342631-41-8Relevant articles and documents
Preparation method of high-purity tenofovir alafenamide impurity TAF-Y
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Paragraph 0040; 0041; 0042; 0043; 0044; 0045, (2019/02/10)
The invention discloses a preparation method of a high-purity tenofovir alafenamide impurity TAF-Y. The preparation method comprises the following steps of performing chlorination on 9-[(R)-2-[[(phenoxyl phosphinyl)methoxyl]propyl]]adenine (TAF-M1), so as
A key intermediate for the preparation of fumaric acid for fuwei ira phenol amine (by machine translation)
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Paragraph 0044-0048, (2018/11/27)
The invention the invention belongs to the field of drug synthesis, relates to a pharmaceutical intermediates, in particular to a method for the preparation of a key intermediate in the fumaric acid for fuwei ira phenol amine. The present invention provid
Preparation method of amino phosphate ester derivatives and preparation method of intermediates and intermediates characterized in that at 0 DEG C -100 DEG C and in a solvent, the compound represented by the general formula (II) is subjected to an amino deprotection reaction in the presence of an alkaline reagent, an acidic reagent or a hydrogenolysis catalyst
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Page/Page column 30; 31, (2017/10/14)
The present invention relates to a process for the preparation of an amino phosphate ester derivative having antiviral activity as shown in the general formula (I) and a process for the preparation of intermediates and intermediates thereof, characterized in that at 0 DEG C -100 DEG C and in a solvent, the compound represented by the general formula (II) is subjected to an amino deprotection reaction in the presence of an alkaline reagent, an acidic reagent or a hydrogenolysis catalyst; the solvent used in the reaction is selected one or two from the group consisting of alcohol solvents, aromatic hydrocarbon solvents, ether solvents, halogenated alkane solvents, ester solvents, ketone solvents, lipid solvents, amide solvents, sulfoxide solvents and water; the acidic reagent is selected from organic acids or inorganic acids; the alkaline reagent is selected one or two from the group consisting of alkali metal hydroxides, alkaline earth metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates and organic amines.