Used in peptide synthesis as a protected amino acid derivative, particularly in the preparation of complex peptides where stereochemical control is required. The Boc (tert-butoxycarbonyl) group provides amine protection during coupling steps, while the D-configuration and N-methylation help modulate peptide conformation, enhance metabolic stability, and improve bioavailability. Commonly employed in research settings for developing peptidomimetics and bioactive compounds, especially in pharmaceutical and medicinal chemistry applications.