发明人郑宇鹏,唐晓军,赵玉洁. "Method for the Synthesis of 6-Benzyl 4-ethyl 2-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-4,6(5H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 116204816 A, 授权公告日 2015-12-02.
发明人钱学锋,林芳,黄志刚. "A Process for Preparing High-Purity 6-Benzyl 4-ethyl 2-hydroxy-7,8-dihydropyrido[4,3-d]pyrimidine-4,6(5H)-dicarboxylate" [P]. 中国发明专利, 专利号 CN 114390438 A, 授权公告日 2021-10-28.
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