Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of beta-lactamase inhibitors and certain antiviral agents. Its rigid bicyclic [2.2.1]heptane structure with oxa-aza functionality and the tert-butyl carboxylate group make it valuable for constructing stereochemically defined heterocycles. The carboxylate acts as a protecting group for the nitrogen, facilitating selective reactions and easy deprotection in later stages. Commonly employed in medicinal chemistry for ring-opening and nucleophilic substitution reactions to introduce nitrogen-containing moieties into complex molecules. Also utilized in the preparation of protease inhibitors and other bioactive compounds requiring precise 3D architecture.