1
|
Rasool JU, Kumar A, Ali A, Ahmed QN. Triethylamine-methanol mediated selective removal of oxophenylacetyl ester in saccharides. Org Biomol Chem 2021; 19:338-347. [PMID: 33300928 DOI: 10.1039/d0ob02192j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly selective, mild, and efficient method for the cleavage of oxophenylacetyl ester protected saccharides was developed using triethylamine in methanol at room temperature. The reagent proved successful against different labile groups like acetal, ketal, and PMB and also generated good yields of the desired saccharides bearing lipid esters. Further, we also observed DBU in methanol as an alternative reagent for the deprotection of acetyl, benzoyl, and oxophenylacetyl ester groups.
Collapse
Affiliation(s)
- Javeed Ur Rasool
- Medicinal Chemistry Division, Council of Scientific and Industrial Research-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001 India and Academy of scientific and innovative research, Council of Scientific and Industrial Research-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001, India.
| | - Atul Kumar
- Medicinal Chemistry Division, Council of Scientific and Industrial Research-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001 India and Academy of scientific and innovative research, Council of Scientific and Industrial Research-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001, India. and Department of Chemistry and Chemical Sciences, Central University of Jammu, Rahya-Suchani (Bagla), District Samba, Jammu-180001, India
| | - Asif Ali
- CSIR-Traditional Knowledge Digital Library (TKDL), 14-Satsang Vihar, Vigyan Suchna Bhawan, New Delhi-110067, India
| | - Qazi Naveed Ahmed
- Medicinal Chemistry Division, Council of Scientific and Industrial Research-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001 India and Academy of scientific and innovative research, Council of Scientific and Industrial Research-Indian Institute of Integrative Medicine (CSIR-IIIM), Jammu-180001, India.
| |
Collapse
|
2
|
Yan YL, Guo JR, Liang CF. Sequential Dy(OTf) 3 -Catalyzed Solvent-Free Per-O-Acetylation and Regioselective Anomeric De-O-Acetylation of Carbohydrates. Chem Asian J 2017; 12:2471-2479. [PMID: 28688169 DOI: 10.1002/asia.201700867] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/04/2017] [Indexed: 11/06/2022]
Abstract
Dysprosium(III) trifluoromethanesulfonate-catalyzed per-O-acetylation and regioselective anomeric de-O-acetylation of carbohydrates can be tuned by adjusting the reaction medium. In this study, the per-O-acetylation of unprotected sugars by using a near-stoichiometric amount of acetic anhydride under solvent-free conditions resulted in the exclusive formation of acetylated saccharides as anomeric mixtures, whereas anomeric de-O-acetylation in methanol resulted in a moderate-to-excellent yield. Reactions with various unprotected monosaccharides or disaccharides followed by a semi-one-pot sequential conversion into the corresponding acetylated glycosyl hemiacetal also resulted in high yields. Furthermore, the obtained hemiacetals could be successfully transformed into trichloroimidates after Dy(OTf)3 -catalyzed glycosylation.
Collapse
Affiliation(s)
- Yi-Ling Yan
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City, 402, Taiwan
| | - Jiun-Rung Guo
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City, 402, Taiwan
| | - Chien-Fu Liang
- Department of Chemistry, National Chung Hsing University, 145 Xingda Rd., South Dist., Taichung City, 402, Taiwan
| |
Collapse
|
3
|
Andersen SM, Heuckendorff M, Jensen HH. 3-(Dimethylamino)-1-propylamine: A Cheap and Versatile Reagent for Removal of Byproducts in Carbohydrate Chemistry. Org Lett 2015; 17:944-7. [DOI: 10.1021/acs.orglett.5b00041] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sofie Meng Andersen
- Department
of Chemistry, Aarhus University, Langelandsgade 140, DK-8000, Aarhus C, Denmark
| | - Mads Heuckendorff
- Department
of Chemistry, Aarhus University, Langelandsgade 140, DK-8000, Aarhus C, Denmark
| | - Henrik H. Jensen
- Department
of Chemistry, Aarhus University, Langelandsgade 140, DK-8000, Aarhus C, Denmark
| |
Collapse
|
4
|
Hirohara S, Sharyo K, Kawasaki Y, Totani M, Tomotsuka A, Funasako R, Yasui N, Hasegawa Y, Yuasa J, Nakashima T, Kawai T, Oka C, Kawaichi M, Obata M, Tanihara M. trans-Bisglycoconjugation is an Efficient and Robust Architecture for PDT Photosensitizers Based on 5,10,15,20-Tetrakis(pentafluorophenyl)porphyrin Derivatives. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20130131] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shiho Hirohara
