Process for the Preparation of Cinacalcet and Salts Thereof, and Intermediates for Use in the Process
申请人:Kankan Rajendra Narayanrao
公开号:US20120053362A1
公开(公告)日:2012-03-01
There is provided a process for preparing a salt of the (R)- or (S)-isomer of 1-naphthylethylamine with mandelic acid or a derivative thereof, the process comprising reacting racemic 1-naphthylethylamine with mandelic acid or a derivative thereof to obtain the (R)- or (S)-isomer of 1-naphthylethylamine salt (III) with the acid. The salts also form an aspect of the present invention. There is also provided a salt of the (R)- or (S)-isomer of 1-naphthylethylamine with mandelic acid or a derivative thereof. There is also provided a process for preparing cinacalcet (I) or a salt thereof, the process comprising reacting an ester (II) with (R)-1-naphthylethylamine or a salt of (R)-1-naphthylethylamine and mandelic acid or a derivative thereof, to obtain cinacalcet, and optionally converting the cincalcet to a salt thereof.
提供一种制备曼德酸或其衍生物的(R)-或(S)-异构体的1-萘乙胺盐的方法,该方法包括将外消旋的1-萘乙胺与曼德酸或其衍生物反应,以获得(R)-或(S)-异构体的1-萘乙胺盐(III)。这些盐也是本发明的一个方面。还提供了(R)-或(S)-异构体的1-萘乙胺与曼德酸或其衍生物的盐。还提供了一种制备西那卡塞特(I)或其盐的方法,该方法包括将酯(II)与(R)-1-萘乙胺或(R)-1-萘乙胺和曼德酸或其衍生物的盐反应,以获得西那卡塞特,并可选择将西那卡塞特转化为其盐。