Synthesis and biological evaluation of 1-substituted-3-(6-methylpyridin-2-yl)-4-([1,2,4]triazolo[1,5-a]pyridin-6-yl)pyrazoles as transforming growth factor-β type 1 receptor kinase inhibitors
作者:Cheng Hua Jin、Maddeboina Krishnaiah、Domalapally Sreenu、Vura Bala Subrahmanyam、Kota Sudhakar Rao、Annaji Venkata Nagendra Mohan、Chul-Yong Park、Jee-Yeon Son、Yhun Yhong Sheen、Dae-Kee Kim
DOI:10.1016/j.bmcl.2011.08.064
日期:2011.10
A series of 1-substituted-3-(6-methylpyridin-2-yl)-4-([1,2,4]triazolo[1,5-a]pyridin-6-yl)pyrazoles 14a-ae, 16a, 16b, and 21a-c has been prepared and evaluated for their ALK5 inhibitory activity in an enzyme assay and in a cell-based luciferase reporter assay. The 4([1,2,4]triazolo[1,5-a]pyridin-6-yl)-N-(4-methoxyphenyl)-3-(6-methylpyridin-2-yl)-1H-pyrazole-1-carbothioamide (14n) inhibited ALK5 phosphorylation with IC50 value of 0.57 nM and showed 94% inhibition at 100 nM in a luciferase reporter assay using HaCaT cells permanently transfected with p3TP-luc reporter construct. (C) 2011 Elsevier Ltd. All rights reserved.