Chemical compositions and biological activities of the oils from the genus Taxus and factors limiting the regeneration of endangered yews: a review

The genus Taxus (yews) is the largest of family Taxaceae. It comprises about 24 species with 55 varieties distributed mainly in Asia, Europe, North Africa, and America. In addition to taxane diterpenoids cancer drug taxol, its contain many essential oils actual or potential biological activity. This review covers chemical constituents as well activities these that have been studied fourteen countries over 46 years (1975-2021). also discusses biotic abiotic factors limit regeneration economically medicinally important plants.