Process for preparing crystalline form i of cabergoline

Details Process for preparing crystalline form i of cabergoline Process for preparing crystalline form i of cabergoline

C - Chemistry, Metallurgy

07

D

C07D 457/04 (2006.01) C07D 261/08 (2006.01) C07D 457/06 (2006.01)

Patent

CA 2478149

A process for producing crystalline form I of cabergoline, which process comprises crystallization of the desired form from a toluene/heptane or toluene/hexane mixture starting from raw cabergoline, followed by recovery and removal of the solvent from the resulting toluene solvate Form X. The new solvate Form X of cabergoline, useful intermediate, and its preparation are also provided.

L'invention concerne un procédé d'obtention d'une forme I cristalline de cabergoline, comprenant la cristallisation de la forme souhaitée à partir d'un toluène/heptane ou d'un mélange de toluène/hexane à partir d'une cabergoline brute, suivie de la récupération et de l'élimination du solvant de la forme X du solvate de toluène obtenu. La nouvelle forme X de solvate de cabergoline, servant d'intermédiaire, et sa préparation font également l'objet de cette invention.

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