Australia 3086
| | - Andrew S. Barrow
- The Click Chemistry Research Laboratory; La Trobe Institute for Molecular Science, Bundoora; Melbourne, Victoria Australia 3083
| | - Chantelle L. Arnold
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - John E. Moses
- The Click Chemistry Research Laboratory; La Trobe Institute for Molecular Science, Bundoora; Melbourne, Victoria Australia 3083
| | - Luke C. Henderson
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
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21
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Randall JD, Eyckens DJ, Stojcevski F, Francis PS, Doeven EH, Barlow AJ, Barrow AS, Arnold CL, Moses JE, Henderson LC. Front Cover: Modification of Carbon Fibre Surfaces by Sulfur-Fluoride Exchange Click Chemistry (ChemPhysChem 23/2018). Chemphyschem 2018. [DOI: 10.1002/cphc.201801053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- James D. Randall
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Daniel J. Eyckens
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Filip Stojcevski
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Paul S. Francis
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Egan H. Doeven
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - Anders J. Barlow
- Centre for Materials and Surface Science and Department of Chemistry and Physics, School of Molecular Sciences; La Trobe University; Melbourne, Victoria, Australia 3086
| | - Andrew S. Barrow
- The Click Chemistry Research Laboratory; La Trobe Institute for Molecular Science, Bundoora; Melbourne, Victoria Australia 3083
| | - Chantelle L. Arnold
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
| | - John E. Moses
- The Click Chemistry Research Laboratory; La Trobe Institute for Molecular Science, Bundoora; Melbourne, Victoria Australia 3083
| | - Luke C. Henderson
- Deakin University; 75 Pigdons Road, Geelong Waurn Ponds, Victoria Australia 3216
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22
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Randall JD, Eyckens DJ, Stojcevski F, Francis PS, Doeven EH, Barlow AJ, Barrow AS, Arnold CL, Moses JE, Henderson LC. Modification of Carbon Fibre Surfaces by Sulfur-Fluoride Exchange Click Chemistry. Chemphyschem 2018; 19:3176-3181. [PMID: 30253016 DOI: 10.1002/cphc.201800789] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Indexed: 01/28/2023]
Abstract
Technologies that enable surface modification are in high demand and are critical for the implementation of new functional materials and devices. Here, we describe the first modification of a carbon surface (in this case carbon fiber) using the sulfur-fluoride exchange (SuFEx) reaction. The parent sulfur (VI) fluoride moiety can be installed directly to the surface via electrochemical deposition of the fluorosulfate phenyldiazonium tetrafluoroborate salt, or by 'SuFExing' a phenol on the carbon surface followed by treatment of the material with SO2 F2 ; similar to a 'graft to' or 'graft from' functionalization approach. We demonstrate that these SuFEx-able surfaces readily undergo exchange with aryl silyl ethers, and that the subsequent sulfate linkages are themselves stable under electrochemical redox conditions. Finally, we showcase the utility of the SuFEx chemistry by installing a pendant amino group to the fiber surface resulting in interfacial shear strength improvements of up to 130 % in epoxy resin.
