Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules requiring stereochemical control. Its spirocyclic structure and protected amine functionalities make it valuable in medicinal chemistry for constructing complex amines and heterocycles. Commonly employed in asymmetric synthesis and as an intermediate in the preparation of kinase inhibitors and central nervous system agents. The tert-butoxycarbonyl (Boc) protection allows for selective deprotection and further functionalization in multi-step reactions.