Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of peptidomimetics and protease inhibitors. Its structure incorporates a seven-membered nitrogen ring, which can enhance metabolic stability and influence conformational flexibility in drug candidates. Commonly employed in solid-phase peptide synthesis due to the presence of the Fmoc group, allowing for selective deprotection under mild basic conditions. Valuable in medicinal chemistry for structure-activity relationship studies where ring size and stereochemistry impact biological activity.