1
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Kato S, Kimura M, Komatsu Y, Miyagawa K, Ishida M, Ebihara M, Niyomura O, Nakanishi W, Hayashi S. Synthesis, structures and reactions of acylsulfenyl iodides with theoretical investigations. RSC Adv 2023; 13:12035-12049. [PMID: 37077270 PMCID: PMC10108833 DOI: 10.1039/d3ra00646h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/10/2023] [Indexed: 04/21/2023] Open
Abstract
A series of acylsulfenyl iodides (RCOSI) were synthesized by the reactions of carbothioic acid group 11-16 element derivatives with iodine or N-iodosuccinimides in moderate to good yields. The structure of the PhCOSI was nearly square planar based on the X-ray analysis, where the C[double bond, length as m-dash]O⋯I distance (3.153(5) Å) was significantly shorter than the sum of the van der Waals radii of the atoms (Σr vdW), indicating close contact within the molecule. The distances between an iodine atom and the neighbouring two iodine atoms were also less than Σr vdW, perhaps due to the energy lowering effect of the interactions. The acylsulfenyl iodides readily reacted with alkenes and alkynes to give the expected addition products in moderate to good yields at approximately 0 °C. A new synthesis of acylated sulfines, sulfenamides and sulfenochalcogenides using acylsulfenyl iodides is also described. Theoretical calculations were performed on PhCOSI with the Sapporo-TZP(+1s1p) basis sets at the MP2 level, which perfectly reproduced the observed structures. Similar calculations were performed on the reactions, exemplified by those of MeCOSI and CH2[double bond, length as m-dash]CH2, together with those of MeSI and CH2[double bond, length as m-dash]CH2. Mechanisms for both reactions were proposed, which were very similar. The proposed mechanism for the former was understood based on that of the latter. For both mechanisms, the episulfuranes and episulfonium ions played an important role. The dynamic and static nature of the bonds in the COSI group of PhCOSI and MeCOSI were elucidated based on QTAIM dual functional analysis.
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Affiliation(s)
- Shinzi Kato
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Masahiro Kimura
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Yukio Komatsu
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Kenji Miyagawa
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Masaru Ishida
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Masahiro Ebihara
- Department of Chemistry, Faculty of Engineering, Gifu University Yanagido 1-1 Gifu 501-1193 Japan
| | - Osamu Niyomura
- Department of Applied Chemistry, College of Engineering, Chubu University 1200 Matsumoto-cho Kasugai 487-8501 Japan
| | - Waro Nakanishi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
| | - Satoko Hayashi
- Faculty of Systems Engineering, Wakayama University 930 Sakaedani Wakayama 640-8510 Japan
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2
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Pillet L, Lim D, Almulhim N, Benítez-Mateos AI, Paradisi F. Novel triple mutant of an extremophilic glycosyl hydrolase enables the rapid synthesis of thioglycosides. Chem Commun (Camb) 2022; 58:12118-12121. [PMID: 36226508 PMCID: PMC9609006 DOI: 10.1039/d2cc04660a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/06/2022] [Indexed: 07/25/2023]
Abstract
In order to expand the toolbox of enzymes available for thioglycoside synthesis, we describe here the first example of an extremophilic glycosyl hydrolase from Halothermothrix orenii (HorGH1) engineered towards thioglycosynthase activity with a novel combination of mutations. Using the triple mutant, HorGH1 M299R/E166A/E354G, a range of thioglycosides from glycosyl fluoride donors and aromatic thiols could be synthesised with exquisite stereoselectivity and good to excellent conversions (61-93%).
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Affiliation(s)
- Lauriane Pillet
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.
| | - David Lim
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.
| | - Nourah Almulhim
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, Nottingham, UK
| | - Ana I Benítez-Mateos
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.
| | - Francesca Paradisi
- Department of Chemistry, Biochemistry, and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland.
- School of Chemistry, University of Nottingham, University Park, NG7 2RD, Nottingham, UK
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3
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Novel transformation products from glucosinolate-derived thioglucose and isothiocyanates formed during cooking. Food Res Int 2022; 157:111237. [DOI: 10.1016/j.foodres.2022.111237] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/23/2022] [Accepted: 04/07/2022] [Indexed: 02/05/2023]
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4
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Convenient synthesis of mixed S–Se-linked pseudodisaccharides by sulfur and selenium exchange. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Ribeiro Morais G, Falconer RA. Glycosyl disulfides: importance, synthesis and application to chemical and biological systems. Org Biomol Chem 2021; 19:82-100. [DOI: 10.1039/d0ob02079f] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This review explores methodologies for the preparation of glycosyl disulfides, their utility as intermediates in carbohydrate synthesis, and evaluates their biological impact in glycoscience and beyond.
