1
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Ghorai J, Almounajed L, Noori S, Nguyen HM. Cooperative Catalysis in Stereoselective O- and N-Glycosylations with Glycosyl Trichloroacetimidates Mediated by Singly Protonated Phenanthrolinium Salt and Trichloroacetamide. J Am Chem Soc 2024; 146:34413-34426. [PMID: 39630085 DOI: 10.1021/jacs.4c10633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2024]
Abstract
The development of small-molecule catalysts that can effectively activate both reacting partners simultaneously represents a pivotal pursuit in advancing the field of stereoselective glycosylation reactions. We report herein the development of the singly protonated form of readily available phenanthroline as an effective cooperative catalyst that facilitates the coupling of a wide variety of aliphatic alcohols, phenols, and aromatic amines with α-glycosyl trichloroacetimidate donors. The glycosylation reaction likely proceeds via an SN2-like mechanism, generating β-selective glycoside products. The developed protocol provides access to O- and N-glycosides in good yields with excellent levels of β-selectivity and enables late-stage functionalization of O- and N-glycosides via cross-coupling reactions. Importantly, this method exhibits excellent β-selectivity that is unattainable through a C2-O-acyl neighboring group participation strategy, especially in the case of glycosyl donors already containing a C2 heteroatom or sugar unit. Kinetic studies demonstrate that the byproduct trichloroacetamide group plays a previously undiscovered pivotal role in influencing the reactivity and selectivity of the reaction. A proposed mechanism involving simultaneous activation of the glycosyl donor and acceptor by the singly protonated phenanthrolinium salt catalyst with the assistance of the trichloroacetamide group is supported by kinetic analysis and preliminary computational studies. This cooperative catalysis process involves four consecutive hydrogen bond interactions. The first interaction occurs between the carbonyl oxygen of the trichloroacetamide group and the hydroxyl group of alcohol nucleophile (C═O···HO). The second involves the trichloroacetamide-NH2 forming a hydrogen bond with the nitrogen atom of the phenanthroline (NH···N). The third involves the donor trichloroacetimidate (═NH) engaging in a hydrogen bond interaction with the phenanthrolinium-NH (NH···N═H). Lastly, the protonated trichloroacetimidate-NH2 forms a hydrogen bond with the fluorine atom of the tetrafluoroborate ion.
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Affiliation(s)
- Jayanta Ghorai
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Leila Almounajed
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Suendues Noori
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Hien M Nguyen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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2
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Liu Y, Sweet IR, Boons GJ. 2,2-Difluoro Derivatives of Fucose Can Inhibit Cell Surface Fucosylation without Causing Slow Transfer to Acceptors. JACS AU 2024; 4:3953-3963. [PMID: 39483231 PMCID: PMC11522930 DOI: 10.1021/jacsau.4c00681] [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: 07/29/2024] [Revised: 09/10/2024] [Accepted: 09/11/2024] [Indexed: 11/03/2024]
Abstract
Fucosyl transferases (FUTs) are enzymes that transfer fucose (Fuc) from GDP-Fuc to acceptor substrates, resulting in fucosylated glycoconjugates that are involved in myriad physiological and disease processes. Previously, it has been shown that per-O-acetylated 2-F-Fuc can be taken up by cells and converted into GDP-2-F-Fuc, which is a competitive inhibitor of FUTs. Furthermore, it can act as a feedback inhibitor of de novo biosynthesis of GDP-Fuc resulting in reduced glycoconjugate fucosylation. However, GDP-2-F-Fuc and several other reported analogues are slow substrates, which can result in unintended incorporation of unnatural fucosides. Here, we describe the design, synthesis, and biological evaluation of GDP-2,2-di-F-Fuc and the corresponding prodrugs as an inhibitor of FUTs. This compound lacks the slow transfer activity observed for the monofluorinated counterpart. Furthermore, it was found that GDP-2-F-Fuc and GDP-2,2-di-F-Fuc have similar Ki values for the various human fucosyl transferases, while the corresponding phosphate prodrugs exhibit substantial differences in inhibition of cell surface fucosylation. Quantitative sugar nucleotide analysis by Liquid chromatography-mass spectrometry (LC-MS) indicates that the 2,2-di-F-Fuc prodrug has substantially greater feedback inhibitory activity. It was also found that by controlling the concentration of the inhibitor, varying degrees of inhibition of the biosynthesis of different types of fucosylated N-glycan structures can be achieved. These findings open new avenues for the modulation of fucosylation of cell surface glycoconjugates.
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Affiliation(s)
- Yanyan Liu
- Chemical
Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Igor R. Sweet
- Chemical
Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
| | - Geert-Jan Boons
- Chemical
Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, 3584 CG Utrecht, The Netherlands
- Complex
Carbohydrate Research Center, University
of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
- Bijvoet
Center for Biomolecular Research, Utrecht
University, 3584 CG Utrecht, The Netherlands
- Chemistry
Department, The University of Georgia, Athens, Georgia 30602, United States
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3
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Jordan C, Hayashi T, Löbbert A, Fan J, Teschers CS, Siebold K, Aufiero M, Pape F, Campbell E, Axer A, Bussmann K, Bergander K, Köhnke J, Gossert AD, Gilmour R. Probing the Origin of Affinity in the GM1-Cholera Toxin Complex through Site-Selective Editing with Fluorine. ACS CENTRAL SCIENCE 2024; 10:1481-1489. [PMID: 39220706 PMCID: PMC11363330 DOI: 10.1021/acscentsci.4c00622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 06/18/2024] [Accepted: 06/24/2024] [Indexed: 09/04/2024]
Abstract
Carbohydrates regulate an inimitable spectrum of biological functions, yet successfully leveraging this therapeutic avenue continues to be frustrated by low affinities with glycan-specific proteins. A conspicuous exception is the interaction of monosialotetrahexosylganglioside (GM1) with the carbohydrate-recognition domain of cholera toxin from Vibrio cholerae: this is one of the strongest protein-carbohydrate interactions known. To establish the importance of a long-discussed key hydrogen bond between C2 of the terminal galactose of GM1 and the B subunit pentamer of cholera toxin (CTB5), the total synthesis of a selectively fluorinated GM1 epitope was conducted in 19 steps. This process of molecular editing (Oδ-H → Fδ-) strategically deletes the hydrogen bond donor while retaining the localized partial charge of the substituent. Comparison of the binding affinity of F-GM1/CTB5 with native GM1, the GM1 carbohydrate epitope, and meta-mononitrophenyl-α-galactoside (MNPG) revealed a trend that fully supports the importance of this key interaction. These NMR data suggest that F-GM1 binds in a closely similar conformation as native GM1. Crystallographic analyses of the complex also confirm that the OH → F bioisosteric exchange at C2 of the terminal galactose induces a ring conformation that eliminates key hydrogen bonds: these interactions are compensated for by inter- and intramolecular fluorine-specific interactions.
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Affiliation(s)
- Christina Jordan
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Taiki Hayashi
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | | | - Jingran Fan
- Institut
für Lebensmittelchemie, Leibniz Universität
Hannover, 30167 Hannover, Germany
| | | | - Kathrin Siebold
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Marialuisa Aufiero
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Felix Pape
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Emma Campbell
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Alexander Axer
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Kathrin Bussmann
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Klaus Bergander
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
| | - Jesko Köhnke
- Institut
für Lebensmittelchemie, Leibniz Universität
Hannover, 30167 Hannover, Germany
| | | | - Ryan Gilmour
- Institute
for Organic Chemistry, University of Münster, 48149 Münster, Germany
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4
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Jordan C, Siebold K, Priegue P, Seeberger PH, Gilmour R. A Fluorinated Sialic Acid Vaccine Lead Against Meningitis B and C. J Am Chem Soc 2024; 146:15366-15375. [PMID: 38768956 PMCID: PMC11157539 DOI: 10.1021/jacs.4c03179] [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: 03/04/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/22/2024]
Abstract
Inspired by the specificity of α-(2,9)-sialyl epitopes in bacterial capsular polysaccharides (CPS), a doubly fluorinated disaccharide has been validated as a vaccine lead against Neisseria meningitidis serogroups C and/or B. Emulating the importance of fluorine in drug discovery, this molecular editing approach serves a multitude of purposes, which range from controlling α-selective chemical sialylation to mitigating competing elimination. Conjugation of the disialoside with two carrier proteins (CRM197 and PorA) enabled a semisynthetic vaccine to be generated; this was then investigated in six groups of six mice. The individual levels of antibodies formed were compared and classified as highly glycan-specific and protective. All glycoconjugates induced a stable and long-term IgG response and binding to the native CPS epitope was achieved. The generated antibodies were protective against MenC and/or MenB; this was validated in vitro by SBA and OPKA assays. By merging the fluorinated glycan epitope of MenC with an outer cell membrane protein of MenB, a bivalent vaccine against both serogroups was created. It is envisaged that validation of this synthetic, fluorinated disialoside bioisostere as a potent antigen will open new therapeutic avenues.
