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Dimopoulou A, Manta S, Parmenopoulou V, Gkizis P, Coutouli-Argyropoulou E, Schols D, Komiotis D. Synthesis of novel thiopurine pyranonucleosides: evaluation of their bioactivity. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2015; 34:289-308. [PMID: 25774721 DOI: 10.1080/15257770.2014.992532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
We report the synthesis of novel thiopurine pyranonucleosides. Direct coupling of silylated 6-mercaptopurine and 6-thioguanine with the appropriate pyranoses 1a-e via Vorbrüggen nucleosidation, gave the N-9 linked mercaptopurine 2a-e and thioguanine 4a-e nucleosides, while their N-7 substituted congeners 10a-e and 7a-e, were obtained through condensation of the same acetates with 6-chloro and 2-amino-6-chloropurines, followed by subsequent thionation. Nucleosides 3a-e, 5a-e, 8a-e, and 11a-e were evaluated for their cytostatic activity in three different tumor cell proliferative assays.
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Affiliation(s)
- Athina Dimopoulou
- a Department of Biochemistry and Biotechnology, Laboratory of Bioorganic Chemistry , University of Thessaly , Larissa , Greece
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2
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Adamski A, Bogucki A, Świetlik R, Wróbel RJ, Klapiszewski Ł, Jesionowski T, Tylkowski B, Kubicki M, Patroniak V. Supramolecular synthons and pattern recognition in adenine amides – synthesis, structures and thermal properties. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1034125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ariel Adamski
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
| | - Andrzej Bogucki
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznan, Poland
| | - Roman Świetlik
- Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznan, Poland
| | - Rafał J. Wróbel
- Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, Pułaskiego 10, 70-310 Szczecin, Poland
| | - Łukasz Klapiszewski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Teofil Jesionowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Bartosz Tylkowski
- Departament d'Enginyeria Quimica, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain
| | - Maciej Kubicki
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
| | - Violetta Patroniak
- Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland
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Branched-chain sugar nucleosides: stereocontrolled synthesis and bioevaluation of novel 3'-C-trifluoromethyl and 3'-C-methyl pyranonucleosides. Carbohydr Res 2015; 407:170-8. [PMID: 25812993 DOI: 10.1016/j.carres.2015.01.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 01/27/2015] [Accepted: 01/28/2015] [Indexed: 11/21/2022]
Abstract
A new series of 3'-C-trifluoromethyl- and 3'-C-methyl-β-d-allopyranonucleosides of 5-fluorouracil and their deoxy derivatives has been designed and synthesized. Treatment of ketosugar 1 with trifluoromethyltrimethylsilane under catalytic fluoride activation and methyl magnesium bromide, gave 1,2:5,6-di-O-isopropylidene-3-C-trifluoromethyl (2a) and 3-C-methyl (2b)-α-D-allofuranose, respectively, in a virtually quantitative yield and with complete stereoselectivity. Hydrolysis followed by acetylation led to the 1,2,4,6-tetra-O-acetyl-3-C-trifluoromethyl (3a) and 3-C-methyl (3b)-β-D-allopyranose. Compounds 3a,b were then condensed with silylated 5-fluorouracil and deacetylated to afford the target nucleosides 5a,b. Deoxygenation of the peracylated allopyranoses 3a,b followed by condensation with silylated 5-fluorouracil and subsequent deacetylation yielded the target 3'-deoxy-3'-C-trifluoromethyl and 3'-deoxy-3'-C-methyl-β-d-glucopyranonucleosides 14a,b. The newly synthesized compounds were evaluated for their potential antiviral and cytostatic activities. The 3'-deoxy-3'-C-methyl- ribonucleoside 11b showed significant cytotoxic activity (∼7 μM) almost equally active against a variety of tumor cell lines.
