[EN] IMPROVED METHOD OF SYNTHESIS AND PURIFICATION OF CITRULLINE<br/>[FR] PROCÉDÉ AMÉLIORÉ DE SYNTHÈSE ET DE PURIFICATION DE LA CITRULLINE
申请人:ASKLEPION PHARMACEUTICALS LLC
公开号:WO2020247853A1
公开(公告)日:2020-12-10
This invention provides for synthesis of citrulline from a transition metal complex of ornithine using cyanate to derivatize the terminal amino group of ornithine. The invention also provides improved methods for purification of citrulline produced by reaction of cyanate with ornithine via the steps of reprecipitation of copper complex of citrulline, removal of the complexing metal by sulfide precipitation, activated carbon adsorption and antisolvent crystallization.
本发明提供了一种从鸟氨酸的过渡金属配合物中使用氰酸盐对鸟氨酸的末端氨基基团进行衍生化来合成精氨酸的方法。本发明还提供了改进的精氨酸纯化方法,通过再沉淀精氨酸铜配合物,通过硫化物沉淀去除络合金属,活性炭吸附和反溶剂结晶的步骤来制备氨基酸。