Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Ezzat A. Hamed"'
Autor:
Najla A. Alshaye, Nuha Salamah Alharbi, Mohamed A. El-Atawy, Reham O. El-Zawawy, Ezzat A. Hamed, Mohammed Elhag, Hoda A. Ahmed, Alaa Z. Omar
Publikováno v:
Heliyon, Vol 10, Iss 14, Pp e34540- (2024)
Peptic ulcer disease (PUD), often caused by Helicobacter pylori infection, is a prevalent gastrointestinal condition characterized by the erosion of the gastric or duodenal mucosal lining. H. pylori adheres to gastric epithelial cells, secreting toxi
Externí odkaz:
https://doaj.org/article/acb2d76aca8946bdaafc2fff9a3cac5b
Autor:
Alaa Z. Omar, Asmaa M. Khamis, Ezzat A. Hamed, Samir K. El-Sadany, Elsayed M. Abdel Rehim, Mohamed E. Elba, Mohamed G. Mohamed, Mohamed A. El-Atawy
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023)
Abstract Azo dyes are widely used for dyeing polyester fabrics but require optimization of properties like color strength and fastness. Fourteen novel disperse azo dyes were synthesized from 2,3-naphthalenediol and aniline derivatives to examine thei
Externí odkaz:
https://doaj.org/article/64181f3ad69d444ab91aee0e50341e7b
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-14 (2023)
Abstract Benzidine was coupled with ethyl cyanoacetate, and malononitrile, to give azo-hydrazo products which in turn were cyclized by using hydrazine and phenyl hydrazine to give 4,4'-([1,1'-biphenyl]-4,4'-diylbis(hydrazin-2-yl-1-ylidene))bis pyrazo
Externí odkaz:
https://doaj.org/article/c9c3b3670405441d89f17082c5f11e91
Autor:
Mohamed A. El-Atawy, Demiana H. Hanna, Ali H. Bashal, Hoda A. Ahmed, Eida M. Alshammari, Ezzat A. Hamed, Abdullah R. Aljohani, Alaa Z. Omar
Publikováno v:
Biomolecules, Vol 14, Iss 2, p 216 (2024)
The purpose of the current investigation was to produce cinammaldehyde-based chalcone derivatives (3a–k) to evaluate their potential effectiveness as antioxidant and inhibitory agents versus human Caco-2 cancer cells. The findings obtained using th
Externí odkaz:
https://doaj.org/article/712ba1fc5e604025912df2588ae4aff5
Autor:
Mohamed A. El-Atawy, Alaa Z. Omar, Mohammed L. Alazmi, Mai S. Alsubaie, Ezzat A. Hamed, Hoda A. Ahmed
Publikováno v:
Heliyon, Vol 9, Iss 4, Pp e14871- (2023)
New organic derivatives named, (E)-3(or4) -(alkyloxy)-N-{(trifluoromethyl)benzylidene}aniline, 1a-f, were synthesized and examined their liquid crystalline behaviors. FT-IR, 1H NMR, 13C NMR, 19F NMR, elemental analyses and GCMS were used to validate
Externí odkaz:
https://doaj.org/article/1b70e73cf43c40cab6409a9bc8078eea
Autor:
Mohamed A. El-Atawy, Mai S. Alsubaie, Mohammed L. Alazmi, Ezzat A. Hamed, Demiana H. Hanna, Hoda A. Ahmed, Alaa Z. Omar
Publikováno v:
Molecules, Vol 28, Iss 17, p 6420 (2023)
The goal of the current study was to prepare two new homologous series of N,N′-diarylurea and N,N′-diarylthiourea derivatives to investigate the therapeutic effects of these derivatives on the methodologies of inhibition directed on human MCF-7 c
Externí odkaz:
https://doaj.org/article/f64a0c6ef3e041fd9d5ce5a62b0b4f96
Publikováno v:
Journal of Saudi Chemical Society, Vol 27, Iss 1, Pp 101594- (2023)
A number of azo pyrazole derivatives and novel Schiff bases derived from azo diamino pyrazole were synthesized. These included 4-(2-arylhydrazono)-4H-pyrazole-3,5-diamines and N3,N5-dibenzylidene-4-(2-arylhydrazono)-4H-pyrazole-3,5-diamines. The chem
Externí odkaz:
https://doaj.org/article/b78ef620cc0d4a90a93b1eac90febc1c
Publikováno v:
Journal of Saudi Chemical Society, Vol 26, Iss 4, Pp 101504- (2022)
A series of novel pyrimidine-based derivative compounds were synthesized and evaluated for antiviral activity against Tobacco mosaic virus (TMV). All chemical structures of the prepared compounds were identified and characterized by IR, NMR, and elem
Externí odkaz:
https://doaj.org/article/bdb2871f648240d58379258ede75d6be
Autor:
Alaa Z. Omar, Mohammed L. Alazmi, Mai S. Alsubaie, Ezzat A. Hamed, Hoda A. Ahmed, Mohamed A. El-Atawy
Publikováno v:
Molecules, Vol 28, Iss 9, p 3804 (2023)
The effect of the terminal benzyloxy group on the mesomorphic properties of liquid crystalline materials developed from rod-like Schiff base has been described. For this objective, a novel Schiff base liquid crystal family, specifically new series of
Externí odkaz:
https://doaj.org/article/6315d148a59e410da5a3b1b106c9a2bc
Autor:
Alaa Z. Omar, Mohamed A. El-Atawy, Mai S. Alsubaie, Mohammed L. Alazmi, Hoda A. Ahmed, Ezzat A. Hamed
Publikováno v:
Crystals, Vol 13, Iss 3, p 378 (2023)
Methylthio moiety was observed to alter the mesomorphic features of rod-like Schiff-base-derived liquid crystalline materials. For this purpose, a new series of (E)-4-(alkoxy)-N-(4-(methylthio)benzylidene)aniline (In) liquid crystals were synthesized
Externí odkaz:
https://doaj.org/article/89a61f9a3b5546b2ad652253ebb4722f