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Zhang J, Koyama T, Matsushita T, Hatano K, Matsuoka K. Preparation of lauryl thioglycoside of N-glycolylneuraminic acid (Neu5Gc) as a useful glycosyl donor for assembly of an oligosaccharide containing Neu5Gc. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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2
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Kloosterman M, de Wit D, van Boom JH, de Hey HT. Alternative synthesis and regioselective coupling of 1,6-anhydro-2-azido- and -2-phthalimido-2-deoxy-β-D-galactopyranose. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/recl.19861050707] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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3
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Imamura A, Ando H, Ishida H, Kiso M. Ganglioside GQ1b: efficient total synthesis and the expansion to synthetic derivatives to elucidate its biological roles. J Org Chem 2009; 74:3009-23. [PMID: 19296672 DOI: 10.1021/jo8027888] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The convergent total synthesis of ganglioside GQ1b based on the "cassette approach" between the nonreducing end GQ1b-core heptasaccharide and glucosylceramide building blocks was accomplished in high overall yield. The use of a sialylalpha(2-->8)sialylalpha(2-->3)galactose sequence as the key building block enhanced the efficiency of the glycan assembly and led to preparative-scale synthesis readily applicable for large-scale preparation. In addition, a judicious choice of p-methoxybenzyl protecting groups on glucosylceramide provided a solution to the previous synthetic problems, including a decrease in the yield of the deprotection steps, and led to elevation of the total yield. Furthermore, unnatural-type GQ1b derivatives were synthesized systematically in good yields by capitalizing on a similar approach in order to elucidate their biological roles.
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Affiliation(s)
- Akihiro Imamura
- Department of Applied Bioorganic Chemistry, Faculty of Applied Biological Sciences, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan.
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4
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Belén Cid M, Alfonso F, Alonso I, Martín-Lomas M. On the origin of the regioselectivity in glycosylation reactions of 1,2-diols. Org Biomol Chem 2009; 7:1471-81. [DOI: 10.1039/b819452a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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5
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Kulkarni SS, Gervay-Hague J. Two-step synthesis of the immunogenic bacterial glycolipid BbGL1. Org Lett 2008; 10:4739-42. [PMID: 18798644 DOI: 10.1021/ol801780c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chemical synthesis of a bacterial glycolipid BbGL1 is reported in two steps starting from per-O-TMS D-galactose. The key features are glycosyl iodide mediated beta-stereoselective glycosylation in the absence of neighboring group participation and regioselective acylation.
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Affiliation(s)
- Suvarn S Kulkarni
- University of California, Davis, Department of Chemistry, One Shields Avenue, Davis, California 95616, USA
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6
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Li X, Turánek J, Knötigová P, Kudláčková H, Mašek J, Pennington DB, Rankin SE, Knutson BL, Lehmler HJ. Synthesis and biocompatibility evaluation of fluorinated, single-tailed glucopyranoside surfactants. NEW J CHEM 2008. [DOI: 10.1039/b805015e] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Bongat AFG, Demchenko AV. Recent trends in the synthesis of O-glycosides of 2-amino-2-deoxysugars. Carbohydr Res 2007; 342:374-406. [PMID: 17125757 DOI: 10.1016/j.carres.2006.10.021] [Citation(s) in RCA: 169] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Revised: 10/13/2006] [Accepted: 10/20/2006] [Indexed: 11/23/2022]
Abstract
The discovery of new methods for stereoselective glycoside synthesis and convergent oligosaccharide assembly has been critical for the area of glycosciences. At the heart of this account is the discussion of the approaches for stereoselective synthesis of glycosides of 2-amino-2-deoxysugars that have emerged during the past two decades. The introductory part provides general background information and describes the key features and challenges for the synthesis of this class of compounds. Subsequently, major approaches to the synthesis of 2-amino-2-deoxyglycosides are categorized and discussed. Each subsection elaborates on the introduction (or protection) of the amino functionality, synthesis of glycosyl donors by introduction of a suitable leaving group, and glycosidation. Wherever applicable, the deprotection of a temporary amino group substituent and the conversion onto the natural acetamido functionality is described. The conclusions part evaluates the current standing in the field and provides a perspective for future developments.
