Used as an intermediate in the synthesis of protease inhibitors, particularly in the development of antiviral drugs. Its structure supports the formation of peptide-like chains that mimic natural substrates, enhancing binding affinity to enzyme active sites. Commonly employed in medicinal chemistry for constructing complex molecules with biological activity, especially in HIV and hepatitis C drug research. The tetrahydropyranyl group acts as a protecting group, allowing selective reactions during multi-step syntheses.