Intermediates**: -The research identifies several new intermediates within the Taxol biosynthetic pathway, including compounds 6, 7, and 10, which had not been previously reported. These discoveries fill critical gaps in the understanding of how Taxol is assembled at the molecular level. -The study also confirms that intermediates like 9,10-deacetyl taxusin and taxusin are crucial in the pathway leading to the final formation of the tetracyclic core skeleton.