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Affiliation(s)
- Aileen F G Bongat
- Department of Chemistry and Biochemistry, University of Missouri--St. Louis, One University Blvd., St. Louis, MO 63121, USA
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8
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Sun B, Pukin AV, Visser GM, Zuilhof H. An efficient glycosylation reaction for the synthesis of asialo GM2 analogues. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Malleron A, Hersant Y, Le Narvor C. Chemoenzymatic synthesis of the 3-sulfated Lewisa pentasaccharide. Carbohydr Res 2006; 341:29-34. [PMID: 16274756 DOI: 10.1016/j.carres.2005.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Accepted: 10/13/2005] [Indexed: 11/19/2022]
Abstract
The sulfated pentasaccharide benzyl O-(3-O-sulfo-beta-D-galactopyranosyl)-(1-->3)-O-[(alpha-L-fucopyranosyl)-(1-->4)]-O-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-(1-->3)-O-(beta-D-galactopyranosyl)-(1-->4)-O-beta-D-glucopyranoside sodium salt was synthesized using a chemo-enzymatic approach. Lacto-N-tetraose, obtained from two disaccharides [4-methoxybenzyl O-(2,3,4,6-tetra-O-acetyl-beta-D-galactopyranosyl)-(1-->3)-4,6-O-benzylidene-2-deoxy-2-phtalimido-beta-D-glucopyranoside and benzyl 2,6-di-O-acetyl-beta-D-galactopyranosyl-(1-->4)-2,3,6-tri-O-acetyl-beta-D-glucopyranoside], was regioselectively sulfated at the 3 OH position of the terminal galactose using the stannylene procedure. The fucosylation of the sulfated tetrasaccharide was performed using soluble or immobilized fucosyltransferase FucT-III to give the title compound.
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Affiliation(s)
- Annie Malleron
- Laboratoire de Chimie Organique Multifonctionnelle, UMR 8614, GDR 2590, Bât. 420, Université de Paris Sud, F-91405 Orsay, France
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10
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Abstract
Previous syntheses of ganglioside GM3 (NeuAc alpha3Gal beta4Glc beta1Cer) are reviewed, and both chemoenzymatic and chemical total synthetic approaches were investigated. In a chemoenzymatic approach, (2S,3R,4E)-5'''-acetyl-alpha-neuraminyl-(2''' --> 3'')-beta-galactopyranosyl-(1'' --> 4')-beta-glucopyranosyl-(1' <--> 1)-2-azido-4-octadecene-1,3-diol (azidoGM3) was readily prepared utilizing recombinant beta-Gal-(1'' --> 3'/4')-GlcNAc alpha-(2''' --> 3'')-sialyltransferase enzyme, and was evaluated as a synthetic intermediate to ganglioside GM3. The chemical total synthesis of ganglioside GM3 was performed on one of the largest scales yet reported. The highlights of this synthesis include minimizing the steps necessary to prepare the lactosyl acceptor as a useful anomeric mixture, which was present in excess for the highly regioselective and fairly stereoselective sialylation with a known neuraminyl donor to give the protected GM3 trisaccharide. The synthetic methodology maximized convergence by a subsequent glycosidic coupling of the well-characterized GM3 trisaccharide trichloroacetimidate derivative with protected ceramide. The ganglioside GM3 was nearly homogeneous as the two glycosidic couplings utilized preparative HLPC purifications, and variations in the sphingosine base and fatty acyl group were under 0.1 and 0.2%, respectively.
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Affiliation(s)
- R I Duclos
- Department of Biophysics, Boston University School of Medicine, MA 02118-2526, USA.
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11
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Perrin V, Fenet B, Praly JP, Lecroix F, Ta CD. Identification and synthesis of a trisaccharide produced from lactose by transgalactosylation. Carbohydr Res 2000; 325:202-10. [PMID: 10795811 DOI: 10.1016/s0008-6215(99)00309-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Enzymatic transgalactosylation of lactose by means of Streptococcus thermophilus, subspecies DN-001065, led to a mixture of D-galactose (approximately 4%), D-glucose (approximately 15%), lactose (approximately 51%), minor disaccharides (6%), trisaccharides (approximately 20%) and tetrasaccharides (3%). The major trisaccharide (approximately 16%) was identified by NMR spectroscopy and chemical synthesis as being the known beta-D-galactopyranosyl-(1-->3)-beta-D-galactopyranosyl-(1-->4)-D-glucos e (3'-beta-D-galactopyranosyl-lactose). It was purified from a mixture of peracetylated oligosaccharides by column chromatography followed by deacetylation. For the first time, 3'-beta-D-galactopyranosyl-lactose has been obtained on the 1 g scale, by resorting to simple techniques and equipment. NMR spectra have been unambiguously assigned.
