Used as a chiral intermediate in the synthesis of pharmaceuticals, particularly in the development of biologically active compounds where stereochemistry plays a critical role. Its protected hydroxyl and carboxylate groups allow for selective transformations, making it valuable in multi-step organic syntheses. Commonly employed in the preparation of protease inhibitors and other therapeutic agents requiring high enantiomeric purity. The tert-butyl and methyl ester groups facilitate easy deprotection under mild conditions, enabling efficient downstream processing in drug manufacturing.