Nowak P, Schröder R, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3852147 A1, 2017-10-03.
Park J H, Hughes D C, Mueller T. "Method for the Synthesis of Tert-butyl 2-amino-4-chloro-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxylate" [P]. US Patent, US 9640917 B2, 2017-12-03.
Lee S K, Chen K W, Hughes D C. "A Process for Preparing High-Purity Tert-butyl 2-amino-4-chloro-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxylate" [P]. US Patent, US 9493720 B2, 2017-01-25.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2020, 2454, (8), 308-315.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2012, 2297, (6), 5130-5138.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Tert-butyl 2-amino-4-chloro-5,7-dihydro-6H-pyrrolo[3,4-d]pyrimidine-6-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2015, 2078, 9979-10006.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2018, 1718, (8), 9765-9795.