紫杉醇是从短叶红豆杉的树皮 中分离而得到 的。由于该树是一种生长缓慢的

Paclitaxel is isolated from the bark of Taxus brevifolia. Because the tree is a slow growing shrub, the content of paclitaxel in its bark averages 1.5 parts per ten thousand, and the extraction yield averages one part per ten thousand. Therefore, for experimental and clinical needs, a large amount of felling and peeling of bark will inevitably destroy the natural environment and ecological balance, and will lead to the depletion of resources. Although the taxol precursor baccatin III (baccatin III) was later isolated from the leaves of the yew tree for semi-synthesis of paclitaxel, paclitaxel was still in short supply, limiting the treatment of other cancers. Therefore, in order to increase the source of paclitaxel, countries around the world are stepping up the development and research of paclitaxel and its derivatives. Therefore, the long-term stable and large-scale supply of paclitaxel is a serious challenge faced by scientists from various countries.

Yew alcohol is derived from the separation of the bark of the short-leaf red bean fir. Because the tree is a slow-growing dwarf shrub, the content of yew alcohol in its bark averages one-tenth of a millionth, and the extraction yield averages one-tenth of a millionth. Therefore, for the test and bed needs, a large number of felling, peeling bark, will inevitably destroy the natural environment and ecological balance, and will lead to the depletion of resources. Although later separated from the leaf site of the sequoia to the precursor baccatin III (berry erythromycin III) for semi-synthetic yew alcohol, yew alcohol was still in short supply, limiting the treatment of other cancers. Therefore, in order to increase the source of yew alcohol, countries all over the world are stepping up the development of yew alcohol and its derivatives research. Thus, the long-term stable and large supply of yew alcohol is a serious challenge for scientists in various countries.

Taxol was isolated from the bark of Taxus brevifolius. Because the tree is a slow growing dwarf shrub, the average content of paclitaxel in its bark is one point five ten thousandths, and the average yield is one ten thousandth. Therefore, in order to meet the needs of experiment and clinic, a large number of felling and barking will inevitably destroy the natural environment and ecological balance, and lead to the depletion of resources. Although baccatin III (berry gibberellin III), the precursor of paclitaxel, was isolated from the leaves of Taxus, for the purpose of semi synthesis of paclitaxel, the supply of paclitaxel was still in short supply, which restricted the treatment of other cancers. Therefore, in order to increase the source of taxol, countries all over the world are stepping up the research and development of taxol and its derivatives. Therefore, the long-term stable and large-scale supply of paclitaxel is a serious challenge for scientists all over the world.