Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and antiviral agents. Its protected amine and chiral pyrrolidine structure make it valuable in asymmetric synthesis and drug design where stereochemistry is critical. Commonly employed in the preparation of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Also utilized in the construction of peptidomimetics and other bioactive molecules in medicinal chemistry research.