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Affiliation(s)
- Christina Jordan
- Institute
for Organic Chemistry, University of Münster, Corrensstraße 36, Münster 48149, Germany
| | - Kathrin Siebold
- Institute
for Organic Chemistry, University of Münster, Corrensstraße 36, Münster 48149, Germany
| | - Patricia Priegue
- Department
of Biomolecular Systems, Max Planck Institute
for Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany
- Freie
Universität Berlin, Institute of
Chemistry and Biochemistry, Arnimallee 22, Berlin 14195, Germany
| | - Peter H. Seeberger
- Department
of Biomolecular Systems, Max Planck Institute
for Colloids and Interfaces, Am Mühlenberg 1, Potsdam 14476, Germany
- Freie
Universität Berlin, Institute of
Chemistry and Biochemistry, Arnimallee 22, Berlin 14195, Germany
| | - Ryan Gilmour
- Institute
for Organic Chemistry, University of Münster, Corrensstraße 36, Münster 48149, Germany
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5
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López M, Huelgas G, Sánchez M, Armenta A, Mendoza A, Lozada-Ramírez JD, Anaya de Parrodi C. Use of Novel Homochiral Thioureas Camphor Derived as Asymmetric Organocatalysts in the Stereoselective Formation of Glycosidic Bonds. Molecules 2024; 29:811. [PMID: 38398563 PMCID: PMC10893146 DOI: 10.3390/molecules29040811] [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: 01/15/2024] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
We synthesized six new camphor-derived homochiral thioureas 1-6, from commercially available (1R)-(-)-camphorquinone. These new compounds 1-6 were evaluated as asymmetric organocatalysts in the stereoselective formation of glycosidic bonds, with 2,3,4,6-tetra-O-benzyl-D-glucopyranosyl and 2,3,4,6-tetra-O-benzyl-D-galactopyranosyl trichloroacetimidates as donors, and several alcohols as glycosyl acceptors, such as methanol, ethanol, 1-propanol, 1-butanol, 1-octanol, iso-propanol, tert-butanol, cyclohexanol, phenol, 1-naphtol, and 2-naphtol. Optimization of the asymmetric glycosylation reaction was achieved by modifying reaction conditions such as solvent, additive, loading of catalyst, temperature, and time of reaction. The best result was obtained with 2,3,4,6-tetra-O-benzyl-D-galactopyranosyl trichloroacetimidates, using 15 mol% of organocatalyst 1, in the presence of 2 equiv of MeOH in solvent-free conditions at room temperature for 1.5 h, affording the glycosidic compound in a 99% yield and 1:73 α:β stereoselectivity; under the same reaction conditions, without using a catalyst, the obtained stereoselectivity was 1:35 α:β. Computational calculations prior to the formation of the products were modeled, using density functional theory, M06-2X/6-31G(d,p) and M06-2X/6-311++G(2d,2p) methods. We observed that the preference for β glycoside formation, through a stereoselective inverted substitution, relies on steric effects and the formation of hydrogen bonds between thiourea 1 and methanol in the complex formed.
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Affiliation(s)
- Mildred López
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
| | - Gabriela Huelgas
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
| | - Mario Sánchez
- Centro de Investigación en Materiales Avanzados S.C., Alianza Norte 202, PIIT, Apodaca 66628, Mexico; (M.S.); (A.A.)
| | - Adalid Armenta
- Centro de Investigación en Materiales Avanzados S.C., Alianza Norte 202, PIIT, Apodaca 66628, Mexico; (M.S.); (A.A.)
| | - Angel Mendoza
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
| | - José Daniel Lozada-Ramírez
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
| | - Cecilia Anaya de Parrodi
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
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6
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Omokawa M, Kimura H, Arimitsu K, Yagi Y, Hattori Y, Kawashima H, Naito Y, Yasui H. Synthesis and Biological Evaluation of a Novel Sugar-Conjugated Platinum(II) Complex Having a Tumor-Targeting Effect. ACS OMEGA 2024; 9:879-886. [PMID: 38222559 PMCID: PMC10785272 DOI: 10.1021/acsomega.3c06922] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/23/2023] [Accepted: 12/05/2023] [Indexed: 01/16/2024]
Abstract
We designed and synthesized a novel platinum complex conjugated with 2-fluorinated 2-deoxyglucoside, named FGC-Pt, to capitalize on the Warburg effect and metabolic trapping properties of [18F]2-deoxy-2-fluoro-d-glucose ([18F]FDG). Then, we conducted comprehensive in vitro and in vivo studies to evaluate the effects of FGC-Pt. In vitro cytotoxicity assays using HeLa cells revealed that FGC-Pt exhibited concentration-dependent cytotoxicity, even though its cytotoxic effect was less pronounced than that of cisplatin. In the evaluation of in vivo biodistribution in mice, platinum concentration in tumors and major organs (muscle, bone, blood, liver, and kidney) and the ratio of platinum concentration in tumors to major organs following the tail vein injection of FGC-Pt and cisplatin suggest that FGC-Pt is more retained in tumors than in other organs and tends to accumulate in tumors more than cisplatin. Furthermore, an in vivo assessment of the antitumor effect conducted in A549 cell-bearing mice demonstrated that FGC-Pt possesses substantial potential as an antitumor agent. It exhibited a tumor growth-inhibitory effect comparable to that of cisplatin while inducing lower toxicity, as evidenced by lower weight loss after administration. Herein, we successfully produced a novel compound with a tumor-growth-inhibitory effect comparable to that of cisplatin and low toxicity.
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Affiliation(s)
- Marina Omokawa
- Laboratory
of Analytical and Bioinorganic Chemistry, Division of Analytical and
Physical Sciences, Kyoto Pharmaceutical
University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Hiroyuki Kimura
- Laboratory
of Analytical and Bioinorganic Chemistry, Division of Analytical and
Physical Sciences, Kyoto Pharmaceutical
University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
- Division
of Probe Chemistry for Disease Analysis/Central Institute for Radioisotope
Science, Research Center for Experimental Modeling of Human Disease, Kanazawa University, 13-1 Takara-machi, Kanazawa 920-8640, Japan
| | - Kenji Arimitsu
- Laboratory
of Analytical and Bioinorganic Chemistry, Division of Analytical and
Physical Sciences, Kyoto Pharmaceutical
University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
- Laboratory
of Medicinal Chemistry, Faculty of Pharmacy, Osaka Ohtani University, Tondabayashi, Osaka 584-8540, Japan
| | - Yusuke Yagi
- Laboratory
of Analytical and Bioinorganic Chemistry, Division of Analytical and
Physical Sciences, Kyoto Pharmaceutical
University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
- Department
of Radiological Technology, Faculty of Medicinal Science, Kyoto College of Medical Science, 1-3 Imakita, Oyama-higashi, Sonobe, Nantan 622-0041, Kyoto, Japan
| | - Yasunao Hattori
- Center
for Instrumental Analysis, Kyoto Pharmaceutical
University, 1 Shichono-cho,
Misasagi, Yamashina-ku, Kyoto 607-8412, Japan
| | - Hidekazu Kawashima
- Radioisotope
Research Center, Kyoto Pharmaceutical University, 1 Shichono-cho, Misasagi, Yamashina-ku, Kyoto 607-8412, Japan
| | - Yuki Naito
- Laboratory
of Analytical and Bioinorganic Chemistry, Division of Analytical and
Physical Sciences, Kyoto Pharmaceutical
University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | - Hiroyuki Yasui
- Laboratory
of Analytical and Bioinorganic Chemistry, Division of Analytical and
Physical Sciences, Kyoto Pharmaceutical
University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
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7
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Kumar N, Yadav M, Kashyap S. Reagent-controlled chemo/stereoselective glycosylation of ʟ-fucal to access rare deoxysugars. Carbohydr Res 2024; 535:108992. [PMID: 38091695 DOI: 10.1016/j.carres.2023.108992] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/22/2023] [Accepted: 11/22/2023] [Indexed: 01/14/2024]
Abstract
2,6-Dideoxy sugars constitute an important class of anticancer antibiotics natural products and serve as essential medicinal tools for carbohydrate-based drug discovery and vaccine development. In particular, 2-deoxy ʟ-fucose or ʟ-oliose is a rare sugar and vital structural motif of several potent antifungal and immunosuppressive bioactive molecules. Herein, we devised a reagent-controlled stereo and chemoselective activation of ʟ-fucal, enabling the distinctive glycosylation pathways to access the rare ʟ-oliose and 2,3-unsaturated ʟ-fucoside. The milder oxo-philic Bi(OTf)3 catalyst induced the direct 1,2-addition predominantly, whereas B(C6F5)3 promoted the allylic Ferrier-rearrangement of the enol-ether moiety in ʟ-fucal glycal donor, distinguishing the competitive mechanisms. The reagent-tunable modular approach is highly advantageous, employing greener catalysts and atom-economical transformations, expensive ligand/additive-free, and probed for a diverse range of substrates comprising monosaccharides, amino-acids, bioactive natural products, and drug scaffolds embedded with susceptible or labile functionalities.
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Affiliation(s)
- Nitin Kumar
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology Jaipur (MNITJ), Jaipur, 302017, India
| | - Monika Yadav
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology Jaipur (MNITJ), Jaipur, 302017, India
| | - Sudhir Kashyap
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology Jaipur (MNITJ), Jaipur, 302017, India.
