Williams B T, Park J H, Chen K W. "Method for the Synthesis of 3-(2-{[(tert-butoxy)carbonyl]amino}propan-2-yl)-1,2-oxazole-4-carboxylic acid" [P]. US Patent, US 11516316 B2, 2022-06-07.
发明人刘建华,孙丽萍,杨光. "A Process for Preparing High-Purity 3-(2-{[(tert-butoxy)carbonyl]amino}propan-2-yl)-1,2-oxazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116498507 A, 授权公告日 2023-05-23.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of 3-(2-{[(tert-butoxy)carbonyl]amino}propan-2-yl)-1,2-oxazole-4-carboxylic acid in Pharmaceutical Formulations". Anal. Chim. Acta, 2020, 1209, 3166-3189.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 3-(2-{[(tert-butoxy)carbonyl]amino}propan-2-yl)-1,2-oxazole-4-carboxylic acid as an Impurity". J. Sep. Sci., 2014, 2101, (8), 5883-5911.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of 3-(2-{[(tert-butoxy)carbonyl]amino}propan-2-yl)-1,2-oxazole-4-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2017, 2010, (2), 4310-4321.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate 3-(2-{[(tert-butoxy)carbonyl]amino}propan-2-yl)-1,2-oxazole-4-carboxylic acid Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2019, 1635, 5958-5961.