2098457-93-1Relevant articles and documents
Preparation method of apixaban impurity 1
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Paragraph 0023; 0024, (2021/01/11)
The invention provides a preparation method of an apixaban impurity 1, and relates to the technical field of drug impurity synthesis. The method comprises the following steps: by taking a compound 1-(4-aminophenyl)-5, 6-dihydro-3-(4-morpholinyl)-2-(1H)-pyridone as an initial raw material, carrying out amination reduction acid amine condensation, cyclization-elimination and amine ester exchange three-step reaction to obtain the apixaban impurity 1; according to the method, the reaction raw materials are simple and easy to obtain, the reaction conditions and experimental operation are simple, harsh conditions, expensive reagents, equipment and the like are not needed, meanwhile, the reaction conditions are mild, the process is simple, the reaction time is short, the yield is good, and the apixaban impurity 1 with higher reaction yield and very high impurity purity can be obtained. The invention provides a reliable impurity reference substance for quality control research of apixaban, andhas great significance.