Results 31 to 40 of about 42,345 (197)

Nucleosided derived antibiotics to fight microbial drug resistance: New utilities for an established class of drugs? [PDF]

open access: yes, 2016
Novel antibiotics are urgently needed to combat the rise of infections due to drug-resistant microorganisms. Numerous natural nucleosides and their synthetically modified analogues have been reported to have moderate to good antibiotic activity against ...
Ferrari, Valentina   +2 more
core   +1 more source

Analogues of Muraymycin Nucleoside Antibiotics with Epimeric Uridine-Derived Core Structures

open access: yesMolecules, 2018
Nucleoside analogues have found widespread application as antiviral and antitumor agents, but not yet as antibacterials. Naturally occurring uridine-derived ‘nucleoside antibiotics’ target the bacterial membrane protein MraY, an enzyme ...
Anatol P. Spork   +4 more
doaj   +1 more source

Exploration of factors driving incorporation of unnatural dNTPS into DNA by Klenow fragment (DNA polymerase I) and DNA polymerase {alpha} [PDF]

open access: yes, 2006
In order to further understand how DNA polymerases discriminate against incorrect dNTPs, we synthesized two sets of dNTP analogues and tested them as substrates for DNA polymerase a (pol alpha) and Klenow fragment (exo-) of DNA polymerase I (Escherichia ...
Kincaid, Kristi   +5 more
core   +1 more source

Synthesis of 1,4-Disubstituted Mono and Bis-triazolocarbo-acyclonucleoside Analogues of 9-(4-Hydroxybutyl)guanine by Cu(I)-Catalyzed Click Azide-Alkyne Cycloaddition [PDF]

open access: yes, 2011
A series of novel mono-1,2,3-triazole and bis-1,2,3-triazole acyclonucleoside analogues of 9-(4-hydroxybutyl)guanine was prepared via copper(I)-catalyzed 1,3-dipolar cycloaddition of N-9 propargylpurine, N-1-propargylpyrimidines/as-triazine with the ...
Engels, Joachim W.   +2 more
core   +2 more sources

Photochemical Synthesis of Nucleoside Analogues from Cyclobutanones: Bicyclic and Isonucleosides

open access: yesMolecules, 2010
The preparation of two nucleoside analogues are reported. Both syntheses involve a key photochemical ring-expansion of cyclobutanones to an oxacarbene and its subsequent scavenging by 6-chloropurine.
Mileina Jaffer   +2 more
doaj   +1 more source

Polyphosphate Nucleosides of Purine Analogues

open access: yesJournal of Biological Chemistry, 1959
(Received for publication, November 17, 1958) To test the hypothesis that carcinostatic purine and pyrimi- dine analogues exert their effects at the nucleotide level, we have undertaken the preparation and study of nucleotides, including coenzymes, which contain analogues in place of the natural bases.
J L, WAY, J L, DAHL, R E, PARKS
openaire   +2 more sources

Probing the Effects of Pyrimidine Functional Group Switches on Acyclic Fleximer Analogues for Antiviral Activity

open access: yesMolecules, 2019
Due to their ability to inhibit viral DNA or RNA replication, nucleoside analogues have been used for decades as potent antiviral therapeutics. However, one of the major limitations of nucleoside analogues is the development of antiviral resistance.
Mary K. Yates   +7 more
doaj   +1 more source

Focus on chirality of HIV-​1 non-​nucleoside reverse transcriptase inhibitors [PDF]

open access: yes, 2016
Chiral HIV-1 non-nucleoside reverse transcriptase inhibitors (NNRTIs) are of great interest since one enantiomer is often more potent than the corresponding counterpart against the HIV-1 wild type (WT) and the HIV-1 drug resistant mutant strains.
Famiglini, Valeria, Silvestri, Romano
core   +2 more sources

Dye-sensitized Photooxygenation of furanosyl Furans; Synthesis of a new Pyridazine C-Nucleoside [PDF]

open access: yes, 2005
The dye-sensitized photooxygenation of furanosyl furans easily affords C- or O-glycosides with cis-R,-unsaturated 1,4-dioxo aglycones. The reaction, performed on a ribofuranosyl furan, provides a useful new entry to a novel pyridazine C-nucleoside that ...
CERMOLA, FLAVIO   +2 more
core   +1 more source

Evaluation of antivirals against tick-borne encephalitis virus in organotypic brain slices of rat cerebellum. [PDF]

open access: yesPLoS ONE, 2018
Neurotropic tick borne encephalitis virus (TBEV) causes life-threatening disease, and accounts for most cases of tick-transmitted viral infections in Central and Eastern Europe and Russia. No specific treatment for TBEV infections exists, and vaccination
Nicole Lenz   +4 more
doaj   +1 more source

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