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Mai-Linde Y, Linker T. Simple Synthesis of 1,2-Dideoxy-2-Vinyl Carbohydrates by Tin-Free Radical Reactions of Xanthates. Chemistry 2024; 30:e202302118. [PMID: 37779098 DOI: 10.1002/chem.202302118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/03/2023]
Abstract
Vinyl-substituted carbohydrates have been synthesized from glycals derived from hexoses and pentoses. Key step is the radical reaction of xanthates in the presence of triethylborane, a non-toxic reagent. The mechanism has been investigated by isolation of various side products, which speak for a reversibility of the cyclopropylmethyl radical ring-opening. Compared to reactions with tributyltin hydride, higher regioselectivities in favor of the 2-vinyl-substituted sugars have been obtained. Yields are slightly lower with triethylborane, but all products have been isolated in analytically pure form. The new reaction is applicable to benzyl- and silyl-protected carbohydrates, which makes free sugars accessible as well. Overall, more than 15 1,2-dideoxy-2-vinyl carbohydrates have been synthesized from simple precursors in only few steps.
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Affiliation(s)
- Yasemin Mai-Linde
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam/Golm, Germany
| | - Torsten Linker
- Department of Chemistry, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam/Golm, Germany
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Blériot Y. Contributing to the Study of Enzymatic and Chemical Glycosyl Transfer Through the Observation and Mimicry of Glycosyl Cations. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1706073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
AbstractThis account describes our efforts dedicated to: 1) the design of glycomimetics aimed at targeting therapeutically relevant carbohydrate processing enzymes, and 2) the observation, characterization, and exploitation of glycosyl cations as a tool for studying the glycosylation reaction. These findings have brought important data regarding this key ionic species as well as innovative strategies to access iminosugars of interest.1 Introduction2 The Glycosyl Cation, A Central Species in Glycosciences2.1 A Selection of the Strategies Developed so far to Gain Insights into Glycosyl Cations Structure2.2 When Superacids Meet Carbohydrates3 Chemical Probes to Gain Insights into the Pseudorotational Itinerary of Glycosides During Glycosidic Bond Hydrolysis3.1 Conformationally Locked Glycosides3.1.1 The Xylopyranose Case3.1.2 The Mannopyranose Case3.2 Conformationally Flexible Iminosugars3.2.1 Nojirimycin Ring Homologues3.2.2 Noeuromycin Ring Homologues3.2.3 Seven-Membered Iminosugar C-Glycosides4 N-Acetyl-d-glucosamine Mimics5 Ring Contraction: A Useful Tool to Increase Iminosugar’s Structural Diversity6 Regioselective Deprotection of Iminosugar C-Glycosides to Introduce Diversity at C2 Position7 Conclusion
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Harit VK, Ramesh NG. Amino-functionalized iminocyclitols: synthetic glycomimetics of medicinal interest. RSC Adv 2016. [DOI: 10.1039/c6ra23513a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A review on the syntheses and biological activities of unnatural glycomimetics highlighting the effect of replacement of hydroxyl groups of natural iminosugars by amino functionalities is presented.
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Affiliation(s)
- Vimal Kant Harit
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi - 110016
- India
| | - Namakkal G. Ramesh
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi - 110016
- India
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Hattie M, Cekic N, Debowski AW, Vocadlo DJ, Stubbs KA. Modifying the phenyl group of PUGNAc: reactivity tuning to deliver selective inhibitors for N-acetyl-d-glucosaminidases. Org Biomol Chem 2016; 14:3193-7. [DOI: 10.1039/c6ob00297h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of analogues of the potentN-acetylhexosamindase inhibitor PUGNAc are described and were found to vary in both potency and selectivity against a set of biologically importantN-acetyl-d-glucosaminidases.
