作者:Aiming Sun、Andrew Prussia、Weiqiang Zhan、Ernest E. Murray、Joshua Doyle、Li-Ting Cheng、Jeong-Joong Yoon、Eugene V. Radchenko、Vladimir A. Palyulin、Richard W. Compans、Dennis C. Liotta、Richard K. Plemper、James P. Snyder
DOI:10.1021/jm0602559
日期:2006.8.1
Measles virus (MV) is one of the most infectious pathogens known. Despite the existence of a vaccine, over 500 000 deaths/year result from MV or associated complications. Anti-measles compounds could conceivably reverse these statistics. Previously, we described a homology model of the MV fusion protein trimer and a putative binding site near the head-neck region. The resulting model permitted the identification of two nonpeptidic entry inhibitors. Here, we present the design, synthesis, and bioevaluation of several series of fusion inhibitors and describe their structure-activity relationships (SAR). Five simply substituted anilides show low-mu M blockade of the MV, one of which (AS-48) exhibits IC50 0.6-3.0 mu M across a panel of wild-type MV strains found in the field. Molecular field topology analysis (MFTA), a 2D QSAR approach based on local molecular properties (atomic charges, hydrogen-bonding capacity and local lipophilicity), applied to the anilide series suggests structural modifications to improve potency.
Discovery of Potent and Noncovalent Reversible EGFR Kinase Inhibitors of EGFR<sup>L858R/T790M/C797S</sup>
reversible epidermalgrowthfactorreceptor inhibitors of EGFRL858R/T790M/C797S. One of the most promising compounds, 25g, inhibited the enzymatic activity of EGFRL858R/T790M/C797S with an IC50 value of 2.2 nM. Cell proliferation assays showed that 25g effectively and selectively inhibited the growth of EGFRL858R/T790M/C797S-dependent cells. This series of compounds, which occupy both the ATP binding site
Target Hopping from Protein Kinases to PXR: Identification of Small-Molecule Protein Kinase Inhibitors as Selective Modulators of Pregnane X Receptor from TüKIC Library
ligand binding and cellularprotein interaction assays classified the novel compounds as mixed competitive/noncompetitive, passive antagonists, which bind PXR directly and disrupt its interaction with coregulatory proteins. Expression analysis of prototypical PXR target genes ABCB1 and CYP3A4 in LS174T colorectal cancer cells and HepaRG hepatocytes revealed novel antagonists as selective receptor modulators