Synthesis and evaluation of novel α-substituted chalcones with potent anti-cancer activities and ability to overcome multidrug resistance
作者:Sharon Riaz、Maheen Iqbal、Rahim Ullah、Rida Zahra、Ghayoor Abbas Chotana、Amir Faisal、Rahman Shah Zaib Saleem
DOI:10.1016/j.bioorg.2019.03.014
日期:2019.6
A series of forty α-substituted chalcones were synthesized and screened for their antiproliferative activities against HCT116 (colorectal) and HCC1954 (breast) cancer cell lines. Compounds 5a and 5e were found to be the most potent compounds with GI50 values of 0.63 µM and 0.725 µM in HCC1954 cell line and 0.69 µM and 1.59 µM in HCT116 cell line, respectively. Both compounds induced a G2/M cell cycle
5,6-Methylenedioxy-2-nitro-3-phenylbenzofurans, optionally substituted on the 3-phenyl group, which are active as antimicrobial agents, processes for their use and intermediates therefor.
We report herein the first copper-catalyzed C-2 difluoromethylation of furans and benzofurans. The developed methodology allows the selective introduction of the CF2CO2Et moiety at C-2 using CuI as a catalyst. This process was applied to a broad range of furans and benzofurans, giving the functionalized products in moderate to good yields. The resulting products were then decarboxylated to afford the highly valuable C-2-CF2H-substituted furans and benzofurans in good yields.
US4174403A
申请人:——
公开号:US4174403A
公开(公告)日:1979-11-13
Ga(OTf)3-mediated synthesis of substituted benzofurans
作者:Heui-Sin Wang、Chieh-Kai Chan、Meng-Yang Chang
DOI:10.1016/j.tet.2016.07.007
日期:2016.8
intramolecular cyclodehydration of the resulting α-aryloxyaryl ketones, has been developed. The use of various metal triflates was investigated for a facile approach and efficient transformation. Pentacyclic benzophenanthrofurans 7 were prepared via photolytic annulations of 5.