Used as a chiral auxiliary in asymmetric synthesis, enabling the selective formation of stereocenters in complex organic molecules. It is particularly effective in enantioselective alkylation and aldol reactions, where it controls the spatial arrangement of atoms during bond formation. Its rigid oxazolidinone ring and defined stereochemistry make it valuable in pharmaceutical synthesis for producing single-enantiomer compounds. After serving its directing role, it can be cleaved under mild conditions without disrupting the newly formed chiral centers. Widely applied in the preparation of bioactive molecules, including antibiotics and protease inhibitors.