Used as a chiral intermediate in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors. Its structure supports the formation of thioamide derivatives, which are valuable in drug design for enhancing metabolic stability and binding affinity. Commonly employed in asymmetric synthesis due to the presence of a stereogenic center, enabling the production of enantiomerically pure compounds. Also utilized in the preparation of enzyme inhibitors where the pyrrolidine ring acts as a proline mimic in peptide-based therapeutics.