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Affiliation(s)
- Goreti Ribeiro Morais
- Institute of Cancer Therapeutics
- Faculty of Life Sciences
- University of Bradford
- Bradford BD7 1DP
- UK
| | - Robert A. Falconer
- Institute of Cancer Therapeutics
- Faculty of Life Sciences
- University of Bradford
- Bradford BD7 1DP
- UK
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6
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Ge J, Zhang L, Pu L, Zhang Y, Pei Z, Dong H. The Oxidation of
S
‐Acetyl by Nitrite: Mechanism and Application. ChemistrySelect 2020. [DOI: 10.1002/slct.202003566] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jian‐Tao Ge
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
- School of Chemistry and Chemical Engineering Hubei Polytechnic University Guilinbei Road 16 Huangshi 435003 P. R. China
| | - Le‐Feng Zhang
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
| | - Liang Pu
- College of Chemistry and Pharmacy Northwest A&F University Yangling 712100 Shaanxi P. R. China
| | - Ying Zhang
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
| | - Zhi‐Chao Pei
- College of Chemistry and Pharmacy Northwest A&F University Yangling 712100 Shaanxi P. R. China
| | - Hai Dong
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry & Chemical Engineering Huazhong University of Science & Technology Luoyu Road 1037 430074 Wuhan P. R. China
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7
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Hamsath A, Xian M. Chemistry and Chemical Biology of Selenenyl Sulfides and Thioseleninic Acids. Antioxid Redox Signal 2020; 33:1143-1157. [PMID: 32151152 PMCID: PMC7698873 DOI: 10.1089/ars.2020.8083] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 12/14/2022]
Abstract
Significance: Selenenyl sulfides (RSeSRs) and thioseleninic acids (RSeSHs) are the monoselenium (Se) analogs of disulfides and persulfides that contain Se-S bonds. These bonds are found in several antioxidant-regenerating enzymes as derivatives of selenocysteine, making them an important player in redox biology as it pertains to sulfur redox regulation. Recent Advances: Mechanistic studies of redox-regulating selenoenzymes such as thioredoxin reductase and glutathione peroxidase suggest crucial Se-S bonds in the active sites. Peptide models and small-molecule mimics of these active sites have been prepared to study their fundamental chemistry. These advances help pave the road to better understand the functions of the Se-S bond in the body. Critical Issues: The Se-S bond is unstable at atmospheric temperatures and pressures. Therefore, studying their properties proposes a major challenge. Currently, there are no trapping reagents specific to RSeSRs or RSeSHs, making their presence, identity, and fates in biological environments difficult to track. Future Directions: Further understanding of the fundamental chemistry/biochemistry of RSeSRs and RSeSHs is needed to understand what their intracellular targets are and to what extent they impact signaling. Besides antioxidant regeneration and peroxide radical reduction, the roles of RSeSR and RSeSHs in other systems need to be further explored.
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Affiliation(s)
- Akil Hamsath
- Department of Chemistry, Washington State University, Pullman, Washington, USA
| | - Ming Xian
- Department of Chemistry, Washington State University, Pullman, Washington, USA
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8
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Protecting group migrations in carbohydrate chemistry. Carbohydr Res 2020; 497:108151. [PMID: 32977215 DOI: 10.1016/j.carres.2020.108151] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 09/06/2020] [Accepted: 09/08/2020] [Indexed: 11/22/2022]
Abstract
Protecting groups are valuable in chemo- and regioselective synthetic manipulations. In particular, they are indispensable in carbohydrate chemistry. Although a wide array of protecting groups are available at the disposal of carbohydrate chemists, their stability and orthogonality make the choice of protecting groups challenging. Another important factor is the migratory aptitude of different protecting groups used in carbohydrate chemistry. Migration of commonly used groups like silyl, acetal and acyl groups under various reaction conditions are discussed. Synthetic application of predicted migrations, alternate protecting groups to avoid migration and conditions favoring and disfavoring migrations are discussed in this review.
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9
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Tamburrini A, Colombo C, Bernardi A. Design and synthesis of glycomimetics: Recent advances. Med Res Rev 2020; 40:495-531. [DOI: 10.1002/med.21625] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/06/2019] [Accepted: 07/09/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Alice Tamburrini
- Dipartimento di ChimicaUniversita’ degli Studi di Milano Milano Italy
| | - Cinzia Colombo
- Dipartimento di ChimicaUniversita’ degli Studi di Milano Milano Italy
| | - Anna Bernardi
- Dipartimento di ChimicaUniversita’ degli Studi di Milano Milano Italy
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10
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Discovery of processive catalysis by an exo-hydrolase with a pocket-shaped active site. Nat Commun 2019; 10:2222. [PMID: 31110237 PMCID: PMC6527550 DOI: 10.1038/s41467-019-09691-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 03/22/2019] [Indexed: 11/08/2022] Open
Abstract
Substrates associate and products dissociate from enzyme catalytic sites rapidly, which hampers investigations of their trajectories. The high-resolution structure of the native Hordeum exo-hydrolase HvExoI isolated from seedlings reveals that non-covalently trapped glucose forms a stable enzyme-product complex. Here, we report that the alkyl β-d-glucoside and methyl 6-thio-β-gentiobioside substrate analogues perfused in crystalline HvExoI bind across the catalytic site after they displace glucose, while methyl 2-thio-β-sophoroside attaches nearby. Structural analyses and multi-scale molecular modelling of nanoscale reactant movements in HvExoI reveal that upon productive binding of incoming substrates, the glucose product modifies its binding patterns and evokes the formation of a transient lateral cavity, which serves as a conduit for glucose departure to allow for the next catalytic round. This path enables substrate-product assisted processive catalysis through multiple hydrolytic events without HvExoI losing contact with oligo- or polymeric substrates. We anticipate that such enzyme plasticity could be prevalent among exo-hydrolases. Enzyme substrates and products often diffuse too rapidly to assess the catalytic implications of these movements. Here, the authors characterise the structural basis of product and substrate diffusion for an exo-hydrolase and discover a substrate-product assisted processive catalytic mechanism.
