1412427-12-3Relevant articles and documents
β-D-2′-C-methyl-2,6-diaminopurine ribonucleoside phosphoramidates are potent and selective inhibitors of hepatitis C virus (HCV) and are bioconverted intracellularly to bioactive 2,6-diaminopurine and guanosine 5′-triphosphate forms
Zhou, Longhu,Zhang, Hong-Wang,Tao, Sijia,Bassit, Leda,Whitaker, Tony,Mcbrayer, Tamara R.,Ehteshami, Maryam,Amiralaei, Sheida,Pradere, Ugo,Cho, Jong Hyun,Amblard, Franck,Bobeck, Drew,Detorio, Mervi,Coats, Steven J.,Schinazi, Raymond F.
, p. 3445 - 3458 (2015/05/05)
The conversion of selected β-d-2,6-diaminopurine nucleosides (DAPNs) to their phosphoramidate prodrug (PD) substantially blocks the conversion to the G-analog allowing for the generation of two bioactive nucleoside triphosphates (NTPs) in human hepatocytes. A variety of 2′-C-methyl DAPN-PDs were prepared and evaluated for inhibition of HCV viral replication in Huh-7 cells, cytotoxicity in various cell lines, and cellular pharmacology in both Huh-7 and primary human liver cells. The DAPN-PDs were pan-genotypic, effective against various HCV resistant mutants, and resistant variants could not be selected. 2′-C-Me-DAPN-TP and 2′-C-Me-GTP were chain terminators for genotype 1b HCV-pol, and single nucleotide incorporation assays revealed that 2′-C-Me-DAPN-TP was incorporated opposite U. No cytotoxicity was observed with our DAPN-PD when tested up to 50 μM. A novel, DAPN-PD, 15c, has been selected for further evaluation because of its good virologic and toxicologic profile and its ability to deliver two active metabolites, potentially simplifying HCV treatment.