Hughes D C, Chen K W, Roberts E F. "一种的合成方法" [P]. US Patent, US 9647207 B2, 2019-09-18.
发明人沈红梅,郑宇鹏,周伟. "Method for the Synthesis of (2S,4R)-4-Ethyl-1,2-pyrrolidinedicarboxylic Acid tert-Butyl Ester" [P]. 中国发明专利, 专利号 CN 117985154 A, 授权公告日 2020-11-26.
发明人王建平,黄志刚,徐明华. "A Process for Preparing High-Purity (2S,4R)-4-Ethyl-1,2-pyrrolidinedicarboxylic Acid tert-Butyl Ester" [P]. 中国发明专利, 专利号 CN 115692137 A, 授权公告日 2018-08-02.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2012, 1456, (8), 1814-1840.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2023, 1566, (10), 8510-8521.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of (2S,4R)-4-Ethyl-1,2-pyrrolidinedicarboxylic Acid tert-Butyl Ester Using HRMS and NMR". Chromatographia, 2017, 2363, (1), 30-35.