The present invention provides for a novel process of making 6-carboxylic acid derivatives of pyrido[2,3-d]pyrimidin-7-one's, as well as a novel process for making 8-(2,6-difluorophenyl)-4-(4-fluoro-2-methylphenyl)-2-[2-hydroxy-1-(hydroxymethyl)ethyl]-amino}pyrido[2,3-d]pyrimidin-7(8H)-one, and salts thereof.
                            本发明提供了一种制备
吡啶[2,3-d]
嘧啶-7-酮的6-
羧酸衍
生物的新工艺,以及制备8-(2,6-二
氟苯基)-4-(4-
氟-2-甲基苯基)-2-[2-羟基-1-(羟甲基)乙基]-
氨基}
吡啶[2,3-d]
嘧啶-7(8H)-酮及其盐的新工艺。