Used as an intermediate in the synthesis of antiviral agents, particularly in the development of nucleotide analogs. It serves as a chiral building block for constructing phosphoramidate prodrugs, which enhance cellular uptake and metabolic activation of therapeutic compounds. Commonly applied in the preparation of hepatitis C and other RNA virus treatments, where it helps improve bioavailability and target specificity of active drug molecules. Its stereochemistry supports selective enzymatic processing, making it valuable in medicinal chemistry for optimizing drug efficacy and reducing off-target effects.