[EN] METHOD FOR PREPARING PHARMACEUTICALLY ACTIVE INGREDIENT AND INTERMEDIATES THEREOF [FR] PROCÉDÉ DE PRÉPARATION D'UNE SUBSTANCE PHARMACEUTIQUEMENT ACTIVE ET DE SES INTERMÉDIAIRES
[EN] METHOD FOR PREPARING PHARMACEUTICALLY ACTIVE INGREDIENT AND INTERMEDIATES THEREOF [FR] PROCÉDÉ DE PRÉPARATION D'UNE SUBSTANCE PHARMACEUTIQUEMENT ACTIVE ET DE SES INTERMÉDIAIRES
PROCESS FOR THE PREPARATION OF HIGH-PURITY PRASUGREL
申请人:RICHTER GEDEON NYRT.
公开号:US20190211029A1
公开(公告)日:2019-07-11
The field of invention relates to a novel process, suitable for industrial scale manufacture, for the preparation of high-purity 5-[2-cyclopropyl-1-(2-fluorophenyl)-2-oxoethyl]-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-yl acetate, prasugrel, of Formula (I). Especially in large-scale production, one of the main causes of piling up the impurities is the use of ether solvents consequently in each step in this procedure ethers are excluded. Avoiding the ethers resulted new conditions for production of intermediates in the different steps of our procedure. Conditions were determined so that each step from the beginning contributes to minimizing the impurity content of the end-product.