[EN] PROCESS FOR THE PREPARATION OF INTERMEDIATES USEFUL IN THE SYNTHESIS OF STATIN DERIVATIVES ESPECIALLY 7-AMINO 3,5-DIHYDROXY HEPTANOIC ACID DERIVATIVES, AND INTERMEDIATES THEREOF<br/>[FR] PREPARATION D'INTERMEDIAIRES CONVENANT BIEN POUR LA SYNTHESE DE DERIVES DE STATINE, EN PARTICULIER DE DERIVES D'ACIDE 7-AMINO 3,5-DIHYDROXY HEPTANOIQUE ET DE DERIVES DE CET ACIDE
申请人:CIBA SC HOLDING AG
公开号:WO2003004450A1
公开(公告)日:2003-01-16
The invention relates to synthesis methods for the preparation of statin derivatives, which methods proceed by way of a key intermediate of formula I wherein X is halogen, acyloxy, activated hydrocarbyloxy, activated hydrocarbylthio or N(CH3)OCH3, Ra is a hydroxy-protecting group, and Rb is a carboxy-protecting group, and, as well as to the compound of formula I, to further intermediates and methods for their preparation by Friedel-Crafts acylation.