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Nikam BP, Kappe T. Synthesis of Acetyl and Iodo Derivatives of 4-Hydroxy-6-phenyl-6H-pyrano[3,2-c]pyridine-2,5-diones and 4-Hydroxy-1-phenylpyridin-2(1H)-ones. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- B. P. Nikam
- Department of Chemistry; College of Engineering and Polytechnic; Sakharale, Tal.Walwa, Dist Sangli M.S. 414 415 India
| | - T. Kappe
- Institute of Organic Chemistry; Karl-Franzens University of Graz; Heinrichstraße 28 A-8010 Graz Austria
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Nikam BP, Kappe T. Synthesis of 3-Acetyl-4-hydroxy-1-phenylpyridin-2(1H)-one Derivatives. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- B. P. Nikam
- Department of Chemistry; College of Engineering and Polytechnic; Sakharale, Tal. Walwa, Dist. Sangli M.S. 414 415 India
| | - T. Kappe
- Organic Synthesis Group; Institute of Organic Chemistry, Karl-Franzens University of Graz; Heinrichstraβe 28 A-8010 Graz Austria
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Taylor SD, Mirzaei F, Bearne SL. Bismethylene triphosphate nucleotides of uridine 4-phosphate analogues: a new class of anionic pyrimidine nucleotide analogues. J Org Chem 2008; 73:1403-12. [PMID: 18215061 DOI: 10.1021/jo702249j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cytidine-5'-triphosphate synthase (CTPS) catalyzes the formation of cytidine triphosphate (CTP) from glutamine, uridine 5'-triphosphate (UTP), and adenosine 5'-triphosphate (ATP). This reaction proceeds via formation of the high-energy intermediate UTP-4-phosphate (UTP-4-P). Stable analogues of UTP-4-P may be potent inhibitors of CTPS and useful as lead structures for the development of anticancer and antiviral agents. Several bismethylene triphosphate (BMT) nucleotides of uridine 4-phosphate (U-4-P) analogues have been prepared. A key step was the selective methanolysis, with the aid of a tin catalyst, of the 5' ester moiety of 2',3',5'-tri-O-acetyl or tri-O-benzoyl U-4-P analogues. We believe this represents the first general approach to the selective cleavage of 5' benzoyl esters in benzoylated nucleosides. Mitsunobu coupling of these 5'-deprotected U-4-P analogues to an unsymmetrical, protected BMT bearing a free phosphonic acid moiety at one of the terminal positions gave fully protected BMT-U-4-P analogues. Global deprotection of these species was achieved using TMSBr followed by treatment with NH4OH-MeOH or NH4OH-pyridine. The resulting BMT nucleotides represent a new class of anionic pyrimidine nucleotide analogues.
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Affiliation(s)
- Scott D Taylor
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada.
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Majumdar KC, Rahaman H, Roy B. Synthesis of Potentially Bioactive Heterocycles: Thermal [3,3]Sigmatropic Rearrangement of 4‐(4′‐Aryloxybut‐2′‐ynyloxy)‐6‐methyl‐2‐pyridone. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910500451530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- K. C. Majumdar
- a Department of Chemistry , University of Kalyani , Kalyani , India
| | - H. Rahaman
- a Department of Chemistry , University of Kalyani , Kalyani , India
| | - B. Roy
- a Department of Chemistry , University of Kalyani , Kalyani , India
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Kafka S, Aigner R, Kappe T. Reaction of malonates with camphoranile synthesis of 4-hydroxy-2-pyridones attached to the bornane ring system. J Heterocycl Chem 2006. [DOI: 10.1002/jhet.5570430444] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Das SR, Piccirilli JA. General acid catalysis by the hepatitis delta virus ribozyme. Nat Chem Biol 2005; 1:45-52. [PMID: 16407993 DOI: 10.1038/nchembio703] [Citation(s) in RCA: 183] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2004] [Accepted: 03/16/2005] [Indexed: 11/08/2022]
Abstract
Recent crystallographic and functional analyses of RNA enzymes have raised the possibility that the purine and pyrimidine nucleobases may function as general acid-base catalysts. However, this mode of nucleobase-mediated catalysis has been difficult to establish unambiguously. Here, we used a hyperactivated RNA substrate bearing a 5'-phosphorothiolate to investigate the role of a critical cytosine residue in the hepatitis delta virus ribozyme. The hyperactivated substrate specifically suppressed the deleterious effects of cytosine mutations and pH changes, thereby linking the protonation of the nucleobase to leaving-group stabilization. We conclude that the active-site cytosine provides general acid catalysis, mediating proton transfer to the leaving group through a protonated N3-imino nitrogen. These results establish a specific role for a nucleobase in a ribozyme reaction and support the proposal that RNA nucleobases may function in a manner analogous to that of catalytic histidine residues in protein enzymes.
