ahmedabudief

Dr. Ahmed Mohammed Abu-Dief Mohammed

Assistant Professor - Assistant professor of Inorganic and Physical Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

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Publications Which contain the keyword: 1


RAPID AND SIMPLE SPECTROPHOTOMETRIC METHOD  FOR THE DETERMINATION OF ANTIVIRAL  AND ANTI-PARKINSONISM DRUGS
A rapid and sensitive spectrophotometric method has been developed for the quantitative analysis of three antiviral, anti-parkinsonism drugs, namely amantadine (AMA), memantine (MET), and rimantadine (RIM). The method is based on the usage of 1,3-indandione (IDO) as a chromogenic reagent to form charge transfer complexes with the studied drugs and produce colored reaction products with an absorbance maximum at 522 ... Read more

Novel aryl carboximidamide and 3-aryl-1,2,4-oxadiazole analogues of naproxen as dual selective COX-2/15-LOX inhibitors: Design, synthesis and docking studies
A series of novel naproxen analogues containing 3-aryl-1,2,4-oxadiazoles moiety (4B-G) and their reaction intermediates aryl carboximidamides moiety (3B-G) was synthesized and evaluated _in vitro_ as dual COXs/15-LOX inhibitors. Compounds 3B-G exhibited superior inhibitory activity than celecoxib as COX-2 inhibitors. Compounds 3B-D and 3G were the most potent COX-2 inhibitors with IC50 range of 6.4 – 8.13 nM and higher selectivity ... Read more

Green synthesis of TiO2 nanoparticles as an efficient heterogeneous catalyst with high reusability for synthesis of 1,2-dihydroquinoline derivatives
Nano materials find wide applications due to their behavior at nano scale. TiO2 nanoparticles (TiO2 NPs) was synthesized using Neem leaf extract. This is simple, rapid, eco-friendly, cheaper and green tools for TiO2 NPs synthesis using agricultural waste at lower applied temperature. Characterization of the extracted TiO2 NPs was confirmed by XRD, SEM, EDAX, TEM, HR-TEM, SAED, and FT-IR, respectively. ... Read more

3.	Novel aryl carboximidamide and 3-aryl-1,2,4-oxadiazole analogues of naproxen as dual selective COX-2/15-LOX inhibitors: Design, synthesis and docking studies
A series of novel naproxen analogues containing 3-aryl-1,2,4-oxadiazoles moiety (4b-g) and their reaction intermediates aryl carboximidamides moiety (3b-g) was synthesized and evaluated in vitro as dual COXs/15-LOX inhibitors. Compounds 3b-g exhibited superior inhibitory activity than celecoxib as COX-2 inhibitors. Compounds 3b-d and 3g were the most potent COX-2 inhibitors with IC50 range of 6.4 – 8.13 nM and higher selectivity ... Read more

Optimization of the synthesis of het/aryl-amidoximes using an efficient green chemistry
This work focuses on optimizing an efficient green synthesis of arylamidoximes from appropriate nitrile and hydroxylamine hydrochloride in water and triethylamine (1.6 mol equivalent) as a base at room temperature for 6 h. This new green synthetic methodology is compared with previously known methods. The main advantages of this new process reported are good yield, easier work-up and short reaction ... Read more

2018-11-14 13:47:52 Keywords 1, 2, 4-Triazole,
Synthesis and Antibacterial Activity of Some New 4-anilino-5-phenyl-4H-1,2,4-triazole-3-thiol derivatives
4-Anilino-5-phenyl-4H-1,2,4-triazole-3-thiol (1) reacted with formaldehyde and different amines to give Mannich bases 2a–i. Treatment of compound 1 with formaldehyde afforded the corresponding 2-hydroxymethyl derivative 3, which upon its reaction with thionyl chloride yielded the corresponding chloromethyl derivative 4. Treatment of compound 4 with some thiols gave the corresponding sulfides 5a–f. The ring closure reaction of chloromethyl derivative 4 with hydrazine ... Read more

2018-10-30 09:30:23 Keywords 1, 4-Diazepines, Thieno(2, 3-b)thiophene, Cyclohexene Carboxylate,
1,4-Diazepines Bearing Thieno(2,3-b)thiophene and Cyclohexene Carboxylate Moieties"
1,4-Diazepines Bearing Thieno(2,3-b)thiophene and Cyclohexene Carboxylate Moieties" Read more

2018-10-30 09:31:59 Keywords Spiro 1, 3-Dithiin, 1, 3-Thiazine, Cyanoketene acetals, PTC conditions,
A Novel Synthesis of Spiro 1,3-Dithiin and 1,3-Thiazine Derivatives Via Cyanoketene acetals under PTC conditions.
A Novel Synthesis of Spiro 1,3-Dithiin and 1,3-Thiazine Derivatives Via Cyanoketene acetals under PTC conditions. Read more

2018-10-30 09:47:43 Keywords Substituted(1, 5)benzodiazepin, 1, 3-Oxazino, 1, 3-Oxazine, 1, 2, 4-Triazole,
A Novel Synthesis of Pyrano(2,3-c)-1,3-Oxazino(2,3-b)-1,2,4-Triazolo(3,4-b)- and 3-Substituted(1,5)benzodiazepin-2-one
A Novel Synthesis of Pyrano(2,3-c)-1,3-Oxazino(2,3-b)-1,2,4-Triazolo(3,4-b)- and 3-Substituted(1,5)benzodiazepin-2-one Read more

2018-10-30 09:47:43 Keywords Substituted(1, 5)benzodiazepin, 1, 3-Oxazino, 1, 3-Oxazine, 1, 2, 4-Triazole,
A Novel Synthesis of Pyrano(2,3-c)-1,3-Oxazino(2,3-b)-1,2,4-Triazolo(3,4-b)- and 3-Substituted(1,5)benzodiazepin-2-one
A Novel Synthesis of Pyrano(2,3-c)-1,3-Oxazino(2,3-b)-1,2,4-Triazolo(3,4-b)- and 3-Substituted(1,5)benzodiazepin-2-one Read more