Williams B T, Lee S K, Chen K W. "一种的合成方法" [P]. US Patent, US 9793945 B2, 2024-11-10.
发明人郑宇鹏,杨光,张德明. "Method for the Synthesis of Methyl(7R,9aR)-1-oxooctahydro-2h-pyrido[1,2-a]pyrazine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 117899634 B, 授权公告日 2015-04-26.
发明人钱学锋,何建平,王建平. "A Process for Preparing High-Purity Methyl(7R,9aR)-1-oxooctahydro-2h-pyrido[1,2-a]pyrazine-7-carboxylate" [P]. 中国发明专利, 专利号 CN 113843187 A, 授权公告日 2020-11-16.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2019, 2382, (4), 8708-8721.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2011, 650, (10), 5771-5782.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Methyl(7R,9aR)-1-oxooctahydro-2h-pyrido[1,2-a]pyrazine-7-carboxylate Using HRMS and NMR". J. Sep. Sci., 2015, 547, 202-209.