Synthesis and evaluation of antitubercular activity of fluorinated 5-aryl-4-(hetero)aryl substituted pyrimidines
作者:Egor V. Verbitskiy、Svetlana A. Baskakova、Marionella A. Kravchenko、Sergey N. Skornyakov、Gennady L. Rusinov、Oleg N. Chupakhin、Valery N. Charushin
DOI:10.1016/j.bmc.2016.06.020
日期:2016.8
substitution of hydrogen (SNH) reactions starting from commercially available 5-bromopyrimidine and their antitubercular activity against Mycobacterium tuberculosis H37Rv has been explored. The outcome of the study disclose that, some of the compounds have showed promising activity in micromolar concentration against Mycobacterium tuberculosis H37Rv, Mycobacterium avium, Mycobacterium terrae, and multidrug-resistant
Synthesis, and structure–activity relationship for C(4) and/or C(5) thienyl substituted pyrimidines, as a new family of antimycobacterial compounds
作者:Egor V. Verbitskiy、Ekaterina M. Cheprakova、Pavel A. Slepukhin、Marionella A. Kravchenko、Sergey N. Skornyakov、Gennady L. Rusinov、Oleg N. Chupakhin、Valery N. Charushin
DOI:10.1016/j.ejmech.2015.05.007
日期:2015.6
Combination of the Suzuki cross-coupling and nucleophilicaromatic substitution of hydrogen (SNH) reactions proved to be a convenient method for the synthesis of C(4) and/or C(5) mono(thienyl) and di(thienyl) substituted pyrimidines from commercially available 5-bromopyrimidine. All new pyrimidines were found to be active in micromolar concentrations in vitro against H37Rv, avium, terrae, rifampicin
Dithienoquinazolines - A Convenient Synthesis by the Oxidative Photocyclization of 4,5-Dithienyl-Substituted Pyrimidines and Their Photophysical Properties
作者:Egor V. Verbitskiy、Pavel A. Slepukhin、Marina S. Valova、Ekaterina M. Cheprakova、Akesandr V. Schepochkin、Gennady L. Rusinov、Valery N. Charushin
DOI:10.1002/ejoc.201403212
日期:2014.12
A convenient synthetic route to novel thienoacene systems bearing a fused pyrimidine ring has been advanced. The commercially available 5-bromopyrimidine was used as the starting material to obtain various dithienoquinazoline systems through nucleophilic aromatic substitution of hydrogen (the SNH reaction), Suzuki cross-coupling, and oxidativephotocyclization. The redox and optical properties of some
Heteroacenes Bearing the Pyrimidine Scaffold: Synthesis, Photophysical and Electrochemical Properties
作者:Egor V. Verbitskiy、Ekaterina M. Cheprakova、Nadezhda I. Makarova、Igor V. Dorogan、Anatoly V. Metelitsa、Vladimir I. Minkin、Pavel A. Slepukhin、Tatyana S. Svalova、Alla V. Ivanova、Alisa N. Kozitsina、Gennady L. Rusinov、Oleg N. Chupakhin、Valery N. Charushin
DOI:10.1002/ejoc.201501450
日期:2016.3
A convenient synthetic route to novel 7-substituted benzo[f]thieno[3,2-h]quinazoline and 8-substituted benzo[g,h]dithieno[2,3-e:3′,2′-j]perimidine systems, bearing the fused pyrimidine ring, has been advanced. A commercially available 5-bromopyrimidine was used as the starting material to obtain various polycyclic systems through the sequence of nucleophilic aromatic substitution of hydrogen (the SNH
新型7-取代苯并[f]噻吩并[3,2-h]喹唑啉和8-取代苯并[g,h]二噻吩并[2,3-e:3',2'-j]哌啶系统的便捷合成路线,带有稠合嘧啶环,已经进步。以市售的5-溴嘧啶为原料,通过氢的亲核芳香取代(SNH反应)、Suzuki交叉偶联和氧化光环化的顺序获得各种多环体系。苯并[g,h] 二噻吩并[2,3-e:3',2'-j] 嘧啶的结构证据已通过 X 射线晶体学分析获得。已经对所有新化合物进行了分子轨道计算 (DFT) 以及氧化还原和光学测量。数据表明,报道的多环系统具有用于有机电子应用的潜力。
Microwave-assisted palladium-catalyzed C–C coupling versus nucleophilic aromatic substitution of hydrogen (SNH) in 5-bromopyrimidine by action of bithiophene and its analogues
作者:Egor V. Verbitskiy、Ekaterina M. Cheprakova、Ekaterina F. Zhilina、Mikhail I. Kodess、Marina A. Ezhikova、Marina G. Pervova、Pavel A. Slepukhin、Julia O. Subbotina、Aleksandr V. Schepochkin、Gennady L. Rusinov、Oleg N. Chupakhin、Valery N. Charushin
DOI:10.1016/j.tet.2013.04.062
日期:2013.6
5-Bromopyrimidine reacts with 2,2'-bithiophene, [2,2':5',2 '']terthiophene and 2-phenylthiophene in the presence of a palladium catalyst to give 5-(het)aryl substituted pyrimidines due to the palladium-catalyzed aryl-aryl C-C coupling. However 5-bromo-4-(het)aryl-pyrimidines have been prepared from the same starting materials through the S-N(H)-reaction catalyzed by a Lewis acid. Conditions for both types of reactions were optimized. All components of the reaction mixtures, including by-products, have been elucidated by gas-liquid chromatography/mass-spectrometry. Evidence for the structure of 4- and 5-bithiophenyl-substituted pyrimidines has first been obtained by means of X-ray crystallography analysis. Molecular orbital calculations (TDDFT), as well as the redox and optical measurements for all new compounds have also been performed. (C) 2013 Elsevier Ltd. All rights reserved.