Novel sulfonamide-containing 2-indolinones that selectively inhibit tumor-associated alpha carbonic anhydrases

Bioorg Med Chem. 2017 Jul 15;25(14):3714-3718. doi: 10.1016/j.bmc.2017.05.029. Epub 2017 May 15.

Abstract

Human carbonic anhydrases IX and XII are upregulated in many tumors and form a novel target for new generation anticancer drugs. Here we report the synthesis of novel 2-indolinone derivatives with the sulfonamide group as a zinc binding moiety. Enzyme inhibition assays confirmed that the compounds showed selectivity against hCA IX and XII over the widely distributed off-targets hCA I and II. Molecular modelling studies were performed to suggest modes of binding for these compounds.

Keywords: 2-Indolinone; Carbonic anhydrase; Docking; Isatin.

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry*
  • Antineoplastic Agents / metabolism
  • Binding Sites
  • Carbonic Anhydrase I / antagonists & inhibitors
  • Carbonic Anhydrase I / metabolism
  • Carbonic Anhydrase II / antagonists & inhibitors
  • Carbonic Anhydrase II / metabolism
  • Carbonic Anhydrase IX / antagonists & inhibitors
  • Carbonic Anhydrase IX / metabolism
  • Carbonic Anhydrase Inhibitors / chemical synthesis
  • Carbonic Anhydrase Inhibitors / chemistry*
  • Carbonic Anhydrase Inhibitors / metabolism
  • Carbonic Anhydrases / chemistry*
  • Carbonic Anhydrases / metabolism
  • Catalytic Domain
  • Humans
  • Indoles / chemical synthesis
  • Indoles / chemistry*
  • Indoles / metabolism
  • Inhibitory Concentration 50
  • Molecular Docking Simulation
  • Oxindoles
  • Structure-Activity Relationship
  • Sulfonamides / chemistry*

Substances

  • Antineoplastic Agents
  • Carbonic Anhydrase Inhibitors
  • Indoles
  • Oxindoles
  • Sulfonamides
  • 2-oxindole
  • Carbonic Anhydrase I
  • Carbonic Anhydrase II
  • Carbonic Anhydrase IX
  • Carbonic Anhydrases
  • carbonic anhydrase XII