1
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Xu Y, Wang X, Zaal EA, Berkers CR, Lorent JH, Heise T, Cox R, Pieters RJ, Breukink E. Specific labeling of newly synthesized lipopolysaccharide via metabolic incorporation of azido-galactose. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159467. [PMID: 38382574 DOI: 10.1016/j.bbalip.2024.159467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/12/2024] [Accepted: 02/17/2024] [Indexed: 02/23/2024]
Abstract
Gram-negative bacteria possess an asymmetric outer membrane (OM) primarily composed of lipopolysaccharides (LPS) on the outer leaflet and phospholipids on the inner leaflet. The outer membrane functions as an effective permeability barrier to compounds such as antibiotics. Studying LPS biosynthesis is therefore helpful to explore novel strategies for new antibiotic development. Metabolic glycan labeling of the bacterial surface has emerged as a powerful method to investigate LPS biosynthesis. However, the previously reported methods of labeling LPS are based on radioactivity or difficult-to-produce analogs of bacterial sugars. In this study, we report on the incorporation of azido galactose into the LPS of the Gram-negative bacteria Escherichia coli and Salmonella typhi via metabolic labeling. As a common sugar analog, azido galactose successfully labeled both O-antigen and core of Salmonella LPS, but not E. coli LPS. This labeling of Salmonella LPS, as shown by SDS-PAGE analysis and fluorescence microscopy, differs from the previously reported labeling of either O-antigen or core of LPS. Our findings are useful for studying LPS biogenesis pathways in Gram-negative bacteria like Salmonella. In addition, our approach is helpful for screening for agents that target LPS biosynthesis as it allows for the detection of newly synthesized LPS that appears in the OM. Furthermore, this approach may also aid in isolating chemically modified LPS for vaccine development or immunotherapy.
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Affiliation(s)
- Yang Xu
- Membrane Biochemistry and Biophysics, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Xiaoqi Wang
- Membrane Biochemistry and Biophysics, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Esther A Zaal
- Division of Cell Biology, Metabolism & Cancer, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Celia R Berkers
- Division of Cell Biology, Metabolism & Cancer, Department of Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 2, 3584 CM Utrecht, the Netherlands
| | - Joseph H Lorent
- Membrane Biochemistry and Biophysics, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Torben Heise
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands
| | - Ruud Cox
- Membrane Biochemistry and Biophysics, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands
| | - Roland J Pieters
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, the Netherlands
| | - Eefjan Breukink
- Membrane Biochemistry and Biophysics, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands.
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2
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Kasdekar N, Spieker MR, Crich D. Practical Synthesis from Streptomycin and Regioselective Partial Deprotections of (-)-(1 R,2 S,3 R,4 R,5 S,6 S)-1,3-Di(deamino)-1,3-diazido-2,5,6-tri- O-benzylstreptamine. J Org Chem 2024; 89:4225-4231. [PMID: 38427951 PMCID: PMC10949228 DOI: 10.1021/acs.joc.3c02922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/09/2024] [Accepted: 02/19/2024] [Indexed: 03/03/2024]
Abstract
We describe the gram-scale synthesis of (-)-(1R,2S,3R,4R,5S,6S)-1,3-di(diamino)-1,3-diazido-2,5,6-tri-O-benzylstreptamine from streptomycin by (i) hydrolysis of the two streptomycin guanidine residues, (ii) reprotection of the amines as azides, (iii) protection of all alcohols as benzyl ethers, and (iv) glycosidic bond cleavage with HCl in methanol. Protocols for regioselective monodebenzylation and regioselective reduction of a single azide in the product are also described, providing four optically pure building blocks for exploitation in novel aminoglycoside synthesis.
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Affiliation(s)
- Niteshlal Kasdekar
- Department
of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - Michael R. Spieker
- Department
of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department
of Biochemistry and Molecular Biology, University
of Georgia, 120 East Green Street, Athens, Georgia 30602, United States
| | - David Crich
- Department
of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department
of Chemistry, University of Georgia, 302 East Campus Road, Athens, Georgia 30602, United States
- Complex
Carbohydrate Research Center, University
of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
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3
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Murphy LD, Huxley KE, Wilding A, Robinson C, Foucart QPO, Willems LI. Synthesis of biolabile thioalkyl-protected phosphates from an easily accessible phosphotriester precursor. Chem Sci 2023; 14:5062-5068. [PMID: 37206382 PMCID: PMC10189884 DOI: 10.1039/d3sc00693j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/19/2023] [Indexed: 05/21/2023] Open
Abstract
Robust methods for the synthesis of mixed phosphotriesters are essential to accelerate the development of novel phosphate-containing bioactive molecules. To enable efficient cellular uptake, phosphate groups are commonly masked with biolabile protecting groups, such as S-acyl-2-thioethyl (SATE) esters, that are removed once the molecule is inside the cell. Typically, bis-SATE-protected phosphates are synthesised through phosphoramidite chemistry. This approach, however, suffers from issues with hazardous reagents and can give unreliable yields, especially when applied to the synthesis of sugar-1-phosphate derivatives as tools for metabolic oligosaccharide engineering. Here, we report the development of an alternative approach that gives access to bis-SATE phosphotriesters in two steps from an easy to synthesise tri(2-bromoethyl)phosphotriester precursor. We demonstrate the viability of this strategy using glucose as a model substrate, onto which a bis-SATE-protected phosphate is introduced either at the anomeric position or at C6. We show compability with various protecting groups and further explore the scope and limitations of the methodology on different substrates, including N-acetylhexosamine and amino acid derivatives. The new approach facilitates the synthesis of bis-SATE-protected phosphoprobes and prodrugs and provides a platform that can boost further studies aimed at exploring the unique potential of sugar phosphates as research tools.
