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发明人韩伟,孙丽萍,刘建华. "Method for the Synthesis of 6-tert-Butyl 8-ethyl 6-azaspiro[3.4]octane-6,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 116462844 B, 授权公告日 2022-06-14.
发明人郑宇鹏,徐明华,郭海燕. "A Process for Preparing High-Purity 6-tert-Butyl 8-ethyl 6-azaspiro[3.4]octane-6,8-dicarboxylate" [P]. 中国发明专利, 专利号 CN 110230001 B, 授权公告日 2023-11-12.
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