[EN] PROCESS FOR PREPARATION OF ROSUVASTATIN CALCIUM<br/>[FR] PROCÉDÉ DE PRÉPARATION DE CALCIUM DE ROSUVASTATINE
申请人:REDDYS LAB LTD DR
公开号:WO2012172564A1
公开(公告)日:2012-12-20
Disclosed is the process for the preparation of 4-(fluorophenyl)-6-isopropyl-2-(N-methyl-N-methylsulfonylamino)-5-formyl-pyrimidine of formula (I), which is the intermediate of rosuvastatin calcium. Purification of substantially pure acetonide protected tert-butyl ester of rosuvastatin (II) and its use for the preparation of substantially pure amorphous rosuvastatin calcium are also disclosed.
本发明公开了一种制备式(I)的4-(氟苯基)-6-异丙基-2-(N-甲基-N-甲基磺酰基氨基)-5-甲酰基嘧啶的过程,该化合物是罗伐司汀钙的中间体。本发明还公开了纯度大致纯的罗伐司汀叔丁基酯的乙酰保护和其用于制备大致纯的无定形罗伐司汀钙的用途。