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Affiliation(s)
- James D Randall
- Deakin University, 75 Pigdons Road, Geelong, Waurn Ponds, Victoria, Australia, 3216
| | - Daniel J Eyckens
- Deakin University, 75 Pigdons Road, Geelong, Waurn Ponds, Victoria, Australia, 3216
| | - Filip Stojcevski
- Deakin University, 75 Pigdons Road, Geelong, Waurn Ponds, Victoria, Australia, 3216
| | - Paul S Francis
- Deakin University, 75 Pigdons Road, Geelong, Waurn Ponds, Victoria, Australia, 3216
| | - Egan H Doeven
- Deakin University, 75 Pigdons Road, Geelong, Waurn Ponds, Victoria, Australia, 3216
| | - Anders J Barlow
- Centre for Materials and Surface Science and Department of Chemistry and Physics, School of Molecular Sciences, La Trobe University, Melbourne, Victoria, Australia, 3086
| | - Andrew S Barrow
- The Click Chemistry Research Laboratory, La Trobe Institute for Molecular Science, Bundoora, Melbourne, Victoria, Australia, 3083
| | - Chantelle L Arnold
- Deakin University, 75 Pigdons Road, Geelong, Waurn Ponds, Victoria, Australia, 3216
| | - John E Moses
- The Click Chemistry Research Laboratory, La Trobe Institute for Molecular Science, Bundoora, Melbourne, Victoria, Australia, 3083
| | - Luke C Henderson
- Deakin University, 75 Pigdons Road, Geelong, Waurn Ponds, Victoria, Australia, 3216
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23
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Smedley CJ, Stanley PA, Qazzaz ME, Prota AE, Olieric N, Collins H, Eastman H, Barrow AS, Lim KH, Kam TS, Smith BJ, Duivenvoorden HM, Parker BS, Bradshaw TD, Steinmetz MO, Moses JE. Sustainable Syntheses of (-)-Jerantinines A & E and Structural Characterisation of the Jerantinine-Tubulin Complex at the Colchicine Binding Site. Sci Rep 2018; 8:10617. [PMID: 30006510 PMCID: PMC6045569 DOI: 10.1038/s41598-018-28880-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/29/2018] [Indexed: 11/13/2022] Open
Abstract
The jerantinine family of Aspidosperma indole alkaloids from Tabernaemontana corymbosa are potent microtubule-targeting agents with broad spectrum anticancer activity. The natural supply of these precious metabolites has been significantly disrupted due to the inclusion of T. corymbosa on the endangered list of threatened species by the International Union for Conservation of Nature. This report describes the asymmetric syntheses of (-)-jerantinines A and E from sustainably sourced (-)-tabersonine, using a straight-forward and robust biomimetic approach. Biological investigations of synthetic (-)-jerantinine A, along with molecular modelling and X-ray crystallography studies of the tubulin-(-)-jerantinine B acetate complex, advocate an anticancer mode of action of the jerantinines operating via microtubule disruption resulting from binding at the colchicine site. This work lays the foundation for accessing useful quantities of enantiomerically pure jerantinine alkaloids for future development.
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Affiliation(s)
- Christopher J Smedley
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC 3086, Australia
| | - Paul A Stanley
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Mohannad E Qazzaz
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Andrea E Prota
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland
| | - Natacha Olieric
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland
| | - Hilary Collins
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Harry Eastman
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Andrew S Barrow
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC 3086, Australia
| | - Kuan-Hon Lim
- School of Pharmacy, University of Nottingham Malaysia Campus, Jalan Broga, 43500, Semenyih, Selangor, Malaysia
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Brian J Smith
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC 3086, Australia
| | | | - Belinda S Parker
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC 3086, Australia
| | - Tracey D Bradshaw
- School of Pharmacy, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Michel O Steinmetz
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland
- University of Basel, Biozentrum, CH-4056, Basel, Switzerland
| | - John E Moses
- La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC 3086, Australia.
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24
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Sharma P, Bhat SV, Prabhath MRR, Molino A, Nauha E, Wilson DJD, Moses JE. Synthesis of 1,2,4-Triazol-3-imines via Selective Stepwise Cycloaddition of Nitrile Imines with Organo-cyanamides. Org Lett 2018; 20:4263-4266. [DOI: 10.1021/acs.orglett.8b01673] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pallavi Sharma
- La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC 3086, Australia
- School of Chemistry, Joseph Banks Laboratory, University of Lincoln, Lincoln, LN6 7DL, U.K
| | - Shreesha V. Bhat
- School of Chemistry, Joseph Banks Laboratory, University of Lincoln, Lincoln, LN6 7DL, U.K
| | - M. R. Ranga Prabhath
- School of Chemistry, Joseph Banks Laboratory, University of Lincoln, Lincoln, LN6 7DL, U.K
| | - Andrew Molino
- La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC 3086, Australia
| | - Elisa Nauha
- School of Chemistry, Joseph Banks Laboratory, University of Lincoln, Lincoln, LN6 7DL, U.K
| | - David J. D. Wilson
- La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC 3086, Australia
| | - John E. Moses
- La Trobe Institute for Molecular Science, La Trobe University, Bundoora, VIC 3086, Australia
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25
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Gahtory D, Sen R, Pujari S, Li S, Zheng Q, Moses JE, Sharpless KB, Zuilhof H. Quantitative and Orthogonal Formation and Reactivity of SuFEx Platforms. Chemistry 2018; 24:10550-10556. [PMID: 29949211 PMCID: PMC6099289 DOI: 10.1002/chem.201802356] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Indexed: 01/14/2023]
Abstract
The constraints of minute reactant amounts and the impossibility to remove any undesired surface‐bound products during monolayer functionalization of a surface necessitate the selection of efficient, modular and orthogonal reactions that lead to quantitative conversions. Herein, we explore the character of sulfur–fluoride exchange (SuFEx) reactions on a surface, and explore the applicability for quantitative and orthogonal surface functionalization. To this end, we demonstrate the use of ethenesulfonyl fluoride (ESF) as an efficient SuFEx linker for creating “SuFEx‐able” monolayer surfaces, enabling three distinct approaches to utilize SuFEx chemistry on a surface. The first approach relies on a di‐SuFEx loading allowing dual functionalization with a nucleophile, while the two latter approaches focus on dual (CuAAC–SuFEx/SPOCQ–SuFEx) click platforms. The resultant strategies allow facile attachment of two different substrates sequentially on the same platform. Along the way we also demonstrate the Michael addition of ethenesulfonyl fluoride to be a quantitative surface‐bound reaction, indicating significant promise in materials science for this reaction.
