Design, synthesis, and biological evaluation of 4-((6,7-dimethoxyquinoline-4-yl)oxy)aniline derivatives as FLT3 inhibitors for the treatment of acute myeloid leukemia

Bioorg Med Chem Lett. 2019 Oct 1;29(19):126630. doi: 10.1016/j.bmcl.2019.126630. Epub 2019 Aug 20.

Abstract

FMS-like tyrosine kinase 3 (FLT3) was an important therapeutic target in acute myeloid leukemia (AML). We synthesized two series of 4-((6,7-dimethoxyquinoline-4-yl)oxy)aniline derivatives possessing the semicarbazide moiety and 2,2,2-trifluoro-N,N'-dimethylacetamide moiety as the linker. The cell proliferation assay in vitro against HL-60 and MV4-11 cell lines demonstrated that most series I compounds containing semicarbazide moiety had more potent than Cabozantinib. Furthermore, the enzyme assay showed that compound 12c and 12g were potent FLT3 inhibitors with IC50 values of 312 nM and 384 nM, respectively. Following that, molecular docking analysis was also performed to determine possible binding mode between FLT3 and the target compound.

Keywords: Acute myeloid leukemia; FLT3; Inhibitors; Structure-activity relationships.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aniline Compounds / chemistry*
  • Antineoplastic Agents / chemical synthesis*
  • Antineoplastic Agents / pharmacology*
  • Apoptosis
  • Cell Proliferation
  • Drug Design*
  • Humans
  • Leukemia, Myeloid, Acute / drug therapy*
  • Leukemia, Myeloid, Acute / enzymology
  • Leukemia, Myeloid, Acute / pathology
  • Protein Kinase Inhibitors / chemical synthesis*
  • Protein Kinase Inhibitors / pharmacology*
  • Semicarbazides / chemistry
  • Structure-Activity Relationship
  • Tumor Cells, Cultured
  • fms-Like Tyrosine Kinase 3 / antagonists & inhibitors*

Substances

  • Aniline Compounds
  • Antineoplastic Agents
  • Protein Kinase Inhibitors
  • Semicarbazides
  • carbamylhydrazine
  • FLT3 protein, human
  • fms-Like Tyrosine Kinase 3