Used as a key intermediate in the synthesis of antiviral agents, particularly NS5A inhibitors for hepatitis C virus (HCV). It contributes to the formation of structurally complex molecules that target the NS5A viral replication protein, enhancing the potency and selectivity of the final drug compounds. Its chiral center plays a critical role in biological activity, making it valuable in asymmetric synthesis for pharmaceuticals. This intermediate supports the development of new-generation HCV treatments with improved efficacy and reduced side effects compared to earlier therapies.