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Affiliation(s)
- Digvijay Gahtory
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Rickdeb Sen
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Sidharam Pujari
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE, Wageningen, The Netherlands
| | - Suhua Li
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA.,School of Chemistry, Sun Yat-Sen University, 135 Xingang Xi Road, Guangzhou, 510275, P.R. China
| | - Qinheng Zheng
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - John E Moses
- La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Melbourne, Victoria, 3086, Australia
| | - K Barry Sharpless
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE, Wageningen, The Netherlands.,School of Pharmaceutical Sciences and Technology, Tianjin University, 92 Weijin Road, Tianjin, P.R. China.,Department of Chemical and Materials Engineering, King Abdulaziz University, Jeddah, Saudi Arabia
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26
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Jenner M, Kosol S, Griffiths D, Prasongpholchai P, Manzi L, Barrow AS, Moses JE, Oldham NJ, Lewandowski JR, Challis GL. Mechanism of intersubunit ketosynthase-dehydratase interaction in polyketide synthases. Nat Chem Biol 2018; 14:270-275. [PMID: 29309054 PMCID: PMC5846730 DOI: 10.1038/nchembio.2549] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 11/15/2017] [Indexed: 12/16/2022]
Abstract
Modular polyketide synthases (PKSs) produce numerous structurally complex natural products that have diverse applications in medicine and agriculture. PKSs typically consist of several multienzyme subunits that utilize structurally defined docking domains (DDs) at their N and C termini to ensure correct assembly into functional multiprotein complexes. Here we report a fundamentally different mechanism for subunit assembly in trans-acyltransferase (trans-AT) modular PKSs at the junction between ketosynthase (KS) and dehydratase (DH) domains. This mechanism involves direct interaction of a largely unstructured docking domain (DD) at the C terminus of the KS with the surface of the downstream DH. Acyl transfer assays and mechanism-based crosslinking established that the DD is required for the KS to communicate with the acyl carrier protein appended to the DH. Two distinct regions for binding of the DD to the DH were identified using NMR spectroscopy, carbene footprinting, and mutagenesis, providing a foundation for future elucidation of the molecular basis for interaction specificity.
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Affiliation(s)
- Matthew Jenner
- Department of Chemistry and Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry CV4 7AL, UK
| | - Simone Kosol
- Department of Chemistry and Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry CV4 7AL, UK
| | - Daniel Griffiths
- Department of Chemistry and Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry CV4 7AL, UK
| | - Panward Prasongpholchai
- Department of Chemistry and Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry CV4 7AL, UK
| | - Lucio Manzi
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Andrew S. Barrow
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - John E. Moses
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Neil J. Oldham
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK
| | - Józef R. Lewandowski
- Department of Chemistry and Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry CV4 7AL, UK
| | - Gregory L. Challis
- Department of Chemistry and Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry CV4 7AL, UK
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27
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Gao B, Li S, Wu P, Moses JE, Sharpless KB. SuFEx Chemistry of Thionyl Tetrafluoride (SOF 4 ) with Organolithium Nucleophiles: Synthesis of Sulfonimidoyl Fluorides, Sulfoximines, Sulfonimidamides, and Sulfonimidates. Angew Chem Int Ed Engl 2018; 57:1939-1943. [PMID: 29314580 PMCID: PMC6005182 DOI: 10.1002/anie.201712145] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Indexed: 11/08/2022]
Abstract
Thionyl tetrafluoride (SOF4 ) is a valuable connective gas for sulfur fluoride exchange (SuFEx) click chemistry that enables multidimensional linkages to be created via sulfur-oxygen and sulfur-nitrogen bonds. Herein, we expand the available SuFEx chemistry of SOF4 to include organolithium nucleophiles, and demonstrate, for the first time, the controlled projection of sulfur-carbon links at the sulfur center of SOF4 -derived iminosulfur oxydifluorides (R1 -N=SOF2 ). This method provides rapid and modular access to sulfonimidoyl fluorides (R1 -N=SOFR2 ), another array of versatile SuFEx connectors with readily tunable reactivity of the S-F handle. Divergent connections derived from these valuable sulfonimidoyl fluoride units are also demonstrated, including the synthesis of sulfoximines, sulfonimidamides, and sulfonimidates.
