1
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Borsato G, Carnio F, Lunardon S, Moletta M, Pavan G, Terrin F, Scarso A, Plotegher N, Fabris F. A β-Glucosyl Sterol Probe for in situ Fluorescent Labelling in Neuronal Cells to Investigate Neurodegenerative Diseases. Chemistry 2024; 30:e202400778. [PMID: 38770991 DOI: 10.1002/chem.202400778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 05/17/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
A β-glucosyl sterol probe bearing a terminal alkyne moiety for fluorescent tagging enables the investigation of the neuronal and intracellular localization of this class of compounds involved in neurodegenerative diseases. The compound showed localization in the neuronal cells, with marked differences in the uptake and metabolism leading to enhanced persistence with respect to the un-glycosylated sterol analogue. In addition, a different impact was observed towards lysosomes, with the simple sterol probe showing the enlargement of the lysosome structures, while the β-glucosyl sterol was less capable to alter the morphology of this specific organelle.
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Affiliation(s)
- Giuseppe Borsato
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Francesco Carnio
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Sara Lunardon
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Mattia Moletta
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Giulio Pavan
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Francesca Terrin
- Dipartimento di Biologia, Università degli Studi di Padova, viale G. Colombo 3, 35131, Padova, Italy
| | - Alessandro Scarso
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Nicoletta Plotegher
- Dipartimento di Biologia, Università degli Studi di Padova, viale G. Colombo 3, 35131, Padova, Italy
| | - Fabrizio Fabris
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
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2
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Ferrara I, Chesnokov GA, Dittmann S, Blacque O, Sievers S, Gademann K. Formal Single Atom Editing of the Glycosylated Natural Product Fidaxomicin Improves Acid Stability and Retains Antibiotic Activity. JACS AU 2024; 4:2267-2280. [PMID: 38938792 PMCID: PMC11200244 DOI: 10.1021/jacsau.4c00206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/15/2024] [Accepted: 05/06/2024] [Indexed: 06/29/2024]
Abstract
Fidaxomicin (Fdx) constitutes a glycosylated natural product with excellent antibacterial activity against various Gram-positive bacteria but is approved only for Clostridioides difficile infections. Poor water solubility and acid lability preclude its use for other infections. Herein, we describe our strategy to overcome the acid lability by introducing acid-stable S-linked glycosides. We describe the direct, diastereoselective modification of unprotected Fdx without the need to avoid air or moisture. Using our newly established approach, Fdx was converted to the single atom exchanged analogue S-Fdx, in which the acid labile O-glycosidic bond to the noviose sugar was replaced by the acid stable S-glycosidic bond. Studies of the antibacterial activity of a structurally diverse set of thioglycoside derivatives revealed high potency of acyl derivatives of S-Fdx against Clostridioides difficile (MIC range: 0.12-4 μg/mL) and excellent potency against Clostridium perfringens (MIC range: 0.06-0.5 μg/mL).
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Affiliation(s)
- Isabella Ferrara
- Department
of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Gleb A. Chesnokov
- Department
of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Silvia Dittmann
- Department
for Microbial Physiology and Molecular Biology, Institute of Microbiology,
Center for Functional Genomics of Microbes, University of Greifswald, Felix-Hausdorff-Strasse 8, 17489 Greifswald, Germany
| | - Olivier Blacque
- Department
of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Susanne Sievers
- Department
for Microbial Physiology and Molecular Biology, Institute of Microbiology,
Center for Functional Genomics of Microbes, University of Greifswald, Felix-Hausdorff-Strasse 8, 17489 Greifswald, Germany
| | - Karl Gademann
- Department
of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
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3
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Cramer J, Jiang X, Aliu B, Ernst B. Combating DC-SIGN-mediated SARS-CoV-2 dissemination by glycan-mimicking polymers. Arch Pharm (Weinheim) 2024; 357:e2300396. [PMID: 38086006 DOI: 10.1002/ardp.202300396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 04/05/2024]
Abstract
Many viruses exploit the human C-type lectin receptor dendritic cell-specific ICAM-3 grabbing nonintegrin (DC-SIGN) for cell entry and virus dissemination. An inhibition of DC-SIGN-mediated virus attachment by glycan-derived ligands has, thus, emerged as a promising strategy toward broad-spectrum antiviral therapeutics. In this contribution, several cognate fragments of oligomannose- and complex-type glycans grafted onto a poly-l-lysine scaffold are evaluated as polyvalent DC-SIGN ligands. The range of selected carbohydrate epitopes encompasses linear (α- d-Man-(1→2)-α- d-Man, α- d-Man-(1→2)-α- d-Man-(1→2)-α- d-Man-(1→3)-α- d-Man) and branched (α- d-Man-(1→6)-[α- d-Man-(1→3)]-α- d-Man) oligomannosides, as well as α- l-Fuc. The thermodynamics of binding are investigated on a mono- and multivalent level to shed light on the molecular details of the interactions with the tetravalent receptor. Cellular models of virus attachment and DC-SIGN-mediated virus dissemination reveal a high potency of the presented glycopolymers in the low pico- and nanomolar ranges, respectively. The high activity of oligomannose epitopes in combination with the biocompatible properties of the poly- l-lysine scaffold highlights the potential for further preclinical development of polyvalent DC-SIGN ligands.