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Affiliation(s)
- Lloyd D Murphy
- York Structural Biology Laboratory and York Biomedical Research Institute, Department of Chemistry, University of York York YO10 5DD UK
| | - Kathryn E Huxley
- York Structural Biology Laboratory and York Biomedical Research Institute, Department of Chemistry, University of York York YO10 5DD UK
| | - Ava Wilding
- Department of Chemistry, University of York York YO10 5DD UK
| | - Cyane Robinson
- Department of Chemistry, University of York York YO10 5DD UK
| | - Quentin P O Foucart
- York Structural Biology Laboratory and York Biomedical Research Institute, Department of Chemistry, University of York York YO10 5DD UK
| | - Lianne I Willems
- York Structural Biology Laboratory and York Biomedical Research Institute, Department of Chemistry, University of York York YO10 5DD UK
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4
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Pirrone MG, Ande C, Haldimann K, Hobbie SN, Vasella A, Böttger EC, Crich D. Importance of Co-operative Hydrogen Bonding in the Apramycin-Ribosomal Decoding A-Site Interaction. ChemMedChem 2023; 18:e202200486. [PMID: 36198651 PMCID: PMC10092258 DOI: 10.1002/cmdc.202200486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/05/2022] [Indexed: 01/24/2023]
Abstract
An intramolecular hydrogen bond between the protonated equatorial 7'-methylamino group of apramycin and the vicinal axial 6'-hydroxy group acidifies the 6'-hydroxy group leading to a strong hydrogen bond to A1408 in the ribosomal drug binding pocket in the decoding A site of the small ribosomal subunit. In 6'-epiapramycin, the trans-nature of the 6'-hydroxy group and the 7'-methylamino group results in a much weaker intramolecular hydrogen bond, and a consequently weaker cooperative hydrogen bonding network with A1408, resulting overall in reduced inhibition of protein synthesis and antibacterial activity.
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Affiliation(s)
- Michael G Pirrone
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, 30602, Athens, GA, USA
| | - Chennaiah Ande
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, 30602, Athens, GA, USA
| | - Klara Haldimann
- Institute of Medical Microbiology, University of Zurich, Gloriastrasse 28, 8006, Zürich, Switzerland
| | - Sven N Hobbie
- Institute of Medical Microbiology, University of Zurich, Gloriastrasse 28, 8006, Zürich, Switzerland
| | - Andrea Vasella
- Organic Chemistry Institute, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093, Zürich, Switzerland
| | - Erik C Böttger
- Institute of Medical Microbiology, University of Zurich, Gloriastrasse 28, 8006, Zürich, Switzerland
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, Department of Chemistry, Complex Carbohydrate Research Center, University of Georgia, 250 West Green Street, 30602, Athens, GA, USA
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5
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Jana S, Crich D. Synthesis of Gentamicin Minor Components: Gentamicin C1a and Gentamicin C2b. Org Lett 2022; 24:8564-8567. [DOI: 10.1021/acs.orglett.2c03616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Santanu Jana
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 302 East Campus Road, Athens, Georgia 30602, United States
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6
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Li Y, Wan TB, Guo B, Qi XW, Zhu C, Shen MH, Xu HD. Quaternization of azido-N-heteroarenes with Meerwein reagent: a straightforward synthesis of 2-azido(benzo)imidazolium and related azido-N-heteroarenium tetrafluoroborates. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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7
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Siyabalapitiya Arachchige S, Crich D. Syntheses of Legionaminic Acid, Pseudaminic Acid, Acetaminic Acid, 8- epi-Acetaminic Acid, and 8- epi-Legionaminic Acid Glycosyl Donors from N-Acetylneuraminic Acid by Side Chain Exchange. Org Lett 2022; 24:2998-3002. [PMID: 35420827 PMCID: PMC9066425 DOI: 10.1021/acs.orglett.2c00894] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Metaperiodate cleavage of the glycerol side chain from an N-acetyl neuraminic acid-derived thioglycoside and condensation with the two enantiomers of the Ellman sulfinamide afford two diastereomeric N-sulfinylimines from which bacterial sialic acid donors with the legionaminic and acetaminic acid configurations and their 8-epi-isomers are obtained by samarium iodide-mediated coupling with acetaldehyde and subsequent manipulations. A variation on the theme, with inversion of the configuration at C5, similarly provides two differentially protected pseudaminic acid donors.
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Affiliation(s)
- Sameera Siyabalapitiya Arachchige
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States.,Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States.,Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States.,Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States.,Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
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8
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Efficient Synthesis of Azido Sugars Using Fluorosulfuryl Azide Diazotransfer Reagent. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Matheau-Raven D, Boulter E, Rogova T, Dixon DJ. A Three-Component Ugi-Type Reaction of N-Carbamoyl Imines Enables a Broad Scope Primary α-Amino 1,3,4-Oxadiazole Synthesis. Org Lett 2021; 23:8209-8213. [PMID: 34633203 DOI: 10.1021/acs.orglett.1c02945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A general synthesis of N-protected primary α-amino 1,3,4-oxadiazoles, from N-carbamoyl imines, N-isocyaniminotriphenylphosphorane (NIITP), and carboxylic acids, is described. Featuring an isocyanide addition reaction with N-carbamoyl imines, this efficient three-component Ugi-type reaction was found to be broad in scope with respect to imine, and carboxylic acid coupling partners. Furthermore, the versatility of this method was demonstrated by α-amino 1,2,4-triazole synthesis, the late-stage functionalization of seven drug molecules, and five divergent derivatizations of a primary α-amino 1,3,4-oxadiazole.
