Used as a chiral building block in the synthesis of pharmaceutical intermediates, particularly in the development of protease inhibitors and antiviral agents. Its pyrimidine-containing structure makes it valuable in medicinal chemistry for constructing biologically active molecules. Commonly employed in peptide mimetic design due to the amino acid-like framework, enabling incorporation into complex organic molecules where stereochemistry is critical for activity. Also utilized in solid-phase and solution-phase peptide synthesis when protected functional groups are required.