- Department of Chemical and Biological Engineering, Ube National College of Technology
| | - Kohei Sharyo
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Yuji Kawasaki
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Masayasu Totani
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Ayumi Tomotsuka
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Ryota Funasako
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Nobutaka Yasui
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Yasuchika Hasegawa
- Division of Materials Chemistry, Faculty and Graduate School of Engineering, Hokkaido University
| | - Junpei Yuasa
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Takuya Nakashima
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Tsuyoshi Kawai
- Graduate School of Materials Science, Nara Institute of Science and Technology
| | - Chio Oka
- Graduate School of Biological Sciences, Nara Institute of Science and Technology
| | - Masashi Kawaichi
- Graduate School of Biological Sciences, Nara Institute of Science and Technology
| | - Makoto Obata
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
| | - Masao Tanihara
- Graduate School of Materials Science, Nara Institute of Science and Technology
| |
Collapse
|
5
|
Tomkiel AM, Brzezinski K, Łotowski Z, Siergiejczyk L, Wałejko P, Witkowski S, Kowalski J, Płoszyńska J, Sobkowiak A, Morzycki JW. Electrochemical synthesis of glycoconjugates of 3β-hydroxy-Δ5-steroids by using non-activated sugars and steroidal thioethers. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.07.106] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Morzycki JW, Łotowski Z, Siergiejczyk L, Wałejko P, Witkowski S, Kowalski J, Płoszyńska J, Sobkowiak A. A selective electrochemical method of glycosylation of 3beta-hydroxy-Delta 5-steroids. Carbohydr Res 2010; 345:1051-5. [PMID: 20371036 DOI: 10.1016/j.carres.2010.03.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 03/09/2010] [Accepted: 03/16/2010] [Indexed: 11/17/2022]
Abstract
A new electrochemical glycosylation method is presented. According to the method cholesterol and other 3beta-hydroxy-Delta(5)-steroids can be selectively transformed to glycosides using non-activated sugars. The method is also useful for the synthesis of glycoconjugates with sugar linked to a steroid moiety by an ether bond.
Collapse
Affiliation(s)
- Jacek W Morzycki
- Institute of Chemistry, University of Białystok, Piłsudskiego 11/4, 15-443 Białystok, Poland.
| | | | | | | | | | | | | | | |
Collapse
|
7
|
Tasca JE, Ponzinibbio A, Diaz G, Bravo RD, Lavat A, González MG. CuFe2O4 Nanoparticles: A Magnetically Recoverable Catalyst for Selective Deacetylation of Carbohydrate Derivatives. Top Catal 2010. [DOI: 10.1007/s11244-010-9538-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Tran AT, Deydier S, Bonnaffé D, Le Narvor C. Regioselective green anomeric deacetylation catalyzed by lanthanide triflates. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.01.106] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
9
|
|
10
|
Smiataczowa K, Kosmalski J, Nowacki A, Czaja M, Warnke Z. Proton-acceptor properties and capability for mutarotation of some glucosylamines in methanol. Carbohydr Res 2005; 339:1439-45. [PMID: 15178385 DOI: 10.1016/j.carres.2004.02.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2003] [Revised: 02/09/2004] [Accepted: 02/26/2004] [Indexed: 11/24/2022]
Abstract
N-(m-Nitrophenyl)-beta-D-glucopyranosylamine (Gln), N-(N-methylphenyl)-beta-D-glucopyranosylamine (Glm), N-beta-D-glucopyranosylpyrazole (Glp), and N-beta-D-glucopyranosylimidazole (Gli) have been synthesized. Their basicity constants, pKb, determined in methanol were, respectively, 14.99, 14.36, 15.04, and 9.74. The derivatives of secondary amines (Glm, Glp, and Gli) did not mutarotate in methanol in the presence of 3,5-dinitrobenzoic acid and hydrochloric acid. The heats of formation and entropies were calculated by the AM1 and PM3 methods for the glucosylamines and their cations under consideration of two plausible protonation centers. Thermodynamic parameters for the proton transfer in the reaction: glucosylamine + CH3OH2+ = glucosylamineH+ + CH3OH were determined and the protonation center in the glucosylamine molecule was identified. The mechanism of mutarotation of the glucosylamines is discussed and the conclusion made that formation of an acyclic immonium cation is not a satisfactory condition for the reaction to proceed.
