Results 41 to 50 of about 197,362 (384)

Structural basis of nucleoside and nucleoside drug selectivity by concentrative nucleoside transporters

open access: yeseLife, 2014
Concentrative nucleoside transporters (CNTs) are responsible for cellular entry of nucleosides, which serve as precursors to nucleic acids and act as signaling molecules. CNTs also play a crucial role in the uptake of nucleoside-derived drugs, including anticancer and antiviral agents.
Minhee Lee   +6 more
openaire   +4 more sources

Recent advances in synthetic approaches for medicinal chemistry of C-nucleosides

open access: yesBeilstein Journal of Organic Chemistry, 2018
C-nucleosides have intrigued biologists and medicinal chemists since their discovery in 1950's. In that regard, C-nucleosides and their synthetic analogues have resulted in promising leads in drug design. Concurrently, advances in chemical syntheses have
Kartik W Temburnikar, K. Seley‐Radtke
semanticscholar   +1 more source

Pyrrolo[2,3‐d]pyrimidine (7‐deazapurine) as a privileged scaffold in design of antitumor and antiviral nucleosides

open access: yesMedicinal 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

Nucleosides 8 [18]: Ribosylation of Fused Quinazolines—Synthesis of New [1,2,4]Triazolo[5,1-b]- and [1,2,4]Triazino[3,2-b]quinazoline Nucleosides of Fluorescence Interest

open access: yesJournal of Chemistry, 2013
[1,2,4]Triazolo[5,1-b]- and [1,2,4]triazino[3,2-b] quinazolines have been ribosylated by coupling with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose and by using the silylation method, followed by debenzoylation by methanolic sodium methoxide to afford
Laila Mohamed Break   +2 more
doaj   +1 more source

Synthesis and Pharmacological Evaluation of Modified Adenosines Joined to Mono-Functional Platinum Moieties

open access: yesMolecules, 2014
The synthesis of four novel platinum complexes, bearing N6-(6-amino-hexyl)adenosine or a 1,6-di(adenosin-N6-yl)-hexane respectively, as ligands of mono-functional cisplatin or monochloro(ethylendiamine)platinum(II), is reported.
Stefano D'Errico   +10 more
doaj   +1 more source

Dinucleoside polyphosphates : newly detected uraemic compounds with an impact on leucocyte oxidative burst [PDF]

open access: yes, 2009
Background. Dinucleoside polyphosphates (NpnN) have pathophysiologic roles in cardiovascular disease and are newly detected uraemic retention solutes. They were retrieved in human plasma, tissues and cells.
Dhondt, Annemieke   +5 more
core   +1 more source

Trypanosoma brucei methylthioadenosine phosphorylase protects the parasite from the antitrypanosomal effect of deoxyadenosine [PDF]

open access: yes, 2016
Trypanosoma brucei causes African sleeping sickness for which no vaccine exists and available treatments are of limited use due to their high toxicity or lack of efficacy. T.
de Koning, Harry P.   +4 more
core   +1 more source

Effect of genotype on duodenal expression of nutrient transporter genes in dairy cows [PDF]

open access: yes, 2013
peer-reviewedBackground Studies have shown clear differences between dairy breeds in their feed intake and production efficiencies. The duodenum is critical in the coordination of digestion and absorption of nutrients.
Buckley, Frank   +3 more
core   +1 more source

The Prevailing Catalytic Role of Meteorites in Formamide Prebiotic Processes

open access: yesLife, 2018
Meteorites are consensually considered to be involved in the origin of life on this Planet for several functions and at different levels: (i) as providers of impact energy during their passage through the atmosphere; (ii) as agents of geodynamics ...
Raffaele Saladino   +2 more
doaj   +1 more source

A user-friendly Matlab program and GUI for the pseudorotation analysis of saturated five-membered ring systems based on scalar coupling constants [PDF]

open access: yes, 2008
Background: The advent of combinatorial chemistry has revived the interest in five-membered heterocyclic rings as scaffolds in pharmaceutical research. They are also the target of modifications in nucleic acid chemistry.
Hendrickx, Pieter, Martins, José
core   +4 more sources

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