Used as a key intermediate in the synthesis of antiviral agents, particularly in the development of hepatitis C virus (HCV) inhibitors. It plays a role in targeting viral replication by acting as a scaffold in NS5A protein inhibitors, which are critical components in direct-acting antiviral regimens. Its structure enables high potency and selectivity, contributing to improved therapeutic efficacy and resistance profiles in HCV treatment. Also employed in medicinal chemistry research for optimizing drug candidates due to its favorable binding properties and metabolic stability.