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Affiliation(s)
- Mitchell Hattie
- School of Chemistry and Biochemistry
- The University of Western Australia
- Crawley
- Australia
| | - Nevena Cekic
- Department of Chemistry
- Simon Fraser University
- Burnaby
- Canada
| | - Aleksandra W. Debowski
- School of Chemistry and Biochemistry
- The University of Western Australia
- Crawley
- Australia
- School of Pathology and Laboratory Medicine
| | - David J. Vocadlo
- Department of Chemistry
- Simon Fraser University
- Burnaby
- Canada
- Department of Molecular Biology and Biochemistry
| | - Keith A. Stubbs
- School of Chemistry and Biochemistry
- The University of Western Australia
- Crawley
- Australia
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Malik G, Ferry A, Guinchard X, Cresteil T, Crich D. NO Bond as a Glycosidic-Bond Surrogate: Synthetic Studies Toward PolyhydroxylatedN-Alkoxypiperidines. Chemistry 2012; 19:2168-79. [DOI: 10.1002/chem.201202374] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 09/25/2012] [Indexed: 01/23/2023]
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Pérez-Castells J, Fontanella M, Ardá A, Canãda FJ, Sollogoub M, Blériot Y, Jiménez-Barbero J. Conformational analysis of seven-membered 1-N-iminosugars by NMR and molecular modelling. NEW J CHEM 2012. [DOI: 10.1039/c2nj20967e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Malik G, Guinchard X, Crich D. Asymmetric Synthesis of Polyhydroxylated N-Alkoxypiperidines by Ring-Closing Double Reductive Amination: Facile Preparation of Isofagomine and Analogues. Org Lett 2011; 14:596-9. [DOI: 10.1021/ol203213f] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gaëlle Malik
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Xavier Guinchard
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - David Crich
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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Li H, Marcelo F, Bello C, Vogel P, Butters TD, Rauter AP, Zhang Y, Sollogoub M, Blériot Y. Design and synthesis of acetamido tri- and tetra-hydroxyazepanes: Potent and selective β-N-acetylhexosaminidase inhibitors. Bioorg Med Chem 2009; 17:5598-604. [DOI: 10.1016/j.bmc.2009.06.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Revised: 06/04/2009] [Accepted: 06/12/2009] [Indexed: 12/27/2022]
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New Synthetic Seven-Membered 1-Azasugars Displaying Potent Inhibition Towards Glycosidases and Glucosylceramide Transferase. Chembiochem 2008; 9:253-60. [DOI: 10.1002/cbic.200700496] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Efficient synthesis from d-lyxonolactone of 2-acetamido-1,4-imino-1,2,4-trideoxy-l-arabinitol LABNAc, a potent pyrrolidine inhibitor of hexosaminidases. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.04.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Stubbs KA, Zhang N, Vocadlo DJ. A divergent synthesis of 2-acyl derivatives of PUGNAc yields selective inhibitors of O-GlcNAcase. Org Biomol Chem 2006; 4:839-45. [PMID: 16493467 DOI: 10.1039/b516273d] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A divergent route facilitating the rapid synthesis of a series of O-(2-acetamido-2-deoxy-D-glucopyranosylidene)amino N-phenylcarbamate (PUGNAc)-based inhibitors, bearing different N-acyl groups has been developed. All compounds of this series are inhibitors of both human O-GlcNAcase and human beta-hexosaminidase, yet some effectively exploit differences between the active site architectures of these two human enzymes which render them selective for O-GlcNAcase. Such inhibitors may be valuable tools in dissecting the role of the O-GlcNAc post-translational modification at the cellular and organismal level since these compounds may have different pharmacokinetic properties when compared to other inhibitors of beta-N-acetyl-glucosaminidases.
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Affiliation(s)
- Keith A Stubbs
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A 1S6
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Timmer MSM, Vinciano Chumillas M, Donker‐Koopman WE, Aerts JMFG, van derMarel GA, Overkleeft HS, van Boom JH. Selective Cross‐Metathesis ofC‐Allyl‐Glycosides. J Carbohydr Chem 2005. [DOI: 10.1080/07328300500174887] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Banfi L, Guanti G, Paravidino M, Riva R. Asymmetrized tris(hydroxymethyl)methane as a precursor of N- and O-containing 6-membered heterocycles through ring-closing metathesis. Org Biomol Chem 2005; 3:1729-37. [PMID: 15858657 DOI: 10.1039/b502952j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel synthetic application of asymmetrized tris(hydroxymethyl)methane (THYM), obtained in both enantiomeric forms in high e.e. via a chemoenzymatic procedure, is described. Starting from the common precursor , N- and O-containing 6-membered heterocycles have been prepared exploiting ring-closing metathesis as the key step. Possible elaborations of the double bond in and have been explored and, in the case of , conversion into the glycosidase inhibitor isofagomine has been achieved.
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Affiliation(s)
- Luca Banfi
- Dipartimento di Chimica e Chimica Industriale, Via Dodecaneso 31, I-16146, Genova, Italy
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Xie J, Güveli T, Hebbe S, Dechoux L. Synthesis of novel 1-N-iminosugars from chiral nonracemic bicyclic lactams. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.121] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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