申请人:Banfi Aldo
公开号:US20110230541A1
公开(公告)日:2011-09-22
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-methoxy-naphthalene (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.
一种制备罗蒂高定(I)及其药用可接受盐的方法,包括将式6的胺与2-噻吩乙酸-硼氢化钠复合物进行还原胺化反应,并利用溴化氢盐5作为中间体(II)。该方法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-萘烯(2)出发,以高对映体纯度获得罗蒂高定,避免使用危险的反应物、需要困难的色谱分离或生成副产物。此外,还披露了两种新的结晶形式。