Used as a key chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its protected amine group and pyrrolidine scaffold make it valuable in constructing complex molecules for drug discovery, especially in central nervous system agents, antiviral drugs, and protease inhibitors. The Boc-protected amine allows for selective deprotection and further functionalization in multi-step organic syntheses, offering flexibility and high enantiomeric purity in final products.