Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its structure supports the creation of biologically active molecules, especially in central nervous system agents and enzyme inhibitors. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its rigid, substituted pyrrolidine core. Also utilized in asymmetric synthesis and catalysis as a precursor to chiral ligands or organocatalysts.