Used as an intermediate in pharmaceutical synthesis, particularly in the development of bioactive molecules and drug candidates. Its spirocyclic structure and protected amine functionalities make it valuable in medicinal chemistry for constructing complex amines and heterocycles. Commonly employed in the preparation of kinase inhibitors and central nervous system agents. The tert-butyl carbamate (Boc) group allows for selective deprotection, enabling stepwise synthesis in multi-step reactions. Also utilized in the design of novel receptor ligands due to its rigid three-dimensional framework.