147127-19-3Relevant articles and documents
Tenofovirpurification method
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Paragraph 0047-0049; 0064, (2020/01/25)
The invention provides a tenofovir purification method, which comprises: S1) dissolving a tenofovir crude product in an alkali liquid, and adjusting the pH value of the system to 6-12; and S2) adjusting the pH value of the system to 2.8-3.4 with an acid, and separating the solid to obtain a pure tenofovir product. According to the invention, tenofovir is dissolved in an alkaline environment to carry out a hydrolysis reaction on the main impuritycondensation impurity, and the product can be precipitated in an acid environment, so that various impurities in the tenofovir can be effectively reduced, the product quality is improved, the yield and the purity are greatly improved, the operation is easy and convenient, and the method is easy to apply to industrial production.
Inhibition of human purine nucleoside phosphorylase by tenofovir phosphate congeners
Votruba, Ivan,Tryznova, Jana,Brehova, Petra,Tloustova, Eva,Horska, Kvetoslava,Fanfrlik, Jindrich,Prenosil, Ondrej,Holy, Antonin
experimental part, p. 1249 - 1257 (2011/09/30)
The structure-activity study on the phosphates of phosphonomethoxypropyl derivatives of purine bases interacting with human purine nucleoside phosphorylase has shown that the most efficient inhibitors of the enzyme are (R)- and (S)-PMPGp with Ki ~ 1.9 × 10-8 and/or 2.2 × 10-8 mol/l. The kinetic experiments have proven, with the exception of both enantiomers of PMP-8-BrDAPp, strictly competitive character of inhibition for all ANP monophosphates tested. Bromine derivatives exhibited uncompetitive and mixed type of inhibition as well. These results were confirmed by docking studies. The substitution of purine moiety with the bromine at the position 8 lead to an allosteric binding of these compounds toward the enzyme.
SYNTHESIS OF ENANTIOMERIC N-(2-PHOSPHONOMETHOXYPROPYL) DERIVATIVES OF PURINE AND PYRIMIDINE BASES. I. THE STEPWISE APPROACH
Holy, Antonin,Masojidkova, Milena
, p. 1196 - 1212 (2007/10/02)
The (R)- and (S)-N-(2-phosphonomethoxypropyl) derivatives of purine and pyrimidine bases (PMP derivatives) exhibit very high activity against retroviruses.This paper describes the synthesis of enantiomeric 9-(2-phosphonomethoxypropyl)adenines (I and XXVII), 9-(2-phosphonomethoxypropyl)-2,6-diaminopurines (II and XXXI), 9-(2-phosphonomethoxypropyl)guanines (III and XXIX) and 1-(R)-(2-phosphonomethoxypropyl)cytosine (XIX) by alkylation of N-protected N-(2-hydroxypropyl) derivatives of the corresponding bases with bis(2-propyl) p-toluenesulfonyloxymethylphosphonate (X), followed by stepwise N- and O-deprotection of the intermediates.The key intermediates, N-(2-hydropxypropyl) derivatives IX and XXV, were obtained by alkylation of the appropriate heterocyclic base with (R)- or (S)-2-(2-tetrahydropyranyloxy)propyl p-toluenesulfonate (VII or XXIII) ans acid hydrolysis of the resulting N- derivatives VIII and XXII.The chiral synthons were prepared by tosylation of (R)- or (S)-2-(2-tetrahydropyranyloxy)propanol (VI or XXI) available by reduction of enantiomeric alkyl 2-O-tetrahydropyranyllactates V and XXI with sodium bis(2-methoxyethyoxy)aluminum hydride.This approach was used for the synthsis of cytosine, adenine and 2,6-diaminopurine derivatives, while compounds derived from guanine were prepared by hydrolysis of 2-amino-6-chloropurine intermediates.Cytosine derivative IXe was also synthesized by alkylation of 4-methoxy-2-pyrimidone followed by ammonolysis of the intermediate IXf.