Used as an intermediate in the synthesis of biologically active compounds, particularly in the development of pharmaceuticals targeting central nervous system disorders. Its rigid adamantane backbone enhances lipophilicity and metabolic stability, making it valuable in peptidomimetic design. Commonly employed in solid-phase peptide synthesis to introduce constrained amino acid motifs. Also utilized in the preparation of protease inhibitors and receptor modulators due to its ability to mimic natural amino acids while improving binding selectivity and resistance to enzymatic degradation.