1
|
Dimakos V, Taylor MS. Site-Selective Functionalization of Hydroxyl Groups in Carbohydrate Derivatives. Chem Rev 2018; 118:11457-11517. [DOI: 10.1021/acs.chemrev.8b00442] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Victoria Dimakos
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Mark S. Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| |
Collapse
|
2
|
Matsushita K, Sato Y, Funamoto S, Tamura JI. Side reactions with 2,2,2-trichloroethoxysulfates during the synthesis of glycans. Carbohydr Res 2014; 396:14-24. [PMID: 25084507 DOI: 10.1016/j.carres.2014.05.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 05/16/2014] [Accepted: 05/16/2014] [Indexed: 10/25/2022]
Abstract
Protected sulfate groups may be used as an alternative tool to provide sulfate esters at hydroxyl and amino groups, particularly on complex glycans. We examined 2,2,2-trichloroethoxysulfation at the mono-, di-, and trihydroxyl groups of saccharide moieties to show regioselective sulfation. We found some side reactions including inter- and intramolecular nucleophilic reactions with 2,2,2-trichloroethoxysulfates.
Collapse
Affiliation(s)
- Kenya Matsushita
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyamacho-Minami, Tottori 680-8552, Japan
| | - Yuta Sato
- Otsuka Chemical Co, Ltd, 463 Kagasuno, Kawauchi-cho, Tokushima 771-0193, Japan
| | - Shinji Funamoto
- Department of Regional Environment, Faculty of Regional Sciences, Tottori University, 4-101 Koyamacho-Minami, Tottori 680-8551, Japan
| | - Jun-ichi Tamura
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyamacho-Minami, Tottori 680-8552, Japan; Department of Regional Environment, Faculty of Regional Sciences, Tottori University, 4-101 Koyamacho-Minami, Tottori 680-8551, Japan.
| |
Collapse
|
3
|
Hevey R, Morland A, Ling CC. A Scalable Approach to Obtaining Orthogonally Protected β-d-Idopyranosides. J Org Chem 2012; 77:6760-72. [DOI: 10.1021/jo300764k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rachel Hevey
- Alberta Glycomics
Centre, Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary,
Alberta T2N 1N4, Canada
| | - Alizée Morland
- Alberta Glycomics
Centre, Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary,
Alberta T2N 1N4, Canada
| | - Chang-Chun Ling
- Alberta Glycomics
Centre, Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary,
Alberta T2N 1N4, Canada
| |
Collapse
|
4
|
Tiruchinapally G, Yin Z, El-Dakdouki M, Wang Z, Huang X. Divergent heparin oligosaccharide synthesis with preinstalled sulfate esters. Chemistry 2011; 17:10106-12. [PMID: 21786352 PMCID: PMC3324038 DOI: 10.1002/chem.201101108] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Indexed: 12/26/2022]
Abstract
Traditional chemical synthesis of heparin oligosaccharides first involves assembly of the full length oligosaccharide backbone followed by sulfation. Herein, we report an alternative strategy in which the O-sulfate was introduced onto glycosyl building blocks as a trichloroethyl ester prior to assembly of the full length oligosaccharide. This allowed divergent preparation of both sulfated and non-sulfated building blocks from common advanced intermediates. The O-sulfate esters were found to be stable during glycosylation as well as typical synthetic manipulations encountered during heparin oligosaccharide synthesis. Furthermore, the presence of sulfate esters in both glycosyl donors and acceptors did not adversely affect the glycosylation yields, which enabled us to assemble multiple heparin oligosaccharides with preinstalled 6-O-sulfates.
Collapse
Affiliation(s)
| | - Zhaojun Yin
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Mohammad El-Dakdouki
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Zhen Wang
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Xuefei Huang
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| |
Collapse
|
5
|
Desoky AY, Hendel J, Ingram L, Taylor SD. Preparation of trifluoroethyl- and phenyl-protected sulfates using sulfuryl imidazolium salts. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.11.085] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
6
|
Desoky AY, Taylor SD. Multiple and Regioselective Introduction of Protected Sulfates into Carbohydrates Using Sulfuryl Imidazolium Salts. J Org Chem 2009; 74:9406-12. [PMID: 19924833 DOI: 10.1021/jo901882f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ahmed Y. Desoky
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON Canada, N2L 3G1
| | - Scott D. Taylor
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON Canada, N2L 3G1
| |
Collapse
|
7
|
Sakakibara T, Narumi S, Matsuo I, Okada S, Nakamura T. Preparation of 2-C- and 3-C-cyano-2-enopyranoside derivatives and their epoxidation. Carbohydr Res 2007; 342:2339-53. [PMID: 17692300 DOI: 10.1016/j.carres.2007.07.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2007] [Revised: 07/02/2007] [Accepted: 07/06/2007] [Indexed: 11/29/2022]
Abstract
Methyl 4,6-O-benzylidene-2-C- and 3-C-cyano-2,3-dideoxy-D-erythro-hex-2-enopyranosides and -2-enitols were prepared and their epoxidation was performed.
