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发明人马晓峰,周伟,胡光. "Method for the Synthesis of 3-(tert-Butyl) 8-methyl 9-oxo-3-azaspiro[5.5]undecane-3,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 117128477 B, 授权公告日 2021-12-24.
发明人赵玉洁,钱学锋,陈志强. "A Process for Preparing High-Purity 3-(tert-Butyl) 8-methyl 9-oxo-3-azaspiro[5.5]undecane-3,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 114917998 A, 授权公告日 2023-09-02.
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