发明人刘建华,孙丽萍,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114122117 A, 授权公告日 2021-06-23.
发明人徐明华,马晓峰,林芳. "Method for the Synthesis of Tert-butyl 7-hydroxy-1-oxo-2,5-diazaspiro[3.4]Octane-5-carboxylate" [P]. 中国发明专利, 专利号 CN 115067198 B, 授权公告日 2015-02-13.
发明人郑宇鹏,胡光,赵玉洁. "A Process for Preparing High-Purity Tert-butyl 7-hydroxy-1-oxo-2,5-diazaspiro[3.4]Octane-5-carboxylate" [P]. 中国发明专利, 专利号 CN 112128342 B, 授权公告日 2016-10-07.
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