Abstract: Disclosed is a process for the purification of staurosporine (1), which comprises salification of staurosporine (1) (Formula (1)) by treatment with a mineral acid to give a precipitated salt, isolation of the staurosporine (1) precipitated salt, treatment of the staurosporine (1) isolated salt with an organic base, and isolation of staurosporine (1). Also disclosed are novel polymorphic forms of the mono- and bis-hydrochloride salts of staurosporine (1).

Abstract: The present invention relates to a new anhydrous crystalline form of Cabazitaxel of formula (I), designated as form H. A further object of the present invention is a processes for the preparation of the above mentioned form H by recrystallization of Cabazitaxel from a mixture of decanoyl- and octanoyl triglycerides or from glycerol trioctanoate. Form H of Cabazitaxel is useful for the preparation of Cabazitaxel, Cabazitaxel salts, and polymorphic forms thereof. It is also particularly useful as a medicament, especially for the treatment of cancers.

Abstract: The present invention relates to new crystalline forms of Cabazitaxel of formula (I). Specifically, the present invention provides four new crystalline solvate forms of Cabazitaxel, designated as form S2 (solvate with 2-methyltetrahydrofuran), form S4 (solvate with tent-butyl acetate), form S5 (solvate with dimethylcarbonate) and form S6 (solvate with N-methyl-2-pyrrolidinone). A further object of the present invention are processes for the preparation of the above mentioned crystalline forms. The crystalline solvate forms of the invention are especially useful for the preparation of Cabazitaxel, Cabazitaxel salts, and polymorphic forms thereof.

Abstract: The present invention relates to a new anhydrous crystalline form of Cabazitaxel of formula (I), designated as form H. A further object of the present invention is a processes for the preparation of the above mentioned form H by recrystallization of Cabazitaxel from a mixture of decanoyl- and octanoyl triglycerides or from glycerol trioctanoate. Form H of Cabazitaxel is useful for the preparation of Cabazitaxel, Cabazitaxel salts, and polymorphic forms thereof. It is also particularly useful as a medicament, especially for the treatment of cancers.