自1992年紫杉醇正式上市以来,这种来源于太平洋红豆杉的新型抗癌药已迅速成为一种畅销世界的抗肿瘤药。然而,紫杉醇必须从红豆杉树皮中提取,而且每公斤树皮仅能提取0.1g紫杉醇粗品。红豆杉是一种生长速度极其缓慢的树种,尤其是太平洋红豆杉(生长于美国俄勒岗州)需要百年才能长? Since paclitaxel was officially launched in 1992, this new type of anticancer drug derived from Pacific yew has rapidly become a best-selling antitumor drug in the world. However, paclitaxel must be extracted from the bark of the yew, and only 0.1 g of paclitaxel crude can be extracted per kilogram of bark. Taxus chinensis is a tree species that grows extremely slowly, especially when Pacific yew (grown in Oregon, USA) takes a hundred years to grow.