发明人孙丽萍,胡光,唐晓军. "一种4-(叔丁氧基羰基)-1-(6-乙氧基嘧啶-4-基)哌嗪-2-羧酸的合成方法" [P]. 中国发明专利, 专利号 CN 117704895 A, 授权公告日 2021-09-18.
发明人张德明,韩伟,郭海燕. "Method for the Synthesis of 4-(tert-Butoxycarbonyl)-1-(6-ethoxypyrimidin-4-yl)piperazine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108299939 B, 授权公告日 2022-05-20.
参考文献 Literature
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