The invention provides an industrial synthesis method of a water-soluble
docetaxel derivative. The method is characterized in that 10-deacetylbaccatin III is used as a substrate, and the 10-deacetylbaccatin III and (R)-4-dimethylamino-2-fluoro-
butyric acid hydrochloride are synthesized into the water-soluble
docetaxel derivative. According to the method, a two-step synthesis technology, a centrifugal extraction
separation technology, a recrystallization technology, a supercritical CO2 fluid
drying technology and a full-
automatic control technology are combined, synthesis and purification are carried out under the synergistic effect of the technologies, the water
solubility of the water-soluble
docetaxel derivative produced by the combined technology can reach 12 mg / ml or above, and the the water-soluble docetaxel derivative has about 2000 times higher
solubility in water than docetaxel. A
docetaxel injection prepared by the method does not use absolute ethyl
alcohol or Tween-80 hydrotropy, and the docetaxel derivative is a water-soluble docetaxel derivative which is efficient, free of
anaphylactic reaction and small in toxic and
side effect. Therefore, the product has the characteristics of small toxic and side effects, low production cost, high product purity, high product yield and stable quality, and is suitable for industrial large-scale production.