申请人:Banfi Aldo
公开号:US08519160B2
公开(公告)日:2013-08-27
A process for the preparation of Rotigotine (I) and of pharmaceutically acceptable salts thereof, which comprises the reductive amination of an amine of formula 6 with the 2-thienylacetic acid-sodium boron hydride complex and which makes use of hydrobromide 5 as an intermediate (II). The process is advantageous from the industrial point of view in that it allows to obtain Rotigotine with high enantiomeric purity starting from optically active 5,6,7,8-tetrahydro-6-(S)-N-propylamino-1-methoxynaphthalene (2), avoiding the use of dangerous reactives, the need for difficult chromatographic separation or the formation of by-products. Furthermore, two novel crystalline forms are disclosed.
一种制备Rotigotine(I)及其药学上可接受的盐的方法,其包括将6式胺与2-噻吩乙酸-硼氢化钠复合物进行还原胺化反应,并利用羟溴酸5作为中间体(II)。该工艺在工业角度上具有优势,因为它允许从光学活性的5,6,7,8-四氢-6-(S)-N-丙基氨基-1-甲氧基萘(2)开始获得高对映纯度的Rotigotine,避免使用危险反应物、需要困难的色谱分离或副产物的形成。此外,还披露了两种新的晶体形式。