Used as a key chiral intermediate in the synthesis of protease inhibitors, particularly in the development of antiviral agents such as hepatitis C virus (HCV) NS3/4A protease inhibitors. Its rigid bicyclic structure and multiple stereocenters allow for high selectivity in asymmetric synthesis. The Boc and silyl protecting groups enable stepwise functionalization, making it valuable in multi-step pharmaceutical syntheses where controlled reactivity and stereochemical integrity are critical.