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Godwin AR, Kojima S, Green CB, Wilusz J. Kiss your tail goodbye: the role of PARN, Nocturnin, and Angel deadenylases in mRNA biology. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2012; 1829:571-9. [PMID: 23274303 DOI: 10.1016/j.bbagrm.2012.12.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Revised: 12/12/2012] [Accepted: 12/16/2012] [Indexed: 01/06/2023]
Abstract
PARN, Nocturnin and Angel are three of the multiple deadenylases that have been described in eukaryotic cells. While each of these enzymes appear to target poly(A) tails for shortening and influence RNA gene expression levels and quality control, the enzymes differ in terms of enzymatic mechanisms, regulation and biological impact. The goal of this review is to provide an in depth biochemical and biological perspective of the PARN, Nocturnin and Angel deadenylases. Understanding the shared and unique roles of these enzymes in cell biology will provide important insights into numerous aspects of the post-transcriptional control of gene expression. This article is part of a Special Issue entitled: RNA Decay mechanisms.
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Affiliation(s)
- Alan R Godwin
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
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5
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Manta S, Parmenopoulou V, Kiritsis C, Dimopoulou A, Kollatos N, Papasotiriou I, Balzarini J, Komiotis D. Stereocontrolled facile synthesis and biological evaluation of (3'S) and (3'R)-3'-amino (and Azido)-3'-deoxy pyranonucleosides. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2012; 31:522-35. [PMID: 22849646 DOI: 10.1080/15257770.2012.696759] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
This article describes the synthesis of (3 'S) and (3 'R)-3 '-amino-3 '-deoxy pyranonucleosides and their precursors (3 'S) and (3 'R)-3 '-azido-3 '-deoxy pyranonucleosides. Azidation of 1,2:5,6-di-O-isopropylidene-3-O-toluenesulfonyl-α-D-allofuranose followed by hydrolysis and subsequent acetylation afforded 3-azido-3-deoxy-1,2,4,6-tetra-O-acetyl-D-glucopyranose, which upon coupling with the proper silylated bases, deacetylation, and catalytic hydrogenation, obtained the target 3 '-amino-3 '-deoxy-β-D-glucopyranonucleosides. The desired 1-(3 '-amino-3 '-deoxy-β-D-allopyranosyl)5-fluorouracil was readily prepared from the suitable imidazylate sugar after azidation followed by a protection/deprotection sequence and reduction of the unprotected azido precursor. No antiviral activity was observed for the novel nucleosides. Moderate cytostatic activity was recorded for the 5-fluorouracil derivatives.
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Affiliation(s)
- Stella Manta
- Laboratory of Bio-Organic Chemistry Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
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6
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Kiritsis C, Manta S, Parmenopoulou V, Dimopoulou A, Kollatos N, Papasotiriou I, Balzarini J, Komiotis D. Stereocontrolled synthesis of 4′-C-cyano and 4′-C-cyano-4′-deoxy pyrimidine pyranonucleosides as potential chemotherapeutic agents. Carbohydr Res 2012; 364:8-14. [DOI: 10.1016/j.carres.2012.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 10/15/2012] [Accepted: 10/16/2012] [Indexed: 12/12/2022]
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7
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Balatsos N, Vlachakis D, Chatzigeorgiou V, Manta S, Komiotis D, Vlassi M, Stathopoulos C. Kinetic and in silico analysis of the slow-binding inhibition of human poly(A)-specific ribonuclease (PARN) by novel nucleoside analogues. Biochimie 2012; 94:214-21. [DOI: 10.1016/j.biochi.2011.10.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 10/17/2011] [Indexed: 11/16/2022]
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8
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Kiritsis C, Manta S, Parmenopoulou V, Balzarini J, Komiotis D. Branched-chain C-cyano pyranonucleosides: synthesis of 3'-C-cyano & 3'-C-cyano-3'-deoxy pyrimidine pyranonucleosides as novel cytotoxic agents. Eur J Med Chem 2011; 46:5668-74. [PMID: 21917363 PMCID: PMC7115479 DOI: 10.1016/j.ejmech.2011.08.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 08/22/2011] [Accepted: 08/23/2011] [Indexed: 11/30/2022]
