Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other biologically active compounds. Its stereochemistry makes it valuable for constructing peptide-like structures with high enantioselectivity. Commonly employed in medicinal chemistry for the preparation of intermediates in drug discovery, especially in the design of enzyme inhibitors where precise spatial arrangement of functional groups is critical. The Boc-protected amine allows for controlled deprotection and coupling in multi-step syntheses.