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Affiliation(s)
- Jonathan Cramer
- Department of Pharmaceutical Sciences, Group Molecular Pharmacy, Pharmazentrum, University of Basel, Basel, Switzerland
- Institute for Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Xiaohua Jiang
- Department of Pharmaceutical Sciences, Group Molecular Pharmacy, Pharmazentrum, University of Basel, Basel, Switzerland
| | - Butrint Aliu
- Department of Pharmaceutical Sciences, Group Molecular Pharmacy, Pharmazentrum, University of Basel, Basel, Switzerland
| | - Beat Ernst
- Department of Pharmaceutical Sciences, Group Molecular Pharmacy, Pharmazentrum, University of Basel, Basel, Switzerland
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4
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Wu KJY, Tresco BIC, Ramkissoon A, Aleksandrova EV, Syroegin EA, See DNY, Liow P, Dittemore GA, Yu M, Testolin G, Mitcheltree MJ, Liu RY, Svetlov MS, Polikanov YS, Myers AG. An antibiotic preorganized for ribosomal binding overcomes antimicrobial resistance. Science 2024; 383:721-726. [PMID: 38359125 DOI: 10.1126/science.adk8013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024]
Abstract
We report the design conception, chemical synthesis, and microbiological evaluation of the bridged macrobicyclic antibiotic cresomycin (CRM), which overcomes evolutionarily diverse forms of antimicrobial resistance that render modern antibiotics ineffective. CRM exhibits in vitro and in vivo efficacy against both Gram-positive and Gram-negative bacteria, including multidrug-resistant strains of Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. We show that CRM is highly preorganized for ribosomal binding by determining its density functional theory-calculated, solution-state, solid-state, and (wild-type) ribosome-bound structures, which all align identically within the macrobicyclic subunits. Lastly, we report two additional x-ray crystal structures of CRM in complex with bacterial ribosomes separately modified by the ribosomal RNA methylases, chloramphenicol-florfenicol resistance (Cfr) and erythromycin-resistance ribosomal RNA methylase (Erm), revealing concessive adjustments by the target and antibiotic that permit CRM to maintain binding where other antibiotics fail.
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Affiliation(s)
- Kelvin J Y Wu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Ben I C Tresco
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Antonio Ramkissoon
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Elena V Aleksandrova
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Egor A Syroegin
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Dominic N Y See
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Priscilla Liow
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Georgia A Dittemore
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Meiyi Yu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Giambattista Testolin
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Matthew J Mitcheltree
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Richard Y Liu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Maxim S Svetlov
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
- Center for Biomolecular Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Yury S Polikanov
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
- Center for Biomolecular Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Andrew G Myers
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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5
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Lo YP, Nivetha N, Velmathi S, Wu SP. A near-infrared fluorescent probe with a substantial Stokes shift designed for the detection and imaging of β-galactosidase within living cells and animals. Methods 2024; 222:10-18. [PMID: 38154527 DOI: 10.1016/j.ymeth.2023.12.004] [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: 11/16/2023] [Revised: 12/19/2023] [Accepted: 12/25/2023] [Indexed: 12/30/2023] Open
Abstract
β-Galactosidase serves as a pivotal biomarker for both cancer and cellular aging. The advancement of fluorescent sensors for tracking β-galactosidase activity is imperative in the realm of cancer diagnosis. We have designed a near-infrared fluorescent probe (PTA-gal) for the detection of β-galactosidase in living systems with large Stokes shifts. PTA-gal exhibits remarkable sensitivity and selectivity in detecting β-galactosidase, producing near-infrared fluorescent signals with a remarkably low detection limit (2.2 × 10-5 U/mL) and a high quantum yield (0.30). Moreover, PTA-gal demonstrates biocompatibility and can effectively detect β-galactosidase in cancer cells as well as within living animals.
