Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. 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 central nervous system disorders, antiviral agents, and peptidomimetics. Also utilized in asymmetric synthesis and catalysis due to its stereogenic center.