Atorvastatin calcium propylene glycol solvates

C - Chemistry – Metallurgy – 07 – D

Patent

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Details

C07D 207/34 (2006.01) A61K 31/40 (2006.01) A61P 3/06 (2006.01)

Patent

CA 2676443

The present application relates to atorvastatin calcium propylene glycol solvates and processes of preparing the same. The atorvastatin calcium propylene glycol solvates are crystalline and show high chemical and solid state stability, low hygroscopicity, and good flow properties.The solvates can be efficiently prepared from various forms of atorvastatin and either (R), (S), or mixtures of (R) and (S) propylene glycol, and may be easily filtered and dried on an industrial scale.

La présente invention porte sur des solvates atorvastatine calcique propylène glycol et sur des procédés permettant de les préparer. Les solvates atorvastatine calcique propylène glycol sont cristallins et présentent une stabilité chimique et à l'état solide élevée, une faible hygroscopicité et de bonnes propriétés d'écoulement. Les solvates peuvent être préparés de façon efficace à partir de différentes formes d'atorvastatine et (R) ou (S) ou des mélanges de (R) et (S) propylène glycol, et peuvent être facilement filtrés et séchés à une échelle industrielle.

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