发明人郑宇鹏,朱建伟,罗永刚. "Method for the Synthesis of 8-tert-Butyl-4-(3,4-difluorobenzoyl)-1-oxa-4-azaspiro[4.5]decane-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113311311 A, 授权公告日 2018-06-06.
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