Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of β-lactam antibiotics. It facilitates stereocontrol during carbon-carbon bond formation, enabling the efficient synthesis of optically active intermediates. Commonly employed in the pharmaceutical industry for the production of penem and carbapenem class antibiotics due to its ability to direct stereoselective alkylation reactions. Also utilized in peptide mimetic synthesis where preservation of chirality is critical. Its cyclic structure and activating groups allow for selective transformations and easy removal under mild conditions, making it valuable in multi-step synthetic routes.