Collapse
Affiliation(s)
- Kazimiera Smiataczowa
- Faculty of Chemistry, University of Gdansk, Sobieskiego 18, PL-80-952 Gdansk, Poland
| | | | | | | | | |
Collapse
|
11
|
Kovensky J, Duchaussoy P, Bono F, Salmivirta M, Sizun P, Herbert JM, Petitou M, Sinaÿ P. A synthetic heparan sulfate pentasaccharide, exclusively containing L-iduronic acid, displays higher affinity for FGF-2 than its D-glucuronic acid-containing isomers. Bioorg Med Chem 1999; 7:1567-80. [PMID: 10482449 DOI: 10.1016/s0968-0896(99)00106-6] [Citation(s) in RCA: 39] [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
It has been suggested that the FGF-2 binding site on heparan sulfate chains is a trisulfated pentasaccharide containing three hexuronic acid units. The configuration at C-5 of two of them being undetermined, we have synthesized the four possible pentasaccharides, and have evaluated their FGF-2 binding affinity through in vitro biological assays. The pentasaccharide containing L-iduronic acid as the sole hexuronic acid showed higher affinity for FGF-2 than the other pentasaccharides, where one hexuronic acid unit at least is D-glucuronic acid.
Collapse
Affiliation(s)
- J Kovensky
- Ecole Normale Supérieure, Département de Chimie, Associé au CNRS, Paris, France
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Petitou M, Driguez PA, Duchaussoy P, Hérault JP, Lormeau JC, Herbert JM. Synthetic oligosaccharides having various functional domains: potent and potentially safe heparin mimetics. Bioorg Med Chem Lett 1999; 9:1161-6. [PMID: 10328305 DOI: 10.1016/s0960-894x(99)00156-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthetic heptadecasaccharide, comprising an antithrombin III binding domain, a thrombin binding domain, and a neutral methylated hexasaccharide sequence, was obtained through a convergent synthesis. This compound displayed in vitro anticoagulant properties similar to that of standard heparin but, in contrast with heparin, escaped neutralization by platelet factor 4, a protein released by activated platelets.
Collapse
Affiliation(s)
- M Petitou
- Sanofi Recherche, Haemobiology Research Department, Toulouse, France
| | | | | | | | | | | |
Collapse
|
13
|
Salinas AE. The reaction of penta-O-benzoyl-d-glucopyranose with piperidine: characterization of the products isolated and study of the reaction mechanism. Carbohydr Res 1999. [DOI: 10.1016/s0008-6215(99)00029-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Abstract
Tricolorin A (1) is a novel tetrasaccharide macrolactone that is a natural herbicide. In this paper is reported a total synthesis of 1. Coupling of hydroxy ester 18 with D-fucosyl trichloroacetimidate 23 gave fucoside 24. Removal of the C-2 pivaloyl group of 24 followed by coupling with D-glucosyl trichloroacetimidate 29 resulted in isolation of disaccharide 30. Saponification of the ester groups of 30 and subsequent selective macrolactonization of the acid diol 31 by the Yonemitsu protocol gave only the desired lactone 32. The key step in the assembly of disaccharide glycosyl trichloroacetimidate 52 was coupling L-rhamnoside 47 with L-rhamnosyl trichloroacetimidate 43. Attempts to couple lactone disaccharide 32 with disaccharide 52 were unsuccessful. Using an alternate plan for assembly of the tetrasaccharide, reaction of disaccharide glycosyl trichloroacetimidate 58 with disaccharide 37 gave tetrasaccharide 59. Diester lactone 63 was generated by selective macrolactonization of tetrasaccharide acid triol 60, again using the Yonemitsu protocol, followed by addition of the chiral side chain acid to the reaction vessel. Synthetic tricolorin A (1) was obtained by deprotection of 63. Starting from fucose, glucose, rhamnose, and (S)-1-octyn-3-ol, the synthesis required 39 steps overall. The longest linear sequence was 14 steps, with an overall yield for this longest linear sequence of 6%.