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Affiliation(s)
- Yuan-Pin Lo
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Narayanasamy Nivetha
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India
| | - Sivan Velmathi
- Department of Chemistry, National Institute of Technology, Tiruchirappalli 620015, India
| | - Shu-Pao Wu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan; Department of Applied Chemistry, National Chiao Tung University, Hsinchu 30010, Taiwan.
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6
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Bielski R, Mencer D. New syntheses of thiosaccharides utilizing substitution reactions. Carbohydr Res 2023; 532:108915. [PMID: 37597327 DOI: 10.1016/j.carres.2023.108915] [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: 04/30/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/21/2023]
Abstract
Novel synthetic methods published since 2005 affording carbohydrates containing sulfur atom(s) are reviewed. The review is divided to subchapters based on the position of sulfur atom(s) in the sugar molecule. Only those methods that take advantage of substitution are discussed.
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Affiliation(s)
- Roman Bielski
- Department of Pharmaceutical Sciences, Wilkes University, Wilkes-Barre, PA, 18766, United States; Chemventive, LLC Chadds Ford, PA, 19317, United States.
| | - Donald Mencer
- Department of Chemistry & Biochemistry, Wilkes University, Wilkes-Barre, PA, 18766, United States.
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7
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Sun Z, Yan W, Xie L, Liu W, Xu C, Chen FE. A Robust Copper-Catalyzed Cross-Coupling of Glycosyl Thiosulfonate and Boronic Acids Enables the Construction of Thioglycosides. Org Lett 2023; 25:5714-5718. [PMID: 37530179 DOI: 10.1021/acs.orglett.3c01798] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
An efficient and stereoretentive copper-catalyzed cross-coupling of glycosyl thiosulfonate and boronic acid for the construction of thioglycosides is described. The good functional group compatibility of this method allows the preparation of many bioactive aryl/alkenyl thioglycosides, including the hSGLT1 inhibitor.
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Affiliation(s)
- Zuyao Sun
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Weitao Yan
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Lihuang Xie
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Wenchao Liu
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Chunfa Xu
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China
| | - Fen-Er Chen
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Fudan University, Shanghai 200433, China
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8
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Brown KA, Gugger MK, Roberts DS, Moreno D, Chae PS, Ge Y, Jin S. Synthesis, Self-Assembly Properties, and Degradation Characterization of a Nonionic Photocleavable Azo-Sulfide Surfactant Family. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1465-1473. [PMID: 36638323 PMCID: PMC10164600 DOI: 10.1021/acs.langmuir.2c02820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
We report the synthesis and characterization of a new family of maltose-derived nonionic surfactants that contain a photocleavable azo-sulfide linker (mAzo). The self-assembly properties of these surfactants were investigated using surface tension measurements to determine the critical micelle concentration (CMC), dynamic light scattering (DLS) to reveal the hydrodynamic radius of their self-assemblies, and transmission electron microscopy (TEM) to elucidate the micelle morphology. Ultraviolet-visible (UV-visible) spectroscopy confirmed the rapid photodegradation of these surfactants, but surface tension measurements of the surfactant solutions before and after degradation showed unusual degradation products. The photodegradation process was further studied using online liquid chromatography coupled with mass spectrometry (LC-MS),which revealed that these surfactants can form another photo-stable surfactant post-degradation. Finally, traditionally challenging proteins from heart tissue were solubilized using the mAzo surfactants to demonstrate their potential in biological applications.
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Affiliation(s)
- Kyle A. Brown
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, USA
- Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, 53706, USA
| | - Morgan K. Gugger
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, USA
| | - David S. Roberts
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, USA
| | - David Moreno
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, USA
| | - Pil Seok Chae
- Department of Bionano Engineering, Hanyang University, Ansan, 15588, South Korea
| | - Ying Ge
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, USA
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, Wisconsin, 53705, USA
- Human Proteomics Program, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, 53705, USA
| | - Song Jin
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706, USA
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9
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Luo T, Xu TT, Guo YF, Dong H. SnCl 4 Promoted Efficient Cleavage of Acetal/Ketal Groups with the Assistance of Water in CH 2Cl 2. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238258. [PMID: 36500346 PMCID: PMC9736348 DOI: 10.3390/molecules27238258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022]
Abstract
Acetalization and deacetalation are a pair of routine manipulations to protect and deprotect the 4- and 6-hydroxyl groups of glycosides in the synthesis of glycosyl building blocks. In this study, we found that treatment of SnCl4 with various carbohydrates containing acetal/ketal groups with the assistance of water in CH2Cl2 led to deacetalization/deketalization products in almost quantitative yields. In addition, for substrates containing both acetal/ketal and p-methoxylbenzyl groups, we also found that the p-methoxylbenzyl group was selectively cleaved by the use of a catalytic amount of SnCl4, while the acetal/ketal groups remained. Furthermore, based on this, 4,6-benzylidene glycosides can be conveniently converted to 4,6-OAc or 4-OH, 6-OAc glycosides.
