Process for preparing amorphous atorvastatin hemi-calcium by...

Details Process for preparing amorphous atorvastatin hemi-calcium by... Process for preparing amorphous atorvastatin hemi-calcium by...

C - Chemistry, Metallurgy

07

D

C07D 207/34 (2006.01)

Patent

CA 2582087

Novel processes for the preparation of amorphous atorvastatin hemi-calcium salt are provided, which involve dissolving atorvastatin hemi-calcium salt in certain organic solvents, and removing the solvent such as by spray drying, rapid vacuum evaporation, and/or thin film evaporation. Preferred embodiments of these processes for preparing amorphous atorvastatin hemi-calcium salt are reproducible, applicable on a large scale, and do not involve the use of hydrocarbons.

L'invention concerne des procédés d'élaboration de sel d'hémicalcium d'atorvastatine amorphe : dissolution du sel dans certains solvants organiques et élimination de solvant du type à séchage par pulvérisation, évaporation sous vide rapide, et/ou évaporation en film mince. En modes de réalisation préférés, les procédés décrits sont reproductibles, applicables à grande échelle, et ils ne font pas intervenir d'hydrocarbures.

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