10-Deacetylbaccatin III, an important semisynthetic precursor of paclitaxel and docetaxel, can be extracted from Taxus wallichiana Zucc. A process for the isolation and purification of 10-deacetylbaccatin III (1), baccatin III (2), and 7β-xylosyl-10-deacetyltaxol (3) from the leaves and branches of