Abstract
This report describes the total and facile synthesis of 3′-C-cyano & 3′-C-cyano-3′-deoxy pyrimidine pyranonucleosides. Reaction of 3-keto glucoside 1 with sodium cyanide gave the desired precursor 3-C-cyano-1,2:5,6-di-O-isopropylidene-α-D-glucofuranose (2). Hydrolysis followed by acetylation led to the 1,2,3,4,6-penta-O-acetyl-3-C-cyano-D-glucopyranose (4). Compound 4 was condensed with silylated 5-fluorouracil, uracil, thymine and N4-benzoylcytosine, respectively and deacetylated to afford the target 1-(3′-C-cyano-β-D-glucopyranosyl)nucleosides 6a–d. Routine deoxygenation at position 3′ of cyanohydrin 2, followed by hydrolysis and acetylation led to the 3-C-cyano-3-deoxy-1,2,4,6-tetra-O-acetyl-D-allopyranose (10). Coupling of sugar 10 with silylated pyrimidines and subsequent deacetylation yielded the target 1-(3′-C-cyano-3′-deoxy-β-D-allopyranosyl)nucleosides 12a–d. The new analogues were evaluated for their antiviral and cytostatic activities. It was found that 6a was endowed with a pronounced anti-proliferative activity that was only 2- to 8-fold less potent than that shown for the parental base 5-fluorouracil. None of the compounds showed activity against a broad panel of DNA and RNA viruses.
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Affiliation(s)
- Christos Kiritsis
- Department of Biochemistry and Biotechnology, Laboratory of Bio-Organic Chemistry, University of Thessaly, 26 Ploutonos Str., 41221 Larissa, Greece
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Tsoukala E, Manta S, Tzioumaki N, Kiritsis C, Komiotis D. Keto-fluorothiopyranosyl nucleosides: a convenient synthesis of 2- and 4-keto-3-fluoro-5-thioxylopyranosyl thymine analogs. Carbohydr Res 2011; 346:2011-5. [DOI: 10.1016/j.carres.2011.05.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 05/09/2011] [Accepted: 05/12/2011] [Indexed: 11/25/2022]
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10
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Synthesis and biological evaluation of unsaturated keto and exomethylene d-arabinopyranonucleoside analogs: Novel 5-fluorouracil analogs that target thymidylate synthase. Eur J Med Chem 2011; 46:993-1005. [DOI: 10.1016/j.ejmech.2011.01.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 10/06/2010] [Accepted: 01/06/2011] [Indexed: 11/18/2022]
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11
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Efficient synthesis of exomethylene- and keto-exomethylene-d-glucopyranosyl nucleoside analogs as potential cytotoxic agents. Carbohydr Res 2011; 346:328-33. [DOI: 10.1016/j.carres.2010.10.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Accepted: 10/26/2010] [Indexed: 01/12/2023]
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12
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Tsoukala E, Tzioumaki N, Manta S, Riga A, Balzarini J, Komiotis D. Synthesis of 3-fluoro-6-S-(2-S-pyridyl) nucleosides as potential lead cytostatic agents. Bioorg Chem 2010; 38:285-93. [PMID: 20817215 PMCID: PMC7112006 DOI: 10.1016/j.bioorg.2010.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 08/09/2010] [Accepted: 08/12/2010] [Indexed: 11/27/2022]
Abstract
The 3-deoxy-3-fluoro-6-S-(2-S-pyridyl)-6-thio-β-d-glucopyranosyl nucleoside analogs 7 were prepared via two facile synthetic routes. Their precursors, 3-fluoro-6-thio-glucopyranosyl nucleosides 5a-e, were obtained by the sequence of deacetylation of 3-deoxy-3-fluoro-β-d-glucopyranosyl nucleosides 2a-e, selective tosylation of the primary OH of 3 and finally treatment with potassium thioacetate. The desired thiolpyridine protected analogs 7a-c,f,g were obtained by the sequence of deacetylation of 5a-c followed by thiopyridinylation and/or condensation of the corresponding heterocyclic bases with the newly synthesized peracetylated 6-S-(2-S-pyridyl) sugar precursor 13, which was obtained via a novel synthetic route from glycosyl donor 12. None of the compounds 6 and 7 showed antiviral activity, but the 5-fluorouracil derivative 7c and particularly the uracil derivative 7b were endowed with an interesting and selective cytostatic action against a variety of murine and human tumor cell cultures.
