Roberts E F, O'Brien P Q, Fischer A B. "一种的合成方法" [P]. US Patent, US 11642164 B2, 2015-10-22.
Rossi M, Mueller T C, Lefèvre J P. "Method for the Synthesis of 1-[(Tert-butoxy)carbonyl]-3-(ethoxycarbonyl)azetidine-3-carboxylic acid" [P]. European Patent, EP 3276297 A1, 2021-12-27.
发明人郭海燕,沈红梅,罗永刚. "A Process for Preparing High-Purity 1-[(Tert-butoxy)carbonyl]-3-(ethoxycarbonyl)azetidine-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110794839 B, 授权公告日 2021-02-19.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2010, 341, 3103-3128.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2022, 2153, 9137-9165.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of 1-[(Tert-butoxy)carbonyl]-3-(ethoxycarbonyl)azetidine-3-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2014, 776, (4), 6515-6522.