Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of bioactive molecules targeting central nervous system disorders. Its protected amine group allows for selective functionalization, making it valuable in medicinal chemistry for building complex heterocyclic structures. Commonly employed in the preparation of kinase inhibitors and receptor modulators due to its rigid, fused bicyclic framework that enhances binding selectivity. Also utilized in solid-phase and solution-phase peptide-like synthesis where structural constraint improves metabolic stability.