1. PACLITAXEL AND ITS ANALOGUESPaclitaxel (taxol, 1), as a wellknown and highly functionalized tetracyclic diterpenoid bioactive compound, was originally found from the bark of Taxus brevifolia in 1971 [12]. It has been proved to exibit efficient activity against prostate, ovarian, breast, and lung cancers with its unique mode of action that paclitaxel binds to tubulin specifically, and prevents their depolymerization during the processes of cell division [13,14]. However, a complete treatment for one patient requires approximately 2 g of paclitaxel administered several times over a few months. To obtain 1 kg of pacli- taxel, it requires about 10,000 kg of Taxus bark [15], and thousands of trees need to be cut down to obtain this quantity
đang được dịch, vui lòng đợi..
