申请人:AZAD PHARMACEUTICAL INGREDIENTS AG
公开号:US20180370958A1
公开(公告)日:2018-12-27
The present invention relates to a new route of synthesis for obtaining Opicapone ((4Z)-4-[3-(2,5-dichloro-4,6-dimethyl-1-oxidopyridin-1-ium-3-yl)-2H-1,2,4-oxadia-zol-5-ylidene]-2-hydroxy-6-nitrocyclohexa-2,5-dien-1-one), new intermediates in the reaction path and the new substance 2,5-dichloro-N-hydroxy-4,6-dimethylpyridine-3-carboximidoyl chloride.
本发明涉及一种用于合成Opicapone((4Z)-4-[3-(2,5-二氯-4,6-二甲基-1-氧代吡啶-1-ium-3-yl)-2H-1,2,4-噁二唑-5-ylidene]-2-羟基-6-硝基环己-2,5-二烯-1-酮)的新合成途径,反应路径中的新中间体以及新物质2,5-二氯-N-羟基-4,6-二甲基吡啶-3-甲酰氯。