Vinblastine(长春碱) and vincristine (长春新碱), from Vinca rosea, exhibited antitumor capabilities Paclitaxel(taxol), from an extract of the pacific yew〔紫杉)tree, is usec n the treatment of ovarian cancer• Vinblastine （长春碱） and vincristine （ 长 春 新 碱 ） , from Vinca rosea, exhibited antitumor capabilities. • Paclitaxel (Taxol), from an extract of the Pacific yew （紫杉）tree, is used in the treatment of ovarian cancer