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10
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Wang M, Zhang L, Li Y, Gu L. Imidazole Promoted Efficient Anomerization of β‐D‐Glucose Pentaacetate in Solid State and Reaction Mechanism. ChemistrySelect 2022. [DOI: 10.1002/slct.202202508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Meifeng Wang
- Department of Biomedical Engineering Jinan University; #601 Huangpu Avenue West Guangzhou China
- Hunan Engineering Technology Research Center for Comprehensive Development and Utilization of Biomass Resources Hunan University of Science and Engineering Yongzhou 425199 China
- Department of Chemistry Jinan University, #601, Huangpu Avenue West Guangzhou China
| | - Liyin Zhang
- Department of Biomedical Engineering Jinan University; #601 Huangpu Avenue West Guangzhou China
| | - Yiqun Li
- Department of Chemistry Jinan University, #601, Huangpu Avenue West Guangzhou China
| | - Liuqun Gu
- Department of Biomedical Engineering Jinan University; #601 Huangpu Avenue West Guangzhou China
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11
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Morrone-Pozzuto P, Uhrig ML, Agusti R. Synthesis of Oligosaccharides Containing the S-Gal p(α1 → 3)Gal p Unit, Glycomimetic of the Epitope Recognized by Lytic Antibodies. J Org Chem 2022; 87:13455-13468. [PMID: 35775947 DOI: 10.1021/acs.joc.2c01059] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Two important activities take place in the surface of Trypanosoma cruzi, the agent of Chagas disease: the trans-sialidase (TcTS) catalyzes the transfer of sialic acid from the host glycoconjugates to the mucin-like glycoproteins from the parasite and the presence of lytic antibodies recognize the epitope α-Galp(1 → 3)-β-Galp(1 → 4)-α-GlcNAcp. This antigenic structure is known to be present in the parasite mucins; however, in order to be substrates of trans-sialidase, some of the galactose residues should be in the β-Galp configuration. To study the interaction between both activities, it is important to count the synthetic structures as well as the structural-related glycomimetics. With this purpose, we addressed the synthesis of a trisaccharide and two isomeric tetrasaccharides containing the 1-S-α-Galp(1 → 3)-β-Galp motif, the thio analog of the epitope recognized by lytic antibodies. Starting with a common lactose precursor, the sulfur function was incorporated by double inversion of the configuration of the galactose residue that was further glycosylated using different activated donors. Both tetrasaccharides were good acceptors of sialic acid in the reaction catalyzed by TcTS, as determined by high-performance anion exchange chromatography.
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Affiliation(s)
- Pablo Morrone-Pozzuto
- Departamento de Química Orgánica, Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales, C1428EGA Buenos Aires, Argentina.,Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), CONICET- Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
| | - María Laura Uhrig
- Departamento de Química Orgánica, Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales, C1428EGA Buenos Aires, Argentina.,Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), CONICET- Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
| | - Rosalia Agusti
- Departamento de Química Orgánica, Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales, C1428EGA Buenos Aires, Argentina.,Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), CONICET- Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
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12
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Zhong X, Zhao X, Ao J, Huang Y, Liu Y, Zhou S, Li B, Ishiwata A, Fang Q, Yang C, Cai H, Ding F. An experimental and theoretical study on stereocontrolled glycosylations by a “one-pot” procedure. Org Chem Front 2022. [DOI: 10.1039/d2qo00727d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we describe a “one-pot” strategy to install the stereoselectivity of both α- and β-glycosides by changing reaction conditions.
