Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and antiviral agents. Its rigid pyrrolidine structure with defined stereochemistry makes it valuable for designing drugs that require high selectivity and binding affinity. Commonly employed in medicinal chemistry for structure-activity relationship studies, especially in targets involving peptidomerase enzymes. Also utilized in the preparation of cyclic peptides and peptidomimetics due to its ability to induce specific conformational constraints.