Alkyne-substituted diminazene as G-quadruplex binders with anticancer activities
摘要:
G-quadruplex ligands have been touted as potential anticancer agents, however, none of the reported G-quadruplex-interactive small molecules have gone past phase II clinical trials. Recently it was revealed that diminazene (berenil, DMZ) actually binds to G-quadruplexes 1000 times better than DNA duplexes, with dissociation constants approaching 1 nM. DMZ however does not have strong anticancer activities. In this paper, using a panel of biophysical tools, including NMR, FRET melting assay and FRET competition assay, we discovered that monoamidine analogues of DMZ bearing alkyne substitutes selectively bind to G-quadruplexes. The lead DMZ analogues were shown to be able to target c-MYC G-quadruplex both in vitro and in vivo. Alkyne DMZ analogues display respectable anticancer activities (single digit micromolar GI(50)) against ovarian (OVCAR-3), prostate (PC-3) and triple negative breast (MDA-MB-231) cancer cell lines and represent interesting new leads to develop anticancer agents. (C) 2016 Elsevier Masson SAS. All rights reserved.
Synthesis and characterization of recyclable and recoverable MMT-clay exchanged ammonium tagged carbapalladacycle catalyst for Mizoroki–Heck and Sonogashira reactions in ionic liquid media
作者:Vasundhara Singh、Rajni Ratti、Sukhbir Kaur
DOI:10.1016/j.molcata.2010.10.015
日期:2011.1
carbapalladacycle 5 assists in the pillaring process and enhances the organophilicity of catalyst 6 in the interlayers of clay. The catalytic activity in ammonium based ionic liquid [TMBA] NTf2 of both the homogeneous and heterogeneous recyclable catalysts 5 and 6 respectively in micromolar concentration of palladium has been tested for Mizoroki–Heck and Sonogashira reactions in good yields with high TON/TOF and
donor ligands were mandatory for the catalytic cross-coupling of Csp2–Csp bonds. Herein, we wish to report α,β-ynones as σ-, π-electron donating ligands for copper catalyzed Sonogashira-type reaction. As low as 0.25–2.5 mol% of L11 (3-(4-bromophenyl)-1-(4-methoxyphenyl)prop-2-yn-1-one) significantly accelerated the 0.1–1.0 mol% of CuI catalyzed cross-coupling of aryliodides with terminalalkynes and
Cu/Oxalic Diamide-Catalyzed Coupling of Terminal Alkynes with Aryl Halides
作者:Ying Chen、Sailuo Li、Lanting Xu、Dawei Ma
DOI:10.1021/acs.joc.2c02882
日期:2023.3.3
6-Dimethylphenyl)-N2-(pyridin-2-ylmethyl)oxalamide (DMPPO) was revealed to be a more effective ligand for copper-catalyzedcouplingreaction of (hetero)aryl halides with 1-alkynes than previously reported ones. Only 3 mol % CuCl and DMPPO are required to make the coupling complete at 100 °C (for bromides) and 80 °C (for iodides). Both (hetero)aryl and alkyl substituted 1-alkynes worked well under these conditions
N 1 -(2,6-二甲基苯基)- N 2 -(吡啶-2-基甲基)草酰胺 (DMPPO) 被发现是铜催化的(杂)芳基卤化物与 1-炔烃偶联反应的更有效配体以前报道过的。仅需 3 mol% CuCl 和 DMPPO 即可在 100 °C(溴化物)和 80 °C(碘化物)下完成偶联。(杂)芳基和烷基取代的 1-炔烃在这些条件下都表现良好,导致内部炔烃的形成具有很大的多样性。
LINKED DIARYL COMPOUNDS WITH ANTICANCER PROPERTIES AND METHODS OF USING THE SAME
申请人:University of Maryland, College Park
公开号:US20170174620A1
公开(公告)日:2017-06-22
Provided are compositions comprising linked diaryl compounds that possess anticancer properties. Methods of use are also disclosed herein. The method comprises administering an effective amount of a compound described herein to an individual in need thereof.
[EN] LINKED DIARYL COMPOUNDS WITH ANTICANCER PROPERTIES AND METHODS OF USING THE SAME<br/>[FR] COMPOSÉS BIARYLES LIÉS À PROPRIÉTÉS ANTICANCÉREUSES ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV MARYLAND
公开号:WO2016014674A1
公开(公告)日:2016-01-28
Provided are compositions comprising linked diaryl compounds that possess anticancer properties. Methods of use are also disclosed herein. The method comprises administering an effective amount of a compound described herein to an individual in need thereof.