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11
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Zhang X, Chen H, Ji Y, Jiang K, Chen H. Sulfur Transfer Versus Phenyl Ring Transfer in the Gas Phase: Sequential Loss of CH 3OH and CH 3O-P=O from Protonated Phosphorothioates. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:459-467. [PMID: 30569428 DOI: 10.1007/s13361-018-2098-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 10/22/2018] [Accepted: 10/24/2018] [Indexed: 06/09/2023]
Abstract
Collisional activation fragmentation of protonated phosphorothioates leads to skeletal rearrangement and formation of aryl sulfenylium cation (R-PhS+) via successive eliminations of CH3OH and CH3O-P=O. To better understand this unusual fragmentation reaction, isotope-labeling experiments and density functional theory (DFT) calculations were carried out to investigate two mechanistic pathways. In route 1, a direct intramolecular transfer of the R-phenyl group occurs from the oxygen atom to the sulfur atom on thiophosphoryl to form methoxyl S-(3-methyl-4-methylsulfanyl-phenyl) phosphonium thiolate (a4), which subsequently dissociates to form the m/z 169 cation. In route 2, the sulfur atom of the thiophosphoryl group undergoes two stepwise transfer (1,4-migration to the ortho-carbon atom of the phenyl ring followed by 1,2-migration to the ipso-carbon atom) to form an intermediate isomer, which undergoes the subsequent dissociation to form the m/z 169 cation. DFT calculations suggested that route 2 was more favorable than route 1 from the point view of kinetics. Graphical Abstract.
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Affiliation(s)
- Xiaoping Zhang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China
| | - Honghan Chen
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China
| | - Yin Ji
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China
| | - Kezhi Jiang
- Key Laboratory of Organosilicon Chemistry and Material Technology, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Huanwen Chen
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, People's Republic of China.
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12
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Ibrahim N, Alami M, Messaoudi S. Recent Advances in Transition-Metal-Catalyzed Functionalization of 1-Thiosugars. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800449] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nada Ibrahim
- BioCIS, Univ. Paris-Sud; CNRS; University Paris-Saclay; 92290 Châtenay-Malabry France
| | - 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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13
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Doyle LM, O'Sullivan S, Di Salvo C, McKinney M, McArdle P, Murphy PV. Stereoselective Epimerizations of Glycosyl Thiols. Org Lett 2018; 19:5802-5805. [PMID: 29039672 DOI: 10.1021/acs.orglett.7b02760] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Glycosyl thiols are widely used in stereoselective S-glycoside synthesis. Their epimerization from 1,2-trans to 1,2-cis thiols (e.g., equatorial to axial epimerization in thioglucopyranose) was attained using TiCl4, while SnCl4 promoted their axial-to-equatorial epimerization. The method included application for stereoselective β-d-manno- and β-l-rhamnopyranosyl thiol formation. Complex formation explains the equatorial preference when using SnCl4, whereas TiCl4 can shift the equilibrium toward the 1,2-cis thiol via 1,3-oxathiolane formation.
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Affiliation(s)
- Lisa M Doyle
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland H91 TK33
| | - Shane O'Sullivan
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland H91 TK33
| | - Claudia Di Salvo
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland H91 TK33
| | - Michelle McKinney
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland H91 TK33
| | - Patrick McArdle
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland H91 TK33
| | - Paul V Murphy
- School of Chemistry, National University of Ireland Galway , University Road, Galway, Ireland H91 TK33
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14
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15
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Englert C, Pröhl M, Czaplewska JA, Fritzsche C, Preußger E, Schubert US, Traeger A, Gottschaldt M. d-Fructose-Decorated Poly(ethylene imine) for Human Breast Cancer Cell Targeting. Macromol Biosci 2017; 17. [PMID: 28371343 DOI: 10.1002/mabi.201600502] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 02/03/2017] [Indexed: 01/27/2023]
Abstract
The high affinity of GLUT5 transporter for d-fructose in breast cancer cells has been discussed intensely. In this contribution, high molar mass linear poly(ethylene imine) (LPEI) is functionalized with d-fructose moieties to combine the selectivity for the GLUT5 transporter with the delivery potential of PEI for genetic material. The four-step synthesis of a thiol-group bearing d-fructose enables the decoration of a cationic polymer backbone with d-fructose via thiol-ene photoaddition. The functionalization of LPEI is confirmed by 2D NMR techniques, elemental analysis, and size exclusion chromatography. Importantly, a d-fructose decoration of 16% renders the polymers water-soluble and eliminates the cytotoxicity of PEI in noncancer L929 cells, accompanied by a reduced unspecific cellular uptake of the genetic material. In contrast, the cytotoxicity as well as the cell specific uptake is increased for triple negative MDA-MB-231 breast cancer cells. Therefore, the introduction of d-fructose shows superior potential for cell targeting, which can be assumed to be GLUT5 dependent.
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Affiliation(s)
- Christoph Englert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Michael Pröhl
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Justyna A Czaplewska
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Carolin Fritzsche
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Elisabeth Preußger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Anja Traeger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Michael Gottschaldt
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
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16
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Weng SS, Hsieh KY, Zeng ZJ. Dehydrative Thioglycosylation of 1-Hydroxyl Glycosides Catalyzed by In Situ-Generated AlI3. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201600828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shiue-Shien Weng
- Department of Chemistry; ROC Military Academy; Kaohsiung 830 Taiwan, ROC
| | - Kun-Yi Hsieh
- Department of Chemistry; ROC Military Academy; Kaohsiung 830 Taiwan, ROC
| | - Zih-Jian Zeng
- Department of Chemistry; ROC Military Academy; Kaohsiung 830 Taiwan, ROC
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17
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Alexander SR, Lim D, Amso Z, Brimble MA, Fairbanks AJ. Protecting group free synthesis of glycosyl thiols from reducing sugars in water; application to the production of N-glycan glycoconjugates. Org Biomol Chem 2017; 15:2152-2156. [DOI: 10.1039/c7ob00112f] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Un-protected 2-acetamido terminated reducing sugars may be converted into the corresponding glycosyl thiols in water, and conjugated to peptides using the thiol–ene click reaction without recourse to any protecting groups.