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Affiliation(s)
- V Perrin
- Université Claude-Bernard Lyon I, Villeurbanne, France
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12
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Lubineau A, Alais J, Lemoine R. Synthesis of 3E- And 6E-Monosulfated and 3E,6E-Disulfated Lewis X Pentasaccharides, Candidate Ligands for Human L-Selectin. J Carbohydr Chem 2000. [DOI: 10.1080/07328300008544072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Takahashi T, Tsukamoto H, Yamada H. Syntheses of GM4 and GM3 Intermediates via Alkylation and Subsequent Intramolecular Glycosidation of 2-Alkoxy-2-phenylthioacetate. Org Lett 1999. [DOI: 10.1021/ol990245k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Takashi Takahashi
- Department of Chemical Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan
| | - Hirokazu Tsukamoto
- Department of Chemical Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan
| | - Haruo Yamada
- Department of Chemical Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan
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14
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Kitov PI, Railton C, Bundle DR. The synthesis of 16-mercaptohexadecanyl glycosides for biosensor applications. Carbohydr Res 1998; 307:361-9. [PMID: 9675372 DOI: 10.1016/s0008-6215(98)00053-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The Pk trisaccharide and the central disaccharide element of asialo GM1 activated as their trichloroacetimidates were each used to glycosylate 16-(p-toluensulfonyloxy) hexadecanol 1. Displacement of the tosyl group by thiocyanate followed by sodium borohydride reduction and saponification afforded oligosaccharide 16-mercaptohexadecanyl glycosides that were isolated as the corresponding disulfides 6 and 17 unless oxygen was rigorously excluded from the solvents used for work-up. Dithiothreitol reduction of disulfides and subsequent isolation under an inert atmosphere with degassed solvents gave the thiols 7 and 18. Chemisorption of omega-glycosyl alkanethiols and alkanethiols onto gold electrodes produces self-assembled monolayers that can act as amperometric biosensors for the detection of proteins that bind to the immobilized oligosaccharide epitope.
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Affiliation(s)
- P I Kitov
- Department of Chemistry, University of Alberta, Edmonton, Canada
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15
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Reddy GV, Jain RK, Locke RD, Matta KL. Synthesis of precursors for the dimeric 3-O-SO3Na Lewis X and Lewis A structures. Carbohydr Res 1996; 280:261-76. [PMID: 8593640 DOI: 10.1016/0008-6215(95)00319-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Stereoselective syntheses of 3-O-SO3Na-beta-Gal-(1-->4)-beta-GlcNAc- (1-->3)-beta-Gal-(1-->4)-GlcNAc-beta-OBn (15) and 3-O-SO3Na-beta-Gal-(1-->3)-beta-GlcNAc-(1-->3)-beta-Gal-(1-->3)- beta-GlcNAc-(1-->3)-beta-Gal-(1-->4)-Glc-beta-OBn (25) were accomplished through the use of two novel glycosyl donors, namely, ethyl O-(2,6-di-O-acetyl-3,4-O-isopropylidene-beta-D- galactopyranosyl)-(1-->4)-3-O-acetyl-2-deoxy-2-phthalimido-1-thio-6-O- trimethylacetyl-beta-D-glucopyranoside (8). and ethyl O-(2,6-di-O-acetyl-3,4-O-isopropylidene-beta-D-galactopyranosyl)- (1-->3)-4-O-acetyl-2-deoxy-2-phthalimido-1-thio-6-O-trimethylace tyl-beta-D-glucopyranoside (18).
