Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where stereochemistry plays a critical role. Its rigid pyrrolidine ring structure makes it valuable in medicinal chemistry for designing enzyme inhibitors and receptor modulators. Commonly employed in the production of drugs targeting neurological disorders, antiviral agents, and peptidomimetics due to its ability to enhance metabolic stability and bioavailability. Also utilized in asymmetric synthesis and catalysis as a precursor for organocatalysts.