Collapse
Affiliation(s)
- Tohru Sakakibara
- Graduate School of Integrated Science, Yokohama City University, Seto Kanazawa-ku, Yokohama 236 Japan, Yokohama 236, Japan.
| | | | | | | | | |
Collapse
|
8
|
|
9
|
|
10
|
Liu Z, Perlin AS. Regioselectivity in the sulfation of some chemically-modified heparins, and observations on their cation-binding characteristics. Carbohydr Res 1992; 236:121-33. [PMID: 1291046 DOI: 10.1016/0008-6215(92)85011-n] [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: 12/26/2022]
Abstract
Two modified forms of heparin, polymers A and B, have been prepared, one containing residues of nonsulfated alpha-L-idopyranosyluronic acid (3) and the other residues of alpha-L-galactopyranosyluronic acid (7), in place of the normal alpha-L-idopyranosyluronic acid 2-sulfate (1). In addition, both A and B contained 2-acetamido-2-deoxy-alpha-D-glucopyranosyl 6-sulfate residues (6) in place of the corresponding N-sulfated residues (2) of the original heparin. These polymers were subjected to sulfation under various conditions. Examination of the products by NMR spectroscopy showed that polymer A was sulfated initially at position-3 of residue 3, and that slower substitution occurred at position-3 of 6. By contrast, polymer B exhibited low regioselectivity, as sulfation occurred with about equal facility at positions-2 and -3 of 7, and -3 of 6. The sulfation products had no significant anti Xa activity. Based on the paramagnetic effects of Cu2+ and chemical shift displacements induced by Ca2+, NMR spectroscopy was used to compare cation-binding properties of A and B with those of heparin. In contrast to heparin, which forms a complex with Cu2+ detectable at a level of < 10(-3) mol per dimeric unit of the polymer, neither A nor B exhibited an interaction with the cation. However, polymer A was found to bind Ca2+, in this respect being distinct from the related modification, 1-->6, which contains a 2-sulfate group in 1, as well as from polymer B.
Collapse
Affiliation(s)
- Z Liu
- Department of Chemistry, McGill University, Montreal, Quebec, Canada
| | | |
Collapse
|
11
|
Rej RN, Ludwig-Baxter KG, Perlin AS. Sulfation of some chemically-modified heparins. Formation of a 3-sulfate analog of heparin. Carbohydr Res 1991; 210:299-310. [PMID: 1878883 DOI: 10.1016/0008-6215(91)80130-f] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A modified form of heparin containing residues of nonsulfated alpha-L-idopyranosyluronic acid (7) in place of the normal 2-sulfate (1) was sulfated with sulfur trioxide-trimethylamine in dimethylformamide at 0 and 25 degrees. Examination of the reaction products by n.m.r. spectroscopy showed that sulfation occurred selectively at C-3 of residue 7, to give a new polymer that may be described as a 3-sulfate analog of heparin. A slower substitution reaction led subsequently to sulfation at C-3 of 2-deoxy-2-sulfamino-alpha-D-glucopyranosyl 6-sulfate residues (2), although this was accompanied by partial N-desulfation of 2. An analogous pattern of O-sulfation-N-desulfation was observed for the residues of 2 in two other modified heparins, one containing residues of 2,3-anhydro-alpha-L-gulopyranosyluronic acid and the other residues of alpha-L-galactopyranosyluronic acid, in place of residues of 1. The galacto diastereomer exhibited relatively low regioselectivity, as it was found to be sulfated at C-2 or C-2.3, or both. Selective resulfation of free amino groups gave the products that were examined for anticoagulant activity and susceptibility to enzymolysis by heparinase. Antithrombin-binding affinity measurements were also carried out. Although none of the materials had significant anti-Xa activity, nor were they affected by heparinase, their patterns of binding to antithrombinagarose were not dissimilar to that of heparin.
Collapse
Affiliation(s)
- R N Rej
- Department of Chemistry, McGill University, Montreal, Canada
| | | | | |
Collapse
|
12
|
Abdel-Malik MM, Perlin AS. Reactions on phenyl chlorosulfate at OH-1, -4, and -6 of aldohexopyranose derivatives. Formation of 1,2-oxazoline and 4,6-cyclic sulfate rings. Carbohydr Res 1989. [DOI: 10.1016/0008-6215(89)84091-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|