Non-hydrolysable analogues of inorganic pyrophosphate as inhibitors of hepatitis C virus RNA-dependent RNA-polymerase
作者:D. V. Yanvarev、A. N. Korovina、N. N. Usanov、S. N. Kochetkov
DOI:10.1134/s1068162012020124
日期:2012.3
Inorganic pyrophosphate (PPi) is the product of the polymerization reaction catalyzed by DNA- and RNA-polymerases. A number of novel non-hydrolsable PPi analogues was synthesized; some of them inhibited the polymerization reaction catalyzed by hepatitisCvirusRNA-dependentRNA-polymerase (NS5B). A new pharmacophore based on a non-hydrolysable methylenediphosphonate backbone has been developed. The
无机焦磷酸盐 (PPi) 是由 DNA 和 RNA 聚合酶催化的聚合反应产物。合成了许多新型的不可水解的 PPi 类似物;其中一些抑制了丙型肝炎病毒 RNA 依赖性 RNA 聚合酶 (NS5B) 催化的聚合反应。已开发出基于不可水解的亚甲基二膦酸酯骨架的新药效团。介绍了 12 种双膦酸盐的构效关系分析,并说明了对 NS5B 聚合酶活性抑制至关重要的结构特征。
31P Hyperfine interaction in a new type of phosphorus-containing iminoxy free radicals. An ESR study
作者:Zdzislaw Siatecki、Piotr J. Chmielewski、Adam Jezierski
DOI:10.1002/mrc.1260300213
日期:1992.2
Iminoxyradicals of a new type, having the general formula RC(NO˙)P(O)(OEt)2, were synthesized and characterized by means of ESR spectroscopy. The presence of two isomers due to the different position of the CNO˙ fragment with respect to the R substituent and the P atom, and the relative stability of the isomers, was established. The influence of the R substituent on the relative population of the
合成了一种具有通式RC(NO·)P(O)(OEt)2的新型亚胺氧基自由基,并通过ESR光谱对其进行了表征。由于 CNO• 片段相对于 R 取代基和 P 原子的不同位置,两种异构体的存在以及异构体的相对稳定性已被确定。发现了 R 取代基对异构体相对数量的影响。异构体的氮超精细常数相差约 10%,而含量较少的异构体的磷超精细常数约为 6 倍,达到 60 G。发现该超精细常数的值与 Dimroth 之间存在线性相关性–Reichardt ET(30) 溶剂参数。
Studies on Organophosphorus Compounds; 99: A Novel Stereoselective Synthesis of Dialkyl (Z)-1-Alkyl-2-ethoxycarbonyl-2-formylaminoeth-1-enylphosphonates
作者:Weisheng Huang、Yixin Zhang、Chengye Yuan
DOI:10.1055/s-1997-1164
日期:1997.2
Cu2O-Catalyzed reaction of ethyl isocyanoacetate with dialkyl 1-oxoalkylphosphonates afforded predominantly dialkyl (Z)-1-alkyl-2-ethoxycarbonyl-2-formylaminoeth-1-enylphosphonates.
Sigmatropic isomerizations in azaallyl systems: XXI. Alkanimidoylphosphonates and their prototropic and phosphorotropic isomers
作者:P. P. Onys’ko、T. V. Kim、E. I. Kiseleva、A. D. Sinitsa
DOI:10.1007/s11176-005-0110-8
日期:2004.12
Synthetic procedures for alkanimidoylphosphoryl derivatives with α-hydrogen atoms in the N-alkyl radical are developed. Data on the effect of substituents at the carbon and phosphorus atoms on the facility of prototropic transitions in the C=N-C triad are summarized. The most facile proton transfer occurs in the N-benzyl derivatives, and the prototropic isomer is the more stable, the stronger the electron-acceptor power of the substituent at the sp 3-carbon atom of the azaallyl triad. The proton transfer in N-(α-phenethyl)-trifluoroacetimidoylphosphonates proceeds selectively, which allows preparation of enantiomerically enriched derivatives of α-aminotrifluoroethylphosphonic acid. A specific effect of substituents at the phosphorus atom on the prototropism attendant on phosphorylation of imidoyl chlorides is demonstrated.
Generation of Acyl Anion Equivalents from Acylphosphonates via Phosphonate−Phosphate Rearrangement: A Highly Practical Method for Cross-Benzoin Reaction
作者:Ayhan S. Demir、Ömer Reis、A. Çiǧdem İǧdir、İlker Esiringü、Serkan Eymur
DOI:10.1021/jo051811u
日期:2005.12.1
Acylphosphonates are potent acyl anion precursors that generate acyl anion equivalents under the promotion of cyanide anion via phosphonate−phosphate rearrangement. These anions readily react with aldehydes to provide cross-benzoin products. In this way it is possible to synthesize a variety of aromatic−aromatic, aromatic−aliphatic, and aliphatic−aromatic benzoins. Moreover the reaction of benzoylphosphonate