Rational design of apoptosis signal-regulating kinase 1 inhibitors: discovering novel structural scaffold

Eur J Med Chem. 2013 Mar:61:104-15. doi: 10.1016/j.ejmech.2012.09.022. Epub 2012 Sep 21.

Abstract

Increased activity of apoptosis signal-regulating kinase 1 (ASK1) is associated with a number of human disorders and the inhibitors of ASK1 may become important compounds for pharmaceutical application. Here we report novel ASK1 inhibitor scaffold, namely 5-(5-Phenyl-furan-2-ylmethylene)-2-thioxo-thiazolidin-4-one, that has been identified using virtual screening and biochemical tests. A series of derivatives has been synthesized and evaluated in vitro towards human protein kinase ASK1. It was revealed that the most active compounds 4-((5Z)-5-{[5-(4-bromophenyl)-2-furyl]methylene}-4-oxo-2-thioxo-1,3-thiazolidin-3-yl)butanoic acid and 6-((5Z)-5-{[5-(4-bromophenyl)-2-furyl]methylene}-4-oxo-2-thioxo-1,3-thiazolidin-3-yl)hexanoic acid inhibit ASK1 with IC50 of 0.2 μM. Structure-activity relationships of 33 derivatives of 5-(5-Phenyl-furan-2-ylmethylene)-2-thioxo-thiazolidin-4-one have been studied and binding mode of this chemical class has been predicted.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Butyrates / chemical synthesis
  • Butyrates / chemistry
  • Butyrates / pharmacology*
  • Caproates / chemical synthesis
  • Caproates / chemistry
  • Caproates / pharmacology*
  • Crystallography, X-Ray
  • Dose-Response Relationship, Drug
  • Drug Discovery*
  • Humans
  • MAP Kinase Kinase Kinase 5 / antagonists & inhibitors*
  • MAP Kinase Kinase Kinase 5 / metabolism
  • Models, Molecular
  • Molecular Dynamics Simulation
  • Molecular Structure
  • Protein Kinase Inhibitors / chemical synthesis
  • Protein Kinase Inhibitors / chemistry*
  • Protein Kinase Inhibitors / pharmacology*
  • Structure-Activity Relationship
  • Thiazolidines / chemical synthesis
  • Thiazolidines / chemistry
  • Thiazolidines / pharmacology*

Substances

  • 4-(5-((5-(4-bromophenyl)-2-furyl)methylene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl)butanoic acid
  • 6-(5-((5-(4-bromophenyl)-2-furyl)methylene)-4-oxo-2-thioxo-1,3-thiazolidin-3-yl)hexanoic acid
  • Butyrates
  • Caproates
  • Protein Kinase Inhibitors
  • Thiazolidines
  • MAP Kinase Kinase Kinase 5
  • MAP3K5 protein, human