Used primarily in pharmaceutical research as a key intermediate in the synthesis of biologically active compounds, particularly those targeting central nervous system disorders. Its spirocyclic structure and functional groups make it valuable for developing novel drug candidates with improved selectivity and metabolic stability. It is also employed in the preparation of kinase inhibitors and receptor modulators due to its ability to mimic peptide-like structures while offering enhanced bioavailability. Additionally, it serves as a building block in medicinal chemistry for structure-activity relationship (SAR) studies, enabling optimization of potency and pharmacokinetic properties in drug discovery programs.