Design, synthesis, and biological evaluation of novel (1-thioxo-1,2,3,4-tetrahydro-β-carbolin-9-yl)acetic acids as selective inhibitors for AKR1B1

Bioorg Med Chem. 2012 Jan 1;20(1):356-67. doi: 10.1016/j.bmc.2011.10.073. Epub 2011 Nov 3.

Abstract

New substituted (1-thioxo-1,2,3,4-tetrahydro-β-carbolin-9-yl)acetic acids were designed as the inhibitor of AKR1B1 based upon the structure of rhetsinine, a minor alkaloidal component of Evodia rutaecarpa, and twenty derivatives were synthesized and evaluated. The most active compound of the series was (2-benzyl-6-methoxy-1-thioxo-1,2,3,4-tetrahydro-β-carbolin-9-yl)acetic acid (7m), which showed comparable inhibitory activity for AKR1B1 (IC(50)=0.15μM) with clinically used epalrestat (IC(50)=0.1μM). In the view of activity and selectivity, the most potent compound was (2-benzyl-6-carboxy-1-thioxo-1,2,3,4-tetrahydro-β-carbolin-9-yl)acetic acid (7t), which showed strong inhibitory effect (IC(50)=0.17μM) and very high selectivity for AKR1B1 against AKR1A1 (311:1) and AKR1B10 (253:1) compared with epalrestat.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetates / chemical synthesis
  • Acetates / chemistry*
  • Acetates / pharmacology*
  • Aldehyde Reductase / antagonists & inhibitors*
  • Aldehyde Reductase / metabolism
  • Aldo-Keto Reductases
  • Binding Sites
  • Carbolines / chemical synthesis*
  • Carbolines / chemistry
  • Carbolines / isolation & purification
  • Carbolines / pharmacology*
  • Computer Simulation
  • Drug Design*
  • Enzyme Activation / drug effects
  • Enzyme Inhibitors / chemical synthesis*
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / pharmacology*
  • Evodia / chemistry
  • Humans
  • Hydrogen Bonding
  • Kinetics
  • Protein Structure, Tertiary
  • Structure-Activity Relationship

Substances

  • (2-benzyl-6-carboxy-1-thioxo-1,2,3,4-tetrahydro-beta-carbolin-9-yl)acetic acid
  • Acetates
  • Carbolines
  • Enzyme Inhibitors
  • N2-(2-methylaminobenzoyl)tetrahydro-1H-pyrido(3,4-b)indol-1-one
  • AKR1B10 protein, human
  • Aldo-Keto Reductases
  • AKR1B1 protein, human
  • Aldehyde Reductase