Results 51 to 60 of about 193,772 (411)
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]
, 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
Mycology, 2017 Nucleosides and nucleobases are one of the most important indicators of quality control. A sensitive and reliable high performance liquid chromatography-ultraviolet method was applied to analyse 13 nucleosides and nucleobases simultaneously in 15 batches
Wenming Cheng +6 more
doaj +1 more source
Química Nova, 2004 The preparation of 2', 3'-di-O-hexanoyluridine (2) by a Candida antarctica B lipase-catalysed alcoholysis of 2', 3', 5'-tri-O-hexanoyluridine (1) was optimised using an experimental design.
María A. Zinni +3 more
doaj +1 more source
Adding alchemical variables to metadynamics to enhance sampling in free energy calculations [PDF]
, 2022 Performing alchemical transformations, in which one molecular system is nonphysically changed to another system, is a popular approach adopted in performing free energy calculations associated with various biophysical processes, such as protein-ligand binding or the transfer of a molecule between environments.
arxiv +1 more source
Medicinal research reviews (Print), 2017 7‐Deazapurine (pyrrolo[2,3‐d]pyrimidine) nucleosides are important analogues of biogenic purine nucleosides with diverse biological activities. Replacement of the N7 atom with a carbon atom makes the five‐membered ring more electron rich and brings a ...
Pavla Perlíková, Michal Hocek
semanticscholar +1 more source
A nucleobase-centered coarse-grained representation for structure prediction of RNA motifs [PDF]
Nucleic Acids Res. 46, 1674 (2018), 2017 We introduce the SPlit-and-conQueR (SPQR) model, a coarse-grained representation of RNA designed for structure prediction and refinement. In our approach, the representation of a nucleotide consists of a point particle for the phosphate group and an anisotropic particle for the nucleoside.
arxiv +1 more source
Biotransformation of halogenated 2′-deoxyribosides by immobilized lactic acid bacteria [PDF]
, 2012 An efficient and green bioprocess is herein reported to obtain halogenated nucleosides by transglycosylation using immobilized lactic acid bacteria (LAB).
Britos, Claudia Noelia +5 more
core +1 more source
Molecules, 2013 Various forms of purine-nucleoside phosphorylase (PNP) were used as catalysts of enzymatic ribosylation of selected fluorescent 8-azapurines. It was found that the recombinant calf PNP catalyzes ribosylation of 2,6-diamino-8-azapurine in a phosphate-free
Goran Mikleušević +3 more
doaj +1 more source
Molecules, 2016 A green protocol has been applied to synthesize a novel series of 3-cyano-2-(tri-O-acetyl-β-d-arabinopyranosylthio)pyridines in a short reaction time, in higher yields and with simpler operations, when compared with the conventional heating method ...
Ibrahim A. Maghrabi +3 more
doaj +1 more source
Lethal Mutagenesis of Picornaviruses with N-6-Modified Purine Nucleoside Analogues [PDF]
, 2008 RNA viruses exhibit extraordinarily high mutation rates during genome replication. Nonnatural ribonucleosides that can increase the mutation rate of RNA viruses by acting as ambiguous substrates during replication have been explored as antiviral agents ...
Barr, Eric W. +11 more
core +4 more sources