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Affiliation(s)
- S. R. Alexander
- Department of Chemistry
- University of Canterbury
- Christchurch 8140
- New Zealand
| | - D. Lim
- Department of Chemistry
- University of Canterbury
- Christchurch 8140
- New Zealand
| | - Z. Amso
- School of Chemical Sciences
- The University of Auckland
- Auckland 1142
- New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery
| | - M. A. Brimble
- School of Chemical Sciences
- The University of Auckland
- Auckland 1142
- New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery
| | - A. J. Fairbanks
- Department of Chemistry
- University of Canterbury
- Christchurch 8140
- New Zealand
- Biomolecular Interaction Centre
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18
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Illyés TZ, Balla S, Bényei A, Kumar AA, Timári I, Kövér KE, Szilágyi L. Exploring the Syntheses of Novel Glycomimetics. Carbohydrate Derivatives with Se-S
- or Se-Se
- Glycosidic Linkages. ChemistrySelect 2016. [DOI: 10.1002/slct.201600628] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tünde-Zita Illyés
- Department of Organic Chemistry; University of Debrecen; H-4002 Debrecen Pf.400. Hungary
| | - Sára Balla
- Department of Organic Chemistry; University of Debrecen; H-4002 Debrecen Pf.400. Hungary
| | - Attila Bényei
- Department of Pharmaceutical Chemistry; University of Debrecen; H-4002 Debrecen Pf.400 Hungary
| | - Ambati Ashok Kumar
- Department of Organic Chemistry; University of Debrecen; H-4002 Debrecen Pf.400. Hungary
- Department of Inorganic and Analytical Chemistry; University of Debrecen; H-4002 Debrecen Pf.400 Hungary
| | - István Timári
- Department of Inorganic and Analytical Chemistry; University of Debrecen; H-4002 Debrecen Pf.400 Hungary
| | - Katalin E. Kövér
- Department of Inorganic and Analytical Chemistry; University of Debrecen; H-4002 Debrecen Pf.400 Hungary
| | - László Szilágyi
- Department of Organic Chemistry; University of Debrecen; H-4002 Debrecen Pf.400. Hungary
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19
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Fang Y, Wang SY, Shen XB, Ji SJ. Base-promoted cascade reaction of isocyanides, selenium and amines: a practical approach to 2-aminobenzo[d][1,3]selenazines under metal-free conditions. Org Chem Front 2015. [DOI: 10.1039/c5qo00150a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the construction of 2-aminobenzo[d][1,3]selenazines under metal-free conditions was established.
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Affiliation(s)
- Yi Fang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Xiao-Bin Shen
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou
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20
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Salameh BA, Abu-Safieh KA, Al-Kaabenah SRA, Al-Qawasmeh RA. Synthesis and characterization of new N-phenylmaleimide thioglycosides. RESEARCH ON CHEMICAL INTERMEDIATES 2014. [DOI: 10.1007/s11164-013-1146-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Komor R, Kasprzycka A, Pastuch-Gawołek G, Szeja W. Simple synthesis of glycosylthiols and thioglycosides by rearrangement of O-glycosyl thionocarbamates. Carbohydr Res 2014; 396:37-42. [DOI: 10.1016/j.carres.2014.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 06/30/2014] [Accepted: 07/01/2014] [Indexed: 11/16/2022]
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22
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Ragupathy L, Millar DG, Tirelli N, Cellesi F. An Orthogonal Click-Chemistry Approach to Design Poly(glycerol monomethacrylate)-based Nanomaterials for Controlled Immunostimulation. Macromol Biosci 2014; 14:1528-38. [DOI: 10.1002/mabi.201400146] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 07/01/2014] [Indexed: 12/25/2022]
Affiliation(s)
- Lakshminarayanan Ragupathy
- School of Pharmacy and Pharmaceutical Sciences; University of Manchester; Oxford Road Manchester M13 9PT UK
| | - Douglas G. Millar
- Faculty of Life Sciences; University of Manchester; M13 9PT United Kingdom
| | - Nicola Tirelli
- School of Biomedicine and School of Materials; University of Manchester, Laboratory for Polymers and Biomaterials, Stopford Building; Manchester M13 9PT UK
| | - Francesco Cellesi
- School of Pharmacy and Pharmaceutical Sciences; University of Manchester; Oxford Road Manchester M13 9PT UK
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23
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Villalonga ML, Díez P, Sánchez A, Gamella M, Pingarrón JM, Villalonga R. Neoglycoenzymes. Chem Rev 2014; 114:4868-917. [DOI: 10.1021/cr400290x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Paula Díez
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
| | - Alfredo Sánchez
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
| | - María Gamella
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
| | - José M. Pingarrón
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
- IMDEA
Nanoscience, Cantoblanco Universitary City, 28049-Madrid, Spain
| | - Reynaldo Villalonga
- Department
of Analytical Chemistry, Faculty of Chemistry, Complutense University of Madrid, 28040-Madrid, Spain
- IMDEA
Nanoscience, Cantoblanco Universitary City, 28049-Madrid, Spain
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24