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8
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Rutkoski R, Arguelles AJ, Huang Q, Nagorny P. Development of Recyclable Polystyrene-Supported Phosphonic Acid Resins for Carbohydrate Immobilization and Glycosylation. J Org Chem 2023; 88:16467-16484. [PMID: 37944478 DOI: 10.1021/acs.joc.3c01985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
This article describes the development of a recyclable polystyrene-based phosphonic acid resin and its use for the synthesis of immobilized glycosyl phosphonate donors and subsequent glycosylation reaction. This solid support was generated on a decagram scale from the commercially available Merrifield resin and subsequently functionalized via two different methods into eight different glycosylphosphonates. The resultant glycosylphosphonate-containing resins were obtained in 59-96% yields and were found to be bench-stable at room temperature. These donors could be activated using trifluoroborane etherate at 80 °C to react with various alcohol- and thiol-based acceptors to provide 17 different glycosides in good-to-excellent yields (53-98%). In addition, it was demonstrated that glycosylated resin could be recovered and recycled multiple times to regenerate immobilized glycosylphosphonate donors and could be subjected to on-resin glycan elongation.
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Affiliation(s)
- Ryan Rutkoski
- Department of Medicinal Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Alonso J Arguelles
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Qingqin Huang
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Pavel Nagorny
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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9
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Teschers CS, Gilmour R. Fluorine-Directed Automated Mannoside Assembly. Angew Chem Int Ed Engl 2023; 62:e202213304. [PMID: 36331042 PMCID: PMC10108063 DOI: 10.1002/anie.202213304] [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: 09/08/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 11/06/2022]
Abstract
Automated glycan assembly (AGA) on solid support has become invaluable in reconciling the biological importance of complex carbohydrates with the persistent challenges associated with reproducible synthesis. Whilst AGA platforms have transformed the construction of many natural sugars, validation in the construction of well-defined (site-selectively modified) glycomimetics is in its infancy. Motivated by the importance of fluorination in drug discovery, the biomedical prominence of 2-fluoro sugars and the remarkable selectivities observed in fluorine-directed glycosylation, fluorine-directed automated glycan assembly (FDAGA) is disclosed. This strategy leverages the fluorine atom for stereocontrolled glycosylation on solid support, thereby eliminating the reliance on O-based directing groups. The logical design of C2-fluorinated mannose building blocks, and their application in the fully (α-)stereocontrolled automated assembly of linear and branched fluorinated oligomannosides, is disclosed. This operationally simple strategy can be integrated into existing AGA and post-AGA protocols to augment the scope of programmed carbohydrate synthesis.
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Affiliation(s)
- Charlotte S. Teschers
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstr. 3648149MünsterGermany
| | - Ryan Gilmour
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstr. 3648149MünsterGermany
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10
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Glycosylated triptolide affords a potent in vivo therapeutic activity to hepatocellular carcinoma in mouse model. Med Chem Res 2022. [DOI: 10.1007/s00044-022-03008-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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11
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Abstract
Fluorinated carbohydrates have found many applications in the glycosciences. Typically, these contain fluorination at a single position. There are not many applications involving polyfluorinated carbohydrates, here defined as monosaccharides in which more than one carbon has at least one fluorine substituent directly attached to it, with the notable exception of their use as mechanism-based inhibitors. The increasing attention to carbohydrate physical properties, especially around lipophilicity, has resulted in a surge of interest for this class of compounds. This review covers the considerable body of work toward the synthesis of polyfluorinated hexoses, pentoses, ketosugars, and aminosugars including sialic acids and nucleosides. An overview of the current state of the art of their glycosidation is also provided.
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Affiliation(s)
- Kler Huonnic
- School
of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
| | - Bruno Linclau
- School
of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, U.K.
- Department
of Organic and Macromolecular Chemistry, Ghent University, Campus Sterre, Krijgslaan 281-S4, Ghent, 9000, Belgium
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12
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Demkiw KM, Remmerswaal WA, Hansen T, van der Marel GA, Codée JDC, Woerpel KA. Halogen Atom Participation in Guiding the Stereochemical Outcomes of Acetal Substitution Reactions. Angew Chem Int Ed Engl 2022; 61:e202209401. [PMID: 35980341 PMCID: PMC9561118 DOI: 10.1002/anie.202209401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Indexed: 01/11/2023]
Abstract
Acetal substitution reactions of α-halogenated five- and six-membered rings can be highly stereoselective. Erosion of stereoselectivity occurs as nucleophilicity increases, which is consistent with additions to a halogen-stabilized oxocarbenium ion, not a three-membered-ring halonium ion. Computational investigations confirmed that the open-form oxocarbenium ions are the reactive intermediates involved. Kinetic studies suggest that hyperconjugative effects and through-space electrostatic interactions can both contribute to the stabilization of halogen-substituted oxocarbenium ions.
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Affiliation(s)
- Krystyna M. Demkiw
- Department of ChemistryNew York University100 Washington Square EastNew YorkNY 10003USA
| | - Wouter A. Remmerswaal
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552300 RALeidenThe Netherlands
| | - Thomas Hansen
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552300 RALeidenThe Netherlands
| | | | - Jeroen D. C. Codée
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552300 RALeidenThe Netherlands
| | - K. A. Woerpel
- Department of ChemistryNew York University100 Washington Square EastNew YorkNY 10003USA
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13
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Liu H, Laporte AG, Tardieu D, Hazelard D, Compain P. Formal Glycosylation of Quinones with exo-Glycals Enabled by Iron-Mediated Oxidative Radical-Polar Crossover. J Org Chem 2022; 87:13178-13194. [PMID: 36095170 DOI: 10.1021/acs.joc.2c01635] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The intermolecular C-O coupling reaction of 1,4-quinones with exo-glycals under iron hydride hydrogen atom transfer (HAT) conditions is described. This method provides a direct and regioselective access to a wide range of phenolic O-ketosides related to biologically relevant natural products in diastereomeric ratios up to >98:2 in the furanose and pyranose series. No trace of the corresponding C-glycosylated products that might have resulted from the radical alkylation of 1,4-quinones was observed. The results of mechanistic experiments suggest that the key C-O bond-forming event proceeds through an oxidative radical-polar crossover process involving a single-electron transfer between the HAT-generated glycosyl radical and the electron-acceptor quinone.
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Affiliation(s)
- Haijuan Liu
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Adrien G Laporte
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Damien Tardieu
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Damien Hazelard
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
| | - Philippe Compain
- Laboratoire d'Innovation Moléculaire et Applications (LIMA), Univ. de Strasbourg
- Univ. de Haute-Alsace
- CNRS (UMR 7042), Equipe de Synthèse Organique et Molécules Bioactives (SYBIO), ECPM, 25 Rue Becquerel, 67000 Strasbourg, France
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14
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Jeanneret R, Walz C, van Meerbeek M, Coppock S, Galan MC. AuCl 3-Catalyzed Hemiacetal Activation for the Stereoselective Synthesis of 2-Deoxy Trehalose Derivatives. Org Lett 2022; 24:6304-6309. [PMID: 35994370 PMCID: PMC9442795 DOI: 10.1021/acs.orglett.2c02530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new practical, catalytic, and highly stereoselective method for directly accessing 1,1-α,α'-linked 2-deoxy trehalose analogues via AuCl3-catalyzed dehydrative glycosylation using hemiacetal glycosyl donors and acceptors is described. The method relies on the chemoselective Brønsted acid-type activation of tribenzylated 2-deoxy hemiacetals in the presence of other less reactive hemiacetals.
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Affiliation(s)
- Robin Jeanneret
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Carlo Walz
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Maarten van Meerbeek
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Sarah Coppock
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - M Carmen Galan
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
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15
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Demkiw KM, Remmerswaal WA, Hansen T, van der Marel GA, Codée JDC, Woerpel K. Halogen Atom Participation in Guiding the Stereochemical Outcomes of Acetal Substitution Reactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Krystyna M. Demkiw
- New York University Department of Chemistry Department of ChemistryNew York University100 Washington Square East 10003 New York UNITED STATES
| | - Wouter A. Remmerswaal
- Leiden University: Universiteit Leiden Leiden Institute of Chemistry Einsteinweg 552333 CC Leiden NETHERLANDS
| | - Thomas Hansen
- Leiden University: Universiteit Leiden Leiden Institute of Chemistry Einsteinweg 552333 CC Leiden NETHERLANDS
| | - Gijsbert A. van der Marel
- Leiden University: Universiteit Leiden Leiden Institute of Chemistry Einsteinweg 552333 CC Leiden NETHERLANDS
| | - Jeroen D. C. Codée
- Leiden University: Universiteit Leiden Leiden Institute of Chemistry Einsteinweg 552333 CC Leiden NETHERLANDS
| | - Keith Woerpel
- NYU: New York University Chemistry 100 Washington Square East 10003 New York UNITED STATES
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16
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Demkiw KM, Hu CT, Woerpel KA. Hyperconjugative Interactions of the Carbon-Halogen Bond that Influence the Geometry of Cyclic α-Haloacetals. J Org Chem 2022; 87:5315-5327. [PMID: 35363473 PMCID: PMC9036965 DOI: 10.1021/acs.joc.2c00148] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The analysis of the structures of low-energy conformers of different α-haloacetals reveals changes in bond lengths and geometries that correspond to stabilizing orbital interactions that contribute to the ground-state structures of these systems. Several factors, including the electron-donating and electron-accepting abilities of the substituents on the ring, affect the degree of the electronic interactions in these carbohydrate-like systems. The presence of an α-halogen atom that can participate in hyperconjugation has been shown to contribute to the structural characteristics of the low-energy conformer. The experimental evidence is supported by natural bond order (NBO) analysis to identify the types of interactions and to assess their relative importance.
