Used in the synthesis of protease inhibitors, particularly in the development of antiviral agents targeting hepatitis C virus (HCV). It serves as a chiral building block for constructing complex molecules with high stereoselectivity, enabling efficient production of active pharmaceutical ingredients (APIs). Its structural features allow for strong binding interactions with enzyme active sites, improving drug potency and selectivity. Commonly employed in late-stage intermediates for clinical candidates in anti-infective drug discovery programs.