Process for preparation of hydrates of olanzapine and their...

Details Process for preparation of hydrates of olanzapine and their... Process for preparation of hydrates of olanzapine and their...

C - Chemistry, Metallurgy

07

D

C07D 495/04 (2006.01) C07D 243/00 (2006.01) C07D 333/00 (2006.01)

Patent

CA 2420987

The present invention relates to a method for the preparation of hydrates of 2- methyl-4-(4-methyl-1-piperazinyl)-10H-thieno [2,3-b] [1,5] benzodiazepine (hereinafter referred to as Olanzapine). The present invention also relates to a process for conversion of these hydrates into a pure crystalline form of olanzapine referred to as form-I. The present invention also relates to a method of converting Olanzapine Form-2 to Form-1.

L'invention concerne un procédé de préparation d'hydrates de 2-méthyl-4-(4-méthyl-1-pipérazinyl)-10H-thiéno [2,3-b] [1,5] benzodiazépine (ci-après dénommés olanzapine), ainsi qu'un procédé de conversion de ces hydrates en une forme cristalline pure dénommée forme 1. L'invention concerne encore un procédé de conversion d'olanzapine forme 2 en Olanzapine forme 1.

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