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Affiliation(s)
- G V Reddy
- Department of Gynecologic Oncology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA
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16
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Dasgupta F, Anderson L. Efficient preparation of allyl 2,3,6,2',3',6'-hexa-O-benzyl-beta-lactoside and its use as a glycosyl acceptor for chain extension at O-4'. Carbohydr Res 1994; 264:155-60. [PMID: 8001017 DOI: 10.1016/0008-6215(94)00189-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- F Dasgupta
- Department of Biochemistry, College of Agricultural and Life Sciences, University of Wisconsin, Madison 53706
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17
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Caro HN, Martín-Lomas M, Bernabé M. Syntheses and insulin-like activity of phosphorylated galactose derivatives. Carbohydr Res 1993; 240:119-31. [PMID: 8458006 DOI: 10.1016/0008-6215(93)84177-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The syntheses of the poly-phosphorylated galactosides 6, 8, 10, 13, 16, and 20, isolated as sodium salts, have been performed. The non-phosphorylated disaccharide 17 and trisaccharide 21 have been prepared via glycosylation of the 2-(trimethylsilyl)ethyl galactosides 3 and 2, respectively, and subsequent complete deprotection. Preliminary insulin-like activity of the phosphorylated derivatives is reported.
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Affiliation(s)
- H N Caro
- Grupo de Carbohidratos, Instituto de Química Orgánica General, C.S.I.C., Madrid, Spain
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18
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Efficient syntheses of 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β- and -α-d-galactopyranosyl chloride. Carbohydr Res 1990. [DOI: 10.1016/0008-6215(90)80107-e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Khan SH, Abbas SA, Matta KL. Synthesis of 4-nitrophenyl O-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)- (1----2)-O-(4-O-methyl-alpha-D-mannopyranosyl)-(1----6)-beta-D-glucopyr anoside. A potential specific acceptor-substrate for N-acetylglucosaminyltransferase-V (GnT V). Carbohydr Res 1990; 205:385-97. [PMID: 2148907 DOI: 10.1016/0008-6215(90)80156-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- S H Khan
- Department of Gynecologic Oncology, Roswell Park Memorial Institute, New York State Department of Health, Buffalo 14263
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20
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Kallin E, Lönn H, Norberg T. Synthesis ofp-TrifluoroacetamidophenylethylO-(2-Acetamido-2-Deoxy-β-D-Galactopyranosyl)-(1→4)-O-β-D- Galactopyanosyl-(1→4)-O-β-D-Glucopyranoside, Containing the Trisaccharide Portion of the Asialo-GM2 Glycolipid. J Carbohydr Chem 1990. [DOI: 10.1080/07328309008543866] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Koto S, Morishima N, Takenaka K, Kanemitsu K, Shimoura N, Kase M, Kojiro S, Nakamura T, Kawase T, Zen S. 2-Methoxyethyl Group for Protection of Reducing Hydroxyl Group of Aldose. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1989. [DOI: 10.1246/bcsj.62.3549] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Sato S, Ito Y, Ogawa T. A total synthesis of dimeric Lex antigen, III3V3Fuc2nLc6Cer: Pivaloyl auxiliary for stereocontrolled glycosylation. Tetrahedron Lett 1988. [DOI: 10.1016/s0040-4039(00)80733-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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23
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Cannella MS, Acher AJ, Ledeen RW. Stimulation of neurite outgrowth in vitro by a glycero-ganglioside. Int J Dev Neurosci 1988; 6:319-26. [PMID: 3188972 DOI: 10.1016/0736-5748(88)90015-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
A glycerol-containing analog of ganglioside, with sialic acid attached to a diglyceride-like structure possessing two ether-linked alkyl chains, was prepared synthetically and applied exogenously to three culture systems; neuro-2A neuroblastoma cells, PC12 cells and dorsal root ganglia. This resulted in pronounced stimulation of neurite outgrowth in all three, demonstrating that sialo-lipids(s) lacking ceramide and possessing sialic acid as the sole carbohydrate are able to promote neuritogenesis in approximately the same manner as naturally occurring gangliosides.