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Affiliation(s)
- Daniel Matheau-Raven
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Elizabeth Boulter
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Tatiana Rogova
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Darren J Dixon
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, U.K
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10
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Moreira R, Noden M, Taylor SD. Synthesis of Azido Acids and Their Application in the Preparation of Complex Peptides. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractAzido acids are important synthons for the synthesis of complex peptides. As a protecting group, the azide moiety is atom-efficient, easy to install and can be reduced in the presence of many other protecting groups, making it ideal for the synthesis of branched and/or cyclic peptides. α-Azido acids are less bulky than urethane-protected counterparts and react more effectively in coupling reactions of difficult-to-form peptide and ester bonds. Azido acids can also be used to form azoles on complex intermediates. This review covers the synthesis of azido acids and their application to the total synthesis of complex peptide natural products.1 Introduction2 Synthesis of α-Azido Acids2.1 From α-Amino Acids or Esters2.2 Via α-Substitution2.3 Via Electrophilic Azidation2.4 Via Condensation of N-2-Azidoacetyl-4-Phenylthiazolidin- 2-Thi one Enolates with Aldehydes and Acetals2.5 Synthesis of α,β-Unsaturated α-Azido Acids and Esters3 Synthesis of β-Azido Acids3.1 Preparation of Azidoalanine and 3-Azido-2-aminobutanoic Acids3.2 General Approaches to Preparing β-Azido Acids Other Than Azi doalanine and AABA4 Azido Acids in Total Synthesis4.1 α-Azido Acids4.2 β-Azido Acids and Azido Acids Containing an Azide on the Side
Chain5 Conclusions
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11
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Wellhöfer I, Beck J, Frydenvang K, Bräse S, Olsen CA. Increasing the Functional Group Diversity in Helical β-Peptoids: Achievement of Solvent- and pH-Dependent Folding. J Org Chem 2020; 85:10466-10478. [PMID: 32806085 DOI: 10.1021/acs.joc.0c00780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report the synthesis of a series of bis-functionalized β-peptoid oligomers of the hexamer length. This was achieved by synthesizing and incorporating protected amino- or azido-functionalized chiral building blocks into precursor oligomers by a trimer segment coupling strategy. The resulting hexamers were readily elaborated to provide target compounds displaying amino groups, carboxy groups, hydroxy groups, or triazolo-pyridines, which should enable metal ion binding. Analysis of the novel hexamers by circular dichroism (CD) spectroscopy and 1H-13C heteronuclear single quantum coherence nuclear magnetic resonance (HSQC NMR) spectroscopy revealed robust helical folding propensity in acetonitrile. CD analysis showed a solvent-dependent degree of helical content in the structural ensembles when adding different ratios of protic solvents including an aqueous buffer. These studies were enabled by a substantial increase in solubility compared to previously analyzed β-peptoid oligomers. This also allowed for the investigation of the effect of pH on the folding propensity of the amino- and carboxy-functionalized oligomers, respectively. Interestingly, we could show a reversible effect of sequentially adding acid and base, resulting in a switching between compositions of folded ensembles with varying helical content. We envision that the present discoveries can form the basis for the development of functional peptidomimetic materials responsive to external stimuli.
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Affiliation(s)
- Isabelle Wellhöfer
- Center for Biopharmaceuticals & Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen DK-2100, Denmark
| | - Janina Beck
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - Karla Frydenvang
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen DK-2100, Denmark
| | - Stefan Bräse
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen D-76344, Germany.,Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - Christian A Olsen
- Center for Biopharmaceuticals & Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen DK-2100, Denmark
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12
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Pirrone MG, Matsushita T, Vasella A, Crich D. Stereospecific synthesis of methyl 2-amino-2,4-dideoxy-6S-deuterio-α-D-xylo-hexopyranoside and methyl 2-amino-2,4-dideoxy-6S-deuterio-4-propyl-α-d-glucopyranoside: Side chain conformation of the novel aminoglycoside antibiotic propylamycin. Carbohydr Res 2020; 491:107984. [PMID: 32217361 DOI: 10.1016/j.carres.2020.107984] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/11/2020] [Accepted: 03/12/2020] [Indexed: 12/20/2022]
Abstract
The stereospecific syntheses of methyl 2-amino-2,4-dideoxy-4-C-propyl-α-d-glucopyranoside and of methyl 2-amino-2,4-dideoxy-α-D-xylo-hexopyranoside and of their 6S-deuterioisotopomers are described as models for ring I of the aminoglycoside antibiotics propylamycin and 4'-deoxyparomomycin, respectively. Analysis of the 1H NMR spectra of these compounds and of methyl 2-amino-2-deoxy-α-d-glucopyranoside, a model for paromomycin itself, reveals that neither deoxygenation at the 4-position, nor substitution of the C-O bond at the 4-postion by a C-C bond significantly changes the distribution of the side chain population between the three possible staggered conformations. From this it is concluded that the beneficial effect on antiribosomal and antibacterial activity of the propyl group in propylamycin does not derive from a change in side chain conformation. Rather, enhanced basicity of the ring oxygen and increased hydrophobicity and/or solvation effects are implicated.
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Affiliation(s)
- Michael G Pirrone
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA, 30602, USA; Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA, 30602, USA; Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA, 30602, USA; Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, 48202, USA
| | - Takahiko Matsushita
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, 48202, USA
| | - Andrea Vasella
- Organic Chemistry Laboratory, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093, Zürich, Switzerland
| | - David Crich
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, GA, 30602, USA; Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, GA, 30602, USA; Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA, 30602, USA; Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI, 48202, USA.
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13
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Sati GC, Sarpe VA, Furukawa T, Mondal S, Mantovani M, Hobbie SN, Vasella A, Böttger EC, Crich D. Modification at the 2'-Position of the 4,5-Series of 2-Deoxystreptamine Aminoglycoside Antibiotics To Resist Aminoglycoside Modifying Enzymes and Increase Ribosomal Target Selectivity. ACS Infect Dis 2019; 5:1718-1730. [PMID: 31436080 PMCID: PMC6788953 DOI: 10.1021/acsinfecdis.9b00128] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
![]()
A series
of derivatives of the 4,5-disubstituted class of 2-deoxystreptamine
aminoglycoside antibiotics neomycin, paromomycin, and ribostamycin
was prepared and assayed for (i) their ability to inhibit protein
synthesis by bacterial ribosomes and by engineered bacterial ribosomes
carrying eukaryotic decoding A sites, (ii) antibacterial activity
against wild type Gram negative and positive pathogens, and (iii)
overcoming resistance due to the presence of aminoacyl transferases
acting at the 2′-position. The presence of five suitably positioned
residual basic amino groups was found to be necessary for activity
to be retained upon removal or alkylation of the 2′-position
amine. As alkylation of the 2′-amino group overcomes the action
of resistance determinants acting at that position and in addition
results in increased selectivity for the prokaryotic over eukaryotic
ribosomes, it constitutes an attractive modification for introduction
into next generation aminoglycosides. In the neomycin series, the
installation of small (formamide) or basic (glycinamide) amido groups
on the 2′-amino group is tolerated.
