Synthesis, inhibitory activity and molecular docking studies of two Cu(II) complexes against Helicobacter pylori urease

Abstract

Two mononuclear copper(II) complexes, [Cu(C₁₅H₁₆NO₂)₂] (1) and [Cu(C₆H₉N₂O₄)₂·3H₂O] (2·3H₂O), were synthesised and structurally characterised by single-crystal X-ray analysis. The copper(II) atom adopts a square-planar environment in complex 1, while the geometry in 2·3H₂O could be described as the distorted square pyramidal. Complexes 1 and 2·3H₂O were evaluated for their inhibitory activities against Helicobacter pylori (H. pylori) urease in vitro. They both were found to have strong inhibitory activities against H. pylori urease comparable to that of acetohydroxamic acid (AHA). A docking simulation was performed to position 2 into the H. pylori urease active site to determine the probable binding conformation.

Keywords::

• Complexes
• molecular docking
• urease
• inhibitor