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 for constructing complex nitrogen-containing compounds. Commonly employed in medicinal chemistry for the preparation of kinase inhibitors, receptor modulators, and other therapeutic agents where rigid, three-dimensional scaffolds enhance binding selectivity and metabolic stability. The tert-butyl carbamate (Boc) group allows for selective deprotection and further functionalization during multi-step syntheses.