Discovery and biological evaluation of 4,6-pyrimidine analogues with potential anticancer agents as novel colchicine binding site inhibitors
作者:Jifa Zhang、Lun Tan、Chengyong Wu、Yuyan Li、Hao Chen、Yinghuan Liu、Yuxi Wang
DOI:10.1016/j.ejmech.2022.115085
日期:2023.2
Novel 4,6-pyrimidine analogues were designed and synthesized as colchicine binding site inhibitors (CBSIs) with potent antiproliferative activities. Among them, compound 17j has the most potent activities against 6 human cancer cell lines with IC50 values from 1.1 nM to 4.4 nM, which was 76 times higher than the lead compound 3 in A549 cells. The co-crystal structure of 17j in complex with tubulin
Single‐Atom Iron Catalyst as an Advanced Redox Mediator for Anodic Oxidation of Organic Electrosynthesis
作者:Xin‐Yu Wang、Yong‐Zhou Pan、Jiarui Yang、Wen‐Hao Li、Tao Gan、Ying‐Ming Pan、Hai‐Tao Tang、Dingsheng Wang
DOI:10.1002/anie.202404295
日期:2024.7
We synthesized a single-atom iron catalyst (Fe-SA@NC), which exhibits good conversion efficiency in organic electro oxidation as an advanced redox mediator. This study provides valuable insights into the design of catalytic systems for organic tandem reactions from an inorganic chemistry aspect.
Pyrrolo[3,2-<i>b</i>]quinoxaline Derivatives as Types I<sub>1/2</sub> and II Eph Tyrosine Kinase Inhibitors: Structure-Based Design, Synthesis, and <i>in Vivo</i> Validation
The X-ray crystal structures of the catalytic domain of the EphA3 tyrosine kinase in complex with two type I inhibitors previously discovered in silico (compounds A and B) were used to design type I-1/2 and II inhibitors. Chemical synthesis of about 25 derivatives culminated in the discovery of compounds 11d (type I-1/2), 7b, and 7g (both of type II), which have low-nanomolar affinity for Eph kinases in vitro and a good selectivity profile on a panel of 453 human kinases (395 nonmutant). Surface plasmon resonance measurements show a very slow unbinding rate (1/115 min) for inhibitor 7m. Slow dissociation is consistent with a type II binding mode in which the hydrophobic moiety (trifluoromethyl-benzene) of the inhibitor is deeply buried in a cavity originating from the displacement of the Phe side chain of the so-called DFG motif as observed in the crystal structure of compound 7m. The inhibitor 11d displayed good in vivo efficacy in a human breast cancer xenograft.