Used as an intermediate in the synthesis of antiviral medications, particularly nucleoside analogs. It plays a key role in creating modified sugar moieties that mimic natural nucleosides, allowing incorporation into viral RNA or DNA to inhibit replication. Commonly applied in the development of drugs targeting viruses, including certain herpesviruses and hepatitis viruses. Its stereochemistry enables high selectivity and efficacy in prodrug formulations. Also utilized in research for novel antiviral candidates and in optimizing drug delivery through esterification strategies.