Title:Water-Mediated Synthesis, Antibacterial and Antioxidant Evaluation of
New Fused Pyrimido-pyrimidine and Pyrimido-purines Derived From
Nucleobases
Volume: 11
Issue: 1
Author(s): Ichrak Bouguessa, Mohamed Aber, Nawal Khier, Mohamed Dehamchia*, Samir Bayou and Zine Régaïnia
Affiliation:
- Department of Biology, Laboratory of Biodiversity and Application of Biotechnology in Agriculture Domain (BABDA),
University of El Oued, El Oued, PO Box 789, 39000, Algeria
Keywords:
Pyrimidine, purines, dibenzalacetone, green chemistry, antibacterial activity, antioxidant activity.
Abstract:
Introduction: A simple and eco-friendly synthesis of novel substituted pyrimido[1,6-
a]pyrimidine, pyrimido[1,2-g]purine, and pyrimido[2,1-e]purine was accomplished by refluxing of nucleobases
(cytosine, adenine or guanine) and dibenzalacetone (DBA) in water using NaOH as a catalyst.
Methods: The molecular structures of the resulting products were characterized by infrared spectroscopy
(FT-IR), mass spectrometry, and proton (1H) and carbon (13C) nuclear magnetic resonance (NMR).
Results: The antibacterial activity of the newly fused heterocycles was assayed against the Gram-positive
bacterium Staphylococcus aureus (ATCC 6538) and Gram-negative Escherichia coli (ATCC 8737) using
gentamicin as a standard commercially available antibiotic.
Conclusion: In addition, the antioxidant capacity was screened using the 2,2-diphenyl-2-picrylhydrazyl
hydrate (DPPH•) and the 2,2-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS+•)
radicals scavenging assay.