发明人赵玉洁,张德明,高志强. "Method for the Synthesis of (8S,9AR)-8-hydroxyhexahydro-1H-pyrido[1,2-a]pyrazine-1,4(6H)-dione" [P]. 中国发明专利, 专利号 CN 116279263 B, 授权公告日 2017-01-05.
发明人徐明华,孙丽萍,何建平. "A Process for Preparing High-Purity (8S,9AR)-8-hydroxyhexahydro-1H-pyrido[1,2-a]pyrazine-1,4(6H)-dione" [P]. 中国发明专利, 专利号 CN 111774719 B, 授权公告日 2021-05-14.
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