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Heskamp BM, Veeneman GH, van der Marel GA, van Boeckel CAA, van Boom JH. Synthesis of a SLex mimic: A potential E-selectin binding antagonist. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19951140905] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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2
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Orlova AV, Shpirt AM, Kulikova NY, Kononov LO. N,N-Diacetylsialyl chloride—a novel readily accessible sialyl donor in reactions with neutral and charged nucleophiles in the absence of a promoter. Carbohydr Res 2010; 345:721-30. [DOI: 10.1016/j.carres.2010.01.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Revised: 12/18/2009] [Accepted: 01/13/2010] [Indexed: 10/20/2022]
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3
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Sixta G, Hofinger A, Kosma P. Synthesis of spacer-containing chlamydial disaccharides as analogues of the alpha-Kdop-(2-->8)-alpha-Kdop-(2-->4)-alpha-Kdop trisaccharide epitope. Carbohydr Res 2006; 342:576-85. [PMID: 17007824 DOI: 10.1016/j.carres.2006.08.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Accepted: 08/01/2006] [Indexed: 10/24/2022]
Abstract
On the basis of high-resolution crystal structures of the antigen binding fragment of the chlamydia-specific monoclonal antibody S25-2 in complex with the trisaccharide alpha-Kdop-(2-->8)-alpha-Kdop-(2-->4)-alpha-Kdop and part structures thereof, seven modified alpha-Kdop-(2-->8)-alpha-Kdop disaccharide derivatives were synthesized starting from the protected disaccharide allyl ketoside 1. Hydroboration and subsequent oxidation as well as ozonolysis, respectively, followed by Wittig-reaction for chain elongation were used to install a terminal carboxylic group on spacer entities of various chain lengths. Furthermore, addition of methyl 2-thioacetate to the allyl group furnished the corresponding thioether derivative. Standard deprotection gave the target disaccharides as simplified trisaccharide analogues, which will be used to probe the contribution of the proximal carboxylic group in the binding of chlamydia-specific di- and trisaccharide-reactive monoclonal antibodies.
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Affiliation(s)
- Georg Sixta
- Department of Chemistry, University of Natural Resources and Applied Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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4
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Ikeda K, Fukuyo J, Sato K, Sato M. Preparation of 4-Pentenoic Acid Ester of Neu5Ac and 4-Pentenyl Glycoside of Neu5Ac and Their Application to Glycosylation. Chem Pharm Bull (Tokyo) 2005; 53:1490-3. [PMID: 16272740 DOI: 10.1248/cpb.53.1490] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Novel sialosyl donors, 4-pentenoic acid ester of N-acetylneuraminic acids (Neu5Ac) and 4-pentenyl glycoside of Neu5Ac were successfully prepared from the corresponding per-O-acetylated 2-hydroxy and 2-chloro derivatives of Neu5Ac, respectively and applied to the synthesis of O-sialosides.
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Affiliation(s)
- Kiyoshi Ikeda
- School of Pharmaceutical Sciences, University of Shizuoka, Japan.
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5
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Kaila N, Thomas BE. Design and synthesis of sialyl Lewis(x) mimics as E- and P-selectin inhibitors. Med Res Rev 2002; 22:566-601. [PMID: 12369089 DOI: 10.1002/med.10018] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The selectins are a family of cell-adhesion proteins that mediate the rolling of leukocytes on activated endothelial cells through the recognition of the carbohydrate epitope sialyl Lewis(x) (sLe(x)). Control of the leukocyte-endothelial cell adhesion process may prove useful in cases where excess recruitment of leukocytes can contribute to acute diseases such as stroke and reperfusion injury and chronic diseases such as psoriasis and rheumatoid arthritis. The development of molecules that block the interactions between sLe(x) and the selectins has become an active area of research. In this review, we will highlight the various approaches taken toward the development of sLe(x) mimetics as antagonists of E- and P-selectin, including the use of structural information about the selectins and their interactions with sLe(x) that have been revealed through the use of NMR, protein crystallography and molecular modeling.
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Affiliation(s)
- Neelu Kaila
- Department of Chemical Sciences and Biological Chemistry, WYETH, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, USA.
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6
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Affiliation(s)
- G J Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602
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7
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Gan Z, Roy R. Facile Preparation of Divalent Sialoside Derivatives by Olefin Metathesis Reaction. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(00)00034-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Hanessian S, Huynh HK, Reddy GV, McNaughton-Smith G, Ernst B, Kolb HC, Magnani J, Sweeley C. Exploration of beta-turn scaffolding motifs as components of sialyl Le(X) mimetics and their relevance to P-selectin. Bioorg Med Chem Lett 1998; 8:2803-8. [PMID: 9873626 DOI: 10.1016/s0960-894x(98)00500-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Monocyclic and bicyclic lactam units representing beta-turn surrogates were incorporated into a sialyl Le(X) structure by replacement of the natural sugar components. Low micromolar activity was found in a new P-selectin binding assay.
