[EN] PREPARATION PROCESS USEFUL IN SYNTHESIS OF ATORVASTATIN<br/>[FR] PROCÉDÉ DE PRÉPARATION UTILE DANS LA SYNTHÈSE DE L'ATORVASTATINE
申请人:CHO DONG-OCK
公开号:WO2009084773A3
公开(公告)日:2010-02-18
PREPARATION PROCESS USEFUL IN SYNTHESIS OF ATORVASTATIN
申请人:Cho Dong-Ock
公开号:US20110112309A1
公开(公告)日:2011-05-12
The present invention relates to a preparation process useful in synthesis of atorvastatin, more particularly a process for preparing atorvastatin is effective in treating hyperlipemia, comprising protecting the dihydroxy group at C3 and C5 positions of the starting material cis-t-butyl-6-substituted-3,5-dihydroxy-hexanoate with trialkyl orthoformate, reducing the terminal nitro or cyano group to amine group, performing JV-alkylation by sequentially reacting with ethyl 4-fluorobenzene-2-haloacetate and isobutyryl chloride, cyclizing with JV,3-diphenylpropynamide, and performing deprotection and hydrolysis.