Used as a chiral auxiliary in asymmetric synthesis, particularly in the preparation of enantiomerically pure sulfonamides and amino derivatives. Its rigid cyclic structure and stereochemical stability make it valuable for controlling stereochemistry during carbon–carbon bond formation. Commonly employed in pharmaceutical intermediates synthesis where high enantioselectivity is required. The tert-butyl carbamate-protected structure allows for selective deprotection and further functionalization in multi-step synthetic routes.