Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of protease inhibitors and other biologically active compounds. Its cyclopropane structure with defined stereochemistry allows for rigid conformation in drug design, enhancing selectivity and metabolic stability. Commonly employed in peptide mimetics and as an intermediate in the preparation of antiviral and anticancer agents. The Boc-protected amine group enables easy incorporation into larger molecular frameworks using standard coupling techniques in organic synthesis.