The present invention relates to hepatitis C virus (HCV) NS3 protease inhibitors containing a spirocyclic moeity, uses of such compounds, and synthesis of such compounds.
A newclass of hepatitis C NS3/4A inhibitors was identified by introducing a novel spirocyclic proline–P2 surrogate onto the P2–P4 macrocyclic core of MK-5172 (grazoprevir). The potency profile of new analogues showed excellent pan-genotypic activity for most compounds. The potency evaluation included the most difficult genotype 3a (EC50 values ≤10 nM) and other key genotype 1b mutants. Molecular modeling