Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of biologically active compounds where stereochemistry plays a critical role. Its protected pyrrolidine structure makes it valuable in asymmetric synthesis and peptidomimetic drug design. Commonly employed in the preparation of protease inhibitors and other enzyme-targeted therapeutics. The tert-butyl and benzyl protecting groups allow selective deprotection and functionalization, enabling stepwise construction of complex molecules in medicinal chemistry research.