Used as a key intermediate in the semi-synthesis of paclitaxel (taxol), a potent anticancer drug. It is derived from natural precursors in yew species and enables more efficient production of taxol compared to direct extraction. Its structure allows selective chemical modifications to introduce functional groups necessary for antitumor activity. Widely utilized in pharmaceutical research to develop new taxane-based chemotherapeutics with improved solubility and efficacy against drug-resistant cancers.