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Taxus chinensis
Chinese yew species, major commercial source of 10-deacetylbaccatin for paclitaxel semi-synthesis, used in TCM.
Taxus chinensis (Chinese yew) is a conifer species primarily valued as a commercial source of 10-deacetylbaccatin III, a key precursor for the semi-synthesis of the anticancer drug paclitaxel. In traditional Chinese medicine, it has been used in tiny doses as a tonic for digestive complaints, but the raw plant is highly toxic due to taxine alkaloids and cardiac glycosides. Its primary modern relevance is in pharmaceutical production rather than direct therapeutic use.
The anticancer activity of paclitaxel, derived from Taxus chinensis, involves binding to and stabilizing microtubules, thereby inhibiting mitotic spindle formation and inducing apoptosis in cancer cells. The taxine alkaloids (e.g., taxine A and B) exert cardiotoxicity by blocking voltage-gated sodium and calcium channels in cardiac myocytes, leading to conduction abnormalities and arrhythmias. 10-Deacetylbaccatin III serves as a key intermediate for semi-synthesis of paclitaxel and its analogs via esterification at the C-13 side chain.
Chinese yew species, major commercial source of 10-deacetylbaccatin for paclitaxel semi-synthesis, used in TCM.
Taxus chinensis (Chinese yew) is a conifer species primarily valued as a commercial source of 10-deacetylbaccatin III, a key precursor for the semi-synthesis of the anticancer drug paclitaxel. In traditional Chinese medicine, it has been used in tiny doses as a tonic for digestive complaints, but the raw plant is highly toxic due to taxine alkaloids and cardiac glycosides. Its primary modern relevance is in pharmaceutical production rather than direct therapeutic use.
The anticancer activity of paclitaxel, derived from Taxus chinensis, involves binding to and stabilizing microtubules, thereby inhibiting mitotic spindle formation and inducing apoptosis in cancer cells. The taxine alkaloids (e.g., taxine A and B) exert cardiotoxicity by blocking voltage-gated sodium and calcium channels in cardiac myocytes, leading to conduction abnormalities and arrhythmias. 10-Deacetylbaccatin III serves as a key intermediate for semi-synthesis of paclitaxel and its analogs via esterification at the C-13 side chain.