发明人林芳,朱建伟,罗永刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108212767 A, 授权公告日 2020-08-07.
发明人王建平,马晓峰,赵玉洁. "Method for the Synthesis of Ethyl 5-(4-((1,4-dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)phenyl)-5-oxopentanoate" [P]. 中国发明专利, 专利号 CN 115472763 B, 授权公告日 2016-10-05.
发明人高志强,钱学锋,李文辉. "A Process for Preparing High-Purity Ethyl 5-(4-((1,4-dioxa-8-azaspiro[4.5]Decan-8-yl)methyl)phenyl)-5-oxopentanoate" [P]. 中国发明专利, 专利号 CN 115440032 B, 授权公告日 2020-02-25.
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