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Affiliation(s)
- Krystyna M Demkiw
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - Chunhua T Hu
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
| | - K A Woerpel
- Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
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17
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Javed, Tiwari A, Azeem Z, Mandal PK. 4,5-Dioxo-imidazolinium Cation-Promoted α-Selective Dehydrative Glycosylation of 2-Deoxy- and 2,6-Dideoxy Sugars. J Org Chem 2022; 87:3718-3729. [DOI: 10.1021/acs.joc.1c02650] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Javed
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India
| | - Ashwani Tiwari
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India
| | - Zanjila Azeem
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226031, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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18
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Stereoselective gold(I)-catalyzed approach to the synthesis of complex α-glycosyl phosphosaccharides. Nat Commun 2022; 13:421. [PMID: 35058448 PMCID: PMC8776814 DOI: 10.1038/s41467-022-28025-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 12/10/2021] [Indexed: 11/09/2022] Open
Abstract
AbstractGlycosyl phosphosaccharides represent a large and important family of complex glycans. Due to the distinct nature of these complex molecules, efficient approaches to access glycosyl phosphosaccharides are still in great demand. Here, we disclose a highly efficient and stereoselective approach to the synthesis of biologically important and complex α-glycosyl phosphosaccharides, employing direct gold(I)-catalyzed glycosylation of the weakly nucleophilic phosphoric acid acceptors. In this work, the broad substrate scope is demonstrated with more than 45 examples, including glucose, xylose, glucuronate, galactose, mannose, rhamnose, fucose, 2-N3-2-deoxymannose, 2-N3-2-deoxyglucose, 2-N3-2-deoxygalactose and unnatural carbohydrates. Here, we show the glycosyl phosphotriester prepared herein was successfully applied to the one-pot synthesis of a phosphosaccharide from Leishmania donovani, and an effective preparation of a trisaccharide diphosphate of phosphosaccharide fragments from Hansenula capsulate via iterative elongation strategy is realized.
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19
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Zhang M, Chen HW, Liu QQ, Gao FT, Li YX, Hu XG, Yu CY. De Novo Synthesis of Orthogonally-Protected C2-Fluoro Digitoxoses and Cymaroses: Development and Application for the Synthesis of Fluorinated Digoxin. J Org Chem 2021; 87:1272-1284. [PMID: 34964642 DOI: 10.1021/acs.joc.1c02592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Inspired by Roush's pioneering work on rare sugars, we have developed a scalable, stereoselective, de novo synthesis of orthogonally protected C2-fluoro digitoxose and cymarose, utilizing Sharpless kinetic resolution and organocatalytic fluorination as key steps. The utility of this strategy is demonstrated by the synthesis of a fluorinated analogue of digoxin, which indicates the fluorine on the sugar ring may have a significant impact on biological activity.
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Affiliation(s)
- Ming Zhang
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China.,Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hong-Wei Chen
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Qing-Quan Liu
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Feng-Teng Gao
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Yi-Xian Li
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiang-Guo Hu
- National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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20
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Zhao G, Li J, Wang T. Visible-light-induced photoacid catalysis: application in glycosylation with O-glycosyl trichloroacetimidates. Chem Commun (Camb) 2021; 57:12659-12662. [PMID: 34768281 DOI: 10.1039/d1cc04887b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The development of visible-light-induced photoacid catalyzed glycosylation is reported. The eosin Y and PhSSPh catalyst system is applied to realize glycosylation with different glycosyl donors upon light irradiation. The reaction shows a broad substrate scope, including both glycosyl donors and acceptors, and highlights the mild nature of the reaction conditions.
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Affiliation(s)
- Gaoyuan Zhao
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, USA.
| | - Juncheng Li
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, USA.
| | - Ting Wang
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, USA.
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21
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Maria Faisca Phillips A, Pombeiro AJL. Recent Developments in Enantioselective Organocatalytic Cascade Reactions for the Construction of Halogenated Ring Systems. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100364] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ana Maria Faisca Phillips
- Centro de Química Estrutural Instituto Superior Técnico Universidade de Lisboa Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural Instituto Superior Técnico Universidade de Lisboa Av. Rovisco Pais 1049-001 Lisboa Portugal
- Рeoples' Friendship University of Russia RUDN University) 6 Miklukho-Maklaya Street Moscow 117198 Russian Federation
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22
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Abstract
A short de novo synthesis of an l-lemonose thioglycoside is described starting from d-threonine. The synthesis leverages a Dieckmann condensation and Stork-Danheiser transposition to arrive at a key vinylogous ester intermediate on gram scale. Ensuing 1,2-addition diastereoselectively establishes the C3 tetra-substituted center and subsequent glycal hydration allows for anomeric functionalization to the thioglycoside. 1H and NOESY NMR analyses reveal that the major α-anomer of thioglycoside deviates from the expected 1C4 conformation.
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Affiliation(s)
- Eric D Huseman
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA
| | - Steven D Townsend
- Department of Chemistry, Vanderbilt University, Nashville, TN 37235, USA
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23
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Fittolani G, Shanina E, Guberman M, Seeberger PH, Rademacher C, Delbianco M. Automatisierte Glykan‐Assemblierung
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F‐markierter Glykansonden ermöglicht Hochdurchsatz‐NMR‐Untersuchungen von Protein‐Glykan‐Interaktionen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Giulio Fittolani
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Deutschland
- Department of Chemistry and Biochemistry Freie Universität Berlin Arnimallee 22 14195 Berlin Deutschland
| | - Elena Shanina
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Deutschland
- Department of Chemistry and Biochemistry Freie Universität Berlin Arnimallee 22 14195 Berlin Deutschland
| | - Mónica Guberman
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Deutschland
- Derzeitige Adresse: Medicinal Chemistry Leibniz-Forschungsinstitut für Molekulare Pharmakologie Robert-Rössle Straße 10 13125 Berlin Deutschland
| | - Peter H. Seeberger
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Deutschland
- Department of Chemistry and Biochemistry Freie Universität Berlin Arnimallee 22 14195 Berlin Deutschland
| | - Christoph Rademacher
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Deutschland
- Department of Chemistry and Biochemistry Freie Universität Berlin Arnimallee 22 14195 Berlin Deutschland
- Derzeitige Adresse: Department of Pharmaceutical Chemistry University of Vienna Althanstraße 14 1080 Wien Österreich
- Derzeitige Adresse: Department of Microbiology, Immunobiology and Genetics Max F. Perutz Labs Campus Vienna Biocenter 5 1030 Wien Österreich
| | - Martina Delbianco
- Department of Biomolecular Systems Max Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Deutschland
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24
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Fittolani G, Shanina E, Guberman M, Seeberger PH, Rademacher C, Delbianco M. Automated Glycan Assembly of 19 F-labeled Glycan Probes Enables High-Throughput NMR Studies of Protein-Glycan Interactions. Angew Chem Int Ed Engl 2021; 60:13302-13309. [PMID: 33784430 PMCID: PMC8252726 DOI: 10.1002/anie.202102690] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/19/2021] [Indexed: 12/23/2022]
Abstract
Protein-glycan interactions mediate important biological processes, including pathogen host invasion and cellular communication. Herein, we showcase an expedite approach that integrates automated glycan assembly (AGA) of 19 F-labeled probes and high-throughput NMR methods, enabling the study of protein-glycan interactions. Synthetic Lewis type 2 antigens were screened against seven glycan binding proteins (GBPs), including DC-SIGN and BambL, respectively involved in HIV-1 and lung infections in immunocompromised patients, confirming the preference for fucosylated glycans (Lex , H type 2, Ley ). Previously unknown glycan-lectin weak interactions were detected, and thermodynamic data were obtained. Enzymatic reactions were monitored in real-time, delivering kinetic parameters. These results demonstrate the utility of AGA combined with 19 F NMR for the discovery and characterization of glycan-protein interactions, opening up new perspectives for 19 F-labeled complex glycans.