Collapse
Affiliation(s)
- Daniel P. Larson
- Department of Chemistry, University of California, Berkeley, California 94720
| | | |
Collapse
|
15
|
Larson DP, Heathcock CH. Synthesis of the Macrolactone Disaccharide Subunit of Tricolorin A. J Org Chem 1996. [DOI: 10.1021/jo960655b] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel P. Larson
- Department of Chemistry, University of California, Berkeley, California 94720
| | | |
Collapse
|
16
|
Blatter G, Jacquinet JC. The use of 2-deoxy-2-trichloroacetamido-D-glucopyranose derivatives in syntheses of hyaluronic acid-related tetra-, hexa-, and octa-saccharides having a methyl beta-D-glucopyranosiduronic acid at the reducing end. Carbohydr Res 1996; 288:109-25. [PMID: 8765729 DOI: 10.1016/s0008-6215(96)90785-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Expeditious and stereocontrolled syntheses are reported of beta-D-Glc pNAc-(1-->4)-[beta-D-Glc pA-(1-->3)-beta-D-Glc pNAc-(1-->4)]n-beta-D-Glc pA-(1-->OMe), where n = 1, 2, and 3, which represent structural elements of the extracellular polysaccharide hyaluronic acid. Condensation of 4,6-O-benzylidene-3-O-chloroacetyl-2-deoxy-2-trichloroacetamido- alpha-D-glucopyranosyl trichloroacetimidate with methyl (4-methoxyphenyl 2,3-di-O-benzoyl-beta-D-glucopyranosid)uronate gave the disaccharide derivative 9, which was demethoxyphenylated and imidoylated to afford the pivotal disaccharide trichloroacetimidate 7. Condensation of 7 with methanol followed by O-dechloroacetylation gave the acceptor 8. Coupling of 7 with 8 gave the tetrasaccharide derivative 4. O-Dechloroacetylation of 4 followed by condensation with imidate 7 afforded hexasaccharide 5, which was transformed into octasaccharide 6 by a similar two-step procedure. Subsequent O-dechloroacetylation, transformation of the N-trichloroacetyl groups into N-acetyl, debenzylidenation, and saponification of 4-6 afforded the tetra- (1), hexa- (2), and octa-saccharide (3) derivatives in high yields, as their sodium salts.
Collapse
Affiliation(s)
- G Blatter
- Institut de Chimie Organique et Analytique, U.R.A. 499, Faculté des Sciences, Université d'Orléans, France
| | | |
Collapse
|
17
|
Leteux C, Veyrières A. Synthesis of α-C-glycopyranosides ofD-galactosamine andD-glucosamine via iodocyclization of corresponding glycals and silver tetrafluoroboranuidepromoted alkynylation at the anomeric centre. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/p19940002647] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
18
|
Plewe M, Sandhoff K, Schmidt RR. Synthesis of a 4-Deoxy-4-C-Methylene Analog of Glucosylceramide. J Carbohydr Chem 1992. [DOI: 10.1080/07328309208018276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
19
|
Stereospecific 1,2-ethyl(phenyl)thio group migration in sugars: stereocontrolled synthesis of precursors to α- and β-2-deoxyglycosides. Tetrahedron Lett 1992. [DOI: 10.1016/0040-4039(92)88142-r] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
20
|
Tailler D, Jacquinet JC, Noirot AM, Beau JM. An expeditious and stereocontrolled preparation of 2-azido-2-deoxy-β-D-glucopyranose derivatives fromD-glucal. ACTA ACUST UNITED AC 1992. [DOI: 10.1039/p19920003163] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
21
|
Wotovic A, Jacquinet JC, Sinaÿ P. Synthesis of oligosaccharins: a chemical synthesis of propyl O-beta-D-galactopyranosyl-(1----2)-O-alpha-D-xylopyranosyl-(1----6)- O-beta-D-glucopyranosyl-(1----4)-beta-D-glucopyranoside. Carbohydr Res 1990; 205:235-45. [PMID: 2276137 DOI: 10.1016/0008-6215(90)80143-q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Condensation of allyl 3,4-di-O-benzyl-beta-D-xylopyranoside with 2-O-acetyl-3,4,6-tri-O-benzyl-alpha-D-galactopyranosyl chloride in dichloromethane in the presence of silver triflate gave allyl 2-O-(2-O-acetyl-3,4-6-tri-O-benzyl-beta-D-galactopyranosyl)-3,4-di-O benzyl-beta-D-xylopyranoside (7, 83%). Compound 7 was converted in five steps into 2-O-(2-O-acetyl-3,4-6-tri-O-benzyl-beta-D-xylopyranosyl bromide (13), which was condensed immediately with allyl 2,3,6-tri-O-acetyl-4-O-(2,3,di-O-acetyl-beta-D-glucopyranosyl)-beta-D- glucopyranoside to give crystalline allyl O-(2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-galactopyranosyl)- (1----2)-O-(3,4,-di-O-benzyl-alpha-D-xylopyranosyl)-(1----6)-O-(2,3,-di- O-acetyl-beta-D-glucopyranosyl)-(1----4)-2,3,6-tri-O-acetyl-beta-D-gluco pyranoside (23, 50%). O-Deacylation of 23 followed by catalytic hydrogenolysis gave the title glycoside.
