For example, in the 1960's, pharmacology studies showed that a compound from
the Pacific yew, Taxus brevifolia, had anti-cancer properties, but the quantities of the compound were too low for commercial purposes.
In the early 2000s, Danishefsky — who is best known for synthesizing Taxol (paclitaxel), a small - molecule cancer drug derived from
the Pacific yew tree — set his sights on synthesizing EPO that would be identical to that in the body.