Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its hydroxyl and protected amine functionalities allow for sequential functionalization, making it valuable in constructing complex molecules such as kinase inhibitors, antiviral agents, and central nervous system therapeutics. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid pyrrolidine scaffold and defined stereochemistry.