Collapse
Affiliation(s)
- A Wotovic
- Laboratoire de Biochimie Structurale, U.R.A. 499, U.F.R.-Faculté des Sciences, Université d'Orléans, France
| | | | | |
Collapse
|
22
|
Jacquinet JC. Syntheses of the methyl glycosides of the repeating units of chondroitin 4- and 6-sulfate. Carbohydr Res 1990; 199:153-81. [PMID: 2114948 DOI: 10.1016/0008-6215(90)84259-w] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
3,4,6-Tri-O-acetyl-D-galactal was transformed into methyl 6-O-acetyl-2-azido-4-O-benzyl-2-deoxy-beta-D-galactopyranoside and its 4-O-acetyl-6-O-benzyl analogue, each of which was glycosylated with activated, O-acetylated derivatives of methyl D-glucopyranosyluronate. The resulting beta-(1----3)-linked disaccharide derivatives were each reductively N-acetylated, hydrogenolysed, O-sulfated, and saponified to afford the disodium salts of methyl 2-acetamido-2-deoxy-3-O-(beta-D-glucopyranosyluronic acid)-4-O-sulfo-beta-D-galactopyranoside and the 6-O-sulfo analogue. D-Galactal was also transformed into activated derivatives of 2-azido-3,6-di-O-benzyl-2-deoxy-D-galactopyranose and their 3,4-di-O-benzyl analogues with various substituents at O-4 and O-6. These glycosyl donors were condensed with 6-O-protected derivatives of methyl 2,3-di-O-benzyl-beta-D-glucopyranoside to give the beta-(1----4)-linked disaccharide derivatives, which were selectively deprotected, then oxidised at C-6 of the gluco unit, reductively N-acetylated, selectively deprotected, O-sulfated at C-4 or C-6 of the galacto unit, and hydrogenolysed to give the disodium salts of methyl 4-O-(2-acetamido-2-deoxy-4-O-sulfo-beta-D-galactopyranosyl)-beta-D- glucopyranosiduronic acid and the 6-O-sulfo analogue.
Collapse
Affiliation(s)
- J C Jacquinet
- Laboratoire de Biochimie Structurale, U.R.A. 499, U.F.R. Faculté des Sciences, Université d'Orléans, France
| |
Collapse
|
23
|
Pozsgay V, Jennings HJ. Synthesis of Glycosyl Esters and Glycosyl Hemiacetals From Methylthioglycosides. J Carbohydr Chem 1990. [DOI: 10.1080/07328309008543836] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
24
|
Trumtel M, Tavecchia P, Veyrières A, Sinaÿ P. The synthesis of 2′-deoxy-β-disaccharides: Novel approaches. Carbohydr Res 1989. [DOI: 10.1016/0008-6215(89)85044-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
25
|
Francotte E, Rihs G. Enantioselective inclusion complexation of 2,3,4,6-tetra-O-acetyl-D-glycopyranose as a chiral host with (+)-(r)-phenylethylamine: x-ray characterization of the complex. Chirality 1989. [DOI: 10.1002/chir.530010114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
26
|
Ichikawa Y, Monden R, Kuzuhara H. Synthesis of methyl glycoside derivatives of tri- and penta-saccharides related to the antithrombin III-binding sequence of heparin, employing cellobiose as a key starting-material. Carbohydr Res 1988; 172:37-64. [PMID: 3349502 DOI: 10.1016/s0008-6215(00)90842-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Two key synthons for the title pentasaccharide derivative, methyl O-(methyl 2-O-benzoyl-3-O-benzyl-alpha-L-idopyranosyluronate)-(1----4)-6-O-acetyl- 2-azido - 3-O- benzyl-2-deoxy-beta-D-glucopyranoside and