发明人钱学锋,李文辉,孙丽萍. "Method for the Synthesis of (2R,4r,5S)-5-((tert-butoxycarbonyl)amino)spiro[3.3]Heptane-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115597464 B, 授权公告日 2018-02-16.
发明人周伟,韩伟,刘建华. "A Process for Preparing High-Purity (2R,4r,5S)-5-((tert-butoxycarbonyl)amino)spiro[3.3]Heptane-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114640972 B, 授权公告日 2022-07-03.
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