NOVEL CRYSTAL FORMS OF ATORVASTATIN HEMI-CALCIUM AND PROCESSES FOR THEIR PREPARATION, AS WELL AS NOVEL PROCESSES FOR PREPARING ATORVASTATIN HEMI-CALCIUM FORMS I, VIII AND IX

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.