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Džubák P, Gurská S, Bogdanová K, Uhríková D, Kanjaková N, Combet S, Klunda T, Kolář M, Hajdúch M, Poláková M. Antimicrobial and cytotoxic activity of (thio)alkyl hexopyranosides, nonionic glycolipid mimetics. Carbohydr Res 2020; 488:107905. [DOI: 10.1016/j.carres.2019.107905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/21/2019] [Accepted: 12/23/2019] [Indexed: 02/07/2023]
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Son SH, Byun Y, Sakairi N. Selection of Neighboring Group Participation Intermediates of Fully Acylated Donors around the Glycosylation Sites in Oligosaccharide Acceptors. Org Lett 2019; 21:9368-9371. [PMID: 31710504 DOI: 10.1021/acs.orglett.9b03601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stereo- and regioselective formation of glycosidic linkages is a challenging topic in oligosaccharide syntheses. The stereoselective construction of 1,2-trans-glycosides generally involves neighboring group participation, which is less successful when synthesizing β-1,3-linked oligosaccharides. The combined steric effect of a 2-O-substituent and an aglycon moiety in acceptors increases the efficiency of glycosylation via neighboring group participation. This steric effect was reduced by using vicinal polyol acceptors and was demonstrated in the synthesis of 1,3-linked branched oligosaccharides.
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Affiliation(s)
- Sang-Hyun Son
- Division of Environment Materials Science , Graduate School of Environmental Science, Hokkaido University , Kita-ku, Sapporo 060-0810 , Japan.,College of Pharmacy , Korea University , 2511 Sejong-ro, Jochiwon-eup , Sejong 30019 , Republic of Korea
| | - Youngjoo Byun
- College of Pharmacy , Korea University , 2511 Sejong-ro, Jochiwon-eup , Sejong 30019 , Republic of Korea
| | - Nobuo Sakairi
- Division of Environment Materials Science , Graduate School of Environmental Science, Hokkaido University , Kita-ku, Sapporo 060-0810 , Japan
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Yang W, Yang B, Ramadan S, Huang X. Preactivation-based chemoselective glycosylations: A powerful strategy for oligosaccharide assembly. Beilstein J Org Chem 2017; 13:2094-2114. [PMID: 29062430 PMCID: PMC5647719 DOI: 10.3762/bjoc.13.207] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 09/14/2017] [Indexed: 12/14/2022] Open
Abstract
Most glycosylation reactions are performed by mixing the glycosyl donor and acceptor together followed by the addition of a promoter. While many oligosaccharides have been synthesized successfully using this premixed strategy, extensive protective group manipulation and aglycon adjustment often need to be performed on oligosaccharide intermediates, which lower the overall synthetic efficiency. Preactivation-based glycosylation refers to strategies where the glycosyl donor is activated by a promoter in the absence of an acceptor. The subsequent acceptor addition then leads to the formation of the glycoside product. As donor activation and glycosylation are carried out in two distinct steps, unique chemoselectivities can be obtained. Successful glycosylation can be performed independent of anomeric reactivities of the building blocks. In addition, one-pot protocols have been developed that have enabled multiple-step glycosylations in the same reaction flask without the need for intermediate purification. Complex glycans containing both 1,2-cis and 1,2-trans linkages, branched oligosaccharides, uronic acids, sialic acids, modifications such as sulfate esters and deoxy glycosides have been successfully synthesized. The preactivation-based chemoselective glycosylation is a powerful strategy for oligosaccharide assembly complementing the more traditional premixed method.
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Affiliation(s)
- Weizhun Yang
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, MI 48824, USA
| | - Bo Yang
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, MI 48824, USA
| | - Sherif Ramadan
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, MI 48824, USA
- Chemistry Department, Faculty of Science, Benha University, Benha, Qaliobiya 13518, Egypt
| | - Xuefei Huang
- Department of Chemistry, Michigan State University, 578 South Shaw Lane, East Lansing, MI 48824, USA
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48824, USA
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Elgemeie GH, Salah AM, Abbas NS, Hussein HA, Mohamed RA. Nucleic acid components and their analogs: Design and synthesis of novel cytosine thioglycoside analogs. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2017; 36:139-150. [PMID: 28045647 DOI: 10.1080/15257770.2016.1231318] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The synthesis of a new category of novel cytosine 4-thioglycoside analogs has been first accomplished. The main step of this strategy is the synthesis of sodium pyrimidine-4-thiolate through the condensation of 2-cyano-N-arylacetamides with sodium cyanocarbonimidodithioate, followed by coupling with α-bromo-sugars to afford the corresponding cytosine 4-thioglycoside analogs. The free thioglycosides were also prepared. Subsequent studies on the application of this strategy for the preparation of other potent pyrimidine thioglycosides are reported.
