GS441524 trisisobutyryl ester

GS-441524tris-isobutyryl ester is a prodrug form of the antiviral nucleoside analog and remdesivir metabolite GS-441524 .1It reduces the cytopathic effect of respiratory syncytial virus (RSV) in infected HEp-2 cells with an EC50value of 0.26 μM. 1.Mackman, R.L., Hui, H.C., Perron, M., et al.Prodrugs of a 1’-CN-4-aza-7,9-dideazaadenosine C-nucleoside leading to the discovery of remdesivir (GS-5734) as a potent inhibitor of respiratory syncytial virus with efficacy in the african green monkey model of RSVJ. Med. Chem.64(8)5001-5017(2021)

GS-441524 是 Remdesivir 的主要活性代谢物，活性更优于 Remdesivir ，治疗患有自然发生的猫传染性腹膜炎的猫。

GS-441524 is a potent inhibitor of feline infectious peritonitis (FIP) virus with an EC50 of 0.78 μM.. GS-441524 strongly inhibits feline infectious peritonitis (FIP) virus in tissue culture and experimental cat infection studies. GS-441524 is a molecular precursor to a pharmacologically active nucleoside triphosphate molecule. These analogs act as an alternative substrate and RNA-chain terminator of viral RNA dependent RNA polymerase. GS-441524 was non-toxic in feline cells at concentrations as high as 100 uM and effectively inhibited FIPV replication in cultured CRFK cells and in naturally infected feline peritoneal macrophages at concentrations as low as 1 uM. Note: GS-441524 is an active metabolite of Remdesivir.