发明人李文辉,孙丽萍,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112569332 A, 授权公告日 2019-12-09.
发明人韩伟,郑宇鹏,郭海燕. "Method for the Synthesis of Methyl 2-hydroxy-8-methyl-4-oxo-4h-pyrido[1,2-a]pyrimidine-3-carboxylate" [P]. 中国发明专利, 专利号 CN 117498783 B, 授权公告日 2019-05-03.
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