发明人朱建伟,郑宇鹏,马晓峰. "Method for the Synthesis of 2-(Tert-butyl) 8-ethyl 7-oxo-5-thia-2-azaspiro[3.4]Octane-2,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 114721821 A, 授权公告日 2017-09-07.
发明人刘建华,郭海燕,朱建伟. "A Process for Preparing High-Purity 2-(Tert-butyl) 8-ethyl 7-oxo-5-thia-2-azaspiro[3.4]Octane-2,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 116682077 B, 授权公告日 2025-12-06.
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