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Affiliation(s)
- Girish C. Sati
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Vikram A. Sarpe
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Takayuki Furukawa
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Sujit Mondal
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Matilde Mantovani
- Institute of Medical Microbiology, University of Zurich, 28 Gloriastrasse, 8006 Zürich, Switzerland
| | - Sven N. Hobbie
- Institute of Medical Microbiology, University of Zurich, 28 Gloriastrasse, 8006 Zürich, Switzerland
| | - Andrea Vasella
- Organic Chemistry Laboratory, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland
| | - Erik C. Böttger
- Institute of Medical Microbiology, University of Zurich, 28 Gloriastrasse, 8006 Zürich, Switzerland
| | - David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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14
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Modular click chemistry libraries for functional screens using a diazotizing reagent. Nature 2019; 574:86-89. [PMID: 31578481 DOI: 10.1038/s41586-019-1589-1] [Citation(s) in RCA: 174] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/08/2019] [Indexed: 12/20/2022]
Abstract
Click chemistry is a concept in which modular synthesis is used to rapidly find new molecules with desirable properties1. Copper(I)-catalysed azide-alkyne cycloaddition (CuAAC) triazole annulation and sulfur(VI) fluoride exchange (SuFEx) catalysis are widely regarded as click reactions2-4, providing rapid access to their products in yields approaching 100% while being largely orthogonal to other reactions. However, in the case of CuAAC reactions, the availability of azide reagents is limited owing to their potential toxicity and the risk of explosion involved in their preparation. Here we report another reaction to add to the click reaction family: the formation of azides from primary amines, one of the most abundant functional groups5. The reaction uses just one equivalent of a simple diazotizing species, fluorosulfuryl azide6-11 (FSO2N3), and enables the preparation of over 1,200 azides on 96-well plates in a safe and practical manner. This reliable transformation is a powerful tool for the CuAAC triazole annulation, the most widely used click reaction at present. This method greatly expands the number of accessible azides and 1,2,3-triazoles and, given the ubiquity of the CuAAC reaction, it should find application in organic synthesis, medicinal chemistry, chemical biology and materials science.
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15
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Li M, Yu F, Yao C, Wang PG, Liu Y, Zhao W. Synthetic and immunological studies on trimeric MUC1 immunodominant motif antigen-based anti-cancer vaccine candidates. Org Biomol Chem 2019; 16:993-999. [PMID: 29345713 DOI: 10.1039/c7ob02976d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Therapeutic vaccines have been regarded as a very promising treatment modality against cancer. Tumor-associated MUC1 is a promising antigen for the design of antitumor vaccines. However, body's immune tolerance and low immunogenicity of MUC1 glycopeptides limited their use as effective antigen epitopes of therapeutic vaccines. To solve this problem, we chose the immune dominant region of MUC1 VNTRs. We designed and synthesized its linear trivalent glycopeptide fragments and coupled the fragments with BSA. Immunological evaluation indicated that the antibodies induced by glycosylated MUC1 based vaccine 11 had a stronger binding than non-glycosylated 10. The novel constructed antigen epitopes have the potential to overcome the weak immunogenicity of natural MUC1 glycopeptides and deserve further research.
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Affiliation(s)
- Mingjing Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Haihe Education Park, 38 Tongyan Road, Tianjin 300353, P.R. China
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16
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Zou S, Wang S, Xi C. ROTf-induced annulation of heteroatom reagents and unsaturated substrates leading to cyclic compounds. ROYAL SOCIETY OPEN SCIENCE 2018; 5:181389. [PMID: 30564422 PMCID: PMC6281944 DOI: 10.1098/rsos.181389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 10/16/2018] [Indexed: 05/03/2023]
Abstract
The development of metal-free organic reactions is one of the hotspots in the synthesis of cyclic compounds. ROTf (alkyl trifluoromethanesulfonates), due to their good electrophilicity, are powerful alkylating reagents at heteroatoms such as nitrogen, oxygen, sulfur and phosphorus to induce an electrophilic centre for carbon-carbon or carbon-heteroatom bond formation. Inspired by this chemistry, a variety of research concentrating on heterocycles synthesis has been carried out. In this review, we mainly summarize the ROTf-induced annulation of heteroatom reagents such as nitriles, carbodiimides, azobenzenes, isothiocyanates, aldehydes, isocyanates and phosphaalkene with themselves or alkynes to afford cyclic compounds.
