The present invention provides novel forms of atorvastatin designated Forms VI, VIII, IX, X, XI and XII and novel processes for their preparation as well as processes for preparing atorvastatin Forms I, II, IV, V and amorphous atorvastatin. Also provided is atorvastatin hemi-calcium Form VIII that is stable against the formation of atorvastatin hemi-calcium is atorvastatin calcium epoxy dihydroxy (AED).
本发明提供了
阿托伐他汀的新型形式,分别为VI、VIII、IX、X、XI和XII型,并提供了制备它们的新型工艺,以及制备
阿托伐他汀I、II、IV、V型和非晶态
阿托伐他汀的工艺。同时,提供了稳定
阿托伐他汀半
钙盐形式VIII的工艺,该工艺不会形成
阿托伐他汀半
钙盐环氧二羟基(AED)。