发明人陈志强,赵玉洁,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115015911 A, 授权公告日 2021-04-24.
发明人罗永刚,何建平,赵玉洁. "Method for the Synthesis of (R)-Hexahydro-4H-pyrido[1,2-a]pyrazine-1,4(6H)-dione" [P]. 中国发明专利, 专利号 CN 115394736 A, 授权公告日 2024-07-20.
发明人马晓峰,钱学锋,王建平. "A Process for Preparing High-Purity (R)-Hexahydro-4H-pyrido[1,2-a]pyrazine-1,4(6H)-dione" [P]. 中国发明专利, 专利号 CN 114551012 A, 授权公告日 2022-09-12.
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