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Affiliation(s)
- Song Zou
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Sheng Wang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
| | - Chanjuan Xi
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
- Author for correspondence: Chanjuan Xi e-mail:
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17
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Dong X, Deng G, Xu J, Li H, Zeng X. Decomposition of Sulfonyl Azide Isocyanate and Sulfonyl Diazide: The Oxygen-Shifted Curtius Rearrangement via Sulfonyl Nitrenes. J Phys Chem A 2018; 122:8511-8519. [DOI: 10.1021/acs.jpca.8b06655] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xuelin Dong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Guohai Deng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Jian Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Hongmin Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
| | - Xiaoqing Zeng
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 215123 Suzhou, China
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18
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Sultan S, Shah BA. Carbon‐Carbon and Carbon‐Heteroatom Bond Formation Reactions Using Unsaturated Carbon Compounds. CHEM REC 2018; 19:644-660. [DOI: 10.1002/tcr.201800095] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 09/12/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Shaista Sultan
- Natural Product Chemistry Division and AcSIRCSIR-Indian Institute of Integrative Medicine Jammu- 180001
| | - Bhahwal Ali Shah
- Natural Product Chemistry Division and AcSIRCSIR-Indian Institute of Integrative Medicine Jammu- 180001
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19
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Xie S, Yan Z, Li Y, Song Q, Ma M. Intrinsically Safe and Shelf-Stable Diazo-Transfer Reagent for Fast Synthesis of Diazo Compounds. J Org Chem 2018; 83:10916-10921. [PMID: 30122034 DOI: 10.1021/acs.joc.8b01587] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a crystalline compound 2-azido-4,6-dimethoxy-1,3,5-triazine (ADT) as an intrinsically safe, highly efficient, and shelf-stable diazo-transfer reagent. Because the decomposition of ADT is an endothermal process (Δ H = 30.3 kJ mol-1), ADT is intrinsically nonexplosive, as proved by thermal, friction, and impact tests. The diazo-transfer reaction based on ADT gives diazo compounds in excellent yields within several minutes at room temperature. ADT is very stable upon >1 year storage under air at room temperature.
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Affiliation(s)
- Shibo Xie
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Ziqiang Yan
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Yuanheng Li
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Qun Song
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Mingming Ma
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Innovation Center of Chemistry for Energy Materials), Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
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20
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Design, synthesis and biological activity of novel demethylvancomycin dimers against vancomycin-resistant enterococcus faecalis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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BURTOLOSO ANTONIOC, MOMO PATRÍCIAB, NOVAIS GRAZIELEL. Traditional and New methods for the Preparation of Diazocarbonyl Compounds. ACTA ACUST UNITED AC 2018; 90:859-893. [DOI: 10.1590/0001-3765201820170768] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/16/2017] [Indexed: 12/14/2022]
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22
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Recent progress in insertion and cyclopropanation reactions of metal carbenoids from α-diazocarbonyl compounds. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3000-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Liang H, DeMeester KE, Hou CW, Parent MA, Caplan JL, Grimes CL. Metabolic labelling of the carbohydrate core in bacterial peptidoglycan and its applications. Nat Commun 2017; 8:15015. [PMID: 28425464 PMCID: PMC5411481 DOI: 10.1038/ncomms15015] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 02/20/2017] [Indexed: 02/07/2023] Open
Abstract
Bacterial cells are surrounded by a polymer known as peptidoglycan (PG), which protects the cell from changes in osmotic pressure and small molecule insults. A component of this material, N-acetyl-muramic acid (NAM), serves as a core structural element for innate immune recognition of PG fragments. We report the synthesis of modifiable NAM carbohydrate derivatives and the installation of these building blocks into the backbone of Gram-positive and Gram-negative bacterial PG utilizing metabolic cell wall recycling and biosynthetic machineries. Whole cells are labelled via click chemistry and visualized using super-resolution microscopy, revealing higher resolution PG structural details and allowing the cell wall biosynthesis, as well as its destruction in immune cells, to be tracked. This study will assist in the future identification of mechanisms that the immune system uses to recognize bacteria, glean information about fundamental cell wall architecture and aid in the design of novel antibiotics. N-acetyl-muramic acid (NAM) is a core component of the bacterial peptidoglycan (PG) cell wall, and is recognised by the innate immune system. Here the authors engineer Gram-negative and Gram-positive bacteria to incorporate a modified NAM into the backbone of PG, which can be labelled with click chemistry for imaging and tracking.
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Affiliation(s)
- Hai Liang
- Department of Chemistry and Biochemistry, University of Delaware, 134 Brown Lab, Newark, Delaware 19716, USA
| | - Kristen E DeMeester
- Department of Chemistry and Biochemistry, University of Delaware, 134 Brown Lab, Newark, Delaware 19716, USA
| | - Ching-Wen Hou
- Department of Chemistry and Biochemistry, University of Delaware, 134 Brown Lab, Newark, Delaware 19716, USA
| | - Michelle A Parent
- Department of Medical Laboratory Sciences, University of Delaware, Newark, Delaware 19716, USA.,Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, USA
| | - Jeffrey L Caplan
- Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, USA.,Bioimaging Center, Delaware Biotechnology Institute, Newark, Delaware 19716, USA
| | - Catherine L Grimes
- Department of Chemistry and Biochemistry, University of Delaware, 134 Brown Lab, Newark, Delaware 19716, USA.,Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, USA
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24
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Kinens A, Sejejs M, Kamlet AS, Piotrowski DW, Vedejs E, Suna E. Development of a Chiral DMAP Catalyst for the Dynamic Kinetic Resolution of Azole Hemiaminals. J Org Chem 2017; 82:869-886. [DOI: 10.1021/acs.joc.6b02955] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Artis Kinens
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Marcis Sejejs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
- University of Latvia, Department of Chemistry, Jelgavas 1, LV-1004 Riga, Latvia
| | - Adam S. Kamlet
- Worldwide
Medicinal Chemistry, Pfizer, Inc., Eastern Point Road, Groton, Connecticut 06340, United States
| | - David W. Piotrowski
- Worldwide
Medicinal Chemistry, Pfizer, Inc., Eastern Point Road, Groton, Connecticut 06340, United States
| | - Edwin Vedejs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
- University of Latvia, Department of Chemistry, Jelgavas 1, LV-1004 Riga, Latvia
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25
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Ben Haj Salah K, Legrand B, Das S, Martinez J, Inguimbert N. Straightforward strategy to substitute amide bonds by 1,2,3-triazoles in peptaibols analogs using Aibψ[Tz]-Xaa dipeptides. Biopolymers 2016; 104:611-21. [PMID: 25784277 DOI: 10.1002/bip.22641] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 03/02/2015] [Accepted: 03/07/2015] [Indexed: 02/04/2023]
Abstract
Structured peptides gained more attention over a decade because of their biological properties, biocompatibility and ability to act as modulators of protein/protein interactions, antibiotics, analgesics, immunosuppressants or as imaging agents to cite a few relevant applications. However, their poor bioavalability due in part to the susceptibility of the peptide bond to proteolytic cleavages often impaired their development and considerably limited their therapeutic use. To circumvent these problems, many efforts are undertaken to discover stable amide bond mimics resistant to proteolytic degradation. Among them the 1,2,3-triazole emerged as a highly stable analogue of the trans-peptide bond to generate bioactive peptides. Here we report a convenient approach to readily substitute amide bonds by triazole rings in Aib-containing peptides using Aibψ[Tz]-Xaa dipeptide-like units. We defined their application in solid phase synthesis and generated short model peptide sequences to study the impact of the triazole incorporation on their conformations in solution by circular dichroism and nuclear magnetic resonance spectroscopies.
