已经描述了一种合成2-甲基-6,7-二苯基-吡唑并[1,5- a ]嘧啶的简便易行的新方法。在甲醇钠存在下,异黄酮与3-氨基-5-甲基吡唑的环缩合反应以中等至良好的产率得到了稠合的2-甲基-6,7-二苯基吡唑并[1,5- a ]嘧啶。获得了一系列20种新化合物,并通过FT-IR,NMR和元素分析对其进行了表征。
Arylation of <i>ortho</i>-Hydroxyarylenaminones by Sulfonium Salts and Arenesulfonyl Chlorides: An Access to Isoflavones
作者:Satenik Mkrtchyan、Viktor O. Iaroshenko
DOI:10.1021/acs.joc.0c02294
日期:2021.4.2
diversities of bench-stable and easy-to-use sulfonium salts and arenesulfonyl chlorides. Both developed methods, namely the light-mediated photoredox and electrophilic arylation, showed good efficiency, and are feasible for the preparation of 3-arylchromones in good-to-excellent yields. This work showcases the first described attempt where the sulfonium salts and arenesulfonyl chlorides were successfully utilized
An efficient cross-coupling of 3-iodochromones with triarylbismuths under catalytic palladium conditions is reported. Triarylbismuths were employed as substoichiometric multicoupling nucleophiles for the synthesis of a variety of substituted isoflavones. Under the established protocol, cross-coupling reactions were found to be very efficient, furnishing high yields of products.
Mechanochemical Ni‐Catalysed Arylation of
<i>ortho</i>
‐Hydroxyarylenaminones: Synthesis of Isoflavones
作者:Satenik Mkrtchyan、Michał Jakubczyk、Suneel Lanka、Muhammad Yar、Tariq Mahmood、Khurshid Ayub、Mika Sillanpää、Christine M. Thomas、Viktor O. Iaroshenko
DOI:10.1002/adsc.202200645
日期:2022.10.18
describes two new synthetic methods for the preparation of isoflavones following the Ni-catalysed domino arylation reactions of the vast range of ortho-hydroxyarylenaminones utilising aromatic bromides as well as carboxylic acids. The presented protocols tolerated significant variation of all coupling partners and enabled synthesis of isoflavone library of twenty-three representatives. This is the first
Synthesis of 5,6-Diarylpyridin-2(1<i>H</i>)-ones from Isoflavones
作者:Mulin Zhu、Zunting Zhang、Dong Xue、Jinfeng Qiao、Yong Liang、Stanislaw F. Wnuk
DOI:10.1002/cjoc.201300279
日期:2013.8
AbstractA simple method for the cyclocondensation of substituted isoflavones with cyanoacetamide in the presence of sodium hydroxide to give an array of 3‐cyano‐5,6‐diarylpyridin‐2(1H)‐ones in good yields is reported.
Synthesis, antimycobacterial evaluation and pharmacophore modeling of analogues of the natural product formononetin
The synthesis and antimycobacterial activity of formononetin analogues is hereby reported. Formononetin and its analogue 11E showed 88% and 95% growth inhibition, respectively, against the H37Rv strain of Mycobacterium tuberculosis. Pharmacophore modeling studies indicated that the presence of a hydroxyl group in formononetin and its analogues, is crucial for maintaining activity. (C) 2015 Elsevier Ltd. All rights reserved.