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Sallam MAE. Homo-C-nucleoside analogs IV. Synthesis of 4-(2,5-anhydro-D-altro-pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole homo-C-nucleoside. CD assignment of the absolute configuration of the carbon bridge. Chirality 2017; 29:33-37. [PMID: 28052591 DOI: 10.1002/chir.22663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Dehydrative cyclization of 4-(D-altro-pentitol-1-yl)2-phenyl-2H-1,2,3-triazole in basic medium with one moler equivalent of p-toluene sulfonyl chloride in pyridine solution gave the homo-C-nucleoside 4-(2,5-anhydro-D-altro-1-yl)-2-phenyl-2H-1,2,3-triazole. The structure and anomeric configuration was determined by acylation, nuclear magnetic resonance (NMR), and mass spectroscopy. The stereochemistry at the carbon bridge of homo-C-nucleoside 2-phenyl-2H-1,2,3-triazoles was determined by circular dichroism (CD) spectroscopy.
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Affiliation(s)
- Mohammed A E Sallam
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt
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El-Sadek MM, Hassan SY, El-Dayem NSA, Yacout GA. 5-(5-Aryl-1,3,4-oxadiazole-2-carbonyl)furan-3-carboxylate and new cyclic C-glycoside analogues from carbohydrate precursors with MAO-B, antimicrobial and antifungal activities. Molecules 2012; 17:7010-27. [PMID: 22678415 PMCID: PMC6268659 DOI: 10.3390/molecules17067010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Revised: 04/27/2012] [Accepted: 05/09/2012] [Indexed: 11/23/2022] Open
Abstract
Cyclization of acyclic C-glycoside derivatives 1a,b to 2a,b as the major isomers, and 4a,b as the minor isomers were carried out. The isopropylidene derivatives 3a,b were prepared, as well as the hydrazide derivative 6, which was condensed with a variety of aldehydes to give hydrazones 7a–e which were also prepared from the compounds 12a–e. Acetylation of 7a,d gave the corresponding acetyl derivatives 8a,d, respectively. In addition, the dicarbonyl compound 9 was prepared in the hydrate form, which reacted with a number of aroylhydrazines to give the corresponding bisaroyl-hydrazones 10a–d, which were cyclized into 1,3,4-oxadiazoles 11a–d. Furthermore, two of the prepared compounds were examined to show the ability to activate MAO-B. In addition a number of prepared compounds showed antibacterial and antiviral activities.
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Affiliation(s)
- Mohamed Mohamed El-Sadek
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt; (S.Y.H.); (N.S.A.E.-D.)
- Author to whom correspondence should be addressed; ; Tel.: +20-01-006-544-617; Fax: +20-3-593-2488
| | - Seham Yassen Hassan
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt; (S.Y.H.); (N.S.A.E.-D.)
| | - Nagwa Said Abd El-Dayem
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt; (S.Y.H.); (N.S.A.E.-D.)
| | - Galila Ahmed Yacout
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria 21231, Egypt;
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Sallam MA, Louis FF, Cassady JM. Studies ON Epimeric-D-asabino-and-D-ribo-tetritol-1-yl-2-phenyl-2 H-1,2,3-triazoles. Synthesis and Anomeric Configuration of 4-(α-and β-D-Erythrofuranosyl)-2-phenyl-2 H-1,2,3-Triazole C-Nucleoside Analogs. ACTA ACUST UNITED AC 2011. [DOI: 10.1080/07328319808004674] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Mohammed A.E. Sallam
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria , Egypt
| | - Farida F. Louis
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria , Egypt
| | - John M. Cassady
- b College of Pharmacy, The Ohio State University , Columbus , OH , 43210
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Reddy PV, Bajpai V, Kumar B, Shaw AK. Studies on Tetrahydrofuran-Based Highly O-Functionalized Alkynes: Applications to Synthesis of Tetrahydrofuranyl-Polyynes and C-Nucleoside Analogues. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001442] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Sallam MAE. Homo-C-nucleoside analogs III. Studies on the base-catalyzed dehydrative cyclization of 4-(d-manno-pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole. Carbohydr Res 2010; 345:2233-8. [PMID: 20817140 DOI: 10.1016/j.carres.2010.06.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2010] [Accepted: 06/22/2010] [Indexed: 11/26/2022]
Abstract
Treatment of 4-(d-manno-pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole with one molar equivalent of 2,4,6-triisopropylbenzenesulfonyl chloride (TIBSCl) in pyridine solution afforded the homo-C-nucleoside analog; 4-(2,5-anhydro-d-manno-pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole in 54% yield and 4-(α-d-arabinopyranosyl)-2-phenyl-2H1,2,3-triazole analog in 3% yield. The 4-(5-O-triisopropylbenzenesulfonyl)-d-manno-pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole analog was isolated as an intermediate and identified as its tetra-O-acetyl derivative. The 4-(5-chloro-5-deoxy-d-manno-pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole analog was isolated as a byproduct. The structure and anomeric configuration of the products were determined by acylation, NMR spectroscopy, and mass spectrometry.