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Affiliation(s)
- Bing Gao
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Suhua Li
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Peng Wu
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - John E Moses
- La Trobe Institute For Molecular Science, La Trobe University, Bundoora, Melbourne, Victoria, 3083, Australia
| | - K Barry Sharpless
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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28
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Gao B, Li S, Wu P, Moses JE, Sharpless KB. SuFEx Chemistry of Thionyl Tetrafluoride (SOF4
) with Organolithium Nucleophiles: Synthesis of Sulfonimidoyl Fluorides, Sulfoximines, Sulfonimidamides, and Sulfonimidates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712145] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Bing Gao
- Department of Chemistry; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Suhua Li
- Department of Chemistry; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Peng Wu
- Department of Molecular Medicine; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - John E. Moses
- La Trobe Institute For Molecular Science; La Trobe University; Bundoora, Melbourne Victoria 3083 Australia
| | - K. Barry Sharpless
- Department of Chemistry; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
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29
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Smedley CJ, Giel MC, Molino A, Barrow AS, Wilson DJD, Moses JE. 1-Bromoethene-1-sulfonyl fluoride (BESF) is another good connective hub for SuFEx click chemistry. Chem Commun (Camb) 2018; 54:6020-6023. [DOI: 10.1039/c8cc03400a] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2-Dibromoethane-1-sulfonyl fluoride (DESF): a bench stable and readily accessible precursor to BESF for the synthesis of β-sultams, sulfonyl fluoride substituted isoxazoles, triazoles and Michael adducts with SuFEx-able pendant sulfonyl fluoride handles.
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Affiliation(s)
| | - Marie-Claire Giel
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - Andrew Molino
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - Andrew S. Barrow
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - David J. D. Wilson
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - John E. Moses
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
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30
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Manzi L, Barrow AS, Hopper JTS, Kaminska R, Kleanthous C, Robinson CV, Moses JE, Oldham NJ. Carbene Footprinting Reveals Binding Interfaces of a Multimeric Membrane-Spanning Protein. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708254] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lucio Manzi
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Andrew S. Barrow
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
- Current address: La Trobe Institute for Molecular Science; La Trobe University; Melbourne Victoria 3086 Australia
| | - Jonathan T. S. Hopper
- OMass Technologies Ltd.; Centre for Innovation and Enterprise; Begbroke Science Park, Woodstock Road Oxford OX5 1PF UK
| | - Renata Kaminska
- Department of Biochemistry; University of Oxford; South Parks Road Oxford OX1 3QU UK
| | - Colin Kleanthous
- Department of Biochemistry; University of Oxford; South Parks Road Oxford OX1 3QU UK
| | - Carol V. Robinson
- Chemistry Research Laboratory; University of Oxford; South Parks Road Oxford OX1 3QZ UK
| | - John E. Moses
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
- Current address: La Trobe Institute for Molecular Science; La Trobe University; Melbourne Victoria 3086 Australia
| | - Neil J. Oldham
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
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31
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Manzi L, Barrow AS, Hopper JTS, Kaminska R, Kleanthous C, Robinson CV, Moses JE, Oldham NJ. Carbene Footprinting Reveals Binding Interfaces of a Multimeric Membrane-Spanning Protein. Angew Chem Int Ed Engl 2017; 56:14873-14877. [DOI: 10.1002/anie.201708254] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Lucio Manzi
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Andrew S. Barrow
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
- Current address: La Trobe Institute for Molecular Science; La Trobe University; Melbourne Victoria 3086 Australia
| | - Jonathan T. S. Hopper
- OMass Technologies Ltd.; Centre for Innovation and Enterprise; Begbroke Science Park, Woodstock Road Oxford OX5 1PF UK
| | - Renata Kaminska