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Affiliation(s)
- S Hanessian
- Department of Chemistry, Université de Montréal, Centre-ville, Montréal, Québec, Canada
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9
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Simanek EE, McGarvey GJ, Jablonowski JA, Wong CH. Selectinminus signCarbohydrate Interactions: From Natural Ligands to Designed Mimics. Chem Rev 1998; 98:833-862. [PMID: 11848916 DOI: 10.1021/cr940226i] [Citation(s) in RCA: 375] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Eric E. Simanek
- Department of Chemistry, The Skaggs Institute for Chemical Biology and The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
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10
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Yarema KJ, Bertozzi CR. Chemical approaches to glycobiology and emerging carbohydrate-based therapeutic agents. Curr Opin Chem Biol 1998; 2:49-61. [PMID: 9667919 DOI: 10.1016/s1367-5931(98)80035-5] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The contributions of cell surface oligosaccharides to critical biological processes such as leukocyte-endothelial cell adhesion, bacterial and viral infection, and immunological recognition of tumor cells and foreign tissue are now understood in significant molecular detail. These discoveries at the forefront of biological research have motivated the design of synthetic glycoconjugates as tools for the fundamental study of glycobiology and as candidates for future generations of therapeutic and pharmaceutical reagents. During the past two years, significant progress has been made in the design and synthesis of carbohydrate-based inhibitors of selectins, receptors involved in the attachment of leukocytes to endothelial cells at sites of inflammation. Monomeric and multivalent oligosaccharides that bind to bacterial and viral receptors have been shown to abrogate infection by agents such as Helicobacter pilori, influenza virus and HIV. The identification of certain cell surface oligosaccharides as potent antigens has prompted their use in tumor vaccines, and inspired new approaches to the management of tissue rejection subsequent to xenotransplantation. To better understand how cell surface oligosaccharides function within their native context, novel chemical approaches to modulating cell surface oligosaccharides structures are now being developed. These stratergies for cell surface 'glycoform remodeling' promise to facilitate the investigation of carbohydrate mediated cell-cell interactions.
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Affiliation(s)
- K J Yarema
- Department of Chemistry, University of California, Material Sciences Division, Lawrence Berkeley National Laboratories, Berkeley, CA 94720, USA
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11
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Hanessian S, Reddy GV, Huynh HK, Pan J, Pedatella S, Ernst B, Kolb HC. Design and synthesis of sialyl Lex mimetics based on carbocyclic scaffolds derived from (−) quinic acid. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)10077-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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13
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Baisch G, Ohrlein R. Convenient chemoenzymatic synthesis of beta-purine-diphosphate sugars (GDP-fucose-analogues). Bioorg Med Chem 1997; 5:383-91. [PMID: 9061202 DOI: 10.1016/s0968-0896(96)00258-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A series of peracetylated beta-sugar-1-phosphates with L-fuco configuration are efficiently prepared chemically and coupled in high yields to purine monophosphate bases via imidazolide activation. The resulting purine diphosphate sugars are deacetylated completely by a mild treatment with commercial acetylesterase (EC 3.1.1.6) to give donor-substrates for fucosyl-transferases.
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Affiliation(s)
- G Baisch
- Central Research Laboratories CIBA AG, Basle, Switzerland
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14
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Baisch G, Öhrlein R. Chemo-enzymatische Synthese von Sialyl-Lewisx-Glycopeptiden. Angew Chem Int Ed Engl 1996. [DOI: 10.1002/ange.19961081617] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Prodger JC, Bamford MJ, Bird MI, Gore PM, Holmes DS, Priest R, Saez V. Mimics of the sialyl Lewis X tetrasaccharide. Replacement of the N-acetylglucosamine sugar with simple C2-symmetric 1,2-diols. Bioorg Med Chem 1996; 4:793-801. [PMID: 8818228 DOI: 10.1016/0968-0896(96)00055-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Analogues of sialyl Lewis X have been synthesized that feature replacement of the N-acetylglucosamine residue with C2-symmetric diols. The diols used contain different levels of torsional constraint and various functional groups. The cyclohexyl derived compound 27 was equipotent to sLex in vitro (IC50 0.5 mM).
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Affiliation(s)
- J C Prodger
- Department of Medicinal Chemistry, Glaxo Research and Development Ltd, Glaxo Wellcome Medicines Research Centre, Stevenage, Herts, UK
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16
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Dupré B, Bui H, Scott IL, Market RV, Keller KM, Beck PJ, Kogan TP. Glycomimetic selectin inhibitors: (α-D-mannopyranosyloxy)methylbiphenyls. Bioorg Med Chem Lett 1996. [DOI: 10.1016/0960-894x(96)00071-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Thoma G, Schwarzenbach F, Duthaler RO. Synthesis of a Sialyl Lewis x Mimic with Fixed Carboxylic Acid Group: Chemical Approach toward the Elucidation of the Bioactive Conformation of Sialyl Lewis x. J Org Chem 1996; 61:514-524. [PMID: 11666969 DOI: 10.1021/jo951067l] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The relation of the solution and bioactive conformation of sialyl Lewis x (sLe(x)) has been addressed by chemical means. To mimic the preferred solution conformation of sLe(x) 1, the more rigid analog 2 has been designed and synthesized. The sialic acid residue of 1 was replaced by a carboxylic acid function which is fixed in the equatorial position of a six membered ring acetal fused to galactose. Due to entropic considerations, an increased biological activity could be expected if the preferred solution conformation and bound form of sLe(x) were similar. Since mimic 2 was found to be inactive in an E-selectin binding assay, the bound form of sLe(x) most probably differs from the prevailing solution conformation.
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Affiliation(s)
- Gebhard Thoma
- Central Research Laboratories, CIBA, Postfach, CH-4002 Basel, Switzerland
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18
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Abstract
Selectins are central in the inflammatory response; the discovery that they bind to carbohydrate ligands has galvanized carbohydrate chemists to search for inhibitors of the process. Recent progress in identifying and analyzing physiological selectin counter-receptors suggests new approaches to the design of ligands that bind to specific selectins.
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Affiliation(s)
- C R Bertozzi
- Department of Chemistry, University of California, Berkeley 94720, USA
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Birkbeck AA, Ley SV, Prodger JC. Spiroketal glycomimetics: the synthesis of a conformationally restrained Sialyl Lewis X mimic. Bioorg Med Chem Lett 1995. [DOI: 10.1016/0960-894x(95)00469-a] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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