申请人:SOUKUP MILAN
公开号:US20120296100A1
公开(公告)日:2012-11-22
The present invention relates to a novel manufacturing process and novel intermediates useful in the synthesis of pharmaceutically active compound such as Aliskiren.
The invention describes preparation of enantiomerically pure 8-aryloctanoic acid of formula I from a chiral compound of formula IV. Friedel-Crafts reaction of this compound of formula IV with a compound of formula III provides compound of formula II which is converted reductively in a few steps into the compound of formula V, a know intermediate in the synthesis of compound of formula I. According to the disclosed process, Aliskiren can be now prepared from commercial starting materials (Guajacol or 2-bromoanisole, cis- or trans-1,4-dichloro-2-butene and 4(S)-benzyl-3-isovaleroyl-oxazolidin-2-one) in less than 8 process steps.
本发明涉及一种新型制造工艺和新型中间体,用于合成药用活性化合物如阿利司琼。该发明描述了从式IV手性化合物制备式I式的对映纯8-芳基辛酸的方法。将该式IV化合物与式III化合物进行弗里德尔-克拉夫茨反应,得到式II化合物,经过几个步骤还原转化为式V化合物,这是合成式I化合物的已知中间体。根据披露的工艺,现在可以从商业起始原料(愈创木酚或2-溴苯甲醚、顺式或反式-1,4-二氯-2-丁烯和4(S)-苄基-3-异戊酰氧唑啉-2-酮)中在不到8个步骤内制备阿利司琼。