Zobrazeno 1 - 10
of 45
pro vyhledávání: '"El-Sayed, H."'
Autor:
Matti Haukka, Saied M. Soliman, Abdullah Mohammed Al-Majid, El Sayed H. El Tamany, Assem Barakat, Ahmed T. A. Boraei
Publikováno v:
Crystals; Volume 11; Issue 9; Pages: 1041
Crystals, Vol 11, Iss 1041, p 1041 (2021)
Crystals, Vol 11, Iss 1041, p 1041 (2021)
Four different new Schiff basses tethered indolyl-triazole-3-thione hybrid were designed and synthesized. X-ray single crystal structure, tautomerism, DFT, NBO and Hirshfeld analysis were explored. X-ray crystallographic investigations with the aid o
Autor:
Maged A. El Sawy, Maram M. Elshatanofy, Yeldez El Kilany, Kamal Kandeel, Bassma H. Elwakil, Mohamed Hagar, Mohamed Reda Aouad, Fawzia Faleh Albelwi, Nadjet Rezki, Mariusz Jaremko, El Sayed H. El Ashry
Publikováno v:
International Journal of Molecular Sciences; Volume 23; Issue 9; Pages: 4706
Tuberculosis (TB) caused by Mycobacterium tuberculosis is still a serious public health concern around the world. More treatment strategies or more specific molecular targets have been sought by researchers. One of the most important targets is M. tu
Publikováno v:
Journal of Molecular Structure. 1168:106-114
Adsorption of three polymeric ionic liquids, Corrosion performance and hydrogen evolution rate of carbon steel was tested in 1 mol L−1 HCl. The prepared polymers were based on 2-acrylamido-2-methylpropane sulfonic acid (AMPS) through quaternization
Autor:
Mohamed Nabil Abd Al Moaty, Entsar I. Rabea, Laila F. Awad, El Sayed H. El Ashry, Nihal Ahmed Ibrahim, Mohamed E. I. Badawy
Publikováno v:
Journal of Molecular Structure. 1249:131551
A series of 6-methylpyrimidin-4(3H)-one and oxo-1,2,4-triazolo[4,3-a]pyrimidine derivatives (1-18) was designed to meet the urgent need for novel antibacterial and antioxidant agents. The in vitro antibacterial activity revealed that most of the comp
Autor:
Mohamed Zakaria, El Sayed H. El Ashry, Saied M. Soliman, Laila F. Awad, Ahmed A. Kassem, Mahmoud Nasr
Publikováno v:
Journal of Molecular Structure. 1245:131230
A novel series of thiosemicarbazone derivatives having 1,3-dioxoisoindole core were synthesized from the reaction of N-(1,3-dioxoisoindolin-2-yl)aminothiocarbohydrazide (3) with a variety of aldehydes and ketones. Their geometrical and conformational
Autor:
Assem Barakat, Mohamed Nabil Abd Al Moaty, Hazem A. Ghabbour, Laila F. Awad, El Sayed H. El Ashry
Publikováno v:
Journal of Molecular Structure. 1152:87-95
In this work, the synthesis of novel 1,2,4-triazole thioglycoside heterocycles 4, 5, and 8 were achieved by the reaction of 1,2,3,4,6-penta-O-acetyl-β- d -glucopyranose (2) and galactopyranose (3) with 4-((4-arylidene)amino)-5-methyl-1,2,4-triazole-
Autor:
Saied M. Soliman, Laila F. Awad, El Sayed H. El Ashry, Hazem A. Ghabbour, Mohamed Nabil Abd Al Moaty, Assem Barakat
Publikováno v:
Journal of Molecular Structure. 1146:432-440
Reaction of 4-amino-3-methyl-1,2,4-triazole-5-thione with some substituted benzaldehydes in presence of catalytic amount of hydrochloric acid afforded the respective Schiff's bases 3a-e. Computational studies using DFT incorporating the B3LYP/6-311G(
Autor:
Yeldez El Kilany, Mohamed Zakaria, Mohammed Alazmi, El Sayed H. El Ashry, Kanubhai D. Katariya, Mariusz Jaremko, Sayed Z. Mohammady, Mohamed Hagar
Publikováno v:
Crystals
Volume 11
Issue 8
Crystals, Vol 11, Iss 978, p 978 (2021)
Volume 11
Issue 8
Crystals, Vol 11, Iss 978, p 978 (2021)
A new series of Schiff base liquid crystal have been prepared and studied. Schiff bases of p-alkyl aniline derivatives and 4-phenyl pyridine-4′-carbaldehyde were prepared. The terminal alkyl groups substituting aniline are of varied chain length, n
Autor:
Gehad Lotfy, Yasmine M. Abdel Aziz, Mohamed M. Said, Assem Barakat, Abdullah Mohammed Al-Majid, El Sayed H. El Ashry, El Sayed H. El Tamany, Saied M. Soliman, Hazem A. Ghabbour
Publikováno v:
Journal of Molecular Structure. 1198:126873
Four chalcone structures based on cyclohexanone cores were presented. The structures of bis-benzylidenecyclohexanone analogs 3a-d were elucidated using spectrophotometric and single-crystal X-ray techniques. Compounds 3a, 3b, and 3d crystalized in th
Publikováno v:
Journal of Molecular Structure. 1108:667-679
A new series of N- and S-alkylated products of 3-aryl-1H,3H-quinazolin-2,4-dione and 3-aryl-2-mercapto-3H-quinazolin-4-one, respectively, were prepared in good yields via efficient nucleophilic substitution reaction of the SH and NH substrates with m