abstract |
The present invention relates to a new method of preparation of copanlisib, copanlisib dihydrochloride or copanlisib dihydrochloride hydrates, to new intermediate compounds and to the use of the new intermediate compounds for the preparation of copanlisib, copanlisib dihydrochloride or copanlisib dihydrochloride hydrates. The present invention also relates to copanlisib dihydrochloride hydrates as compounds. |