Potency and pharmacokinetics of GS-441524 derivatives against SARS-CoV-2.
Bioorg Med Chem
; 46: 116364, 2021 09 15.
Article
in English
| MEDLINE | ID: covidwho-1406212
ABSTRACT
The nucleoside metabolite of remdesivir, GS-441524 displays potent anti-SARS-CoV-2 efficacy, and is being evaluated in clinical as an oral antiviral therapeutic for COVID-19. However, this nucleoside has a poor oral bioavailability in non-human primates, which may affect its therapeutic efficacy. Herein, we reported a variety of GS-441524 analogs with modifications on the base or the sugar moiety, as well as some prodrug forms, including five isobutyryl esters, two l-valine esters, and one carbamate. Among the new nucleosides, only the 7-fluoro analog 3c had moderate anti-SARS-CoV-2 activity, and its phosphoramidate prodrug 7 exhibited reduced activity in Vero E6 cells. As for the prodrugs, the 3'-isobutyryl ester 5a, the 5'-isobutyryl ester 5c, and the tri-isobutyryl ester 5g hydrobromide showed excellent oral bioavailabilities (F = 71.6%, 86.6% and 98.7%, respectively) in mice, which provided good insight into the pharmacokinetic optimization of GS-441524.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Antiviral Agents
/
Adenosine
/
SARS-CoV-2
Type of study:
Experimental Studies
/
Prognostic study
Limits:
Animals
Language:
English
Journal:
Bioorg Med Chem
Journal subject:
Biochemistry
/
Chemistry
Year:
2021
Document Type:
Article
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