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Roberts E F, Johnson M A, Thompson G K. "Method for the Synthesis of (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-cyclobutylpropanoic acid" [P]. US Patent, US 11391531 B2, 2021-10-18.
发明人郭海燕,何建平,孙丽萍. "A Process for Preparing High-Purity (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-cyclobutylpropanoic acid" [P]. 中国发明专利, 专利号 CN 114634287 A, 授权公告日 2021-11-28.
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