Used as a key intermediate in the synthesis of paclitaxel (Taxol), a potent anticancer drug. It plays a critical role in constructing the ester side chain essential for Taxol’s biological activity. This compound enables efficient semisynthesis of Taxol and its analogs, supporting large-scale production for chemotherapy treatments, particularly in ovarian, breast, and lung cancers. Its stereochemistry is crucial for maintaining the drug’s ability to stabilize microtubules and inhibit cell division.