发明人林芳,钱学锋,赵玉洁. "Method for the Synthesis of (3S,6R)-5-(tert-butoxycarbonyl)-1,1-difluoro-5-azaspiro[2.4]Heptane-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110882078 B, 授权公告日 2021-04-04.
Martínez F, Lefèvre J P, Mueller T C. "A Process for Preparing High-Purity (3S,6R)-5-(tert-butoxycarbonyl)-1,1-difluoro-5-azaspiro[2.4]Heptane-6-carboxylic acid" [P]. European Patent, EP 3775513 A1, 2022-03-04.
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