Used as a key chiral intermediate in the synthesis of antiviral drugs, particularly in the production of hepatitis C virus (HCV) protease inhibitors. Its structural features enable high selectivity and binding affinity in pharmaceutical agents targeting viral replication. The compound's stereochemistry plays a critical role in enhancing drug efficacy and metabolic stability. It is also employed in the development of other biologically active molecules where a constrained cyclic ether and amino acid functionality are required for activity.