
{"publication_number": "US-2006199855-A1", "abstract": "a process is provided for preparing pharmaceutical grade atorvastatin hemicalcium salt comprising : deesterifying , wherein r is an ester protecting group to extracting r - 3 into an organic solvent or mixture of solvents , adding a base of formula nr 1 r 2 r 3 wherein r 1 , r 2 and r 3 are independently selected from h , substituted or non - substituted c1 to c7 alkyl , c6 to c9 aryl , c8 to c10 aralkyl or aminoalkyl to form atorvastatin base salt , isolating by precipitation of the above atorvastatin base salt and purifying when necessary ,", "application_number": "US-19741305-A", "description": "to a mixture of 150 g ( 4r - cis )- 1 , 1 - dimethylethyl - 6 -{ 2 -[[ 2 -( 4 - fluorophenyl )]- 5 -( 1 - methylethyl )- 3 - phenyl - 4 -[( phenylamino ) carbonyl ]- 1h - pyrrole - 1 - yl ] ethyl 