[EN] IMPROVED PROCESS TO PREPARE S-2-HYDROXY-3-METHOXY-3,3-DIPHENYL PROPIONIC ACID<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA PRÉPARATION D'ACIDE S-2-HYDROXY-3-MÉTHOXY-3,3-DIPHÉNYLPROPIONIQUE
申请人:NATCO PHARMA LTD
公开号:WO2012017441A1
公开(公告)日:2012-02-09
Disclosed is a process for the preparation of S-2-Hydroxy-3-methoxy-3,3-diphenylpropionic acid (I) the key intermediate for the preparation of Ambrisentan [(+)-2(S)-(4,6-Dimethylpyrimidin-2-yloxy)-3-methoxy-3,3-diphenylpropionic acid]. Ambrisentan of the formula (IA) is approved under the trademark "Letairis ®" by the US Food and Drug Administration for the treatment of Pulmonary artery hypertension(PAH).
本文披露了一种制备S-2-羟基-3-甲氧基-3,3-二苯基丙酸(I)的方法,该方法是制备Ambrisentan [(+)-2(S)-(4,6-二甲基嘧啶-2-氧基)-3-甲氧基-3,3-二苯基丙酸]的关键中间体。具有式(IA)的Ambrisentan已经被美国食品药品监督管理局批准,商标为"Letairis ®",用于治疗肺动脉高压(PAH)。