申请人:SENSORION
公开号:US11180480B2
公开(公告)日:2021-11-23
A process for manufacturing 2-isobutyl-6-(3-(methylamino)azetidin-1-yl)pyrimidin-4-amine of Formula (I):
including starting from 6-chloro-2-isobutylpyrimidin-4-amine and tert-butyl azetidin-3-yl(methyl)carbamate, or another N-protected N-methylazetidin-3-amine, and performing the following steps: (a) coupling reaction of both compounds in dimethylsulfoxide in presence of potassium carbonate to afford an intermediate protected compound; and (b) deprotection of the protected compound to afford 2-isobutyl-6-(3-(methylamino)azetidin-1-yl)pyrimidin-4-amine. Also, a process for manufacturing the intermediate protected compound, wherein deprotection step (b) is omitted, and the compounds obtained from the processes.
一种制造式 (I) 的 2-异丁基-6-(3-(甲基氨基)氮杂环丁烷-1-基)嘧啶-4-胺的工艺:
包括从 6-氯-2-异丁基嘧啶-4-胺和氮杂环丁烷-3-基(甲基)氨基甲酸叔丁酯或另一种 N-保护的 N-甲基氮杂环丁烷-3-胺开始,进行以下步骤:(a) 在碳酸钾存在下,将两种化合物在二甲基亚砜中进行偶联反应,得到受保护的中间化合物;以及 (b) 对受保护的化合物进行脱保护反应,得到 2-异丁基-6-(3-(甲基氨基)氮杂环丁烷-1-基)嘧啶-4-胺。另外,一种生产受保护的中间体化合物的工艺,其中省略了脱保护步骤(b),以及从这些工艺中得到的化合物。