NOVEL PROCESS FOR THE PRODUCTION OF AMORPHOUS [R-(R*,R*)]-2-(4- -FLUOROPHENYL)-'BETA','DELTA'-DIHYDROXY-5-(1-METHYLETHYL)-3- -PHENYL-4-[(PHENYLAMINO)CARBONYL]-1H-PYRROLE-1-HEPTANOIC ACID CALCIUM SALT (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.