4 research outputs found
Inhibition of the RNA-dependent RNA-polymerase from SARS-CoV-2 by 6-chloropurine isoxazoline-carbocyclic monophosphate nucleotides
Isoxazoline-carbocyclic monophosphate nucleotides were designed and synthesized through the chemistry of nitrosocarbonyl intermediates and stable anthracenenitrile oxide. Docking and molecular dynamics studies were first conducted for determining the best candidate for polymerase SARS-CoV-2 inhibition. The setup phosphorylation protocol afforded the nucleotides available for the biological tests. Preliminary inhibition and cytotoxicity assays were then performed, and the results showed a moderate activity of the nucleotides accompanied by cytotoxicity
Synthesis and biological activity of potential antiviral compounds through 1,3-dipolar cycloadditions; Part 1: general aspects and reactions of azides
Reactions of 1,2,4‐Oxadiazole[4,5‐a]piridinium Salts with Alcohols: the Synthesis of Alkoxybutadienyl 1,2,4‐Oxadiazoles
1,2,4-Oxadiazole[4,5-a]piridinium salts add alcohols and alkoxides
to undergo electrocyclic ring opening affording alkoxybutadienyl
1,2,4-oxadiazole derivatives. The pyridinium salts
represent a special class of Zincke salts that are prone to
rearrange to give alkoxybutadienyl 1,2,4-oxadiazoles when
treated with suitable nucleophiles or, alternatively, to give
pyridones in the presence of bicarbonate. The pivotal tuning of
the experimental conditions leads to a straightforward synthesis
of valuable 1,2,4-oxadiazole derivatives. The mechanism is also
discussed in the light of previous observations
Turn-folding in fluorescent anthracene-substituted cyclopenta[d]isoxazoline short peptides
Cyclopenta[d]isoxazoline aminols were used for the synthesis of b-turn mimics. The peptide chain choice
ascertained the influence of their structural features on the applicability/reliability/robustness of these
scaffolds as b-turn inducers and their limitations. The amino acid selection as well as steric demands can
favor or disfavor the structure folding and the correct design of the peptide chains deeply influences the
potential use of these nitrosocarbonyl-based compounds as turn-inducers