Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of bioactive molecules requiring stereochemical control. Its hydroxyl and protected carboxylate groups allow for selective transformations, making it valuable in multi-step organic syntheses. Commonly employed in the preparation of enzyme inhibitors and central nervous system agents due to the piperidine scaffold’s prevalence in neuroactive compounds. The tert-butyl and ethyl ester groups facilitate purification and stability during synthesis, and can be deprotected under mild conditions to reveal active intermediates.