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Affiliation(s)
- Xuemei Zhong
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Xiaoya Zhao
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Jiaming Ao
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Yan Huang
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Yuhua Liu
- School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China
| | - Siai Zhou
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Bizhi Li
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | | | - Qianglin Fang
- School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Chongguang Yang
- School of Public Health (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Hui Cai
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Feiqing Ding
- School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
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13
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Steber HB, Singh Y, Demchenko AV. Bismuth(iii) triflate as a novel and efficient activator for glycosyl halides. Org Biomol Chem 2021; 19:3220-3233. [PMID: 33885577 PMCID: PMC8112625 DOI: 10.1039/d1ob00093d] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Presented herein is the discovery that bismuth(iii) trifluoromethanesulfonate (Bi(OTf)3) is an effective catalyst for the activation of glycosyl bromides and glycosyl chlorides. The key objective for the development of this methodology is to employ only one promoter in the lowest possible amount and to avoid using any additive/co-catalyst/acid scavenger except molecular sieves. Bi(OTf)3 works well in promoting the glycosidation of differentially protected glucosyl, galactosyl, and mannosyl halides with many classes of glycosyl acceptors. Most reactions complete within 1 h in the presence of only 35% of green and light-stable Bi(OTf)3 catalyst.
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Affiliation(s)
- Hayley B Steber
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, Missouri 63121, USA.
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14
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Zullo V, Iuliano A, Guazzelli L. Sugar-Based Ionic Liquids: Multifaceted Challenges and Intriguing Potential. Molecules 2021; 26:2052. [PMID: 33916695 PMCID: PMC8038380 DOI: 10.3390/molecules26072052] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 01/29/2023] Open
Abstract
Carbohydrates represent a promising option in transitioning from oil-based chemical resources to renewable ones, with the goal of developing chemistries for a sustainable future. Cellulose, hemicellulose, and largely available monosaccharides already provide useful chemical building blocks, so-called platform chemicals, such as levulinic acid and hydroxymethyl furfural, as well as solvents like cyrene or gamma-valerolactone. Therefore, there is great anticipation for novel applications involving materials and chemicals derived from sugars. In the field of ionic liquids (ILs), sugar-based ILs have been overlooked for a long time, mainly on account of their multistep demanding preparation. However, exploring new strategies for accessing sugar-based ILs, their study, and their exploitation, are attracting increasing interest. This is due to the growing concerns about the negative (eco)toxicity profile of most ILs in conjunction with their non-sustainable nature. In the present review, a literature survey concerning the development of sugar-based ILs since 2011 is presented. Their preparation strategies and thermal behavior analyses, sorted by sugar type, make up the first two sections with the intention to provide the reader with a useful guide. A final overview of the potential applications of sugar-based ILs and their future perspectives complement the present analysis.
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Affiliation(s)
- Valerio Zullo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124 Pisa, Italy; (V.Z.); (A.I.)
| | - Anna Iuliano
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Moruzzi 13, 56124 Pisa, Italy; (V.Z.); (A.I.)
| | - Lorenzo Guazzelli
- Dipartimento di Farmacia, Università di Pisa, via Bonanno 33, 56126 Pisa, Italy
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15
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See NW, Wimmer N, Krenske EH, Ferro V. A Substituent‐Directed Strategy for the Selective Synthesis of L‐Hexoses: An Expeditious Route to L‐Idose. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nicholas W. See
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane Queensland 4072 Australia
| | - Norbert Wimmer
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane Queensland 4072 Australia
| | - Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane Queensland 4072 Australia
| | - Vito Ferro
- School of Chemistry and Molecular Biosciences The University of Queensland Brisbane Queensland 4072 Australia
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16
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Safir Filho M, Scattolin T, Dao P, Tzouras NV, Benhida R, Saab M, Van Hecke K, Lippmann P, Martin AR, Ott I, Nolan SP. Straightforward synthetic route to gold(i)-thiolato glycoconjugate complexes bearing NHC ligands (NHC = N-heterocyclic carbene) and their promising anticancer activity. NEW J CHEM 2021. [DOI: 10.1039/d1nj02117f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A simple and eco-friendly route to gold–NHC complexes bearing different thiosugars is reported.
