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)

Patent

CA 2402836

A process for producing crystalline form I of cabergoline, which process comprises crystallization of the desired form from a toluene/diethyl ether mixture comprising raw cabergoline, followed by recovery and drying of the resulting crystals. A new solvate form V of cabergoline, useful as an intermediate, is also provided.

L'invention concerne un procédé de fabrication de la forme cristalline I de cabergoline consistant à cristalliser la forme souhaitée d'un mélange d'éther de toluène/diéthyle contenant de la cabergoline brute, et à récupérer et sécher les cristaux résultants. L'invention concerne également une nouvelle forme solvate V de cabergoline servant d'intermédiaire.

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