- Department of Biochemistry; University of Oxford; South Parks Road Oxford OX1 3QU UK
| | - Colin Kleanthous
- Department of Biochemistry; University of Oxford; South Parks Road Oxford OX1 3QU UK
| | - Carol V. Robinson
- Chemistry Research Laboratory; University of Oxford; South Parks Road Oxford OX1 3QZ UK
| | - John E. Moses
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
- Current address: La Trobe Institute for Molecular Science; La Trobe University; Melbourne Victoria 3086 Australia
| | - Neil J. Oldham
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
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32
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Smedley CJ, Barrow AS, Spiteri C, Giel MC, Sharma P, Moses JE. Frontispiece: Sulfur-Fluoride Exchange (SuFEx)-Mediated Synthesis of Sterically Hindered and Electron-Deficient Secondary and Tertiary Amides via Acyl Fluoride Intermediates. Chemistry 2017. [DOI: 10.1002/chem.201784262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christopher J. Smedley
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Andrew S. Barrow
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Christian Spiteri
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Marie-Claire Giel
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Pallavi Sharma
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - John E. Moses
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
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33
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Smedley CJ, Barrow AS, Spiteri C, Giel MC, Sharma P, Moses JE. Sulfur-Fluoride Exchange (SuFEx)-Mediated Synthesis of Sterically Hindered and Electron-Deficient Secondary and Tertiary Amides via Acyl Fluoride Intermediates. Chemistry 2017; 23:9990-9995. [DOI: 10.1002/chem.201701552] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Indexed: 01/13/2023]
Affiliation(s)
- Christopher J. Smedley
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Andrew S. Barrow
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Christian Spiteri
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Marie-Claire Giel
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - Pallavi Sharma
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
| | - John E. Moses
- Department of Chemistry and Physics; La Trobe Institute for Molecular Science; La Trobe University; Melbourne, Victoria Australia
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34
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Li S, Wu P, Moses JE, Sharpless KB. Multidimensional SuFEx Click Chemistry: Sequential Sulfur(VI) Fluoride Exchange Connections of Diverse Modules Launched From An SOF4
Hub. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611048] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Suhua Li
- Department of Chemistry and The Skaggs Institute for Chemical Biology; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - Peng Wu
- Department of Chemical Physiology; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
| | - John E. Moses
- Department of Chemistry and The Skaggs Institute for Chemical Biology; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
- School of Chemistry; University of Nottingham; Nottingham NG7 2RD UK
| | - K. Barry Sharpless
- Department of Chemistry and The Skaggs Institute for Chemical Biology; The Scripps Research Institute; 10550 North Torrey Pines Road La Jolla CA 92037 USA
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35
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Li S, Wu P, Moses JE, Sharpless KB. Multidimensional SuFEx Click Chemistry: Sequential Sulfur(VI) Fluoride Exchange Connections of Diverse Modules Launched From An SOF 4 Hub. Angew Chem Int Ed Engl 2017; 56:2903-2908. [PMID: 28165188 DOI: 10.1002/anie.201611048] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Indexed: 01/30/2023]
Abstract
Sulfur(VI) fluoride exchange (SuFEx) is a new family of click chemistry based transformations that enable the synthesis of covalently linked modules via SVI hubs. Here we report thionyl tetrafluoride (SOF4 ) as the first multidimensional SuFEx connector. SOF4 sits between the commercially mass-produced gases SF6 and SO2 F2 , and like them, is readily synthesized on scale. Under SuFEx catalysis conditions, SOF4 reliably seeks out primary amino groups [R-NH2 ] and becomes permanently anchored via a tetrahedral iminosulfur(VI) link: R-N=(O=)S(F)2 . The pendant, prochiral difluoride groups R-N=(O=)SF2 , in turn, offer two further SuFExable handles, which can be sequentially exchanged to create 3-dimensional covalent departure vectors from the tetrahedral sulfur(VI) hub.
