发明人林芳,朱建伟,郑宇鹏. "Method for the Synthesis of 1-((3-Methyl-2-oxo-2,3-dihydrobenzo[d]oxazol-6-yl)sulfonyl)piperidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108931296 A, 授权公告日 2017-12-12.
发明人徐明华,陈志强,朱建伟. "A Process for Preparing High-Purity 1-((3-Methyl-2-oxo-2,3-dihydrobenzo[d]oxazol-6-yl)sulfonyl)piperidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113867506 B, 授权公告日 2016-09-09.
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