Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of protease inhibitors and other biologically active molecules. Its protected functional groups allow selective reactions in multi-step organic syntheses, especially in peptide and peptidomimetic construction. The tert-butyl ester and BOC-protected amine provide stability and solubility in organic solvents, making it suitable for solid-phase and solution-phase peptide synthesis. Commonly employed in medicinal chemistry for building complex heterocyclic structures with controlled stereochemistry.