Synthesis and biological evaluation of 1-substituted-3(5)-(6-methylpyridin-2-yl)-4-(quinoxalin-6-yl)pyrazoles as transforming growth factor-β type 1 receptor kinase inhibitors
作者:Cheng Hua Jin、Domalapally Sreenu、Maddeboina Krishnaiah、Vura Bala Subrahmanyam、Kota Sudhakar Rao、Annaji Venkata Nagendra Mohan、Chul-Yong Park、Jee-Yeon Son、Do-Hyun Son、Hyun-Ju Park、Yhun Yhong Sheen、Dae-Kee Kim
DOI:10.1016/j.ejmech.2011.05.063
日期:2011.9
A series of 1-substituted-3(5)-(6-methylpyridin-2-yl)-4-(quinoxalin-6-yl)pyrazoles 14a-d, 15a-d, 17a, 17b, 18a-d, 19a, and 19b has been synthesized and evaluated for their ALK5 inhibitory activity in an enzyme assay and in a cell-based luciferase reporter assay. The 2-[3-(6-methylpyridin-2-yl)-4-(quinoxalin-6-yl)-1H-pyrazol-1-yl]-N-phenylethanethioamide (18a) inhibited ALK5 phosphorylation with an IC50 value of 0.013 mu M and showed 80% inhibition at 0.1 mu M in a luciferase reporter assay using HaCaT cells permanently transfected with p3TP-luc reporter construct. (C) 2011 Elsevier Masson SAS. All rights reserved.