Johnson M A, Roberts E F, Park J H. "一种的合成方法" [P]. US Patent, US 10767243 B2, 2016-02-22.
Rossi M, Martínez F, Mueller T C. "Method for the Synthesis of 6-(((Benzyloxy)carbonyl)amino)-2-(tert-butoxycarbonyl)-2-azaspiro[3.3]Heptane-6-carboxylic acid" [P]. European Patent, EP 3246996 A1, 2019-01-26.
Kumar R, Johnson M A, Davis P L. "A Process for Preparing High-Purity 6-(((Benzyloxy)carbonyl)amino)-2-(tert-butoxycarbonyl)-2-azaspiro[3.3]Heptane-6-carboxylic acid" [P]. US Patent, US 11741671 B2, 2023-06-01.
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". Talanta, 2025, 2036, 2142-2169.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2013, 1134, (3), 9732-9757.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 6-(((Benzyloxy)carbonyl)amino)-2-(tert-butoxycarbonyl)-2-azaspiro[3.3]Heptane-6-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2011, 1276, (3), 2849-2852.