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Affiliation(s)
- Khoubaib Ben Haj Salah
- Université de Perpignan Via Domitia, Centre de Recherche Insulaire et Observatoire de l'Environnement (CRIOBE), USR CNRS 3278, centre de phytopharmacie, bâtiment T, 58 avenue P. Alduy, 66860, Perpignan, France
| | - Baptiste Legrand
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 5, France
| | - Sanjit Das
- Université de Perpignan Via Domitia, Centre de Recherche Insulaire et Observatoire de l'Environnement (CRIOBE), USR CNRS 3278, centre de phytopharmacie, bâtiment T, 58 avenue P. Alduy, 66860, Perpignan, France
| | - Jean Martinez
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier, 15 avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 5, France
| | - Nicolas Inguimbert
- Université de Perpignan Via Domitia, Centre de Recherche Insulaire et Observatoire de l'Environnement (CRIOBE), USR CNRS 3278, centre de phytopharmacie, bâtiment T, 58 avenue P. Alduy, 66860, Perpignan, France
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26
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Potter GT, Jayson GC, Miller GJ, Gardiner JM. An Updated Synthesis of the Diazo-Transfer Reagent Imidazole-1-sulfonyl Azide Hydrogen Sulfate. J Org Chem 2016; 81:3443-6. [DOI: 10.1021/acs.joc.6b00177] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Garrett T. Potter
- Manchester
Institute of Biotechnology and School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - Gordon C. Jayson
- Institute
of Cancer Sciences, Faculty of Medical and Human Sciences, The University of Manchester, Manchester M20 4BX, U.K
| | - Gavin J. Miller
- Manchester
Institute of Biotechnology and School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
| | - John M. Gardiner
- Manchester
Institute of Biotechnology and School of Chemistry, The University of Manchester, 131 Princess Street, Manchester M1 7DN, U.K
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27
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Castro V, Rodríguez H, Albericio F. CuAAC: An Efficient Click Chemistry Reaction on Solid Phase. ACS COMBINATORIAL SCIENCE 2016; 18:1-14. [PMID: 26652044 DOI: 10.1021/acscombsci.5b00087] [Citation(s) in RCA: 145] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Click chemistry is an approach that uses efficient and reliable reactions, such as Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC), to bind two molecular building blocks. CuAAC has broad applications in medicinal chemistry and other fields of chemistry. This review describes the general features and applications of CuAAC in solid-phase synthesis (CuAAC-SP), highlighting the suitability of this kind of reaction for peptides, nucleotides, small molecules, supramolecular structures, and polymers, among others. This versatile reaction is expected to become pivotal for meeting future challenges in solid-phase chemistry.
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Affiliation(s)
- Vida Castro
- Institute
for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology 08028-Barcelona, Spain
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, 08028-Barcelona, Spain
| | - Hortensia Rodríguez
- Institute
for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology 08028-Barcelona, Spain
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, 08028-Barcelona, Spain
- School
of Chemistry, Yachay Tech, Yachay City of Knowledge, Urcuqui, Ecuador
| | - Fernando Albericio
- Institute
for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology 08028-Barcelona, Spain
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, 08028-Barcelona, Spain
- Department
of Organic Chemistry, University of Barcelona, 08028-Barcelona, Spain
- School of Chemistry & Physics, University of KwaZulu-Natal, 4001-Durban, South Africa
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28
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Kato T, Yang G, Teo Y, Juskeviciene R, Perez-Fernandez D, Shinde HM, Salian S, Bernet B, Vasella A, Böttger EC, Crich D. Synthesis and Antiribosomal Activities of 4'-O-, 6'-O-, 4″-O-, 4',6'-O- and 4″,6″-O-Derivatives in the Kanamycin Series Indicate Differing Target Selectivity Patterns between the 4,5- and 4,6-Series of Disubstituted 2-Deoxystreptamine Aminoglycoside Antibiotics. ACS Infect Dis 2015; 1:479-86. [PMID: 27623314 DOI: 10.1021/acsinfecdis.5b00069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Chemistry for the efficient modification of the kanamycin class of 4,6-aminoglycosides at the 4'-position is presented. In all kanamycins but kanamycin B, 4'-O-alkylation is strongly detrimental to antiribosomal and antibacterial activity. Ethylation of kanamycin B at the 4″-position entails little loss of antiribosomal and antibacterial activity, but no increase of ribosomal selectivity. These results are contrasted with those for the 4,5-aminoglycosides, where 4'-O-alkylation of paromomycin causes only a minimal loss of activity but results in a significant increase in selectivity with a concomitant loss of ototoxicity.
