Used in pharmaceutical synthesis as an intermediate for developing bioactive molecules, particularly in the production of nitrogen-containing heterocyclic compounds. Its spirocyclic structure and functional groups make it valuable for constructing complex scaffolds in drug discovery. Commonly employed in coupling reactions to introduce the spiro moiety into target molecules, especially in central nervous system agents and enzyme inhibitors. The tert-butyl carbamate (Boc) group allows for protection of the amine during multi-step syntheses, enabling selective reactivity. Also utilized in the development of novel receptor ligands due to its conformational rigidity and stability.