发明人王建平,钱学锋,沈红梅. "Method for the Synthesis of Ethyl 8-methyl-4-oxo-6-phenyl-3,4-dihydro-2h,6h-pyrimido[2,1-b][1,3]thiazine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 109103092 A, 授权公告日 2021-08-13.
发明人郑宇鹏,钱学锋,冯建国. "A Process for Preparing High-Purity Ethyl 8-methyl-4-oxo-6-phenyl-3,4-dihydro-2h,6h-pyrimido[2,1-b][1,3]thiazine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 110579092 B, 授权公告日 2024-04-02.
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