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Affiliation(s)
- Giulio Fittolani
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
- Department of Chemistry and BiochemistryFreie Universität BerlinArnimallee 2214195BerlinGermany
| | - Elena Shanina
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
- Department of Chemistry and BiochemistryFreie Universität BerlinArnimallee 2214195BerlinGermany
| | - Mónica Guberman
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
- Current address: Medicinal ChemistryLeibniz-Forschungsinstitut für Molekulare PharmakologieRobert-Rössle Strasse 1013125BerlinGermany
| | - Peter H. Seeberger
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
- Department of Chemistry and BiochemistryFreie Universität BerlinArnimallee 2214195BerlinGermany
| | - Christoph Rademacher
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
- Department of Chemistry and BiochemistryFreie Universität BerlinArnimallee 2214195BerlinGermany
- Current address: Department of Pharmaceutical ChemistryUniversity of ViennaAlthanstrasse 141080ViennaAustria
- Current address: Department of Microbiology, Immunobiology and GeneticsMax F. Perutz LabsCampus Vienna Biocenter 51030ViennaAustria
| | - Martina Delbianco
- Department of Biomolecular SystemsMax Planck Institute of Colloids and InterfacesAm Mühlenberg 114476PotsdamGermany
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25
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Mondal R, Agbaria M, Nairoukh Z. Fluorinated Rings: Conformation and Application. Chemistry 2021; 27:7193-7213. [PMID: 33512034 DOI: 10.1002/chem.202005425] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Indexed: 12/16/2022]
Abstract
The introduction of fluorine atoms into molecules and materials across many fields of academic and industrial research is now commonplace, owing to their unique properties. A particularly interesting feature is the impact of fluorine substitution on the relative orientation of a C-F bond when incorporated into organic molecules. In this Review, we will be discussing the conformational behavior of fluorinated aliphatic carbo- and heterocyclic systems. The conformational preference of each system is associated with various interactions introduced by fluorine substitution such as charge-dipole, dipole-dipole, and hyperconjugative interactions. The contribution of each interaction on the stabilization of the fluorinated alicyclic system, which manifests itself in low conformations, will be discussed in detail. The novelty of this feature will be demonstrated by presenting the most recent applications.
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Affiliation(s)
- Rajarshi Mondal
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, 9190401, Israel
| | - Mohamed Agbaria
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, 9190401, Israel
| | - Zackaria Nairoukh
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem, 9190401, Israel
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26
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Tremblay T, St-Gelais J, Houde M, Giguère D. Polyfluoroglycoside Synthesis via Simple Alkylation of an Anomeric Hydroxyl Group: Access to Fluoroetoposide Analogues. J Org Chem 2021; 86:4812-4824. [DOI: 10.1021/acs.joc.0c02841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Thomas Tremblay
- Département de Chimie, Université Laval, PROTEO, 1045 av. De la Médecine, Québec City, QC, Canada G1 V 0A6
| | - Jacob St-Gelais
- Département de Chimie, Université Laval, PROTEO, 1045 av. De la Médecine, Québec City, QC, Canada G1 V 0A6
| | - Maxime Houde
- Département de Chimie, Université Laval, PROTEO, 1045 av. De la Médecine, Québec City, QC, Canada G1 V 0A6
| | - Denis Giguère
- Département de Chimie, Université Laval, PROTEO, 1045 av. De la Médecine, Québec City, QC, Canada G1 V 0A6
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27
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DeMent PM, Liu C, Wakpal J, Schaugaard RN, Schlegel HB, Nguyen HM. Phenanthroline-Catalyzed Stereoselective Formation of α-1,2- cis 2-Deoxy-2-Fluoro Glycosides. ACS Catal 2021; 11:2108-2120. [PMID: 34336371 DOI: 10.1021/acscatal.0c04381] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Phenanthroline is a heterocyclic aromatic organic compound and commonly used in coordination chemistry acting as a bidentate ligand. The C4 and C7 positions of phenanthroline can often be substituted to change the binding capabilities of the ligand. Recently, there has been a push in the field of chemistry to create environmental-friendly chemical methodologies by utilizing catalysts and minimizing solvent. Herein, we have illustrated how, at high concentrations with minimal use of solvent, the C4 and C7 positions of phenanthroline can be tuned to develop an efficient and stereoselective catalyst for the formation of α-1,2-cis-fluorinated glycosides. By activating 2-deoxy-2-fluoro glycosyl halides with phenanthroline-based catalysts, we have been able to achieve glycosylations with high levels of α-selectivities and moderate to high yields. The catalytic system has been applied to several glycosyl halide electrophiles with a range of glycosyl nucleophilic acceptors. The proposed mechanism for this catalytic glycosylation system has been investigated by density functional theory calculations, indicating that the double SN2 displacement pathways with phenanthroline catalysts have lower barriers and ensure stereoselective formation of α-1,2-cis-2-fluoro glycosides.
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Affiliation(s)
- Paul M. DeMent
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Chenlu Liu
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Joseph Wakpal
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Richard N. Schaugaard
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - H. Bernhard Schlegel
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Hien M. Nguyen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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28
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Axer A, Jumde RP, Adam S, Faust A, Schäfers M, Fobker M, Koehnke J, Hirsch AKH, Gilmour R. Enhancing glycan stability via site-selective fluorination: modulating substrate orientation by molecular design. Chem Sci 2020; 12:1286-1294. [PMID: 34163891 PMCID: PMC8179167 DOI: 10.1039/d0sc04297h] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Single site OH → F substitution at the termini of maltotetraose leads to significantly improved hydrolytic stability towards α-amylase and α-glucosidase relative to the natural compound. To explore the effect of molecular editing, selectively modified oligosaccharides were prepared via a convergent α-selective strategy. Incubation experiments in purified α-amylase and α-glucosidase, and in human and murine blood serum, provide insight into the influence of fluorine on the hydrolytic stability of these clinically important scaffolds. Enhancements of ca. 1 order of magnitude result from these subtle single point mutations. Modification at the monosaccharide furthest from the probable enzymatic cleavage termini leads to the greatest improvement in stability. In the case of α-amylase, docking studies revealed that retentive C2-fluorination at the reducing end inverts the orientation in which the substrate is bound. A co-crystal structure of human α-amylase revealed maltose units bound at the active-site. In view of the evolving popularity of C(sp3)–F bioisosteres in medicinal chemistry, and the importance of maltodextrins in bacterial imaging, this discovery begins to reconcile the information-rich nature of carbohydrates with their intrinsic hydrolytic vulnerabilities. Single site OH → F substitution at the termini of maltotetraose leads to significantly improved hydrolytic stability towards α-amylase and α-glucosidase relative to the natural compound.![]()
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Affiliation(s)
- Alexander Axer
- Organisch Chemisches Institut, WWU Münster Corrensstraße 36 48149 Münster Germany
| | - Ravindra P Jumde
- Department of Drug Discovery and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) University Campus E8.1 66123 Saarbrücken Germany
| | - Sebastian Adam
- Workgroup Structural Biology of Biosynthetic Enzymes, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Institute for Infection Research (HZI) University Campus E8.1 66123 Saarbrücken Germany
| | - Andreas Faust
- European Institute for Molecular Imaging Münster Germany
| | - Michael Schäfers
- European Institute for Molecular Imaging Münster Germany.,Department of Nuclear Medicine, University Hospital (UKM) Münster Germany
| | - Manfred Fobker
- Center for Laboratory Medicine, WWU Münster Münster Germany
| | - Jesko Koehnke
- Workgroup Structural Biology of Biosynthetic Enzymes, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Institute for Infection Research (HZI) University Campus E8.1 66123 Saarbrücken Germany.,Department of Pharmacy, Saarland University 66123 Saarbrücken Germany
| | - Anna K H Hirsch
- Department of Drug Discovery and Optimization, Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) University Campus E8.1 66123 Saarbrücken Germany.,Department of Pharmacy, Saarland University 66123 Saarbrücken Germany
| | - Ryan Gilmour
- Organisch Chemisches Institut, WWU Münster Corrensstraße 36 48149 Münster Germany
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29
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Tomita S, Tanaka M, Inoue M, Inaba K, Takahashi D, Toshima K. Diboron-Catalyzed Regio- and 1,2- cis-α-Stereoselective Glycosylation of trans-1,2-Diols. J Org Chem 2020; 85:16254-16262. [PMID: 33052679 DOI: 10.1021/acs.joc.0c02093] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Regio- and 1,2-cis-α-stereoselective glycosylations were investigated using 1,2-anhydroglucose donors and trans-1,2-diol sugar acceptors in the presence of a diboron catalyst. The reactions proceeded smoothly to provide the corresponding 1,2-cis-α-glycosides with consistently very high stereoselectivity and were regioselectivity controlled by the protecting groups of the acceptor. The present glycosylation method was applied successfully to the efficient synthesis of α-1,3-glucan pentasaccharide.
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Affiliation(s)
- Shunpei Tomita
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Masamichi Tanaka
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Michitaka Inoue
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Kazuki Inaba
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Daisuke Takahashi
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Kazunobu Toshima
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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30
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Sarie JC, Thiehoff C, Neufeld J, Daniliuc CG, Gilmour R. Enantioselective Synthesis of 3-Fluorochromanes via Iodine(I)/Iodine(III) Catalysis. Angew Chem Int Ed Engl 2020; 59:15069-15075. [PMID: 32347605 PMCID: PMC7496101 DOI: 10.1002/anie.202005181] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Indexed: 12/24/2022]
Abstract
The chromane nucleus is common to a plenum of bioactive small molecules where it is frequently oxidized at position 3. Motivated by the importance of this position in conferring efficacy, and the prominence of bioisosterism in drug discovery, an iodine(I)/iodine(III) catalysis strategy to access enantioenriched 3-fluorochromanes is disclosed (up to 7:93 e.r.). In situ generation of ArIF2 enables the direct fluorocyclization of allyl phenyl ethers to generate novel scaffolds that manifest the stereoelectronic gauche effect. Mechanistic interrogation using deuterated probes confirms a stereospecific process consistent with a type IIinv pathway.
