发明人孙丽萍,王建平,林芳. "Method for the Synthesis of 2-tert-Butyl 4-ethyl 9-benzyl-5-oxo-2,9-diazaspiro[5.5]undecane-2,4-dicarboxylate" [P]. 中国发明专利, 专利号 CN 108762036 A, 授权公告日 2025-07-18.
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