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Affiliation(s)
- Subha R Das
- Howard Hughes Medical Institute, Department of Biochemistry & Molecular Biology, University of Chicago, 5841 S. Maryland Avenue, MC1028, Chicago, Illinois 60637, USA
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Hrdlicka PJ, Jepsen JS, Nielsen C, Wengel J. Synthesis and biological evaluation of nucleobase-modified analogs of the anticancer compounds 3′-C-ethynyluridine (EUrd) and 3′-C-ethynylcytidine (ECyd). Bioorg Med Chem 2005; 13:1249-60. [PMID: 15670934 DOI: 10.1016/j.bmc.2004.11.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2004] [Accepted: 11/26/2004] [Indexed: 10/26/2022]
Abstract
A series of nucleobase-modified analogs of the anticancer compounds 3'-C-ethynyluridine (EUrd) and 3'-C-ethynylcytidine (ECyd) were designed to overcome the strict substrate specificity of the activating uridine-cytidine kinase. EUrd, ECyd and target nucleosides were obtained using a short convergent synthetic route utilizing diacetone-alpha-D-glucose as starting material. 5-Iodo-substituted EUrd was the most potent inhibitor among the novel nucleobase-modified analogs in in vitro assays against human adenocarcinoma breast and prostate cancer cells with IC50 values down to 35 nM.
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Affiliation(s)
- Patrick J Hrdlicka
- Nucleic Acid Center, Department of Chemistry, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
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Attia AME, El-Shehawy AA. A convenient method for the synthesis of 2-(beta-D-glycopyranosylthio) pyridines. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2004; 22:1737-46. [PMID: 14533878 DOI: 10.1081/ncn-120023269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Treatment of piperidinium salts of dihydropyridinethiolates 3 with glycosyl bromides 4 in dry acetone provides a convenient and high yielding synthesis of 1,4-dihydro-3-cyanopyridine thioglycosides 5. The structures of 5 were confirmed by oxidation as well as by 1H NMR and 13C NMR spectral analysis.
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Affiliation(s)
- Adel M E Attia
- Department of Chemistry, Faculty of Education, University of Tanta (Kafr El-Sheikh Branch), Tanta, Egypt.
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Saladino R, Ciambecchini U, Nencioni L, Palamara AT. Recent advances in the chemistry of parainfluenza-1 (Sendai) virus inhibitors. Med Res Rev 2003; 23:427-55. [PMID: 12710019 DOI: 10.1002/med.10036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Purine and pyrimidine derivatives, antioxidants, fusion inhibitors, statins, prostaglandins, antibiotic nucleosides, inhibitors of Ca(2+) homeostasis, carbohydrate derivatives, antisense polynucleotides and chimeras, are described as inhibitors of parainfluenza-1 (Sendai) viral infections.
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Affiliation(s)
- Raffaele Saladino
- Agrobiological and Agrochemical Department, University of Tuscia, via San Camillo de Lellis snc, 00100, Viterbo, Italy.
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Searls T, McLaughlin LW. Synthesis of the analogue nucleoside 3-deaza-2′-deoxycytidine and its template activity with DNA polymerase. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00703-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Schnell B. Synthesis and reactions of 4-Hydroxy-2(1H)-pyridones with thienyl and pyridyl substituents in position 6 starting with azomethines and malonates. J Heterocycl Chem 1999. [DOI: 10.1002/jhet.5570360234] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Linn JA, Gerritz SW, Handlon AL, Hyman CE, Heyer D. Solid phase synthesis of 1,3,5-trisubstituted pyridin-2-ones. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(98)02628-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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15
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Nolte C, Schäfer G, Reichardt C. Synthesen mit aliphatischen Dialdehyden, XLV. Substituierte Glutaconaldehyd-Derivate durch Vilsmeier-Addition an 1-Methoxy-1-buten-3-in, 1-Methoxy-1-penten-3-in und 1-(Dimethylamino)-1-buten-3-in und deren Reaktionen mit einigen Nucleophilen. ACTA ACUST UNITED AC 1991. [DOI: 10.1002/jlac.199119910121] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hanna NB, Joshi RV, Larson SB, Robins RK, Revankar GR. Synthesis of certain 1-β-D-ribofuranosyl-1,2-dihydro-2-oxopyridines structurally related to nicotinamide ribonucleoside. J Heterocycl Chem 1989. [DOI: 10.1002/jhet.5570260656] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kappe T, Ajili S, Stadlbauer W. Aktive malonester als synthons für heterocyclen: Eine methode zur herstellung von 4-hydroxy-2(1H)-pyridonen. J Heterocycl Chem 1988. [DOI: 10.1002/jhet.5570250221] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mittelbach M, Kastner G, Junek H. Synthesen mit Nitrilen, 71. Mitt. Zur Synthese von 4-Hydroxynicotinsäure aus Butadiendicarbonitrilen. Arch Pharm (Weinheim) 1985. [DOI: 10.1002/ardp.19853180602] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Watanabe KA, Reichman U, Fox JJ, Chou TC. Nucleosides. CXIX. Substrate specificity and mechanism of action of cytidine deaminases of monkey plasma and mouse kidney. Chem Biol Interact 1981; 37:41-54. [PMID: 7285246 DOI: 10.1016/0009-2797(81)90164-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Kohler P, Wachtl M, Tamm C. Nucleoside und Nucleotide. Teil 15. Synthese von Desoxyribonucleosid-monophosphaten und -triphosphaten mit 2(1H)-Pyrimidinon, 2(1H)-Pyridinon und 4-Amino-2(1H)-pyridinon als Basen. Helv Chim Acta 1980. [DOI: 10.1002/hlca.19800630842] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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