A new method for the preparation of IX atorvastatin hemi-calcium Form I, and VIII as well as the process for their preparation and novel crystalline form of atorvastatin hemi-calcium

摘要

The present invention provides novel forms of atorvastatin designated Forms IXa, XIV, XVI and XVII and novel processes for their preparation as well as processes for preparing atorvastatin hemi-calcium Forms I, XIII and IX.