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Silica Adsorbents with Well-Defined Peracetylated Thiosaccharide Surfaces: Synthesis and Use for Stereoselective Separations in RP and NP HPLC. Chromatographia 2013. [DOI: 10.1007/s10337-013-2549-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Herczeg M, Mező E, Eszenyi D, Lázár L, Csávás M, Bereczki I, Antus S, Borbás A. Synthesis of 6-Sulfonatomethyl Thioglycosides by Nucleophilic Substitution: Methods to Prevent 1→6 Anomeric Group Migration of Thioglycoside 6-O-Triflates. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300681] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Jana M, Misra AK. Stereoselective Synthesis of β-Glycosyl Thiols and Their Synthetic Applications. J Org Chem 2013; 78:2680-6. [DOI: 10.1021/jo302115k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Manas Jana
- Bose Institute, Division of Molecular Medicine, P-1/12,
C.I.T. Scheme VII M, Kolkata 700054, India
| | - Anup Kumar Misra
- Bose Institute, Division of Molecular Medicine, P-1/12,
C.I.T. Scheme VII M, Kolkata 700054, India
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27
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Dere RT, Kumar A, Kumar V, Zhu X, Schmidt RR. Synthesis of Glycosylthiols and Reactivity Studies. J Org Chem 2011; 76:7539-45. [DOI: 10.1021/jo200624e] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ravindra T. Dere
- Fachbereich Chemie, Universität Konstanz, Fach 725, D-78457 Konstanz, Germany
| | - Amit Kumar
- Fachbereich Chemie, Universität Konstanz, Fach 725, D-78457 Konstanz, Germany
| | - Vipin Kumar
- Fachbereich Chemie, Universität Konstanz, Fach 725, D-78457 Konstanz, Germany
| | - Xiangming Zhu
- College of Chemistry & Life Sciences, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
| | - Richard R. Schmidt
- Fachbereich Chemie, Universität Konstanz, Fach 725, D-78457 Konstanz, Germany
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28
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Vektariene A, Vektaris G. Theoretical studies on the methylsulfenyl chloride addition to propene. HETEROATOM CHEMISTRY 2010. [DOI: 10.1002/hc.20571] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Lipták A, Lázár L, Borbás A, Antus S. Reactions of phenyl and ethyl 2-O-sulfonyl-1-thio-alpha-D-manno- and beta-D-glucopyranosides with thionucleophiles. Carbohydr Res 2009; 344:2461-7. [PMID: 19853244 DOI: 10.1016/j.carres.2009.08.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Revised: 08/24/2009] [Accepted: 08/30/2009] [Indexed: 11/17/2022]
Abstract
Persubstituted derivatives of phenyl and ethyl 2-O-sulfonyl-1-thio-alpha-D-manno- and beta-D-glucopyranosides were synthesized and reacted either with PhSNa or with MeSNa. The phenyl-1-thio compounds afforded the dithio-1,2-cis-axial/equatorial-alpha-D-glucopyranosides or dithio-1,2-cis-equatorial/axial-beta-D-mannopyranosides by means of S(N)2 type of reactions. Starting from the ethyl-1-thio derivatives intramolecular 1,2-thio-migration took place predominantly. In the case of mannosides both nucleophilic reagents facilitate the formation of 1-SPh- or 1-SEt glycals by elimination. The formation of unsubstituted glycal could also be observed from the ethyl-1-thio derivatives, especially by using PhSNa as a nucleophile. The 1,2-dithio-glycosides are glycosyl donors affording 1,2-trans-2-thio-glycosides.
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Affiliation(s)
- András Lipták
- Research Group for Carbohydrates of the Hungarian Academy of Sciences, H-4010 Debrecen, Hungary
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30
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Recent advances in the synthesis of 2-deoxy-glycosides. Carbohydr Res 2009; 344:1911-40. [DOI: 10.1016/j.carres.2009.07.013] [Citation(s) in RCA: 127] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Accepted: 07/29/2009] [Indexed: 11/23/2022]
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31
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Hou D, Taha HA, Lowary TL. 2,3-Anhydrosugars in Glycoside Bond Synthesis: Mechanism of 2-Deoxy-2-thioaryl Glycoside Formation. J Am Chem Soc 2009; 131:12937-48. [DOI: 10.1021/ja9029945] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dianjie Hou
- Alberta Ingenuity Centre for Carbohydrate Science and Department of Chemistry, The University of Alberta, Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2 Canada
| | - Hashem A. Taha
- Alberta Ingenuity Centre for Carbohydrate Science and Department of Chemistry, The University of Alberta, Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2 Canada
| | - Todd L. Lowary
- Alberta Ingenuity Centre for Carbohydrate Science and Department of Chemistry, The University of Alberta, Gunning-Lemieux Chemistry Centre, Edmonton, Alberta, T6G 2G2 Canada
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32
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Hou D, Lowary TL. 2,3-Anhydrosugars in glycoside bond synthesis: application to furanosyl azides and C-glycosides. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Hou D, Lowary TL. 2,3-Anhydrosugars in glycoside bond synthesis. Application to 2,6-dideoxypyranosides. J Org Chem 2009; 74:2278-89. [PMID: 19249832 DOI: 10.1021/jo900131a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe here the first use of 2,3-anhydrosugars as glycosylating agents for the preparation of 2-deoxypyranosides. In particular, the methodology was used to assemble 2,6-dideoxysugar glycosides. Glycosylation of a panel of alcohols with one of two 6-deoxy-2,3-anhydrosugar thioglycosides (8 and 9) in the presence of a Lewis acid afforded 2,6-dideoxy-2-thiotolyl glycoside products in generally excellent yields with an exclusively syn relationship between the aglycon and the C-3 hydroxyl group. Removal of the 2-thiotolyl group can be achieved upon reaction with tri-n-butyltin hydride and AIBN to give the corresponding 2,6-dideoxy pyranosides. Once developed, the method was applied to the synthesis of oligosaccharide moieties in the natural products apoptolidin and olivomycin A.
