Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Its protected amine and hydroxyl functionalities make it valuable in multi-step organic syntheses, especially for central nervous system agents, antiviral drugs, and enzyme inhibitors. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid pyrrolidine scaffold and stereochemical stability. Also utilized in asymmetric synthesis and catalysis as a precursor to chiral ligands or organocatalysts.