Design, Synthesis, and Biological Evaluation of New Diaminoquinazolines as β-Catenin/Tcf4 Pathway Inhibitors
摘要:
More than 50 new diaminoquinazoline derivatives have been synthesized and evaluated in a colon carcinoma cell growth inhibition assay using HCT116 and SW480 cells. Twenty compounds with good cell growth inhibitory activities (<4 mu M) were tested as inhibitors of the beta-catenin/T cell transcription factor 4 (Tcf4) signaling pathway using a HCT116 cell-based luciferase reporter assay. Results from the biological activities as well as the comparative molecular field analysis (CoMFA) of the properties of the molecules yielded a preliminary structure-activity relationship (SAR). Three potent compounds, 74, 78, and 86, showed IC50 values <1 mu M for growth inhibition of HCT116 cells and similar to 1 mu M for SW480 cells, as well as IC50 values of 1.5-2.5 mu M for HCT116 cells with the luciferase reporter assay.
N-4-Substituted-benzyl-N′-tert-butylbenzyl thioureas as vanilloid receptor ligands: investigation on the role of methanesulfonamido group in antagonistic activity
摘要:
A series of N-4-substituted-benzyl-N'-tert-butylbenzyl thioureas were prepared for the study of their agonistic/antagonistic activities to the vanilloid receptor in rat DRG neurons. Their structure-activity relationship reveals that not only the two oxygens and amide hydrogen of sulfonamido group, but also the optimal size of methyl in methanesulfonamido group play an integral role for the antagonistic activity on vanilloid receptor. (C) 2003 Elsevier Ltd. All rights reserved.
An Acid‐Controlled Method for the Regioselective Functionalization of Anilines over Aliphatic Amines
作者:Bowen Li、Yulun Hu、Gregory P. Tochtrop
DOI:10.1002/chem.202301336
日期:2023.10.23
Regioselective functionalization of anilines in the presence of aliphaticamines is illustrated utilizing classic conditions for the Baeyer-Mills reaction. Further, the defined principles of reactivity are shown to be broadly extended to other electrophiles.