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Affiliation(s)
| | - Thomas Scattolin
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Krijgslaan 281 (S-3)
- Ghent
- Belgium
| | - Pascal Dao
- Institut de Chimie de Nice
- Université Côte d’Azur
- CNRS
- UMR7272
- Nice
| | - Nikolaos V. Tzouras
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Krijgslaan 281 (S-3)
- Ghent
- Belgium
| | - Rachid Benhida
- Institut de Chimie de Nice
- Université Côte d’Azur
- CNRS
- UMR7272
- Nice
| | - Marina Saab
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Krijgslaan 281 (S-3)
- Ghent
- Belgium
| | - Kristof Van Hecke
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Krijgslaan 281 (S-3)
- Ghent
- Belgium
| | - Petra Lippmann
- Institute of Medicinal and Pharmaceutical Chemistry
- Technische Universität Braunschweig
- Beethovenstr. 55
- Braunschweig
- Germany
| | | | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry
- Technische Universität Braunschweig
- Beethovenstr. 55
- Braunschweig
- Germany
| | - Steven P. Nolan
- Department of Chemistry and Center for Sustainable Chemistry
- Ghent University
- Krijgslaan 281 (S-3)
- Ghent
- Belgium
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17
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Hribernik N, Tamburrini A, Falletta E, Bernardi A. One pot synthesis of thio-glycosides via aziridine opening reactions. Org Biomol Chem 2021; 19:233-247. [DOI: 10.1039/d0ob01956a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
thio-Glycosides with a pseudo-disaccharide structure are synthesized via aziridine opening reactions starting from glycosyl thioacetates with a one-pot protocol, which affords glycomimetics equipped for easy and stable conjugation to aglycones.
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Affiliation(s)
- Nives Hribernik
- Università degli Studi di Milano
- Dipartimento di Chimica
- 20133 Milano
- Italy
| | - Alice Tamburrini
- Università degli Studi di Milano
- Dipartimento di Chimica
- 20133 Milano
- Italy
| | - Ermelinda Falletta
- Università degli Studi di Milano
- Dipartimento di Chimica
- 20133 Milano
- Italy
| | - Anna Bernardi
- Università degli Studi di Milano
- Dipartimento di Chimica
- 20133 Milano
- Italy
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18
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Sabutski YE, Menchinskaya ES, Shevchenko LS, Chingizova EA, Chingizov AR, Popov RS, Denisenko VA, Mikhailov VV, Aminin DL, Polonik SG. Synthesis and Evaluation of Antimicrobial and Cytotoxic Activity of Oxathiine-Fused Quinone-Thioglucoside Conjugates of Substituted 1,4-Naphthoquinones. Molecules 2020; 25:E3577. [PMID: 32781642 PMCID: PMC7463537 DOI: 10.3390/molecules25163577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/03/2020] [Accepted: 08/05/2020] [Indexed: 12/16/2022] Open
Abstract
A series of new tetracyclic oxathiine-fused quinone-thioglycoside conjugates based on biologically active 1,4-naphthoquinones and 1-mercapto derivatives of per-O-acetyl d-glucose, d-galactose, d-xylose, and l-arabinose have been synthesized, characterized, and evaluated for their cytotoxic and antimicrobial activities. Six tetracyclic conjugates bearing a hydroxyl group in naphthoquinone core showed high cytotoxic activity with EC50 values in the range of 0.3 to 0.9 μM for various types of cancer and normal cells and no hemolytic activity up to 25 μM. The antimicrobial activity of conjugates was screened against Gram-positive bacteria (Staphylococcus aureus, Bacillus cereus), Gram-negative bacteria (Pseudomonas aeruginosa and Escherichia coli), and fungus Candida albicans by the agar diffusion method. The most effective juglone conjugates with d-xylose or l-arabinose moiety and hydroxyl group at C-7 position of naphthoquinone core at concentration 10 µg/well showed antimicrobial activity comparable with antibiotics vancomicin and gentamicin against Gram-positive bacteria strains. In liquid media, juglone-arabinosidic tetracycles showed highest activity with MIC 6.25 µM. Thus, a positive effect of heterocyclization with mercaptosugars on cytotoxic and antimicrobial activity for group of 1,4-naphthoquinones was shown.
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Affiliation(s)
- Yuri E. Sabutski
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Ekaterina S. Menchinskaya
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Ludmila S. Shevchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Ekaterina A. Chingizova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Artur R. Chingizov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Roman S. Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Vladimir A. Denisenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Valery V. Mikhailov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
| | - Dmitry L. Aminin
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Sergey G. Polonik
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch of the Russian Academy of Sciences. Prospekt 100-let Vladivostoku 159, 690022 Vladivostok, Russia; (E.S.M.); (L.S.S.); (E.A.C.); (A.R.C.); (R.S.P.); (V.A.D.); (V.V.M.); (D.L.A.)
