Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. The Boc-protected pyrrolidine nitrogen allows the free amine and hydroxyl groups to be selectively functionalized, making it valuable in asymmetric synthesis. Commonly employed in drug discovery for central nervous system agents, antiviral compounds, and other therapeutics due to its structural rigidity and stereochemical purity.