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Affiliation(s)
- Dianjie Hou
- Alberta Ingenuity Centre for Carbohydrate Science and Department of Chemistry, The University of Alberta, Gunning-Lemieux Chemistry Centre, Edmonton, Alberta T6G 2G2, Canada
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34
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Manzano VE, Uhrig ML, Varela O. Straightforward synthesis of thiodisaccharides by ring-opening of sugar epoxides. J Org Chem 2008; 73:7224-35. [PMID: 18717587 DOI: 10.1021/jo8012397] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
3,4-Anhydro hexopyranosides have been prepared by diastereoselective epoxidation of derivatives of 2-propyl 3,4-dideoxy-alpha-D-erythro-hex-3-enopyranoside (5), selectively protected at HO-2 and HO-6. The allylic group at C-2, in 5 and derivatives, plays a critical role in the facial selectivity of the epoxidation reaction. Thus, the free HO-2 in 3 (the 6-O-acetyl derivative of 5) directs the attack of m-chloroperbenzoic acid from the more hindered alpha face of the molecule to give 2-propyl 6-O-acetyl-3,4-anhydro-alpha-D-allopyranoside (7) accompanied by the beta epoxide 6 as a very minor product. Reverse diastereoselectivity has been obtained when the HO-2 in 3 was substituted by a bulky tert-butyldimethylsilyl (TBS) group. In this case, the major isomer was the 2-O-TBS derivative of 6 (alpha-D-galacto configuration). The ring-opening of sugar epoxides by nucleophilic per-O-acetyl-1-thio-beta-D-glucopyranose (11) was employed as a convenient approach to the synthesis of (1-->3)- and (1-->4)-thiodisaccharides. For example, ring-opening of the oxirane 7 by 11 led to the expected regioisomeric per-O-acetyl thiodisaccharides beta-D-Glc-S-(1-->3)-4-thio-alpha-D-Glc-O-iPr (12) and beta-D-Glc-S-(1-->4)-4-thio-alpha-D-Gul-O-iPr (13). Regioselectivity in the construction of the (1-->4)-thioglycosidic linkage could be achieved by hindering C-3 of the 3,4-anhydro sugar with a bulky silyloxy group at the vicinal C-2. For instance, coupling of the 2-O-TBS derivative of 7 with 11 led regioselectively to the protected thiodisaccharide beta-D-Glc-S-(1-->4)-4-thio-alpha-D-Glc-O-iPr (27). The utility of the approach was demonstrated through the synthesis of sulfur-linked analogues of naturally occurring (laminarabiose and cellobiose) and non-natural disaccharides (i.e., beta-D-Glc-(1-->4)-alpha-D-Gul).
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Affiliation(s)
- Verónica E Manzano
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
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35
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Dudnik AS, Sromek AW, Rubina M, Kim JT, Kel’in AV, Gevorgyan V. Metal-catalyzed 1,2-shift of diverse migrating groups in allenyl systems as a new paradigm toward densely functionalized heterocycles. J Am Chem Soc 2008; 130:1440-52. [PMID: 18173272 PMCID: PMC3686647 DOI: 10.1021/ja0773507] [Citation(s) in RCA: 256] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general, mild, and efficient 1,2-migration/cycloisomerization methodology toward multisubstituted 3-thio-, seleno-, halo-, aryl-, and alkyl-furans and pyrroles, as well as fused heterocycles, valuable building blocks for synthetic chemistry, has been developed. Moreover, regiodivergent conditions have been identified for C-4 bromo- and thio-substituted allenones and alkynones for the assembly of regioisomeric 2-hetero substituted furans selectively. It was demonstrated that, depending on reaction conditions, ambident substrates can be selectively transformed into furan products, as well as undergo selective 6-exo-dig or Nazarov cyclizations. Our mechanistic investigations have revealed that the transformation proceeds via allenylcarbonyl or allenylimine intermediates followed by 1,2-group migration to the allenyl sp carbon during cycloisomerization. It was found that 1,2-migration of chalcogens and halogens predominantly proceeds via formation of irenium intermediates. Analogous intermediate can also be proposed for 1,2-aryl shift. Furthermore, it was shown that the cycloisomerization cascade can be catalyzed by Brønsted acids, albeit less efficiently, and commonly observed reactivity of Lewis acid catalysts cannot be attributed to the eventual formation of proton. Undoubtedly, thermally induced or Lewis acid-catalyzed transformations proceed via intramolecular Michael addition or activation of the enone moiety pathways, whereas certain carbophilic metals trigger carbenoid/oxonium type pathway. However, a facile cycloisomerization in the presence of cationic complexes, as well as observed migratory aptitude in the cycloisomerization of unsymmetrically disubstituted aryl- and alkylallenes, strongly supports electrophilic nature for this transformation. Full mechanistic details, as well as the scope of this transformation, are discussed.
