发明人唐晓军,周伟,黄志刚. "Method for the Synthesis of 5-Benzyl 7-methyl 8-oxo-5-azaspiro[2.5]octane-5,7-dicarboxylate" [P]. 中国发明专利, 专利号 CN 115642363 B, 授权公告日 2015-09-06.
发明人杨光,沈红梅,胡光. "A Process for Preparing High-Purity 5-Benzyl 7-methyl 8-oxo-5-azaspiro[2.5]octane-5,7-dicarboxylate" [P]. 中国发明专利, 专利号 CN 110265873 A, 授权公告日 2017-06-28.
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