Palladium-Catalyzed Synthesis, Acetylcholinesterase Inhibition, and Neuroprotective Activities of N-Aryl Galantamine Analogues

J Nat Prod. 2023 Apr 28;86(4):939-946. doi: 10.1021/acs.jnatprod.2c01150. Epub 2023 Feb 21.

Abstract

A series of new N-aryl galantamine analogues (5a-5x) were designed and synthesized by modification of galantamine, using Pd-catalyzed Buchwald-Hartwig cross-coupling reaction in good to excellent yields. The cholinesterase inhibitory and neuroprotective activities of N-aryl derivatives of galantamine were evaluated. Among the synthesized compounds, the 4-methoxylpyridine-galantamine derivative (5q) (IC50 = 0.19 μM) exhibited excellent acetylcholinesterase inhibition activity, as well as significant neuroprotective effect against H2O2-induced injury in SH-SY5Y cells. Molecular docking, staining, and Western blotting analyses were performed to demonstrate the mechanism of action of 5q. Derivative 5q would be a promising multifunctional lead compound for the treatment of Alzheimer's disease.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetylcholinesterase / metabolism
  • Alzheimer Disease* / drug therapy
  • Catalysis
  • Cholinesterase Inhibitors / pharmacology
  • Cholinesterase Inhibitors / therapeutic use
  • Galantamine / pharmacology
  • Galantamine / therapeutic use
  • Humans
  • Hydrogen Peroxide
  • Molecular Docking Simulation
  • Molecular Structure
  • Neuroblastoma*
  • Neuroprotective Agents* / pharmacology
  • Neuroprotective Agents* / therapeutic use
  • Palladium
  • Structure-Activity Relationship

Substances

  • Galantamine
  • Acetylcholinesterase
  • Palladium
  • Cholinesterase Inhibitors
  • Hydrogen Peroxide
  • Neuroprotective Agents