Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of bioactive molecules targeting central nervous system disorders. Its spirocyclic structure and functional groups allow for selective modifications, making it valuable in medicinal chemistry for building complex heterocyclic systems. Commonly employed in peptide mimetics and protease inhibitor designs due to its conformational rigidity and ability to enhance metabolic stability. Also utilized in research settings for creating novel drug candidates with improved pharmacokinetic profiles.