发明人王建平,赵玉洁,高志强. "Method for the Synthesis of 7-(Tert-butoxycarbonyl)-2,7-diazaspiro[4.4]Nonane-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117878423 B, 授权公告日 2019-06-14.
Stevens L M, Roberts E F, Thompson G K. "A Process for Preparing High-Purity 7-(Tert-butoxycarbonyl)-2,7-diazaspiro[4.4]Nonane-4-carboxylic acid" [P]. US Patent, US 10734419 B2, 2024-07-11.
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