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Affiliation(s)
- Galal H Elgemeie
- a Chemistry Department , Faculty of Science, Helwan University , Helwan, Cairo , Egypt
| | - Ali M Salah
- a Chemistry Department , Faculty of Science, Helwan University , Helwan, Cairo , Egypt
| | - Nermeen S Abbas
- a Chemistry Department , Faculty of Science, Helwan University , Helwan, Cairo , Egypt.,c Chemistry Department , Faculty of Science, Taibah University , Saudi Arabia
| | - Hoda A Hussein
- b Photochemistry Department , National Research Center , Dokki, Cairo , Egypt
| | - Reham A Mohamed
- b Photochemistry Department , National Research Center , Dokki, Cairo , Egypt
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Elgemeie G, Abu-Zaied M, Azzam R. Antimetabolites: A First Synthesis of a New Class of Cytosine Thioglycoside Analogs. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2016; 35:211-22. [PMID: 26986628 DOI: 10.1080/15257770.2015.1127961] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A first synthesis of a new class of novel cytosine thioglycoside analogs from readily available starting materials has been described. The key step of this protocol is the formation of sodium pyrimidine-4-thiolate via condensation of N'-arylidene-2-cyanoacetohydrazides with sodium cyanocarbonimidodithioate salt, followed by coupling with halo sugars to give the corresponding cytosine thioglycoside analogs. Ammonolysis of the latter compounds afforded the free thioglycosides.
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Affiliation(s)
- Galal Elgemeie
- a Chemistry Department , Faculty of Science, Helwan University , Helwan , Cairo , Egypt
| | - Mamdouh Abu-Zaied
- b Green Chemistry Department , National Research Center , Dokki , Giza , Egypt
| | - Rasha Azzam
- a Chemistry Department , Faculty of Science, Helwan University , Helwan , Cairo , Egypt
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Tsioupi DA, Stefan-Vanstaden RI, Kapnissi-Christodoulou CP. Chiral selectors in CE: recent developments and applications. Electrophoresis 2013; 34:178-204. [PMID: 23161372 DOI: 10.1002/elps.201200239] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 08/14/2012] [Accepted: 08/14/2012] [Indexed: 01/01/2023]
Abstract
This review article provides an overview of the recent advances in enantioanalysis by use of electrophoretic techniques. Due to the big number of publications in the subject mentioned above, this article is focused on chiral method developments and applications published from 2008 until 2011, and it demonstrates chiral selectors used in CE. Numerous chiral selectors have been used over the years, and these include the cyclic and the linear oligo- and polysaccharides, the branched polysaccharides, the polymeric and monomeric surfactants, the macrocyclic and other antibiotics, and the crown ethers. Different dual-selector systems are also presented in this article, and the results are compared with those obtained by use of a single chiral selector. Finally, several pharmaceutical and biomedical applications based on chiral recognition are summarized.
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Yang L, Qin Q, Ye XS. Preactivation: An Alternative Strategy in Stereoselective Glycosylation and Oligosaccharide Synthesis. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201200136] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Synthetic construction of a fucosyl chitobiose as an allergen-associated carbohydrate epitope and the glycopolymer involving highly clustered trisaccharidic sequences. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Tano C, Son SH, Furukawa JI, Furuike T, Sakairi N. Enantiomeric separation by MEKC using dodecyl thioglycoside surfactants: Importance of an equatorially oriented hydroxy group at C-2 position in separation of dansylated amino acids. Electrophoresis 2009; 30:2743-6. [DOI: 10.1002/elps.200800685] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Matsuoka K, Kohzu T, Hakumura T, Koyama T, Hatano K, Terunuma D. Synthetic construction of a Lex determinant via gabriel amine synthesis and the glycopolymer involving highly clustered Lex residues. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.03.099] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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