This invention relates to the field of pharmaceutical/process chemistry. Disclosed herein is a process for preparing N4- (2, 2-dimethyl-4- [ (dihydrogen phosphonoxy) methyl] -3-oxo-5-pyrido [1,4] oxazin-6-yl) -5~fluoro-N2- (3,4, 5-trimethox yphenyl) -2, 4-pyrimidinediamine disodium salt, particularly hydrates (such as a hexahydrate). The compound is useful in the treatment and prevention of various diseases. Also disclosed is a process of preparing N4- (2, 2-dimethyl-4- [ (dialkyl phosphonoxy) methyl] -3-oxo-5-pyrido [1, 4] oxazin-6-yl) -5-f luoro-N2- (3,4, 5-trimethox yphenyl ) -2, 4-pyrimidinediamine. Both processes involve the use of an amide. in.
本发明涉及制药/工艺
化学领域。本文公开了一种制备N4-(2,2-二甲基-4-[(二氢氧化
磷酸酯)甲基]-3-氧代-5-
吡啶[1,4]
噁唑-6-基)-5-
氟-N2-(3,4,5-三
甲氧基苯基)-2,4-
嘧啶二胺二钠盐的方法,特别是
水合物(如六
水合物)。该化合物对各种疾病的治疗和预防有用。还公开了一种制备N4-(2,2-二甲基-4-[(二烷基
磷酸酯)甲基]-3-氧代-5-
吡啶[1,4]
噁唑-6-基)-5-
氟-N2-(3,4,5-三
甲氧基苯基)-2,4-
嘧啶二胺的方法。两种方法都涉及使用酰胺。