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Affiliation(s)
- Suhua Li
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Peng Wu
- Department of Chemical Physiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - John E Moses
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA.,School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | - K Barry Sharpless
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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36
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Silverman SM, Moses JE, Sharpless KB. Reengineering Antibiotics to Combat Bacterial Resistance: Click Chemistry [1,2,3]-Triazole Vancomycin Dimers with Potent Activity against MRSA and VRE. Chemistry 2016; 23:79-83. [PMID: 27747932 DOI: 10.1002/chem.201604765] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Indexed: 01/22/2023]
Abstract
Vancomycin has long been considered a drug of last resort. Its efficiency in treating multiple drug-resistant bacterial infections, particularly methicillin-resistant Staphylococcus aureus (MRSA), has had a profound effect on the treatment of life-threatening infections. However, the emergence of resistance to vancomycin is a cause for significant worldwide concern, prompting the urgent development of new effective treatments for antibiotic resistant bacterial infections. Harnessing the benefits of multivalency and cooperativity against vancomycin-resistant strains, we report a Click Chemistry approach towards reengineered vancomycin derivatives and the synthesis of a number of dimers with increased potency against MRSA and vancomycin resistant Enterococci (VRE; VanB). These semi-synthetic dimeric ligands were linked together with great efficiency using the powerful CuAAC reaction, demonstrating high levels of selectivity and purity.
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Affiliation(s)
- Steven M Silverman
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - John E Moses
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA.,School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | - K Barry Sharpless
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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37
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Abstract
Correction for 'The growing applications of click chemistry' by John E. Moses et al., Chem. Soc. Rev., 2007, 36, 1249-1262.
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Affiliation(s)
- John E Moses
- Department of Pharmaceutical & Biological Chemistry, The School of Pharmacy, University of London, 29-39 Brunswick Square, London, UKWC1N 1AX.
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38
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Han LC, Stanley PA, Wood PJ, Sharma P, Kuruppu AI, Bradshaw TD, Moses JE. Horner-Wadsworth-Emmons approach to piperlongumine analogues with potent anti-cancer activity. Org Biomol Chem 2016; 14:7585-93. [PMID: 27443386 DOI: 10.1039/c6ob01160h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Natural products with anti-cancer activity play a vital role in lead and target discovery. We report here the synthesis and biological evaluation of the plant-derived alkaloid, piperlongumine and analogues. Using a Horner-Wadsworth-Emmons coupling approach, a selection of piperlongumine-like compounds were prepared in good overall yield from a novel phosphonoacetamide reagent. A number of the compounds displayed potent anti-cancer activity against colorectal (HCT 116) and ovarian (IGROV-1) carcinoma cell lines, via a mechanism of action which may involve ROS generation. Contrary to previous reports, no selective action in cancer cell (MRC-5) was observed for piperlongumine analogues.
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Affiliation(s)
- Li-Chen Han
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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39
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A. Stanley P, Spiteri C, C. Moore J, S. Barrow A, Sharma P, E. Moses J. Biomimetic Approaches Towards The Synthesis of Complex Dimeric Natural Products. Curr Pharm Des 2016; 22:1628-57. [DOI: 10.2174/1381612822666160101123106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 12/31/2015] [Indexed: 11/22/2022]
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40
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Zhang E, Tang J, Li S, Wu P, Moses JE, Sharpless KB. Chemoselective Synthesis of Polysubstituted Pyridines from Heteroaryl Fluorosulfates. Chemistry 2016; 22:5692-7. [PMID: 26990693 DOI: 10.1002/chem.201600167] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Indexed: 11/05/2022]
Abstract
A selection of heteroaryl fluorosulfates were readily synthesized using commercial SO2F2 gas. These substrates are highly efficient coupling partners in the Suzuki reaction. Through judicious selection of Pd catalysts the fluorosulfate functionality is differentiated from bromide and chloride; the order of reactivity being: -Br> -OSO2 F> -Cl. Exploiting this trend allowed the stepwise chemoselective synthesis of a number of polysubstituted pyridines, including the drug Etoricoxib.
