Brown S R, Patel M V, Thompson G K. "Method for the Synthesis of 1,6-Diazaspiro[3.3]heptane-1-carboxylic Acid 1,1-Dimethylethyl Ester" [P]. US Patent, US 10777075 B2, 2018-12-01.
发明人郭海燕,何建平,黄志刚. "A Process for Preparing High-Purity 1,6-Diazaspiro[3.3]heptane-1-carboxylic Acid 1,1-Dimethylethyl Ester" [P]. 中国发明专利, 专利号 CN 108342401 B, 授权公告日 2025-06-11.
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