O-(methyl 2,3-di-O-benzyl-4-O- chloroacetyl-beta-D-glucopyranosyluronate)-(1----4)-3,6-di-O-acetyl-2-az ido-2- deoxy-alpha-D- glucopyranosyl bromide, were prepared from a common starting material, cellobiose. They were coupled to give a tetrasaccharide derivative that underwent O-dechloroacetylation to the corresponding glycosyl acceptor. Its condensation with the known 6-O-acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-alpha-D-glucopyranosyl bromide afforded a 77% yield of suitably protected pentasaccharide, methyl O-(6-O- acetyl-2-azido-3,4-di-O-benzyl-2-deoxy-alpha-D-glucopyranosyl)-(1----4)- O- (methyl 2,3- di-O-benzyl-beta-D-glucopyranosyluronate)-(1----4)-O-(3,6-di-O-acetyl-2- azido-2 - deoxy-alpha-D-glucopyranosyl)-(1----4)-O-(methyl 2-O-benzoyl-3-O-benzyl-alpha-L- idopyranosyluronate)- (1----4)-6-O-acetyl-2-azido-3-O-benzyl-2-deoxy-beta-D-glucopyranoside. Sequential deprotection and sulfation gave the decasodium salt of methyl O-(2- deoxy-2-sulfamido-6-O-sulfo-alpha-D-glucopyranosyl)-(1----4)-O-(be ta-D- glucopyranosyl-uronic acid)-(1----4)-O-(2-deoxy-2-sulfamido-3,6-di-O-sulfo-alpha-D-gluco pyranosyl)- (1----4)-O-(2-O-sulfo-alpha-L-idopyranosyluronic acid)-(1----4)-2-deoxy-2- sulfamido-6-O- sulfo-beta-D-glucopyranoside (3). In a similar way, the trisaccharide derivative, the hexasodium salt of methyl O-(2-deoxy-2-sulfamido-6-O-sulfo-alpha-D- glucopyranosyl)- (1----4)-O-(beta-D-glucopyranosyluronic acid)-(1----4)-2-deoxy-2-sulfamido-3,6- di-O- sulfo-alpha-D-glucopyranoside (4) was synthesized from methyl O-(6-O-acetyl-2- azido- 3,4-di-O-benzyl-2-deoxy-alpha-D-glucopyranosyl)-(1----4)-O-(methyl 2,3-di-O- benzyl-beta- D-glucopyranosyluronate)-3,6-di-O-acetyl-2-azido-2-deoxy-alpha-D- glucopyranoside. The pentasaccharide 3 binds strongly to antithrombin III with an association constant almost equivalent to that of high-affinity heparin, but the trisaccharide 4 appears not to bind.
Collapse
Affiliation(s)
- Y Ichikawa
- RIKEN The Institute of Physical and Chemical Research, Saitama, Japan
| | | | | |
Collapse
|
27
|
Nudelman A, Herzig J, Gottlieb HE, Keinan E, Sterling J. Selective deacetylation of anomeric sugar acetates with tin alkoxides. Carbohydr Res 1987. [DOI: 10.1016/0008-6215(87)80209-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
28
|
|
29
|
Anwendung des trichloracetimidatverfahrens auf 2-desoxy-2-phthalimido-d-glucose-derivative. Synthese von oligosacchariden der “Core-Region” von O-glycoproteinen des mucin-typs. Carbohydr Res 1985. [DOI: 10.1016/s0008-6215(00)90772-9] [Citation(s) in RCA: 95] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
30
|
|
31
|
MIWA T, TAKESHITA M, NAKAMURA S. Formation of N-phenyl-D-fructosylamine by enzymic transfructosylation from sucrose to aniline. ACTA ACUST UNITED AC 1960; 37:541-2. [PMID: 14423066 DOI: 10.1016/0006-3002(60)90518-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
32
|
Bredereck H, Wagner A, Luck W, Kleeberg U, Renner J. Über Mono-, Di- und Tri-trityl-Verbindungen der Glucose und Galaktose. ACTA ACUST UNITED AC 1959. [DOI: 10.1002/cber.19590921004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
33
|
|
34
|
|