Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other bioactive molecules. Its fluorinated pyrrolidine structure enhances metabolic stability and binding affinity in drug candidates. Commonly employed in asymmetric synthesis to introduce stereochemical control, especially in the preparation of antiviral and anticancer agents. The tert-butyl and methyl ester groups allow for selective deprotection and further functionalization, making it valuable in multi-step organic synthesis.