Results 41 to 50 of about 171,665 (294)

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

Biological Catalysis and Information Storage Have Relied on N-Glycosyl Derivatives of β-D-Ribofuranose since the Origins of Life

open access: yesBiomolecules, 2023
Most naturally occurring nucleotides and nucleosides are N-glycosyl derivatives of β-d-ribose. These N-ribosides are involved in most metabolic processes that occur in cells.
Katarzyna Wozniak, Krzysztof Brzezinski
doaj   +1 more source

Role of Nucleoside Transporters in Nucleoside-Derived Drug Sensitivity

open access: yesNucleosides, Nucleotides and Nucleic Acids, 2010
Nucleoside-derived drugs are currently used clinically as anticancer drugs. To exert their pharmacological action first they need to enter into the cell across plasma membrane transporters and be metabolized. Thus, efficacy of treatment and acquisition of resistance can rely on a variety of events.
Miriam Molina-Arcas   +1 more
openaire   +5 more sources

Synthetic Hydrogels Incorporating Hydrolytic/Nonhydrolytic Macromer Ratios Exhibit Improved Tunability of In Vivo Degradation and Immune Responses

open access: yesAdvanced Healthcare Materials, EarlyView.
A synthetic 4‐arm maleimide‐terminated poly(ethylene glycol) (PEG‐4MAL) hydrogel system that combines hydrolytic ester‐linked macromer (PEG‐4eMAL) with nondegradable amide‐linked macromer (PEG‐4aMAL) in various stoichiometric ratios to tune the degradability rate. The macromers are crosslinked with dithiothreitol via thiol‐maleimide click reaction. The
Michael D. Hunckler   +7 more
wiley   +1 more source

Synthesis of C-Arylnucleoside Analogues

open access: yesMolecules, 2015
Modified nucleoside analogues are of great biological importance as antiviral and antitumoral agents. There is special interest in the preparation of C-aryl nucleosides with an aromatic ring in different positions of the glycone for their biological ...
Christophe Len, Gérald Enderlin
doaj   +1 more source

Thiolated Hyaluronic Acid: A Gateway for Targeted Killing of Staphylococcus aureus on the Race for Surface Colonization

open access: yesAdvanced Healthcare Materials, EarlyView.
Thiolated hyaluronic acid (HAMS) synthesized and characterized by NMR, solubility, thiol content, and pKa, is degraded by Staphylococcal hyaluronate lyase but not by mammalian hyaluronidase. Coating polyphosphate–M23 phage endolysin nanoparticles (M23‐PP) with HAMS confers Staphylococcus aureus responsiveness.
Mariana Blanco Massani   +11 more
wiley   +1 more source

Glycosylation reactions mediated by hypervalent iodine: application to the synthesis of nucleosides and carbohydrates

open access: yesBeilstein Journal of Organic Chemistry, 2018
To synthesize nucleoside and oligosaccharide derivatives, we often use a glycosylation reaction to form a glycoside bond. Coupling reactions between a nucleobase and a sugar donor in the former case, and the reaction between an acceptor and a sugar donor
Yuichi Yoshimura   +4 more
doaj   +1 more source

Functional Characterization of the Saccharomyces cerevisiae Equilibrative Nucleoside Transporter 1 (ScENT1)

open access: yesMolecules, 2018
Equilibrative nucleoside transporters (ENTs) are polytopic membrane transporters responsible for the translocation of nucleosides, nucleobases—to a lesser extent—and nucleoside analog therapeutics across cellular membranes.
Rebba C. Boswell-Casteel   +2 more
doaj   +1 more source

Light‐Harvesting Nanomaterials Based on Dyes for Energy Transfer and Amplified Biosensing

open access: yesAdvanced Materials, EarlyView.
Light harvesting (LH) in plants inspires researchers to develop artificial LH nanomaterials. Here, LH nanomaterials based on organic dyes are reviewed, considering fundamental challenges on aggregation‐caused quenching, excitation energy transfer, and exciton migration length.
Andrey S. Klymchenko   +2 more
wiley   +1 more source

Nucleophilic displacement reactions of 5′-derivatised nucleosides in a vibration ball mill

open access: yesBeilstein Journal of Organic Chemistry, 2017
Vibration ball-milling in a zirconia-lined vessel afforded clean and quantitative nucleophilic displacement reactions between 4-methoxybenzylthiolate salts and nucleoside 5′-halides or 5′-tosylates in five to 60 minutes.
Olga Eguaogie   +8 more
doaj   +1 more source

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