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19
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Borbás A. Photoinitiated Thiol-ene Reactions of Enoses: A Powerful Tool for Stereoselective Synthesis of Glycomimetics with Challenging Glycosidic Linkages. Chemistry 2020; 26:6090-6101. [PMID: 31910299 PMCID: PMC7317871 DOI: 10.1002/chem.201905408] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/03/2020] [Indexed: 12/21/2022]
Abstract
Thioglycosides and C-glycosides represent pharmacologically useful classes of glycomimetics that possess a high degree of biological stability. One emerging tool for the stereoselective synthesis of thioglycosides is the photoinitiated addition of thiols to unsaturated sugars. Moreover, thiyl radical-mediated reactions of exo-glycals and 1-substituted endo-glycals offer facile routes to β-C-glycosidic structures. This Concept article summarizes the thiol-ene coupling strategies developed recently by our group and Somsák's group for the synthesis of several kinds of glycomimetics which are difficult to synthesize by conventional methods. One unusual characteristic of the thiol-ene reactions of endo-glycals is that heating inhibits, whereas cooling promotes the reaction. This unique temperature dependence as well as the effects of the enose structures and thiol configurations on the efficacy and stereoselectivity of the reactions are also discussed.
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Affiliation(s)
- Anikó Borbás
- Department of Pharmaceutical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
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20
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Roux A, Loffredo S, Ferrara AL, Murphy PV. Synthesis and biological evaluation of S-simplexides and other analogues of simplexide. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2019-0218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Abstract
Simplexides are natural glycolipids isolated from the marine sponge Plakortis simplex, and contain alkyl 4-O-(α-D-glucopyranosyl)-β-D-galactopyranoside. Simplexides can release of cytokines (IL-6) and chemokines (CXCL-8) from human monocytes and cause the expansion of natural killer T-cells (iNKTs) in vitro, with iNKTs contributing to the sustenance of immune homeostasis. Herein, the stereoselective syntheses of S-glycosidic analogues, i.e. S-simplexides, are described. The routes included Lewis acid promoted anomerisation of glycosyl thiols and thioglycolipids, as well as anomeric S-alkylation. Synthesis of O-glycosidic analogues are included. Heptadecanyl O- and S-glycosides as well as the 17-tritriacontyl 4-O-(α-D-glucopyranosyl)-β-D-galactopyranoside, a component of the natural simplexide isolate, all induced IL-6 and CXCL-8 production at both 10 and 30 μg/mL concentrations from PBMCs whereas the two S-simplexides were inactive. It is speculated that the lack of activity for the S-disaccharide analogue could be due to inhibition of cellular α-glucosidase, preventing degradation of the simplex disaccharide to a simpler galactopyranoside, whereas lack of activity for the S-galactolipid analogue could be due to increased conformational flexibility of S-glycosides. On the other hand, simpler unbranched O- and S-glycolipid analogues were active. Natural simplexide, and a synthetic simplexide, the 18-pentatriacontanyl 4-O-(α-D-glucopyranosyl)-β-D-galactopyranoside, were more potent than the new compounds tested.
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Affiliation(s)
- Amélie Roux
- School of Chemistry, National University of Ireland Galway , University Road , Galway H91 TK33 , Ireland
| | - Stefania Loffredo
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI) , University of Naples Federico II , WAO Center of Excellence , Naples , Italy
| | - Anne Lise Ferrara
- Department of Translational Medical Sciences and Center for Basic and Clinical Immunology Research (CISI) , University of Naples Federico II , WAO Center of Excellence , Naples , Italy
| | - Paul V. Murphy
- School of Chemistry, National University of Ireland Galway , University Road , Galway H91 TK33 , Ireland
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21
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Doyle LM, Meany FB, Murphy PV. Lewis acid promoted anomerisation of alkyl O- and S-xylo-, arabino- and fucopyranosides. Carbohydr Res 2019; 471:85-94. [PMID: 30508660 DOI: 10.1016/j.carres.2018.11.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 11/20/2018] [Accepted: 11/20/2018] [Indexed: 10/27/2022]
Abstract
Pentopyranoside and 6-deoxyhexopyranosides, such as those from d-xylose, l-arabinose and l-fucose are components of natural products, oligosaccharides or polysaccharides. Lewis acid promoted anomerisation of some of their alkyl O- and S-glycopyranosides is reported here. SnCl4 was more successful than TiCl4, with the latter giving the glycosyl chloride by-product in some cases, and both were superior to BF3OEt2. Kinetics study using 1H NMR spectroscopy showed an order of reactivity: O-xylopyranoside > O-arabinopyranoside > O-fucopyranoside. Benzoylated glycosides were more reactive than acetylated glycosides. The reactivity of S-glycosides was greater than that of O-glycosides for both arabinose and fucose derivatives; the reactivity of O- and S-xylopyranosides was similar. The highest stereoselectivities were observed for fucopyranosides. The β-d-xylopyranoside and α-l-arabinopyranoside reactants are conformationally more flexible than β-l-fucopyranosides.
