发明人沈红梅,刘建华,黄志刚. "Method for the Synthesis of tert-butyl 5-(2-methylpyrazol-3-yl)-2-oxo-3,9-diazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 111812525 A, 授权公告日 2025-11-12.
发明人朱建伟,孙丽萍,何建平. "A Process for Preparing High-Purity tert-butyl 5-(2-methylpyrazol-3-yl)-2-oxo-3,9-diazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 111517205 B, 授权公告日 2024-12-04.
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