Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and central nervous system (CNS) agents. Its spirocyclic structure and functional handles allow for selective modifications, making it valuable in medicinal chemistry for optimizing drug potency, selectivity, and metabolic stability. Commonly employed in solid-phase and solution-phase synthesis due to the Boc protecting group, which enables controlled deprotection and coupling steps in multi-step reactions.