Výsledky vyhledávání - "Mohamed Ahmed El-Nassag"

Synthesis, reactions, antioxidant and anticancer evaluation of some novel coumarin derivatives using ethyl 2-(2-oxo-4-phenyl-2H-chromen-7-yloxy) acetate as a starting material

Autor: Mohamed Ahmed El-Nassag, Ahmed Halawa, GehadAbd El-Raheem Abd El-Jaleel, Ahmed H. Bedair, Essam M. Eliwa, Mahmoud Mohamed Abd El-All, Ahmed Abd El-Hameed Hassan

Publikováno v: European Journal of Chemistry. 5:111-121

We report on the synthesis of new coumarin derivatives coupled with heterocyclic and bifunctionalized moieties at position 7. The proposed structures were confirmed by correct elemental analysis and spectral data (IR, MS, 1 H NMR and 13 C NMR). Some

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1387b2da2e927280deed16775ec0f7b
https://doi.org/10.5155/eurjchem.5.1.111-121.860

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Synthesis, reactions and biological evaluation of benzyltriazolophthalazine derivatives

Autor: Ahmed M. El-Agrody, Mohamed Ahmed El-Nassag, Ashraf H. F. Abd El-Wahab, Ahmed H. Bedair, Hany M. Mohamed

Publikováno v: European Journal of Chemistry. 4:10-19

A series of triazolophthalazine derivatives ( 4 - 22 ) were synthesized and characterized. The structures of the newly synthesized compounds were confirmed by spectral data. The newly synthesized compounds were also screened for their antimicrobial a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ac3fa8e7f563f4b6304ab33064ad7d3
https://doi.org/10.5155/eurjchem.4.1.10-19.707

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THE UTILITY OF BENZOYLCHROMENE AND 2-IMINOCHROMENE-3-CARBOXAMIDE DERIVATIVES FOR THE SYNTHESIS OF PYRANOCHROMENES, CHROMENOPYRANO(PYRIMIDINE)PYRIDINE, CHROMENO(PYRIDINES)QUINOLINE AND THEIR ANTIMICROBIAL EVALUATION

Autor: Hamdy Kh. Thabet, Ahmed A. Hassan, Ahmed Halawa, Mohamed Ahmed El-Nassag

Publikováno v: Al-Azhar Bulletin of Science. 23:113-131

Some new pyrano[3,4-c]chromene derivatives (4,5,9,13,14), bispyrano[3,4-c]chromene derivative (18) were synthesized via Michael addition of different active methylene compounds to benzoylchromenes 1a,b under different reaction conditions. Chromeno[4'

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6fa08dda75705276b60ee55614d936e
https://doi.org/10.21608/absb.2012.7206

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SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF SOME NEW COUMARIN, PYRIDINE, 1,2,3-TRIAZOLE, THIAZOLIDINONE, PYRAZOLOTRIAZINE, THIOPHENE AND THIAZOLE DERIVATIVES BEARING CARBONYLHYDRAZONOETHYLPHENYLTOSYLATE MOIETY

Autor: Shaban I. Mohamed, Ahmed Halawa, Mahmoud M. Abdelall, Mohamed Ahmed El-Nassag, Ahmed A. Hassan

Publikováno v: Al-Azhar Bulletin of Science. 22:165-180

A number of novel coumarin (4), pyridinone (5a,b), thiophenopyridinone (6), 1,2,3-triazole (7), pyrazolotriazine (10), thiazole (11,14a,b,15), thiophene (12), thiazolidinone (20,21,23) derivatives were synthesized via interaction of 4-(1-(2-(2-cyanoa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6fb854008fb401281c2af4bdfd38d663
https://doi.org/10.21608/absb.2011.7025

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