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Affiliation(s)
- Lisa M Doyle
- School of Chemistry, National University of Ireland Galway, University Road, Galway, H91 TK33, Ireland
| | - Fiach B Meany
- School of Chemistry, National University of Ireland Galway, University Road, Galway, H91 TK33, Ireland
| | - Paul V Murphy
- School of Chemistry, National University of Ireland Galway, University Road, Galway, H91 TK33, Ireland.
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22
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Rustler K, Mickert MJ, Nazet J, Merkl R, Gorris HH, König B. Development of photoswitchable inhibitors for β-galactosidase. Org Biomol Chem 2018; 16:7430-7437. [PMID: 30264846 DOI: 10.1039/c8ob02122h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Azobenzenes are of particular interest as a photochromic scaffold for biological applications because of their high fatigue resistance, their large geometrical change between extended (trans) and bent (cis) isomer, and their diverse synthetic accessibility. Despite their wide-spread use, there is no reported photochromic inhibitor of the well-investigated enzyme β-galactosidase, which plays an important role for biochemistry and single molecule studies. Herein, we report the synthesis of photochromic competitive β-galactosidase inhibitors based on the molecular structure of 2-phenylethyl β-d-thiogalactoside (PETG) and 1-amino-1-deoxy-β-d-galactose (β-d-galactosylamine). The thermally highly stable PETG-based azobenzenes show excellent photochromic properties in polar solvents and moderate to high photostationary states (PSS). The optimized compound 37 is a strong competitive inhibitior of β-galactosidase from Escherichia coli and its inhibition constant (Ki) changes between 60 nM and 290 nM upon irradiation with light. Additional docking experiments supported the observed structure-activity relationship.
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Affiliation(s)
- Karin Rustler
- Institute of Organic Chemistry, University of Regensburg, 93053 Regensburg, Germany.
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23
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Kerins L, Byrne S, Gabba A, Murphy PV. Anomer Preferences for Glucuronic and Galacturonic Acid and Derivatives and Influence of Electron-Withdrawing Substituents. J Org Chem 2018; 83:7714-7729. [DOI: 10.1021/acs.joc.8b00610] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Louise Kerins
- School of Chemistry, National University of Ireland Galway, University Road, Galway, Ireland
| | - Sylvester Byrne
- School of Chemistry, National University of Ireland Galway, University Road, Galway, Ireland
| | - Adele Gabba
- School of Chemistry, National University of Ireland Galway, University Road, Galway, Ireland
| | - Paul V. Murphy
- School of Chemistry, National University of Ireland Galway, University Road, Galway, Ireland
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24
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Influence of acyl groups on glucopyranoside reactivity in Lewis acid promoted anomerisation. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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25
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Eszenyi D, Kelemen V, Balogh F, Bege M, Csávás M, Herczegh P, Borbás A. Promotion of a Reaction by Cooling: Stereoselective 1,2‐cis‐α‐Thioglycoconjugation by Thiol‐Ene Coupling at −80 °C. Chemistry 2018; 24:4532-4536. [DOI: 10.1002/chem.201800668] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Dániel Eszenyi
- Department of Pharmaceutical ChemistryUniversity of Debrecen Egyetem tér 1 4032 Debrecen Hungary
| | - Viktor Kelemen
- Department of Pharmaceutical ChemistryUniversity of Debrecen Egyetem tér 1 4032 Debrecen Hungary
| | - Fanny Balogh
- Department of Pharmaceutical ChemistryUniversity of Debrecen Egyetem tér 1 4032 Debrecen Hungary
| | - Miklós Bege
- Department of Pharmaceutical ChemistryUniversity of Debrecen Egyetem tér 1 4032 Debrecen Hungary
| | - Magdolna Csávás
- Department of Pharmaceutical ChemistryUniversity of Debrecen Egyetem tér 1 4032 Debrecen Hungary
| | - Pál Herczegh
- Department of Pharmaceutical ChemistryUniversity of Debrecen Egyetem tér 1 4032 Debrecen Hungary
| | - Anikó Borbás
- Department of Pharmaceutical ChemistryUniversity of Debrecen Egyetem tér 1 4032 Debrecen Hungary
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