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Affiliation(s)
- Jérôme C. Sarie
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Christian Thiehoff
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Jessica Neufeld
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Constantin G. Daniliuc
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 4048149MünsterGermany
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31
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Kieser TJ, Santschi N, Nowack L, Axer A, Kehr G, Albrecht S, Gilmour R. Total Chemical Syntheses of the GM 3 and F-GM 3 Ganglioside Epitopes and Comparative Pre-Clinical Evaluation for Non-Invasive Imaging of Oligodendrocyte Differentiation. ACS Chem Neurosci 2020; 11:2129-2136. [PMID: 32559361 DOI: 10.1021/acschemneuro.0c00319] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Gangliosides are intimately involved in a plenum of (neuro)inflammatory processes, yet progress in establishing structure-function interplay is frequently hindered by the availability of well-defined glycostructures. Motivated by the ubiquity of the ganglioside GM3 in chemical neurology, and in particular by its conspicuous presence in myelin, the GM3 epitope was examined with a view to preclinical validation as a tracer. The suitability of this scaffold for the noninvasive imaging of oligodendrocyte differentiation in Multiple sclerosis is disclosed. The stereocontrolled synthesis of a site-selectively fluorinated analogue (F-GM3) is also disclosed to enable a comparative analysis in oligodendrocyte (OL) differentiation. Whereas the native epitope caused a decrease in the viability in a dose-dependent manner, the addition of distinct F-GM3 concentrations over 48 h had no impact on the OL viability. This is likely a consequence of the enhanced hydrolytic stability imparted by the fluorination and highlights the potential of fluorinated glycostructures in the field of molecular imaging. Given the predominant expression of GM3 in oligodendrocytes and the capacity of GM3 to interact with myelin-associated proteins, this preclinical evaluation has revealed F-GM3 to be an intriguing candidate for neurological imaging.
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Affiliation(s)
- Tobias J. Kieser
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, Münster 48149, Germany
| | - Nico Santschi
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, Münster 48149, Germany
| | - Luise Nowack
- Institute for Neuropathology, University Hospital Münster, Pottkamp 2, Münster 48149, Germany
| | - Alexander Axer
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, Münster 48149, Germany
| | - Gerald Kehr
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, Münster 48149, Germany
| | - Stefanie Albrecht
- Institute for Neuropathology, University Hospital Münster, Pottkamp 2, Münster 48149, Germany
| | - Ryan Gilmour
- Institute for Organic Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, Münster 48149, Germany
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32
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Sarie JC, Thiehoff C, Neufeld J, Daniliuc CG, Gilmour R. Enantioselektive Synthese von 3‐Fluorchromanen durch Iod(I)/Iod(III)‐Katalyse. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jérôme C. Sarie
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Christian Thiehoff
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Jessica Neufeld
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Constantin G. Daniliuc
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
| | - Ryan Gilmour
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 40 48149 Münster Deutschland
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33
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Yu F, Dickson JL, Loka RS, Xu H, Schaugaard RN, Schlegel HB, Luo L, Nguyen HM. Diastereoselective sp 3 C-O Bond Formation via Visible Light-Induced, Copper-Catalyzed Cross-Couplings of Glycosyl Bromides with Aliphatic Alcohols. ACS Catal 2020; 10:5990-6001. [PMID: 34168901 DOI: 10.1021/acscatal.0c01470] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Copper-catalyzed cross-coupling reactions have become one of the most powerful methods for generating carbon-heteroatom bonds, an important framework of many organic molecules. However, copper-catalyzed C(sp3)-O cross-coupling of alkyl halides with alkyl alcohols remains elusive because of the sluggish nature of oxidative addition to copper. To address this challenge, we have developed a catalytic copper system, which overcomes the copper oxidative addition barrier with the aid of visible light and effectively facilitates the cross-couplings of glycosyl bromides with aliphatic alcohols to afford C(sp3)-O bonds with high levels of diastereoselectivity. Importantly, this catalytic system leads to a mild and efficient method for stereoselective construction of α-1,2-cis glycosides, which are of paramount importance, but challenging. In general, stereochemical outcomes in α-1,2-cis glycosidic C-O bond-forming processes are unpredictable and dependent on the steric and electronic nature of protecting groups bound to carbohydrate coupling partners. Currently, the most reliable approaches rely on the use of a chiral auxiliary or hydrogen-bond directing group at the C2- and C4-position of carbohydrate electrophiles to control α-1,2-cis selectivity. In our approach, earth-abundant copper not only acts as a photocatalyst and a bond-forming catalyst, but also enforces the stereocontrolled formation of anomeric C-O bonds. This cross-coupling protocol enables highly diastereoselective access to a wide variety of α-1,2-cis-glycosides and biologically relevant α-glycan oligosaccharides. Our work provides a foundation for developing new methods for the stereoselective construction of natural and unnatural anomeric carbon(sp3)-heteroatom bonds.
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Affiliation(s)
- Fei Yu
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Jalen L. Dickson
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Ravi S. Loka
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Hengfu Xu
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Richard N. Schaugaard
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - H. Bernhard Schlegel
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Long Luo
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Hien M. Nguyen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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34
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Romeo JR, McDermott L, Bennett CS. Reagent-Controlled α-Selective Dehydrative Glycosylation of 2,6-Dideoxy Sugars: Construction of the Arugomycin Tetrasaccharide. Org Lett 2020; 22:3649-3654. [PMID: 32281384 PMCID: PMC7239334 DOI: 10.1021/acs.orglett.0c01153] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The first synthesis of the tetrasaccharide fragment of the anthracycline natural product Arugomycin is described. A reagent controlled dehydrative glycosylation method involving cyclopropenium activation was utilized to synthesize the α-linkages with complete anomeric selectivity. The synthesis was completed in 20 total steps, and in 2.5% overall yield with a longest linear sequence of 15 steps.
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Affiliation(s)
- Joseph R Romeo
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Luca McDermott
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
| | - Clay S Bennett
- Department of Chemistry, Tufts University, Medford, Massachusetts 02155, United States
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35
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Hayashi T, Axer A, Kehr G, Bergander K, Gilmour R. Halogen-directed chemical sialylation: pseudo-stereodivergent access to marine ganglioside epitopes. Chem Sci 2020; 11:6527-6531. [PMID: 34094118 PMCID: PMC8152791 DOI: 10.1039/d0sc01219j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Sialic acids are conspicuous structural components of the complex gangliosides that regulate cellular processes. Their importance in molecular recognition manifests itself in drug design (e.g. Tamiflu®) and continues to stimulate the development of effective chemical sialylation strategies to complement chemoenzymatic technologies. Stereodivergent approaches that enable the α- or β-anomer to be generated at will are particularly powerful to attenuate hydrogen bond networks and interrogate function. Herein, we demonstrate that site-selective halogenation (F and Br) at C3 of the N-glycolyl units common to marine Neu2,6Glu epitopes enables pseudo-stereodivergent sialylation. α-Selective sialylation results from fluorination, whereas traceless bromine-guided sialylation generates the β-adduct. This concept is validated in the synthesis of HLG-1 and Hp-s1 analogues. Sialic acids are conspicuous structural components of the complex gangliosides that regulate cellular processes.![]()
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Affiliation(s)
- Taiki Hayashi
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstrasse 40 Münster Germany
| | - Alexander Axer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstrasse 40 Münster Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstrasse 40 Münster Germany
| | - Klaus Bergander
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstrasse 40 Münster Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster Corrensstrasse 40 Münster Germany
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36
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Fischer P, Morris M, Müller-Bunz H, Evans P. Synthesis and Structural Elucidation of 1,2-Disubstituted 3-Fluoropiperidines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Pauline Fischer
- Centre for Synthesis and Chemical Biology; School of Chemistry; University College Dublin; D04 N2E5 Dublin Ireland
| | - Morgan Morris
- Centre for Synthesis and Chemical Biology; School of Chemistry; University College Dublin; D04 N2E5 Dublin Ireland
| | - Helge Müller-Bunz
- Centre for Synthesis and Chemical Biology; School of Chemistry; University College Dublin; D04 N2E5 Dublin Ireland
| | - Paul Evans
- Centre for Synthesis and Chemical Biology; School of Chemistry; University College Dublin; D04 N2E5 Dublin Ireland
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37
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Jiang N, Dong Y, Sun G, Yang G, Wang Q, Zhang J. Core‐Shell Fe
3
O
4
@Carbon@SO
3
H: A Powerful Recyclable Catalyst for the Synthesis of α‐2‐Deoxygalactosides. ChemistrySelect 2020. [DOI: 10.1002/slct.202000089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Nan Jiang
- School of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200241 P. R. of China
| | - Youxian Dong
- School of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200241 P. R. of China
| | - Guosheng Sun
- School of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200241 P. R. of China
| | - Guofang Yang
- School of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200241 P. R. of China
| | - Qingbing Wang
- School of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200241 P. R. of China
| | - Jianbo Zhang
- School of Chemistry and Molecular EngineeringEast China Normal University Shanghai 200241 P. R. of China
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38
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Sibold J, Kettelhoit K, Vuong L, Liu F, Werz DB, Steinem C. Synthesis of Gb 3 Glycosphingolipids with Labeled Head Groups: Distribution in Phase-Separated Giant Unilamellar Vesicles. Angew Chem Int Ed Engl 2019; 58:17805-17813. [PMID: 31529754 PMCID: PMC6899692 DOI: 10.1002/anie.201910148] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/09/2019] [Indexed: 11/22/2022]
Abstract
The receptor lipid Gb3 is responsible for the specific internalization of Shiga toxin (STx) into cells. The head group of Gb3 defines the specificity of STx binding, and the backbone with different fatty acids is expected to influence its localization within membranes impacting membrane organization and protein internalization. To investigate this influence, a set of Gb3 glycosphingolipids labeled with a BODIPY fluorophore attached to the head group was synthesized. C24 fatty acids, saturated, unsaturated, α-hydroxylated derivatives, and a combination thereof, were attached to the sphingosine backbone. The synthetic Gb3 glycosphingolipids were reconstituted into coexisting liquid-ordered (lo )/liquid-disordered (ld ) giant unilamellar vesicles (GUVs), and STx binding was verified by fluorescence microscopy. Gb3 with the C24:0 fatty acid partitioned mostly in the lo phase, while the unsaturated C24:1 fatty acid distributes more into the ld phase. The α-hydroxylation does not influence its partitioning.