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Affiliation(s)
- Takayuki Kato
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Guanyu Yang
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Youjin Teo
- Institut für Medizinische Mikrobiologie, Universität Zürich, 8006 Zürich, Switzerland
| | - Reda Juskeviciene
- Institut für Medizinische Mikrobiologie, Universität Zürich, 8006 Zürich, Switzerland
| | | | - Harish M. Shinde
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - Sumanth Salian
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - Bruno Bernet
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - Andrea Vasella
- Laboratorium für Organische Chemie, ETH Zürich, 8093 Zürich, Switzerland
| | - Erik C. Böttger
- Institut für Medizinische Mikrobiologie, Universität Zürich, 8006 Zürich, Switzerland
| | - David Crich
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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29
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Ford A, Miel H, Ring A, Slattery CN, Maguire AR, McKervey MA. Modern Organic Synthesis with α-Diazocarbonyl Compounds. Chem Rev 2015; 115:9981-10080. [PMID: 26284754 DOI: 10.1021/acs.chemrev.5b00121] [Citation(s) in RCA: 1090] [Impact Index Per Article: 121.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Hugues Miel
- Almac Discovery Ltd. , David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | | | | | | | - M Anthony McKervey
- Almac Sciences Ltd. , Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
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30
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Sonousi A, Crich D. Selective Protection of Secondary Amines as the N-Phenyltriazenes. Application to Aminoglycoside Antibiotics. Org Lett 2015; 17:4006-9. [PMID: 26294060 DOI: 10.1021/acs.orglett.5b01902] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Selective protection of secondary amines as triazenes in the presence of multiple primary amines is demonstrated, with subsequent protection of the primary amines as either azides or carbamates in the same pot. Aminoglycoside antibiotic examples reveal broad functional group compatibility. The triazene group is removed with trifluoroacetic acid and, because of the low barrier to rotation, affords sharp (1)H NMR spectra at room temperature.
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Affiliation(s)
- Amr Sonousi
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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31
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Melnyk JE, Mohanan V, Schaefer AK, Hou CW, Grimes CL. Peptidoglycan Modifications Tune the Stability and Function of the Innate Immune Receptor Nod2. J Am Chem Soc 2015; 137:6987-90. [PMID: 26035228 PMCID: PMC4878121 DOI: 10.1021/jacs.5b01607] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Natural modifications of peptidoglycan modulate the innate immune response. Peptidoglycan derivatives activate this response via the intracellular innate immune receptor, Nod2. To probe how these modifications alter the response, a novel and efficient carbohydrate synthesis was developed to allow for late-stage modification of the amine at the 2-position. Modification of the carbohydrate was found to be important for stabilizing Nod2 and generating the proper response. The native Nod2 ligands demonstrate a significant increase in the cellular stability of Nod2. Moreover, changing the identity of the natural ligands at the carbohydrate 2-position allows for the Nod2-dependent immune response to be either up-regulated or down-regulated. The ligand structure can be adjusted to tune the Nod2 response, suggesting that other innate immune receptors and their ligands could use a similar strategy.
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Affiliation(s)
- James E. Melnyk
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Vishnu Mohanan
- Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, United States
| | - Amy K. Schaefer
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Ching-Wen Hou
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Catherine Leimkuhler Grimes
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
- Department of Biological Sciences, University of Delaware, Newark, Delaware 19716, United States
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32
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Liu K, Ma B, Guo X, Ma D, Meng L, Zeng G, Yang F, Li G, Shi Z, Feng S. Syntheses, structures, luminescence and magnetic properties of eleven coordination polymers constructed by a N,N′-sulfuryldiimidazole ligand. CrystEngComm 2015. [DOI: 10.1039/c5ce00807g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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33
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Joseph AA, Dhurandhare VM, Chang CW, Verma VP, Mishra GP, Ku CC, Lin CC, Wang CC. Chemoselective per-O-trimethylsilylation and homogeneous N-functionalisation of amino sugars. Chem Commun (Camb) 2015; 51:104-6. [DOI: 10.1039/c4cc06645f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
HomogeneousN-functionalisation of amino sugars can be achievedviaefficient CH3CN-promoted hexamethyldisilazane per-O-trimethylsilylation.
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Affiliation(s)
- A. Abragam Joseph
- Institute of Chemistry
- Academia Sinica
- Taipei 115
- Taiwan
- Department of Chemistry
| | - Vijay M. Dhurandhare
- Institute of Chemistry
- Academia Sinica
- Taipei 115
- Taiwan
- Chemical Biology and Molecular Biophysics Program
| | - Chun-Wei Chang
- Institute of Chemistry
- Academia Sinica
- Taipei 115
- Taiwan
- Chemical Biology and Molecular Biophysics Program
| | | | | | - Chiao-Chu Ku
- Institute of Chemistry
- Academia Sinica
- Taipei 115
- Taiwan
| | - Chun-Cheng Lin
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 300
- Taiwan
| | - Cheng-Chung Wang
- Institute of Chemistry
- Academia Sinica
- Taipei 115
- Taiwan
- Chemical Biology and Molecular Biophysics Program
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34
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Synthesis of novel carbohydrate-based valine-derived formamide organocatalysts by CuAAC click chemistry and their application in asymmetric reduction of imines with trichlorosilane. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Jepsen TH, Kristensen JL. In Situ Generation of the Ohira–Bestmann Reagent from Stable Sulfonyl Azide: Scalable Synthesis of Alkynes from Aldehydes. J Org Chem 2014; 79:9423-6. [DOI: 10.1021/jo501803f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Tue Heesgaard Jepsen
- Department of Drug Design
and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Jesper Langgaard Kristensen
- Department of Drug Design
and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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36
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Stevens MY, Sawant RT, Odell LR. Synthesis of Sulfonyl Azides via Diazotransfer using an Imidazole-1-sulfonyl Azide Salt: Scope and 15N NMR Labeling Experiments. J Org Chem 2014; 79:4826-31. [DOI: 10.1021/jo500553q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Marc Y. Stevens
- Organic
Pharmaceutical Chemistry,
Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P.O.
Box 574, SE-751 23 Uppsala, Sweden
| | - Rajiv T. Sawant
- Organic
Pharmaceutical Chemistry,
Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P.O.
Box 574, SE-751 23 Uppsala, Sweden
| | - Luke R. Odell
- Organic
Pharmaceutical Chemistry,
Department of Medicinal Chemistry, Uppsala Biomedical Center, Uppsala University, P.O.