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Affiliation(s)
- Alexander S. Dudnik
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Anna W. Sromek
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Marina Rubina
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Joseph T. Kim
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Alexander V. Kel’in
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, 4500 SES, M/C 111, Chicago, Illinois 60607-7061
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36
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Beaver MG, Billings SB, Woerpel KA. Nucleophilic Substitution Reactions of 2‐Phenylthio‐Substituted Carbohydrate Acetals and Related Systems: Episulfonium Ions vs. Oxocarbenium Ions as Reactive Intermediates. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700911] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Matthew G. Beaver
- Department of Chemistry, University of California, Irvine, California 92697‐2025, USA, Fax: +1‐949‐824‐9920
| | - Susan B. Billings
- Department of Chemistry, University of California, Irvine, California 92697‐2025, USA, Fax: +1‐949‐824‐9920
| | - K. A. Woerpel
- Department of Chemistry, University of California, Irvine, California 92697‐2025, USA, Fax: +1‐949‐824‐9920
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37
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Gamblin DP, van Kasteren S, Bernardes GJL, Chalker JM, Oldham NJ, Fairbanks AJ, Davis BG. Chemical site-selective prenylation of proteins. MOLECULAR BIOSYSTEMS 2008; 4:558-61. [DOI: 10.1039/b802199f] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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39
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Falconer RA, Toth I. Design, synthesis and biological evaluation of novel lipoamino acid-based glycolipids for oral drug delivery. Bioorg Med Chem 2007; 15:7012-20. [PMID: 17851079 DOI: 10.1016/j.bmc.2007.07.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2007] [Revised: 07/24/2007] [Accepted: 07/24/2007] [Indexed: 10/22/2022]
Abstract
A series of lipoamino acid-based glycolipids were synthesised. Suitably derivatised lipoamino acid derivatives were prepared and conjugated to monosaccharides (including glycosyl azides, isothiocyanates, thiols and sulphones) to yield novel O-, N-, S- and C-linked glycolipids in good yields. Their potential to improve the oral absorption of piperacillin is reported.
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Affiliation(s)
- Robert A Falconer
- Institute of Cancer Therapeutics, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK
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40
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Maiereanu C, Kanai A, Weibel J, Pale P. Synthesis of 2‐Deoxy‐2‐thiophenylglucosyl Azides through 1,2 Thio Migration of Thiophenyl Mannosides. J Carbohydr Chem 2007. [DOI: 10.1080/07328300500409150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Carmen Maiereanu
- a Laboratoire de synthèse et réactivité organique, associé au CNRS , Institut Le Bel, Université L. Pasteur , Strasbourg , France
| | - Akira Kanai
- a Laboratoire de synthèse et réactivité organique, associé au CNRS , Institut Le Bel, Université L. Pasteur , Strasbourg , France
| | - Jean‐Marc Weibel
- a Laboratoire de synthèse et réactivité organique, associé au CNRS , Institut Le Bel, Université L. Pasteur , Strasbourg , France
| | - Patrick Pale
- a Laboratoire de synthèse et réactivité organique, associé au CNRS , Institut Le Bel, Université L. Pasteur , Strasbourg , France
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41
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Vektariene A, Vektaris G, Rankin DWH. DFt study of the regioselectivity of addition of sulfenylchloride to ethenes. HETEROATOM CHEMISTRY 2007. [DOI: 10.1002/hc.20378] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Kim YW, Chen H, Kim JH, Withers SG. Catalytic properties of a mutant β-galactosidase fromXanthomonas manihotisengineered to synthesize galactosyl-thio-β-1,3 and -β-1,4-glycosides. FEBS Lett 2006; 580:4377-81. [PMID: 16844121 DOI: 10.1016/j.febslet.2006.06.095] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2006] [Revised: 06/30/2006] [Accepted: 06/30/2006] [Indexed: 11/24/2022]
Abstract
The identity of the acid/base catalyst of the Family 35 beta-galactosidases from Xanthomonas manihotis (BgaX) has been confirmed as Glu184 by kinetic analysis of mutants modified at that position. The Glu184Ala mutant of BgaX is shown to function as an efficient thioglycoligase, which synthesises thiogalactosides with linkages to the 3 and 4 positions of glucosides and galactosides in high (>80%) yields. Kinetic analysis of the thioglycoligase reveals glycosyl donor K(m) values of 1.5-21 microM and glycosyl acceptor K(m) values from 180 to 500 microM. This mutant should be a valuable catalyst for the synthesis of metabolically stable analogues of this important glycosidic linkage.
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Affiliation(s)
- Young-Wan Kim
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1
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43
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Bernardes GJL, Gamblin DP, Davis BG. The Direct Formation of Glycosyl Thiols from Reducing Sugars Allows One-Pot Protein Glycoconjugation. Angew Chem Int Ed Engl 2006; 45:4007-11. [PMID: 16673441 DOI: 10.1002/anie.200600685] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gonçalo J L Bernardes
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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44
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Bernardes GJL, Gamblin DP, Davis BG. The Direct Formation of Glycosyl Thiols from Reducing Sugars Allows One-Pot Protein Glycoconjugation. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600685] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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46
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Grayson EJ, Ward SJ, Hall AL, Rendle PM, Gamblin DP, Batsanov AS, Davis BG. Glycosyl Disulfides: Novel Glycosylating Reagents with Flexible Aglycon Alteration. J Org Chem 2005; 70:9740-54. [PMID: 16292802 DOI: 10.1021/jo051374j] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Glycosyl disulfides have been shown for the first time to be effective glycosyl donors. Glucosylation and galactosylation of a panel of representative alcohol acceptors allowed the formation of 28 simple glycosides, disaccharides, and glycoamino acids in yields of up to 90%. As well as providing a novel class of effective glycosyl donors, the ability to easily alter the nature of the aglycon and the ability to differently activate donors that differ only in their aglycon simply through altering conditions lends glycosyl disulfide donors to their use in latent-active reactivity tuning strategies.