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Affiliation(s)
- Jeremias Sibold
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular ChemistryTammannstr. 237077GöttingenGermany
| | - Katharina Kettelhoit
- Technische Universität BraunschweigInstitute of Organic ChemistryHagenring 3038106BraunschweigGermany
| | - Loan Vuong
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular ChemistryTammannstr. 237077GöttingenGermany
| | - Fangyuan Liu
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular ChemistryTammannstr. 237077GöttingenGermany
| | - Daniel B. Werz
- Technische Universität BraunschweigInstitute of Organic ChemistryHagenring 3038106BraunschweigGermany
| | - Claudia Steinem
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular ChemistryTammannstr. 237077GöttingenGermany
- Max Planck Institute for Dynamics and Self OrganizationAm Faßberg 1737077GöttingenGermany
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39
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Sibold J, Kettelhoit K, Vuong L, Liu F, Werz DB, Steinem C. Synthesis of Gb
3
Glycosphingolipids with Labeled Head Groups: Distribution in Phase‐Separated Giant Unilamellar Vesicles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jeremias Sibold
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular Chemistry Tammannstr. 2 37077 Göttingen Germany
| | - Katharina Kettelhoit
- Technische Universität BraunschweigInstitute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Loan Vuong
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular Chemistry Tammannstr. 2 37077 Göttingen Germany
| | - Fangyuan Liu
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular Chemistry Tammannstr. 2 37077 Göttingen Germany
| | - Daniel B. Werz
- Technische Universität BraunschweigInstitute of Organic Chemistry Hagenring 30 38106 Braunschweig Germany
| | - Claudia Steinem
- Georg-August-Universität GöttingenInstitute of Organic and Biomolecular Chemistry Tammannstr. 2 37077 Göttingen Germany
- Max Planck Institute for Dynamics and Self Organization Am Faßberg 17 37077 Göttingen Germany
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40
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Lebedel L, Ardá A, Martin A, Désiré J, Mingot A, Aufiero M, Aiguabella Font N, Gilmour R, Jiménez‐Barbero J, Blériot Y, Thibaudeau S. Structural and Computational Analysis of 2‐Halogeno‐Glycosyl Cations in the Presence of a Superacid: An Expansive Platform. Angew Chem Int Ed Engl 2019; 58:13758-13762. [DOI: 10.1002/anie.201907001] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 06/28/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Ludivine Lebedel
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Ana Ardá
- CIC bioGUNE Parque technologico de Bizkaia, Edif. 801A-1° Derio-Bizkaia 48160 Spain
- Ikerbasque, Basque Foundation for Science Maria Lopez de Haro 3 48013 Bilbao Spain
| | - Amélie Martin
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Jérôme Désiré
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Agnès Mingot
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Marialuisa Aufiero
- Organisch Chemisches InstitutWestfälische Wilhelms Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Nuria Aiguabella Font
- Organisch Chemisches InstitutWestfälische Wilhelms Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Jesus Jiménez‐Barbero
- CIC bioGUNE Parque technologico de Bizkaia, Edif. 801A-1° Derio-Bizkaia 48160 Spain
- Ikerbasque, Basque Foundation for Science Maria Lopez de Haro 3 48013 Bilbao Spain
| | - Yves Blériot
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Sébastien Thibaudeau
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
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41
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Lebedel L, Ardá A, Martin A, Désiré J, Mingot A, Aufiero M, Aiguabella Font N, Gilmour R, Jiménez‐Barbero J, Blériot Y, Thibaudeau S. Structural and Computational Analysis of 2‐Halogeno‐Glycosyl Cations in the Presence of a Superacid: An Expansive Platform. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ludivine Lebedel
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Ana Ardá
- CIC bioGUNE Parque technologico de Bizkaia, Edif. 801A-1° Derio-Bizkaia 48160 Spain
- Ikerbasque, Basque Foundation for Science Maria Lopez de Haro 3 48013 Bilbao Spain
| | - Amélie Martin
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Jérôme Désiré
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Agnès Mingot
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Marialuisa Aufiero
- Organisch Chemisches InstitutWestfälische Wilhelms Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Nuria Aiguabella Font
- Organisch Chemisches InstitutWestfälische Wilhelms Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Jesus Jiménez‐Barbero
- CIC bioGUNE Parque technologico de Bizkaia, Edif. 801A-1° Derio-Bizkaia 48160 Spain
- Ikerbasque, Basque Foundation for Science Maria Lopez de Haro 3 48013 Bilbao Spain
| | - Yves Blériot
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Sébastien Thibaudeau
- IC2MP UMR CNRS 7285, Equipe “Synthèse Organique”Université de Poitiers 4 rue Michel Brunet 86073 Poitiers cedex 9 France
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42
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Shaw M, Kumar A. Additive‐Free Gold(III)‐Catalyzed Stereoselective Synthesis of 2‐Deoxyglycosides Using Phenylpropiolate Glycosides as Donors. Chem Asian J 2019; 14:4651-4658. [DOI: 10.1002/asia.201900888] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/05/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Mukta Shaw
- Department of ChemistryIndian Institute of Technology Patna, Bihta 801106 Bihar India
| | - Amit Kumar
- Department of ChemistryIndian Institute of Technology Patna, Bihta 801106 Bihar India
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Mizia JC, Bennett CS. Reagent Controlled Direct Dehydrative Glycosylation with 2-Deoxy Sugars: Construction of the Saquayamycin Z Pentasaccharide. Org Lett 2019; 21:5922-5927. [PMID: 31305082 DOI: 10.1021/acs.orglett.9b02056] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first synthesis of the pentasaccharide fragment of the angucycline antibiotic saquayamycin Z is described. By using our sulfonyl chloride mediated reagent controlled dehydrative glycosylation, we are able to assemble the glycosidic linkages with high levels of anomeric selectivity. The total synthesis was completed in 25 total steps, and in 2.5% overall yield with a longest linear sequence of 15 steps.
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Affiliation(s)
- J Colin Mizia
- Department of Chemistry , Tufts University , Medford , Massachusetts 02155 , United States
| | - Clay S Bennett
- Department of Chemistry , Tufts University , Medford , Massachusetts 02155 , United States
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44
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Verdelet T, Benmahdjoub S, Benmerad B, Alami M, Messaoudi S. Copper-Catalyzed Anomeric O-Arylation of Carbohydrate Derivatives at Room Temperature. J Org Chem 2019; 84:9226-9238. [PMID: 31274301 DOI: 10.1021/acs.joc.9b01218] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Direct and practical anomeric O-arylation of sugar lactols with substituted arylboronic acids has been established. Using copper catalysis at room temperature under an air atmosphere, the protocol proved to be general, and a variety of aryl O-glycosides have been prepared in good to excellent yields. Furthermore, this approach was extended successfully to unprotected carbohydrates, including α-mannose, and it was demonstrated here how the interaction between carbohydrates and boronic acids can be combined with copper catalysis to achieve selective anomeric O-arylation.
