Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceutical research targeting central nervous system disorders. Its spirocyclic structure and functional groups make it valuable for developing modulators of neurotransmitter receptors. It is also employed in the preparation of enzyme inhibitors, where the tosyl group facilitates further derivatization. Due to its rigid framework, it helps improve metabolic stability and selectivity in drug candidates. Additionally, it serves as a building block in combinatorial chemistry for generating novel heterocyclic compounds with potential therapeutic applications.