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Affiliation(s)
- Mohammed A E Sallam
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
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Sallam MA. Chiroptical Assignment of the Anomeric Configuration of 4-(α,β-D-lyxopyranosyl)- and 4-(α,β-D-lyxofuranosyl)-2-phenyl-2H-1,2,3-Triazole C-Nucleoside Anomeric Pairs: Extension of the CD Triazole Rule. J Carbohydr Chem 2009. [DOI: 10.1080/07328300903339996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mohammed A.E. Sallam
- a Chemistry Department, Faculty of Science , Alexandria University , Alexandria, Egypt
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Sallam MAE, Louis FF. Studies on the dehydrative cyclization of epimeric 4-(L-xylo and L-lyxo-tetritol-1-yl)-2-phenyl-2H-1,2,3-triazoles. Circular dichroism and NMR assignment of the formed anomericC-nucleoside L-threofuranosyl triazole analogs. Chirality 2004; 16:331-5. [PMID: 15069664 DOI: 10.1002/chir.20033] [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] [Indexed: 11/07/2022]
Abstract
Dehydrative cyclization of epimeric 4-(L-xylo- and L-lyxo-tetritol-1-yl)-2-phenyl-2H-1,2,3-triazoles afforded the anomeric alpha and beta-L-threofuranosyl analogs. The anomeric configuration of the formed anomeric C-nucleoside analogs was determined by circular dichroism and NMR spectroscopy.
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Affiliation(s)
- Mohammed A E Sallam
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
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Sallam MA, Abdel Megid SM, Townsend LB. Acid-catalyzed dehydrative cyclization of 4-(D-galacto -pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole. synthesis and anomeric configuration of D-lyxo-C-nucleoside analogs. Carbohydr Res 2001; 330:53-63. [PMID: 11217962 DOI: 10.1016/s0008-6215(00)00251-2] [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: 11/20/2022]
Abstract
Dehydration of 4-(D-galacto-pentitol-1-yl)-2-phenyl-2H-1,2,3-triazole with 20% methanolic sulfuric acid afforded the anomeric pairs of nucleosides, 4-(alpha-D-lyxopyranosyl)-2-phenyl-2H-1,2,3-triazole (major component) and its beta-anomer, as well as 4-(alpha-D-lyxofuranosyl)-2H-1,2,3-triazole and its beta-anomer. The four anomeric C-nucleosides were separated by chromatography, and their structure and anomeric configuration were determined by periodate oxidation, acylation, and NMR spectroscopy as well as mass spectrometry. The anomeric assignment from optical rotation was not in agreement with final structure assignment and represented a violation of the Hudson isorotation rules. NOE studies and X-ray diffraction measurements confirmed the anomeric configuration.
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Affiliation(s)
- M A Sallam
- Department of Chemistry, Faculty of Science, Alexandria University, Egypt
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Sallam MA, Louis FF, Cassady JM. Studies on epimeric D-xylo-and D-lyxo-tetritol-1-yl-2-phenyl-2H-1,2,3-triazoles. Synthesis and anomeric configuration of 4-(alpha-and beta-D-threofuranosyl)-2-phenyl-2H-1,2,3-triazole C-nucleoside analogs. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2000; 19:941-54. [PMID: 10893713 DOI: 10.1080/15257770008033034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Treatment of 4-(D-xylo-tetritol-1-yl)-2-phenyl-2H-1,2,3-triazole (1) with one mole equivalent of tosyl chloride in pyridine solution, afforded the C-nucleoside analog; 4-(beta-D-threofuranosyl)-2-phenyl-2H-1,2,3-triazole (2) in 55% yield, as well as the byproduct 4-(4-chloro-4-deoxy-D-xylo-tetritol-1-yl)-2-phenyl-2H-1,2,3-triazo le (4). Treatment of the epimeric 4-(D-lyxo-tetritol-1-yl)-2-phenyl-2H-1,2,3-triazole (6) with tosyl chloride in pyridine solution afforded the anomeric C-nucleoside analog; 4-(alpha-D-threofuranosyl)-2-phenyl-2H-1,2,3-triazole (7) in 29% yield, as well as the byproduct 4-(4-chloro-4-deoxy-D-lyxo-tetritol-1-yl)-2-phenyl-2H-1,2,3- triazole (9). Similar treatment of 1 and 6 with trifluoromethanesulfonyl chloride in pyridine solution afforded 2 and 7, respectively. The structure and anomeric configuration of these compounds were determined by acetylation, NMR, NOE, and circular dichroism spectroscopy, as well as mass spectrometry.
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Affiliation(s)
- M A Sallam
- Chemistry Department, Faculty of Science, Alexandria University, Egypt
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Sallam MA, Ibrahim ESI, El-Eter KA, Cassady JM. Synthesis and anomeric configuration of 2-(erythrofuranosyl)benzimidazole C-nucleoside analogues. Carbohydr Res 1997. [DOI: 10.1016/s0008-6215(96)00296-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Shaban MA, Nasr AZ. The Chemistry of C-Nucleosides and Their Analogs I: C-Nucleosides of Hetero Monocyclic Bases. ADVANCES IN HETEROCYCLIC CHEMISTRY 1997. [DOI: 10.1016/s0065-2725(08)60363-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Sallam MA, El Shemany HA. 1-Phenyl-3-(α- and -β-d-threofuranosyl-pyrazolo[3,4-b]-quinoxaline C-nucleoside analogues. Synthesis and anomeric configuration assignment by CD and 1H NMR spectroscopy. Carbohydr Res 1994. [DOI: 10.1016/0008-6215(94)84028-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Correlation between the circular dichroism spectra of C-nucleoside 1,2,3-osotriazole analogs and their anomeric configuration. Carbohydr Res 1984. [DOI: 10.1016/0008-6215(84)85296-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Structure and anomeric configuration of the C-nucleoside analogs obtained by dehydration of 7-deoxy-l-manno-2-heptulose phenylosazone. Carbohydr Res 1982. [DOI: 10.1016/s0008-6215(00)80733-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Studies on 3-epimeric l-2-hexulose phenylosazones. Structure and anomeric configuration of the 3,6-anhydro-osazone derivatives obtained from l-xylo- and l-lyxo-2-hexulose phenylosazone. Carbohydr Res 1982. [DOI: 10.1016/s0008-6215(00)88062-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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