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Affiliation(s)
- Tristan Verdelet
- BioCIS , Univ. Paris-Sud, CNRS, University Paris-Saclay , 92290 Châtenay-Malabry , France
| | - Sara Benmahdjoub
- Laboratoire de Physico-Chimie des Matériaux et Catalyse, Faculté des Sciences Exactes , Université de Bejaia , 06000 Bejaia , Algeria
| | - Belkacem Benmerad
- Laboratoire de Physico-Chimie des Matériaux et Catalyse, Faculté des Sciences Exactes , Université de Bejaia , 06000 Bejaia , Algeria
| | - Mouad Alami
- BioCIS , Univ. Paris-Sud, CNRS, University Paris-Saclay , 92290 Châtenay-Malabry , France
| | - Samir Messaoudi
- BioCIS , Univ. Paris-Sud, CNRS, University Paris-Saclay , 92290 Châtenay-Malabry , France
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45
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Pałasz A, Cież D, Trzewik B, Miszczak K, Tynor G, Bazan B. In the Search of Glycoside-Based Molecules as Antidiabetic Agents. Top Curr Chem (Cham) 2019; 377:19. [PMID: 31165274 PMCID: PMC6548768 DOI: 10.1007/s41061-019-0243-6] [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] [Received: 12/20/2018] [Accepted: 05/14/2019] [Indexed: 02/06/2023]
Abstract
This review is an effort to summarize recent developments in synthesis of O-glycosides and N-, C-glycosyl molecules with promising antidiabetic potential. Articles published after 2000 are included. First, the O-glycosides used in the treatment of diabetes are presented, followed by the N-glycosides and finally the C-glycosides constituting the largest group of antidiabetic drugs are described. Within each group of glycosides, we presented how the structure of compounds representing potential drugs changes and when discussing chemical compounds of a similar structure, achievements are presented in the chronological order. C-Glycosyl compounds mimicking O-glycosides structure, exhibit the best features in terms of pharmacodynamics and pharmacokinetics. Therefore, the largest part of the article is concerned with the description of the synthesis and biological studies of various C-glycosides. Also N-glycosides such as N-(β-d-glucopyranosyl)-amides, N-(β-d-glucopyranosyl)-ureas, and 1,2,3-triazolyl derivatives belong to the most potent classes of antidiabetic agents. In order to indicate which of the compounds presented in the given sections have the best inhibitory properties, a list of the best inhibitors is presented at the end of each section. In summary, the best inhibitors were selected from each of the summarizing figures and the results of the ranking were placed. In this way, the reader can learn about the structure of the compounds having the best antidiabetic activity. The compounds, whose synthesis was described in the article but did not appear on the figures presenting the structures of the most active inhibitors, did not show proper activity as inhibitors. Thus, the article also presents studies that have not yielded the desired results and show directions of research that should not be followed. In order to show the directions of the latest research, articles from 2018 to 2019 are described in a separate Sect. 5. In Sect. 6, biological mechanisms of action of the glycosides and patents of marketed drugs are described.
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Affiliation(s)
- Aleksandra Pałasz
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland.
| | - Dariusz Cież
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Bartosz Trzewik
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Katarzyna Miszczak
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Grzegorz Tynor
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Bartłomiej Bazan
- Department of Organic Chemistry, Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
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46
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Hansen T, Lebedel L, Remmerswaal WA, van der Vorm S, Wander DPA, Somers M, Overkleeft HS, Filippov DV, Désiré J, Mingot A, Bleriot Y, van der Marel GA, Thibaudeau S, Codée JDC. Defining the S N1 Side of Glycosylation Reactions: Stereoselectivity of Glycopyranosyl Cations. ACS CENTRAL SCIENCE 2019; 5:781-788. [PMID: 31139714 PMCID: PMC6535769 DOI: 10.1021/acscentsci.9b00042] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Indexed: 05/12/2023]
Abstract
The broad application of well-defined synthetic oligosaccharides in glycobiology and glycobiotechnology is largely hampered by the lack of sufficient amounts of synthetic carbohydrate specimens. Insufficient knowledge of the glycosylation reaction mechanism thwarts the routine assembly of these materials. Glycosyl cations are key reactive intermediates in the glycosylation reaction, but their high reactivity and fleeting nature have precluded the determination of clear structure-reactivity-stereoselectivity principles for these species. We report a combined experimental and computational method that connects the stereoselectivity of oxocarbenium ions to the full ensemble of conformations these species can adopt, mapped in conformational energy landscapes (CEL), in a quantitative manner. The detailed description of stereoselective SN1-type glycosylation reactions firmly establishes glycosyl cations as true reaction intermediates and will enable the generation of new stereoselective glycosylation methodology.
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Affiliation(s)
- Thomas Hansen
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Ludivine Lebedel
- UMR-CNRS
7285, IC2MP, Equipe “Synthèse Organique”, Université de Poitiers, 4 rue Michel Brunet, TSA 51106, Poitiers Cedex 9 86073, France
| | - Wouter A. Remmerswaal
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Stefan van der Vorm
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Dennis P. A. Wander
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Mark Somers
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Herman S. Overkleeft
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Dmitri V. Filippov
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Jérôme Désiré
- UMR-CNRS
7285, IC2MP, Equipe “Synthèse Organique”, Université de Poitiers, 4 rue Michel Brunet, TSA 51106, Poitiers Cedex 9 86073, France
| | - Agnès Mingot
- UMR-CNRS
7285, IC2MP, Equipe “Synthèse Organique”, Université de Poitiers, 4 rue Michel Brunet, TSA 51106, Poitiers Cedex 9 86073, France
| | - Yves Bleriot
- UMR-CNRS
7285, IC2MP, Equipe “Synthèse Organique”, Université de Poitiers, 4 rue Michel Brunet, TSA 51106, Poitiers Cedex 9 86073, France
| | | | - Sebastien Thibaudeau
- UMR-CNRS
7285, IC2MP, Equipe “Synthèse Organique”, Université de Poitiers, 4 rue Michel Brunet, TSA 51106, Poitiers Cedex 9 86073, France
| | - Jeroen D. C. Codée
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
- E-mail:
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47
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Kurfiřt M, Červenková Št’astná L, Dračínský M, Müllerová M, Hamala V, Cuřínová P, Karban J. Stereoselectivity in Glycosylation with Deoxofluorinated Glucosazide and Galactosazide Thiodonors. J Org Chem 2019; 84:6405-6431. [DOI: 10.1021/acs.joc.9b00705] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Martin Kurfiřt
- Institute of Chemical Process Fundamentals of the CAS, v. v. i, Rozvojová 135, 16502 Praha, Czech Republic
| | - Lucie Červenková Št’astná
- Institute of Chemical Process Fundamentals of the CAS, v. v. i, Rozvojová 135, 16502 Praha, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo náměstí 542/2, 16610 Praha, Czech Republic
| | - Monika Müllerová
- Institute of Chemical Process Fundamentals of the CAS, v. v. i, Rozvojová 135, 16502 Praha, Czech Republic
| | - Vojtěch Hamala
- Institute of Chemical Process Fundamentals of the CAS, v. v. i, Rozvojová 135, 16502 Praha, Czech Republic
| | - Petra Cuřínová
- Institute of Chemical Process Fundamentals of the CAS, v. v. i, Rozvojová 135, 16502 Praha, Czech Republic
| | - Jindřich Karban
- Institute of Chemical Process Fundamentals of the CAS, v. v. i, Rozvojová 135, 16502 Praha, Czech Republic
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48
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Yu F, Li J, DeMent PM, Tu YJ, Schlegel HB, Nguyen HM. Phenanthroline-Catalyzed Stereoretentive Glycosylations. Angew Chem Int Ed Engl 2019; 58:6957-6961. [PMID: 30920099 DOI: 10.1002/anie.201901346] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/07/2019] [Indexed: 11/08/2022]
Abstract
Carbohydrates are essential moieties of many bioactive molecules in nature. However, efforts to elucidate their modes of action are often impeded by limitations in synthetic access to well-defined oligosaccharides. Most of the current methods rely on the design of specialized coupling partners to control selectivity during the formation of glycosidic bonds. Reported herein is the use of a commercially available phenanthroline to catalyze stereoretentive glycosylation with glycosyl bromides. The method provides efficient access to α-1,2-cis glycosides. This protocol has been performed for the large-scale synthesis of an octasaccharide adjuvant. Density-functional theory calculations, together with kinetic studies, suggest that the reaction proceeds by a double SN 2 mechanism.
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Affiliation(s)
- Fei Yu
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
| | - Jiayi Li
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
| | - Paul M DeMent
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
| | - Yi-Jung Tu
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
| | | | - Hien M Nguyen
- Department of Chemistry, Wayne State University, Detroit, MI 48202, USA
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49
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Yu F, Li J, DeMent PM, Tu Y, Schlegel HB, Nguyen HM. Phenanthroline‐Catalyzed Stereoretentive Glycosylations. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201901346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fei Yu
- Department of ChemistryWayne State University Detroit MI 48202 USA
| | - Jiayi Li
- Department of ChemistryWayne State University Detroit MI 48202 USA
| | - Paul M. DeMent
- Department of ChemistryWayne State University Detroit MI 48202 USA
| | - Yi‐Jung Tu
- Department of ChemistryWayne State University Detroit MI 48202 USA
| | | | - Hien M. Nguyen
- Department of ChemistryWayne State University Detroit MI 48202 USA
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50
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Hayashi T, Kehr G, Bergander K, Gilmour R. Stereospecific α‐Sialylation by Site‐Selective Fluorination. Angew Chem Int Ed Engl 2019; 58:3814-3818. [DOI: 10.1002/anie.201812963] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/21/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Taiki Hayashi
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Gerald Kehr
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Klaus Bergander
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität Münster Corrensstrasse 40 48149 Münster Germany
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