СПОСОБ ХРОМАТОГРАФИЧЕСКОГО РАЗДЕЛЕНИЯ ПАКЛИТАКСЕЛА И ЦЕФАЛОМАННИНА

摘要

A method for separating paclitaxel from cephalomannin and other related compounds by obtaining a starting material that contains paclitaxel and cephalomannin; dissolving the starting material in any one of a number of particularly defined solvents such as butyl formate and butyl acetate to form a mixture; subjecting the mixture to column chromatography to obtain an eluted fraction of paclitaxel, an eluted fraction of cephalomannin and a residue; and separately drying the paclitaxel and cephalomannin fractions to obtain separate crystalline forms of paclitaxel and cephalomannin, respectively.