Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of biologically active molecules targeting neurological and psychiatric disorders. Its rigid, polycyclic structure makes it valuable in medicinal chemistry for constructing constrained peptide analogs and small-molecule modulators of central nervous system receptors. The presence of orthogonal protecting groups (Boc and carboxylic acid) allows selective functionalization, enabling efficient coupling in multi-step syntheses. It is especially useful in the preparation of proline-derived scaffolds found in enzyme inhibitors and receptor ligands.