Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of bioactive molecules and drug candidates. Its spirocyclic structure and functional groups make it valuable for constructing complex heterocyclic systems found in medicinal chemistry. The tert-butoxycarbonyl (Boc) group allows for controlled amine protection during peptide coupling or multistep syntheses. The carboxylic acid moiety enables further derivatization, such as amide bond formation or esterification, facilitating the creation of diverse compound libraries for biological screening. Commonly employed in research settings for designing central nervous system agents and enzyme inhibitors.