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Affiliation(s)
- Enxuan Zhang
- Asymchem Life Science (Tianjin) Co., Ltd., 71 7th Avenue, TEDA, Tianjin, 300457, P. R. China.
| | - Jiaze Tang
- Asymchem Life Science (Tianjin) Co., Ltd., 71 7th Avenue, TEDA, Tianjin, 300457, P. R. China
| | - Suhua Li
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Peng Wu
- Department of Chemical Physiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - John E Moses
- School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | - K Barry Sharpless
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA.
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41
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Bhat SV, Robinson D, Moses JE, Sharma P. Synthesis of Oxadiazol-5-imines via the Cyclizative Capture of in Situ Generated Cyanamide Ions and Nitrile Oxides. Org Lett 2016; 18:1100-3. [DOI: 10.1021/acs.orglett.6b00203] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shreesha V Bhat
- School
of Chemistry, Joseph Banks Laboratories, University of Lincoln, Lincoln, LN6 7DL, U.K
| | - David Robinson
- School
of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, U.K
| | - John E Moses
- School
of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, U.K
| | - Pallavi Sharma
- School
of Chemistry, Joseph Banks Laboratories, University of Lincoln, Lincoln, LN6 7DL, U.K
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42
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Cousins ARO, Ritson D, Sharma P, Stevens MFG, Moses JE, Searle MS. Ligand selectivity in stabilising tandem parallel folded G-quadruplex motifs in human telomeric DNA sequences. Chem Commun (Camb) 2015; 50:15202-5. [PMID: 25338751 DOI: 10.1039/c4cc07487d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Biophysical studies of ligand interactions with three human telomeric repeat sequences (d(AGGG(TTAGGG)n, n = 3, 7 and 11)) show that an oxazole-based 'click' ligand, which induces parallel folded quadruplexes, preferentially stabilises longer telomeric repeats providing evidence for selectivity in binding at the interface between tandem quadruplex motifs.
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Affiliation(s)
- Alex R O Cousins
- Centre for Biomolecular Sciences, University Park, University of Nottingham, Nottingham NG7 2RD, UK.
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43
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Dempster S, Harper S, Moses JE, Dreveny I. Structural characterization of the apo form and NADH binary complex of human lactate dehydrogenase. Acta Crystallogr D Biol Crystallogr 2014; 70:1484-90. [PMID: 24816116 PMCID: PMC4014127 DOI: 10.1107/s1399004714005422] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 03/10/2014] [Indexed: 01/28/2023]
Abstract
Lactate dehydrogenase A (LDH-A) is a key enzyme in anaerobic respiration that is predominantly found in skeletal muscle and catalyses the reversible conversion of pyruvate to lactate in the presence of NADH. LDH-A is overexpressed in many tumours and has therefore emerged as an attractive target for anticancer drug discovery. Crystal structures of human LDH-A in the presence of inhibitors have been described, but currently no structures of the apo or binary NADH-bound forms are available for any mammalian LDH-A. Here, the apo structure of human LDH-A was solved at a resolution of 2.1 Å in space group P4122. The active-site loop adopts an open conformation and the packing and crystallization conditions suggest that the crystal form is suitable for soaking experiments. The soaking potential was assessed with the cofactor NADH, which yielded a ligand-bound crystal structure in the absence of any inhibitors. The structures show that NADH binding induces small conformational changes in the active-site loop and an adjacent helix. A comparison with other eukaryotic apo LDH structures reveals the conservation of intra-loop interactions. The structures provide novel insight into cofactor binding and provide the foundation for soaking experiments with fragments and inhibitors.
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Affiliation(s)
- Sally Dempster
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, England
| | - Stephen Harper
- School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, Nottingham NG7 2RD, England
| | - John E. Moses
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, England
| | - Ingrid Dreveny
- School of Pharmacy, Centre for Biomolecular Sciences, University of Nottingham, Nottingham NG7 2RD, England
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Affiliation(s)
- Kimberley J. Powell
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Li-Chen Han
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
| | - Pallavi Sharma
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
- School
of Life Sciences, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, U.K
| | - John E. Moses
- School
of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, U.K
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Moore JC, Davies ES, Walsh DA, Sharma P, Moses JE. Formal synthesis of kingianin A based upon a novel electrochemically-induced radical cation Diels–Alder reaction. Chem Commun (Camb) 2014; 50:12523-5. [DOI: 10.1039/c4cc05906a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The application of electrochemical reactions in natural product synthesis has burgeoned in recent years. We herein report a formal synthesis of the complex and dimeric natural product kingianin A, which employs an electrochemically-mediated radical cation Diels–Alder cycloaddition as the key step.
