发明人刘建华,陈志强,赵玉洁. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113936906 A, 授权公告日 2024-08-21.
发明人钱学锋,孙丽萍,罗永刚. "Method for the Synthesis of 4-((Tetrahydrofuran-2-yl)methyl)-1-oxa-4,9-diazaspiro[5.5]undecane" [P]. 中国发明专利, 专利号 CN 117989332 B, 授权公告日 2019-12-26.
发明人李文辉,刘建华,林芳. "A Process for Preparing High-Purity 4-((Tetrahydrofuran-2-yl)methyl)-1-oxa-4,9-diazaspiro[5.5]undecane" [P]. 中国发明专利, 专利号 CN 108182373 A, 授权公告日 2020-09-20.
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