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Affiliation(s)
- Evangelia Tsoukala
- Department of Biochemistry and Biotechnology, University of Thessaly, Greece
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13
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Tsirkone VG, Tsoukala E, Lamprakis C, Manta S, Hayes JM, Skamnaki VT, Drakou C, Zographos SE, Komiotis D, Leonidas DD. 1-(3-Deoxy-3-fluoro-β-d-glucopyranosyl) pyrimidine derivatives as inhibitors of glycogen phosphorylase b: Kinetic, crystallographic and modelling studies. Bioorg Med Chem 2010; 18:3413-25. [DOI: 10.1016/j.bmc.2010.04.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Revised: 03/26/2010] [Accepted: 04/01/2010] [Indexed: 10/19/2022]
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14
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Synthesis of 4,6-dideoxy-3-fluoro-2-keto-β-d-glucopyranosyl analogues of 5-fluorouracil, N6-benzoyl adenine, uracil, thymine, N4-benzoyl cytosine and evaluation of their antitumor activities. Bioorg Chem 2010; 38:48-55. [DOI: 10.1016/j.bioorg.2009.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2009] [Revised: 11/09/2009] [Accepted: 11/11/2009] [Indexed: 11/23/2022]
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15
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16
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Balatsos NAA, Vlachakis D, Maragozidis P, Manta S, Anastasakis D, Kyritsis A, Vlassi M, Komiotis D, Stathopoulos C. Competitive inhibition of human poly(A)-specific ribonuclease (PARN) by synthetic fluoro-pyranosyl nucleosides. Biochemistry 2009; 48:6044-51. [PMID: 19472977 DOI: 10.1021/bi900236k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Poly(A)-specific ribonuclease (PARN) is a cap-interacting deadenylase that mediates, together with other exonucleases, the eukaryotic mRNA turnover and thus is actively involved in the regulation of gene expression. Aminoglycosides and natural nucleotides are the only reported modulators of human PARN activity, so far. In the present study, we show that synthetic nucleoside analogues bearing a fluoro-glucopyranosyl sugar moiety and benzoyl-modified cytosine or adenine as a base can effectively inhibit human PARN. Such nucleoside analogues exhibited substantial inhibitory effects, when tested against various cancer cell lines, as has been previously reported. Kinetic analysis showed that the inhibition of PARN is competitive and could not be released by altering Mg(II) concentration. Moreover, substitution of the 2', 4', or 6'-OH of the sugar moiety with acetyl and/or trityl groups was crucial for inhibitory efficacy. To understand how the nucleosides fit into the active site of PARN, we performed molecular docking experiments followed by molecular dynamics simulations. The in silico analysis showed that these compounds can efficiently dock into the active site of PARN. Our results support the idea that the sugar moiety mediates the stabilization of the nucleoside into the active site through interactions with catalytic amino acid residues. Taken together, our in vitro and in silico data suggest that human PARN is among the molecular targets of these compounds and could act therapeutically by lowering the mRNA turnover rate, thus explaining their known in vivo inhibitory effect at the molecular level.
