发明人陈志强,冯建国,林芳. "Method for the Synthesis of 5-[(tert-Butoxy)carbonyl]-7,7-difluoro-2-oxa-5-azabicyclo[4.1.0]heptane-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109400074 A, 授权公告日 2018-01-09.
发明人郑宇鹏,唐晓军,林芳. "A Process for Preparing High-Purity 5-[(tert-Butoxy)carbonyl]-7,7-difluoro-2-oxa-5-azabicyclo[4.1.0]heptane-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117456315 B, 授权公告日 2019-07-20.
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