Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules and drug candidates requiring stereochemical control. Its protected amine functionality and defined stereochemistry make it valuable in peptide mimetics and protease inhibitor design. Commonly employed in medicinal chemistry for constructing complex heterocyclic systems where regio- and stereoselectivity are critical. Also utilized in asymmetric synthesis and as an intermediate in the preparation of kinase inhibitors and central nervous system agents.