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Affiliation(s)
- Nikolaos A A Balatsos
- Department of Biochemistry & Biotechnology, University of Thessaly, 26 Ploutonos Street, 412 21 Larissa, Greece
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Manta S, Tsoukala E, Tzioumaki N, Goropevšek A, Pamulapati RT, Cencič A, Balzarini J, Komiotis D. Dideoxy fluoro-ketopyranosyl nucleosides as potent antiviral agents: synthesis and biological evaluation of 2,3- and 3,4-dideoxy-3-fluoro-4- and -2-keto-beta-d-glucopyranosyl derivatives of N(4)-benzoyl cytosine. Eur J Med Chem 2009; 44:2696-704. [PMID: 19246130 PMCID: PMC7126854 DOI: 10.1016/j.ejmech.2009.01.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Revised: 01/16/2009] [Accepted: 01/20/2009] [Indexed: 12/15/2022]
Abstract
The synthesis of the dideoxy fluoro ketopyranonucleoside analogues, 1-(2,3-dideoxy-3-fluoro-6-O-trityl-beta-d-glycero-hexopyranosyl-4-ulose)-N(4)-benzoyl cytosine (7a), 1-(3,4-dideoxy-3-fluoro-6-O-trityl-beta-d-glycero-hexopyranosyl-2-ulose)-N(4)-benzoyl cytosine (13a) and their detritylated analogues 8a and 14a, respectively, is described. Condensation of peracetylated 3-deoxy-3-fluoro-D-glucopyranose (1) with silylated N(4)-benzoyl cytosine, followed by selective deprotection and isopropylidenation afforded compound 2. Routine deoxygenation at position 2', followed by a deprotection-selective reprotection sequence afforded the partially tritylated dideoxy nucleoside of cytosine 6, which upon oxidation of the free hydroxyl group at the 4'-position, furnished the desired tritylated 2,3-dideoxy-3-fluoro ketonucleoside 7a in equilibrium with its hydrated form 7b. Compound 2 was the starting material for the synthesis of the dideoxy fluoro ketopyranonucleoside 13a. Similarly, several subsequent protection and deprotection steps as well as routine deoxygenation at position 4', followed by oxidation of the free hydroxyl group at the 2'-position of the partially tritylated dideoxy nucleoside 12, yielded the desired carbonyl compound 13a in equilibrium with its hydrated form 13b. Finally, trityl removal from 7a/b and 13a/b provided the unprotected 2,3-dideoxy-3-fluoro-4-keto and 3,4-dideoxy-3-fluoro-2-ketopyranonucleoside analogues 8a and 14a, in equilibrium with their gem-diol forms 8b and 14b. None of the compounds showed inhibitory activity against a wide variety of DNA and RNA viruses at subtoxic concentrations, except 7a/b that was highly efficient against rotavirus infection. Nucleoside 7a/b also exhibited cytostatic activity against cells of various cancers. BrdU-cell cycle analysis revealed that the mechanism of cytostatic activity may be related to a delay in G1/S phase and initiation of programmed cell death.