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Affiliation(s)
- Elizabeth J Grayson
- Department of Chemistry, University of Durham, South Road, Durham, UK, DH1 3LE
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47
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48
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Shao H, Ekthawatchai S, Chen CS, Wu SH, Zou W. 1,2-migration of 2'-oxoalkyl group and concomitant synthesis of 2-C-branched O-, S-glycosides and glycosyl azides via 1,2-cyclopropanated sugars. J Org Chem 2005; 70:4726-34. [PMID: 15932311 DOI: 10.1021/jo0502854] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Treatment of 2'-oxoalkyl 2-O-Ms(Ts)-alpha-C-mannosides (4, 5, and 6) with base resulted in 1,2-cyclopropanation via an intramolecular SN2 reaction due to their 1,2-trans-diaxial configurations. The 1,2-cyclopropanated sugars (10 and 13) were reacted with various alcohols, thiols, and sodium azide to produce 2-C-branched O- and S-glycosides and glycosyl azides (11, 14-28) in good to excellent yields. In contrast, 1,2-cis 2'-oxoalkyl 2-O-Ms(Ts)-alpha-C-glucoside 9 formed an acyclic conjugated aldehyde (31) under basic conditions, which occurred by 1'-enolation followed by beta-elimination. An intramolecular Michael addition from 31 produced 2-O-Ms-beta-C-glucoside 30 as a major product. However, due to the electron-withdrawing effect exerted by 2-O-Ms compound 31 also undergoes a C2 epimerization to form 32. Thereafter, the intramolecular Michael addition led to the formation of both 1,2-trans 2'-oxoalkyl 2-O-Ms-alpha-C-mannoside 4 and its beta-anomer (33). Because beta-elimination/Michael addition and C2 epimerization are reversible reactions, equilibriums among 9, 31, 30, 32, 33, and 4 were established, which included the transformation of 1,2-cis C-glucoside 9 into 1,2-trans C-mannoside 4. The subsequent 1,2-cyclopropanation of 4 was an irreversible reaction yielding 1,2-cyclopropanated 10 and further conversion to 1,2-migration products (11 and 12).
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Affiliation(s)
- Huawu Shao
- Institute for Biological Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada
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Cumpstey I, Carlsson S, Leffler H, Nilsson UJ. Synthesis of a phenyl thio-β-d-galactopyranoside library from 1,5-difluoro-2,4-dinitrobenzene: discovery of efficient and selective monosaccharide inhibitors of galectin-7. Org Biomol Chem 2005; 3:1922-32. [PMID: 15889175 DOI: 10.1039/b502354h] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The galectins are a family of [small beta]-galactoside-binding proteins that have been implicated in cancer and inflammation processes. Herein, we report the synthesis of a library of 28 compounds that was tested for binding to galectins-1, -3, -7, -8N and -9N. An aromatic nucleophilic substitution reaction between 1,5-difluoro-2,4-dinitrobenzene and a galacto thiol gave 5-fluoro-2,4-dinitrophenyl 2,3,4,6-tetra-O-acetyl-1-thio-beta-D-galactopyranoside. This versatile intermediate was then modified in a two dimensional manner: either by further substitution of the second fluoride by amines or thiols, or by reduction of the nitro groups and acylation of the resulting amines, or both. Deacetylation then gave a library of aromatic beta-galactosides that showed variable inhibitory activity against the different galectins, as shown by screening with a fluorescence-polarisation assay. Particularly efficient inhibitors were found against galectin-7, while less impressive enhancements of inhibitor affinity over methyl beta-D-galactopyranoside were found for galectin-1, -3, -8N and -9N. The best inhibitors against galectin-7 showed significantly higher affinity (K(d) as low as 140 microM) than both beta-methyl galactoside (K(d) 4.8 mM) and the unsubstituted beta-phenyl thiogalactoside (non-inhibitory). The best inhibitors against galectin-7 were poor against the other galectins and thus have potential as structurally simple and selective tools for dissecting biological functions of galectin-7.
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Affiliation(s)
- Ian Cumpstey
- Organic Chemistry, Lund University, Box 124, SE-221 00, Lund, Sweden
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Asanuma Y, Fujiwara SI, Shin-ike T, Kambe N. Selenoimidoylation of Alcohols with Selenium and Isocyanides and Its Application to the Synthesis of Selenium-Containing Heterocycles. J Org Chem 2004; 69:4845-8. [PMID: 15230614 DOI: 10.1021/jo0496704] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of alcohols with selenium and isocyanides in the presence of DBU gave oxyimidoylselenoates 6. Trapping of 6 with BuI resulted in high-yield formation of selenocarbonimidates 4. When alk-2-yn-1-ols 9 were allowed to react with selenium and isocyanides under similar conditions, new selenium-containing heterocycles 10, 2-imino-4-alkylidene-1,3-oxaselenolanes, were obtained via cycloaddition of oxyimidoylselenoates 13 generated in situ by intramolecular addition of selenolates to carbon-carbon triple bonds.
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Affiliation(s)
- Yoshiaki Asanuma
- Department of Molecular Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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