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
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 and biological evaluation of novel 2,4,5-substituted pyrimidine derivatives for anticancer activity
作者:Fuchun Xie、Hongbing Zhao、Lizhi Zhao、Liguang Lou、Youhong Hu
DOI:10.1016/j.bmcl.2008.09.067
日期:2009.1
A series of novel 2,4,5-substituted pyrimidine derivatives were synthesized and evaluated for inhibition against the human hepatocellular carcinoma BEL-7402 cancer cell line. Several compounds showed potent inhibition with an IC50 value less than 0.10 mu M. Structure-activity relationships for this class of compounds at the 2- and 5-position of the pyrimidine scaffold have been elucidated. The most active compound 7gc showed good inhibition of several different human cancer cell lines with IC50 values from 0.024 to 0.55 mu M. (C) 2008 Elsevier Ltd. All rights reserved.
An efficient RuPHOX−Ru catalyzed asymmetric cascade hydrogenation of 3-substitutedchromones has been achieved under mild reaction conditions, affording the corresponding chiral 3-substituted chromanols in high yields with excellent enantio- and diastereoselectivities. A dynamic kinetic resolution process occurs during the subsequent hydrogenation of the C=O double bond, which is responsible for the