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Affiliation(s)
- Stella Manta
- Department of Biochemistry and Biotechnology, Laboratory of Organic Chemistry, University of Thessaly, 26 Ploutonos Str., 41221 Larissa, Greece
| | - Evangelia Tsoukala
- Department of Biochemistry and Biotechnology, Laboratory of Organic Chemistry, University of Thessaly, 26 Ploutonos Str., 41221 Larissa, Greece
| | - Niki Tzioumaki
- Department of Biochemistry and Biotechnology, Laboratory of Organic Chemistry, University of Thessaly, 26 Ploutonos Str., 41221 Larissa, Greece
| | - Aleš Goropevšek
- Department of Biochemistry, Medical Faculty, University of Maribor, Slovenia
| | - Ravi Teja Pamulapati
- Department of Microbiology, Biochemistry and Biotechnology, Faculty of Agriculture, University of Maribor, Vrbanska c.30, 2000 Maribor, Slovenia
| | - Avrelija Cencič
- Department of Microbiology, Biochemistry and Biotechnology, Faculty of Agriculture, University of Maribor, Vrbanska c.30, 2000 Maribor, Slovenia
- Department of Biochemistry, Medical Faculty, University of Maribor, Slovenia
| | - Jan Balzarini
- Rega Institute for Medical Research, Katholieke Universtiteit Leuven, 3000 Leuven, Belgium
| | - Dimitri Komiotis
- Department of Biochemistry and Biotechnology, Laboratory of Organic Chemistry, University of Thessaly, 26 Ploutonos Str., 41221 Larissa, Greece
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Tzioumaki N, Tsoukala E, Manta S, Agelis G, Balzarini J, Komiotis D. Synthesis, Antiviral and Cytostatic Evaluation of Unsaturated Exomethylene and Keto D‐Lyxopyranonucleoside Analogues. Arch Pharm (Weinheim) 2009; 342:353-60. [DOI: 10.1002/ardp.200900004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Affiliation(s)
- Peng Liu
- The University of Georgia, College of Pharmacy, Athens, GA 30602
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Synthesis and molecular modelling of unsaturated exomethylene pyranonucleoside analogues with antitumor and antiviral activities. Eur J Med Chem 2008; 43:1366-75. [DOI: 10.1016/j.ejmech.2007.10.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2007] [Accepted: 10/12/2007] [Indexed: 11/17/2022]
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21
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Tsoukala E, Manta S, Tzioumaki N, Agelis G, Komiotis D. A concise synthesis of 3-fluoro-5-thio-xylo- and glucopyranoses, useful precursors towards their corresponding pyranonucleoside derivatives. Carbohydr Res 2008; 343:1099-103. [PMID: 18313037 DOI: 10.1016/j.carres.2008.02.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2007] [Revised: 02/01/2008] [Accepted: 02/04/2008] [Indexed: 11/19/2022]
Abstract
The chemical synthesis of 1,2,4-tri-O-acetyl-3-deoxy-3-fluoro-5-thio-D-xylopyranose, 1,2,4,6-tetra-O-acetyl-3-deoxy-3-fluoro-5-thio-alpha-D-glucopyranose and their corresponding nucleosides of thymine is described. Treatment of 3-fluoro-5-S-acetyl-5-thio-D-xylofuranose, obtained by hydrolysis of the isopropylidene group of 3-fluoro-1,2-O-isopropylidene-5-S-acetyl-5-thio-D-xylofuranose, with methanolic ammonia and direct acetylation, led to triacetylated 3-deoxy-3-fluoro-5-thio-D-xylopyranose. Condensation of acetylated 3-fluoro-5-thio-D-xylopyranose with silylated thymine afforded the corresponding nucleoside. Selective benzoylation and direct methanesulfonylation of 3-fluoro-1,2-O-isopropylidene-alpha-D-glucofuranose gave the 6-O-benzoyl-5-O-methylsulfonyl derivative, which on treatment with sodium methoxide afforded the 5,6-anhydro derivative. Treatment of the latter with thiourea, followed by acetolysis, gave the 3-fluoro-5-S-acetyl-6-O-acetyl-1,2-O-isopropylidene-5-thio-alpha-D-glucofuranose. 3-fluoro-5-S-acetyl-6-O-acetyl-5-thio-D-glucofuranose, obtained after hydrolysis of 5-thiofuranose isopropylidene, was treated with ammonia in methanol and directly acetylated, giving tetraacetylated 3-deoxy-3-fluoro-5-thio-alpha-D-glucopyranose. Condensation of the latter with silylated thymine afforded the desired 3-deoxy-3-fluoro-5-thio-beta-D-glucopyranonucleoside analogue.
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Affiliation(s)
- Evangelia Tsoukala
- Department of Biochemistry and Biotechnology, Laboratory of Organic Chemistry, University of Thessaly, 26 Ploutonos Str., GR-41221 Larissa, Greece
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