Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other bioactive molecules. Its spirocyclic structure and functional groups make it valuable for constructing complex heterocyclic compounds with high selectivity and potency. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies, it helps optimize drug candidates targeting neurological disorders, inflammation, and cancer. The Boc-protected amine and carboxylic acid allow for straightforward coupling and deprotection steps in peptide-like synthesis, enabling efficient exploration of molecular diversity.