Journal : J Med Chem
Title : Synthesis and Biological Characterization of Aryl Uracil Inhibitors of Hepatitis C Virus NS5B Polymerase: Discovery of ABT-072, a trans-Stilbene Analog with Good Oral Bioavailability.
Year : 2018
Volume : 61
Issue : 3
First Page : 1153
Last Page : 1163
Authors : Randolph JT, Krueger AC, Donner PL, Pratt JK, Liu D, Motter CE, Rockway TW, Tufano MD, Wagner R, Lim HB, Beyer JM, Mondal R, Panchal NS, Colletti L, Liu Y, Koev G, Kati WM, Hernandez LE, Beno DWA, Longenecker KL, Stewart KD, Dumas EO, Molla A, Maring CJ.
Abstract : ABT-072 is a non-nucleoside HCV NS5B polymerase inhibitor that was discovered as part of a program to identify new direct-acting antivirals (DAAs) for the treatment of HCV infection. This compound was identified during a medicinal chemistry effort to improve on an original lead, inhibitor 1, which we described in a previous publication. Replacement of the amide linkage in 1 with a trans-olefin resulted in improved compound permeability and solubility and provided much better pharmacokinetic properties in preclinical species. Replacement of the dihydrouracil in 1 with an N-linked uracil provided better potency in the genotype 1 replicon assay. Results from phase 1 clinical studies supported once-daily oral dosing with ABT-072 in HCV infected patients. A phase 2 clinical study that combined ABT-072 with the HCV protease inhibitor ABT-450 provided a sustained virologic response at 24 weeks after dosing (SVR24) in 10 of 11 patients who received treatment.