Chen K W, Klinger H, Williams B T. "一种1-((叔丁氧基羰基)氨基)-3-氧代环丁烷甲酸乙酯的合成方法" [P]. US Patent, US 9374790 B2, 2023-08-19.
Schröder R, Björnsson E, Kowalski A. "Method for the Synthesis of Ethyl 1-((tert-butoxycarbonyl)amino)-3-oxocyclobutanecarboxylate" [P]. European Patent, EP 3511661 A1, 2022-05-20.
Rossi M, Schröder R, Nielsen H. "A Process for Preparing High-Purity Ethyl 1-((tert-butoxycarbonyl)amino)-3-oxocyclobutanecarboxylate" [P]. European Patent, EP 3233861 A1, 2017-06-13.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of 1-((叔丁氧基羰基)氨基)-3-氧代环丁烷甲酸乙酯 in Pharmaceutical Formulations". J. Agric. Food Chem., 2016, 242, (10), 7315-7319.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-((叔丁氧基羰基)氨基)-3-氧代环丁烷甲酸乙酯 as an Impurity". J. Sep. Sci., 2018, 982, (11), 1334-1339.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 1-((tert-butoxycarbonyl)amino)-3-oxocyclobutanecarboxylate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2019, 1526, (11), 7459-7485.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate 1-((叔丁氧基羰基)氨基)-3-氧代环丁烷甲酸乙酯 Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2020, 2237, (4), 6829-6836.