The present invention relates to antimalarial compounds. More specifically, the present invention relates to novel substituted quinolone derivatives of formula (I) and related quinoline derivatives of formula (II) as defined herein that possess potent antimalarial activity. The present invention also relates to processes for the preparation of these quinolone and quinoline derivatives, to pharmaceutical compositions comprising them and to their use as therapeutic agents for the treatment and/or prevention of malaria.
Rhodium(III)-Catalyzed CC and CO Coupling of Quinoline<i>N</i>-Oxides with Alkynes: Combination of CH Activation with O-Atom Transfer
作者:Xueyun Zhang、Zisong Qi、Xingwei Li
DOI:10.1002/anie.201406747
日期:2014.9.26
[Cp*RhIII]‐catalyzed CH activation of arenes assisted by an oxidizing NO or NN directing group has allowed the construction of a number of hetercycles. In contrast, a polar NO bond is well‐known to undergo O‐atom transfer (OAT) to alkynes. Despite the liability of NO bonds in both CH activation and OAT, these two important areas evolved separately. In this report, [Cp*RhIII] catalysts integrate
Regioselective Reaction of Heterocyclic <i>N</i>-Oxides, an Acyl Chloride, and Cyclic Thioethers
作者:Przemyslaw Frei、D. Heulyn Jones、Steven T. Kay、Jayde A. McLellan、Blair F. Johnston、Alan R. Kennedy、Nicholas C. O. Tomkinson
DOI:10.1021/acs.joc.7b02457
日期:2018.2.2
cyclic thioether in the presence of triethylamine leads to the corresponding 2-functionalized product in up to a 74% isolated yield. The transformation can also be accomplished with alternative nitrogen containing heterocycles, including quinolines, pyrimidines, and pyrazines. To expand the scope of the transformation, diisopropyl ether can be used as the reaction medium to allow for the use of solid
Visible-Light-Promoted C2 Selective Arylation of Quinoline and Pyridine <i>N</i>-Oxides with Diaryliodonium Tetrafluoroborate
作者:Dazhi Li、Ce Liang、Zaixing Jiang、Junzheng Zhang、Wang-Tao Zhuo、Fan-Yue Zou、Wan-Peng Wang、Guo-Lin Gao、Jinzhu Song
DOI:10.1021/acs.joc.9b02933
日期:2020.2.21
visible-light-promoted C2 selective arylation of quinoline and pyridineN-oxides, with diaryliodonium tetrafluoroborate as an arylation reagent, using eosin Y as a photocatalyst for the construction of N-heterobiaryls was presented. This methodology provided an efficient way for the synthesis of 2-aryl-substituted quinoline and pyridineN-oxides. This strategy has the following advantages: specific regioselectivity
Rh(III)-catalyzed C8 arylation of quinoline N-oxides with arylboronic acids
作者:Yuanqiong Huang、Xueli Lv、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1016/j.cclet.2019.11.028
日期:2020.6
Abstract Herein, we report the first RhIII-catalyzed regioselective C8 arylation of quinoline N-oxides with commercially available arylboronic acids as coupling partners. This procedure is simple, and the reaction shows perfect regioselectivity, a broad substrate scope, and isolated yields of up to 92%. We demonstrate the utility of the reaction by using it for late-stage functionalization of a fungicide