Box 574, SE-751 23 Uppsala, Sweden
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37
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Li T, Ye H, Cao X, Wang J, Liu Y, Zhou L, Liu Q, Wang W, Shen J, Zhao W, Wang P. Total Synthesis of Anticoagulant Pentasaccharide Fondaparinux. ChemMedChem 2014; 9:1071-80. [DOI: 10.1002/cmdc.201400019] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Indexed: 12/26/2022]
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38
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Doherty W, James J, Evans P, Martin L, Adler N, Nolan D, Knox A. Preparation, anti-trypanosomal activity and localisation of a series of dipeptide-based vinyl sulfones. Org Biomol Chem 2014; 12:7561-71. [DOI: 10.1039/c4ob01412j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
An improved, Weinreb amide-based, synthesis of anti-trypanosomal lysine-containing vinyl sulfones is described incorporating, as a feature, diversity at the ε-lysine amino group.
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Affiliation(s)
- William Doherty
- Centre for Synthesis and Chemical Biology
- School of Chemistry and Chemical Biology
- University College Dublin
- Dublin 4, Ireland
| | - Jinju James
- Centre for Synthesis and Chemical Biology
- School of Chemistry and Chemical Biology
- University College Dublin
- Dublin 4, Ireland
| | - Paul Evans
- Centre for Synthesis and Chemical Biology
- School of Chemistry and Chemical Biology
- University College Dublin
- Dublin 4, Ireland
| | - Laura Martin
- School of Biochemistry and Immunology
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
- Dublin 2, Ireland
| | - Nikoletta Adler
- School of Biochemistry and Immunology
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
- Dublin 2, Ireland
| | - Derek Nolan
- School of Biochemistry and Immunology
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
- Dublin 2, Ireland
| | - Andrew Knox
- School of Biochemistry and Immunology
- Trinity Biomedical Sciences Institute
- Trinity College Dublin
- Dublin 2, Ireland
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39
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Dufour E, Moni L, Bonnat L, Chierici S, Garcia J. ‘Clickable’ 2,5-diketopiperazines as scaffolds for ligation of biomolecules: their use in Aβ inhibitor assembly. Org Biomol Chem 2014; 12:4964-74. [DOI: 10.1039/c4ob00541d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The synthesis of 1,3,6-trisubstituted-2,5-diketopiperazine scaffolds bearing up to three ‘clickable’ sites for further oxime bond or alkyne–azide cycloaddition ligations is described.
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Affiliation(s)
- E. Dufour
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
| | - L. Moni
- Università degli Studi di Genova
- Dipartimento di Chimica e Chimica Industriale
- 16146 Genova, Italy
| | - L. Bonnat
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
| | - S. Chierici
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
| | - J. Garcia
- Département de Chimie Moléculaire
- CNRS UMR 5250
- ICMG FR 2607
- Equipe I2BM
- Université Joseph Fourier
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40
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Lagisetti C, Palacios G, Goronga T, Freeman B, Caufield W, Webb TR. Optimization of antitumor modulators of pre-mRNA splicing. J Med Chem 2013; 56:10033-44. [PMID: 24325474 DOI: 10.1021/jm401370h] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The spliceosome regulates pre-mRNA splicing, which is a critical process in normal mammalian cells. Recently, recurrent mutations in numerous spliceosomal proteins have been associated with a number of cancers. Previously, natural product antitumor agents have been shown to interact with one of the proteins that is subject to recurrent mutations (SF3B1). We report the optimization of a class of tumor-selective spliceosome modulators that demonstrate significant in vivo antitumor activity. This optimization culminated in the discovery of sudemycin D6, which shows potent cytotoxic activity in the melanoma line SK-MEL-2 (IC50 = 39 nM) and other tumor cell lines, including JeKo-1 (IC50 = 22 nM), HeLa (IC50 = 50 nM), and SK-N-AS (IC50 = 81 nM). We also report improved processes for the synthesis of these compounds. Our work supports the idea that sudemycin D6 is worthy of further investigation as a novel preclinical anticancer agent with application in the treatment of numerous human cancers.
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Affiliation(s)
- Chandraiah Lagisetti
- Department of Chemical Biology and Therapeutics, ‡Preclinical PK Shared Resource, St. Jude Children's Research Hospital , 262 Danny Thomas Place, Memphis, Tennessee 38105-2794, United States
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41
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Ahad AM, Jensen SM, Jewett JC. A traceless Staudinger reagent to deliver diazirines. Org Lett 2013; 15:5060-3. [PMID: 24059816 DOI: 10.1021/ol402404n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A triarylphosphine reagent that reacts with organic azides to install amide-linked diazirines is reported. This traceless Staudinger reagent reacts with complex organic azides to yield amide-linked diazirines, thus expanding the scope of the utility of both azide and diazirine chemistry.
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Affiliation(s)
- Ali M Ahad
- University of Arizona , 1306 East University Boulevard, Tucson, Arizona 85721, United States
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42
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Tanimoto H, Kakiuchi K. Recent Applications and Developments of Organic Azides in Total Synthesis of Natural Products. Nat Prod Commun 2013. [DOI: 10.1177/1934578x1300800730] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Organic azides have been exploited since their discovery because of their high reactivities. Various organic reactions using azides have been synthetically applied in chemical biology pharmaceuticals medicinal and agricultural areas. In this review we present some recent applications and developments of organic azides in the total synthesis of natural products (mostly within five years) especially alkaloids. We focus not only on application examples of organic azides but also show their preparation methods including recently reported procedures concerning their decomposing and reducing methods in the syntheses of bioactive molecules.
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Affiliation(s)
- Hiroki Tanimoto
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
| | - Kiyomi Kakiuchi
- Graduate School of Materials Science Nara Institute of Science and Technology (NAIST) 8916-5 Takayama-cho Ikoma Nara 630-0192 Japan
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