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Affiliation(s)
| | | | | | - Pallavi Sharma
- School of Chemistry
- University of Nottingham
- Nottingham, UK
- School of Chemistry
- University of Lincoln
| | - John E. Moses
- School of Chemistry
- University of Nottingham
- Nottingham, UK
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46
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Borreguero AM, Sharma P, Spiteri C, Velencoso MM, Carmona MS, Moses JE, Rodríguez JF. A novel click-chemistry approach to flame retardant polyurethanes. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2013.06.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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47
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Abstract
We report here a new catalytic reaction in which, para-nitro azides are acylated by aldehydes to produce amides and molecular nitrogen in a single step. The transformation is believed to proceed via an electron transfer process mediated by the tert-butoxide ion, and catalysed by a thiazolium salt derived species.
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Affiliation(s)
- Giorgio Carbone
- School of Chemistry, University of Nottingham, England, UK NG7 2RD
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48
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Awaad AS, Al-Jaber NA, Moses JE, El-Meligy RM, Zain ME. Antiulcerogenic activities of the extracts and isolated flavonoids of Euphorbia cuneata Vahl. Phytother Res 2012; 27:126-30. [PMID: 23097351 DOI: 10.1002/ptr.4872] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 09/13/2012] [Accepted: 10/04/2012] [Indexed: 11/09/2022]
Abstract
The total alcohol extracts of Euphorbia cuneata Vahl.(Euphorbiaceae) were screened for antiulcerogenic activity using an ethanol-induced ulcer model at doses of 125, 250 and 500 mg/kg. The extracts possessed antiulcerogenic activity in a dose-dependent manner. Four flavonoidal compounds were isolated and identified as naringenin, aromadendrin, apigenin and 4'-O-methoxy-luteolin-7-O-rhamnoglucoside, each demonstrating antiulcerogenic activity with curative ratios ranging from 75.78% to 88.23%. In addition, the alcohol extracts and isolated compounds were shown to scavenge the 1,1-diphenyl,2-picrylhydrazyl radical by different ratio, with the most effective being 4'-O-methoxy-luteolin-7-O-rhamnoglucoside (91.14%). The antioxidant activity of the alcohol extracts and the isolated compounds may explain the antiulcerogenic properties. No side effects were observed on either liver or kidney functions.
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Affiliation(s)
- Amani S Awaad
- Chemistry Department, Faculty of Science, King Saud University, Riyadh, KSA.
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49
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Powell KJ, Sharma P, Richens JL, Davis BM, Moses JE, O'Shea P. Interactions of marine-derived γ-pyrone natural products with phospholipid membranes. Phys Chem Chem Phys 2012; 14:14489-91. [DOI: 10.1039/c2cp42920a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Awaad AS, Al-Jaber NA, Soliman GA, Al-Outhman MR, Zain ME, Moses JE, El-Meligy RM. New biological activities of Casimiroa edulis leaf extract and isolated compounds. Phytother Res 2011; 26:452-7. [PMID: 22173732 DOI: 10.1002/ptr.3690] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Accepted: 09/28/2011] [Indexed: 11/05/2022]
Abstract
The phytochemical investigation of Casimiroa edulis Llave et Lex (Rotaceae) afforded four coumarins: umbelliferone (1), esculetin (2), imperatorin (3) and xanthotoxol (4). The identification of these compounds was achieved by using a combination of m.p., UV, EI-mass, ¹H NMR and ¹³C NMR spectroscopy. Essential oil extracts were analysed by GC/MS leading to the identification of 60 components. Sesquiterpene hydrocarbons accounted for the major make up of the oil. Microbiological screenings of the oil and successive plant fractions were performed, showing promising activity against a number of microorganisms with Minimum inhibitory concentrations (MIC) comparable to the standard antibiotics such as chloramphenicol and kanamycin. The plant ethanol extract (400 mg/kg) and the isolated coumarins (60 mg/kg) showed anticoagulant activity. Analyses to determine the activity of the extracts on liver and kidney function were performed, revealing no negative or detrimental effects.
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Affiliation(s)
- Amani S Awaad
- Chemistry Department, Faculty of Science, King Saud University, Riyadh, KSA.
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