Publications by Oqba N Al-Shayea

Publications by authors named "Oqba N Al-Shayea"

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Synthesis, characterization and antimicrobial activity of Schiff bases from chitosan and salicylaldehyde/TiO nanocomposite membrane.

A S Montaser Ahmed R Wassel Oqba N Al-Shaye'a

Int J Biol Macromol

March 2019

Article Synopsis

Salicylaldehyde was effectively used as a crosslinker with chitosan to create hydrogel membranes incorporating titanium oxide nanoparticles (TiO NPs) using a casting technique.
Characterization techniques like FTIR, XRD, SEM-EDX, and TGA showed successful crosslinking, improved thermal stability, and enhanced mechanical properties of the membranes.
The membranes demonstrated significant antibacterial activity against S. aureus and P. aeruginosa, completely eradicating the bacteria tested.

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Synthesis and antimicrobial evaluation of some novel thiazole, pyridone, pyrazole, chromene, hydrazone derivatives bearing a biologically active sulfonamide moiety.

Elham S Darwish Azza M Abdel Fattah Fawzy A Attaby Oqba N Al-Shayea

Int J Mol Sci

January 2014

This study aimed for the synthesis of new heterocyclic compounds incorporating sulfamoyl moiety suitable for use as antimicrobial agents via a versatile, readily accessible N-[4-(aminosulfonyl)phenyl]-2-cyanoacetamide (3). The 2-pyridone derivatives were obtained via reaction of cyanoacetamide with acetylacetone or arylidenes malononitrile. Cycloaddition reaction of cyanoacetamide with salicyaldehyde furnished chromene derivatives.

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