[EN] INTERMEDIATES 2-(2-CHLORO-5-HYDROXY-4-METHYLCARBAMOYLPHENOXY)-2-METHYLPROPIONIC ACID TERT-BUTYL ESTER AND GLYCIDYL BENZENE SULFONATES OR SALTS THEREOF AND THE PROCESS FOR PREPARATION OF SAID INTERMEDIATES<br/>[FR] INTERMÉDIAIRES ESTER TERT-BUTYLIQUE D'ACIDE 2-(2-CHLORO-5-HYDROXY-4-MÉTHYLCARBAMOYLPHÉNOXY)-2-MÉTHYLPROPIONIQUE ET GLYCIDYLBENZÈNESULFONATES OU SELS DE CEUX-CI ET PROCÉDÉ POUR LA PRÉPARATION DESDITS INTERMÉDIAIRES
申请人:ASTRAZENECA AB
公开号:WO2010007408A2
公开(公告)日:2010-01-21
The present invention relates to novel processes for the preparation of intermediate compounds which can be used to prepare therapeutic drugs. The invention relates to the intermediates 2-(2-Chloro-5-hydroxy-4-5 methylcarbamoylphenoxy)-2-methylpropionic acid tert-butyl ester and glycidyl benzene sulfonates or salts thereof. More specifically, the present invention relates to the intermediates 2-(2-Chloro-5-hydroxy-4-methylcarbamoylphenoxy)-2-methylpropionic acid tert-butyl ester and novel glycidyl benzene sulfonates of formula IV as defined below, useful in the preparation of 2-10 2-Chloro-5-[(2S)-3-(5-chloro-1'H,3H-spiro[1-benzofuran-2,4'-piperidin]-1'-yl)-2-hydroxypropyl]oxy}-4-[(methylamino)carbonyl]phenoxy}-2-methylpropanoic acid.