Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other bioactive molecules. Its spirocyclic structure with a protected amine (Boc group) allows for selective functionalization, making it valuable in medicinal chemistry for building complex heterocyclic compounds. Commonly employed in drug discovery programs to introduce constrained diamine motifs that enhance metabolic stability and binding affinity. Also utilized in the preparation of novel ligands for receptors in neurological research.