Used as a chiral intermediate in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other biologically active molecules. Its structure supports peptide mimetic design, making it valuable in medicinal chemistry for creating drugs with improved metabolic stability and target specificity. Commonly employed in solid-phase and solution-phase peptide synthesis due to the presence of the Boc-protecting group, which allows for controlled deprotection and coupling. Also utilized in the preparation of enzyme inhibitors where the 4-ethoxyphenyl moiety contributes to binding affinity and selectivity.