Williams B T, Schröder R, Anderson J P. "一种的合成方法" [P]. US Patent, US 11865304 B2, 2021-04-12.
Stevens L M, Johnson M A, Anderson J P. "Method for the Synthesis of (S)-2-((R)-3-((tert-Butoxycarbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid" [P]. US Patent, US 11852441 B2, 2021-04-09.
发明人周伟,徐明华,高志强. "A Process for Preparing High-Purity (S)-2-((R)-3-((tert-Butoxycarbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid" [P]. 中国发明专利, 专利号 CN 108780959 A, 授权公告日 2025-06-03.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2013, 1150, 2103-2133.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2023, 616, (2), 9153-9160.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of (S)-2-((R)-3-((tert-Butoxycarbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid Using HRMS and NMR". J. Sep. Sci., 2020, 819, (2), 7572-7601.