Design and synthesis of novel 5,6-disubstituted pyridine-2,3-dione-3-thiosemicarbazone derivatives as potential anticancer agents

Eur J Med Chem. 2014 Jun 23:81:22-7. doi: 10.1016/j.ejmech.2014.05.001. Epub 2014 May 4.

Abstract

A series of 5,6-disubstituted pyridine-2,3-dione-3-thiosemicarbazone derivatives(2a-2n) and 5,6-disubstituted pyridine-2,3-dione S-benzyl-3-thiosemicarbazones(3a-3g) were synthesized starting from 2,3-dihydroxypyridine via oxidation-Michael additions, condensations and nucleophilic substitutions. The structures of the compounds were established by IR, (1)H NMR, (13)C NMR, and HRMS. All newly synthesized compounds were screened for their anticancer activity against Breast cancer (MCF-7), Colon cancer (HCT-116) and hepatocellular cancer (BEL7402) cell lines. Bioassay results indicated that most of the prepared compounds exhibited cytotoxicity against various cancer cells in vitro. Some of the compounds exhibited promising antiproliferative activity, which were comparable to the positive control (5-fluorouracil). The structure-activity relationship was discussed.

Keywords: 2,3-Dihydroxypyridine; Anticancer activity; Pyridine-2,3-diones; Thiosemicarbazone.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / pharmacology*
  • Cell Line, Tumor
  • Cell Proliferation / drug effects
  • Dose-Response Relationship, Drug
  • Drug Design*
  • Drug Screening Assays, Antitumor
  • HCT116 Cells
  • Humans
  • MCF-7 Cells
  • Molecular Structure
  • Structure-Activity Relationship
  • Thiosemicarbazones / chemical synthesis
  • Thiosemicarbazones / chemistry
  • Thiosemicarbazones / pharmacology*

Substances

  • 5,6-di(o-methylanilino)pyridine-2,3-dione-3-thiosemicarbazone
  • Antineoplastic Agents
  • Thiosemicarbazones