A method for the production of nuclear substituted cinnamoylanthranilic acid derivatives and intermediates thereof
申请人:Kissei Pharmaceutical Co Ltd
公开号:EP0074725A1
公开(公告)日:1983-03-23
The present invention provides an improved method for producing a nuclear substituted cinnamoyl-anthranilic acid compound.
Illustrative of the process is the reaction of 3,4-dimethoxybenzaldehyde with 2-carboxymalonanilic acid in an inert solvent medium in the presence of piperidine to provide an intermediate salt precipitate, and the salt is treated with an acidic reagent to yield N-(3,4-dimethoxycinnamoyl)anthranilic acid product.
本发明提供了一种生产核取代肉桂酰-氨基苯甲酸化合物的改进方法。
该工艺的示例是:在哌啶存在下,3,4-二甲氧基苯甲醛与 2-羧基丙二酸在惰性溶剂介质中反应,生成中间盐沉淀,该盐经酸性试剂处理后生成 N-(3,4-二甲氧基肉桂酰基)蒽酸产物。