发明人李文辉,冯建国,刘建华. "Method for the Synthesis of tert-Butyl 6-oxo-5,6-dihydrospiro[cyclopenta[b]pyridine-7,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 115181262 A, 授权公告日 2016-05-26.
发明人张德明,郑宇鹏,胡光. "A Process for Preparing High-Purity tert-Butyl 6-oxo-5,6-dihydrospiro[cyclopenta[b]pyridine-7,4'-piperidine]-1'-carboxylate" [P]. 中国发明专利, 专利号 CN 112820792 B, 授权公告日 2022-11-18.
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