- I received my BSc degree in 2006 in Special Chemistry with an excellent and honorable degree. I obtained my MSc and P... moreI received my BSc degree in 2006 in Special Chemistry with an excellent and honorable degree. I obtained my MSc and PhD degrees in Organic Chemistry from Al-Azhar University in 2014 and 2018, respectively. During my PhD, I stayed one year at OC III group (Prof. Dr. Norbert Sewald), Organic and Bioorganic Chemistry Department, Bielefeld University, Germany, to finish my PhD practical work under project entitled Novel Cytotoxic Drugs from Extremophilic Actinomycetes (ID57166072), financially supported by the German Academic Exchange Service (DAAD). I was employed as a lecturer of Organic Chemistry at the Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt in 18-04-2018. My current research focuses on developing new methodology in organic synthesis with the intention of applying the chemistry for the total synthesis of natural products with the design and synthesis of valuable bioactive molecules.edit
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Purpose This paper aims to focus on the synthesis of the macrocyclic complexes (Cu and Zn) and their applications as anticorrosive materials in epoxy paint formulation for surface coating application. Design/methodology/approach A... more
Purpose This paper aims to focus on the synthesis of the macrocyclic complexes (Cu and Zn) and their applications as anticorrosive materials in epoxy paint formulation for surface coating application. Design/methodology/approach A selected macrocyclic Cu(II) and Zn(II) complexes were prepared via template synthesis and characterized using Fourier transform infrared, thermal gravimetric analysis, scanning electron microscope, flexibility, hardness and adhesion of coating films prepared using epoxy paint. Findings The corrosion resistance of the epoxy-painted films was improved due to the incorporation of the Zn and Cu complexes into the formulation. Originality/value It was found that the metal complex-based formulation with Cu(II) and Zn(II) had outperformed the sample blank.
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Two new corrosion inhibitors were synthesized and applied to steel in 1.0 M HCl. The corrosion resistance was probed by electrochemical and theoretical methods. The study reveals significant intersections between electrochemical aspects... more
Two new corrosion inhibitors were synthesized and applied to steel in 1.0 M HCl. The corrosion resistance was probed by electrochemical and theoretical methods. The study reveals significant intersections between electrochemical aspects and theory.
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Three new series of bis-indole derivatives were synthesized based on p-phenylenediamine (2–4, 5 and 6) and 4,4′-ethylenedianiline moieties (7–9) using facile and efficient condensation of three positional isomeric indole-carboxaldehyde... more
Three new series of bis-indole derivatives were synthesized based on p-phenylenediamine (2–4, 5 and 6) and 4,4′-ethylenedianiline moieties (7–9) using facile and efficient condensation of three positional isomeric indole-carboxaldehyde derivatives (1a–c) with bifunctional amines upon microwave irradiation. The symmetric dimeric indole derivatives 2–4 as well as non-symmetric analogues 5 and 6 were obtained by in situ condensation of the respective positional 3-, 2- and 5-isomeric indole-carboxaldehydes with p-phenylenediamine, while compounds 7–9 resulted from respective condensation based on 4,4′-ethylenedianiline. Structures of the obtained compounds were deduced by advanced spectroscopic methods (1H NMR, 13C NMR and MS). In agar diffusion assay, derivative 6 showed moderate antibacterial activity against various Gram positive and negative bacteria, while derivative 7 displayed moderate activity against several Gram positive bacteria. However, in Resazurin assay employing the huma...
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ABSTRACT
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In the search for new bioactive compounds from extremophilic actinomycetes, a new marine actinomycete strain,
A new series of heterocyclic Schiff bases 2–9 containing indole moiety were synthesized by facile and efficient condensation of indole-3/2/5-carboxaldehyde (1a/1b/1c) with different aromatic and heterocyclic primary amines using... more
A new series of heterocyclic Schiff bases 2–9 containing indole moiety were synthesized by facile and efficient condensation of indole-3/2/5-carboxaldehyde (1a/1b/1c) with different aromatic and heterocyclic primary amines using conventional and/or microwave irradiation methods. The structures of the obtained compounds were assigned by sophisticated spectroscopic and spectrometric techniques (1D-NMR, 2D-NMR and MS). The synthesized compounds were screened for their cytotoxicity and antibacterial activities. In vitro cytotoxicity screening revealed that compound 5 exhibited moderate activity against KB-3-1 cell line (IC50=57.7 μM) while 5-indolylimino derivative 7 indicated close to the activity (IC50=19.6 μM) in comparison with the positive control (+)-Griseofulvin (IC50=19.2 μM), while the tested compounds 5, 6b, 7 and 9 revealed good or moderate antibacterial activity. In addition, molecular docking study of Schiff bases 2–9 was performed by Molecular Operating Environment (MOE 20...
Research Interests: Chemistry, Medicine, Humans, Escherichia coli, Pseudomonas, and 12 moreSchiff bases, Anti-Bacterial Agents, Epithelial cells, Bacillus subtilis, Microwaves, Staphylococcus, Microbial Sensitivity Tests, Cytotoxins, Micrococcus luteus, Minimum inhibitory concentration, Matrix Metalloproteinase, and Pharmacology and pharmaceutical sciences
Contamination of water with the copper(II) ions leads to serious diseases such as liver damage and cancer. This deadly effect prompted us to target the synthesis of a novel functionalized chitosan (Cs-BT) to be used as an adsorbent for... more
Contamination of water with the copper(II) ions leads to serious diseases such as liver damage and cancer. This deadly effect prompted us to target the synthesis of a novel functionalized chitosan (Cs-BT) to be used as an adsorbent for removing the copper(II) ions from the aqueous solution. The functionalization was done by introducing benzothiazole moiety into the chitosan (Cs) chain and confirmed by the full disappearance of the NH2 band in the FT-IR spectrum of the adsorbent. The TGA-DTG analysis revealed that the functionalization reduced the thermal stability of the adsorbent (Cs-BT) as compared with pure chitosan. The adsorption was evidenced by SEM and EDX analysis. The adsorption study demonstrated that the optimal adsorption conditions were 120 min contact time, pH = 6, and initial Cu(II) concentration 200 mg/L. At these conditions, the Cs-BT achieved a maximum copper adsorption capacity of 1439.7 mg/g. Consequently, Cs-BT could be a promising and efficient Cu adsorbent in ...