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Affiliation(s)
- M S Cannella
- Department of Neurology, Albert Einstein College of Medicine, Bronx, NY 10461
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24
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The regioselectivity of dibutylstannylene-mediated oxidation of methyl 3',4'-O-isopropylidene-α- and β-lactoside. A new synthesis of n -acetylllactosamine. Tetrahedron 1988. [DOI: 10.1016/s0040-4020(01)86192-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Total synthesis of a stage specific embryonic antigen-1 (SSEA-1) a glycoheptaosyl ceramide V3FucnLc6Cer. Tetrahedron Lett 1988. [DOI: 10.1016/s0040-4039(00)80600-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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A total synthesis of a stage specific embryonic antigen-3 (SSEA-3), globopentaosyl ceramide, IV3GalGb4Cer. Use of 2,4,6-trimethylbenzoyl group as a stereocontrolling auxiliary. Tetrahedron Lett 1988. [DOI: 10.1016/s0040-4039(00)80845-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Paulsen H, Steiger KM. Regioselektive glycosylierung an stellungen 3′ und 4′ von lactose-derivaten. Carbohydr Res 1987. [DOI: 10.1016/0008-6215(87)80245-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Sato S, Ito Y, Nukada T, Nakahara Y, Ogawa T. Total synthesis of X hapten, III3 Fuc alpha-nLc4 Cer. Carbohydr Res 1987; 167:197-210. [PMID: 2891443 DOI: 10.1016/0008-6215(87)80279-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Total synthesis of O-beta-D-galactopyranosyl-(1----4)-O-[alpha-L- fucopyranosyl- (1----3)]-O-(2-acetamido-2-deoxy-beta-D-glucopyranosyl)-(1----3)-O-beta- D- galactopyranosyl- (1----4)-O-beta-D-glucopyranosyl-(1----1)-2-N-tetracosanoyl-(2S,3R ,4E)- sphingenine was achieved by use of the key glycosyl donors O-(2,3,4,6-tetra-O-acetyl-beta-D- galactopyranosyl)-(1----4)-O-[(2,3,4-tri-O-acetyl-alpha-L-fucopyranosyl) - (1----3)]-O-(2- acetamido-6-O-acetyl-2-deoxy-beta-D-glucopyranosyl)-(1----3)-O-(2,4,6-tr i-O- acetyl- beta-D-galactopyranosyl)-(1----4)-2,3,6-tri-O-acetyl-alpha-D-glucopyrano syl trichloroacetimidate and fluoride, as well as key glycosyl acceptor 3-O-benzoyl-2-N-tetracosanoyl- (2S,3R,4E)-sphingenine, in an unambiguous manner.
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Affiliation(s)
- S Sato
- RIKEN Institute of Physical and Chemical Research, Saitama, Japan
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29
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Koike K, Sugimoto M, Sato S, Ito Y, Nakahara Y, Ogawa T. Total synthesis of globotriaosyl-E and Z-ceramides and isoglobotriaosyl-E-ceramide. Carbohydr Res 1987; 163:189-208. [PMID: 3621236 DOI: 10.1016/0008-6215(87)80181-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Stereoselective, total synthesis of O-alpha-D-galactopyranosyl-(1----4) -O-beta-D-galactopyranosyl-(1----4)-O-beta-D-glucopyranosyl-(1----1)-N -tetracosanoyl-[2S,3R,4E (and 4Z)]-sphingenine and O-alpha-D -galactopyranosyl-(1----3)-O-beta-D-galactopyranosyl-(1----4)-O-beta-D -glucopyranosyl-(1----1)-N-tetracosanoyl-(2S,3R,4E)-sphin gen ine was achieved by using O-(2,3,4,6-tetra-O-acetyl-alpha-D-galactopyranosyl) -(1----4)-O-(2,3,6-tri-O-acetyl-beta-D-galactopyranosyl)-(1----4)-2,3,6- tri-O-acetyl-alpha-D-glucopyranosyl trichloroacetimidate, O-(2,3,4,6-tetra-O-acetyl-alpha-D-galactopyranosyl) -(1----4)-O-(2,3,6-tri-O-acetyl-beta-D-galactopyranosyl)-(1----4)-2,3,6- tri-O-acetyl-alpha (and beta)-D-glucopyranosyl fluoride, and O-(2,3,4,6-tetra-O-acetyl-alpha-D -galactopyranosyl)-(1----3)-O-(2,3,6-tri-O-acetyl-beta-D-galactopyran osyl)-(1----4)-2,3,6-tri-O-acetyl-alpha-D-glucopyranosyl trichloroacetimidate.
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30
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31
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Perdomo GR, Krepinsky JJ. A glycosylation reaction: Conversion of methyl glicosides to glycosyl chlorides by boron trichloride. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(00)96789-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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