Ny fremgangsmåte for fremstilling av amorft £R-(R*,R*)|-2-(4-fluorfenyl)-<beta>,<delta>-dihydroksy-5-(1-metyletyl)-3-fenyl-4-£(fenylamino)karbonyl|-1H-pyrrol-1-heptansyre-kalsiumsalt (2:1)

摘要

A novel process for the preparation of amorphous atorvastatin is described where crystalline Form I atorvastatin is dissolved in a non-hydroxylic solvent and after removal of the solvent affords amorphous atorvastatin.