[EN] PROCESSES FOR THE PREPARATION OF ROSUVASTATIN OR PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE ROSUVASTATINE OU DE SELS PHARMACEUTIQUEMENT ACCEPTABLES DE CELLE-CI
申请人:LAURUS LABS PRIVATE LTD
公开号:WO2016125086A1
公开(公告)日:2016-08-11
The present invention relates to processes for the preparation of rosuvastatin calcium of formula I and pharmaceutically acceptable salts thereof using novel intermediates, and to a pharmaceutical composition containing the same.
The present invention relates to a process for the preparation of a 1-methyl-1H-tetrazole-5-thio derivative comprising reaction of a halomethyl substrate with 1-methyl-H-tetrazole-5-thiol to obtain a thio-ether compound, and oxidizing the thio-ether compound to the corresponding sulfone. In case of a chiral halomethyl substrate, the resulting chiral diol sulfone derivative is suitable as a building block for statin type compounds.