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561.
O. Mansour B. Szymonski J. M. Morand M. Cussac F. Thomasson 《Journal of heterocyclic chemistry》2001,38(3):641-643
A series of 3‐carboxylic derivatives of disubstituted 1,5‐benzodiazepines (5–9) was synthesized by hetero‐cyclisation from 1,2‐diaminobenzene (1) with dibenzoylmethane (2) followed by bromination on position 3 and by introduction of the carboxylic group or introduction of the malonic moiety. Reduction of the hetero‐cycle gave the perhydro derivative diethyl (2,4‐diphenyl‐1,2,4,5‐tetrahydro‐3H‐1,5‐benzodiazepin‐3‐yl)malonate (9) . 相似文献
562.
Khaled Ahmed Mansour Sherifa Fahmy Moustafa Soad Mohamed Abdelkhalik 《Molecules (Basel, Switzerland)》2021,26(24)
In this paper, biological investigations and a high-resolution UPLC-PDA-ESI-qTOF-HRMS technique were employed for Brassica oleracea L. var. capitata f. rubra DC. (red cabbage) of the family Brassicaceae (Cruciferae), cultivated in Egypt, for the first time. The positive ionization mode is usually performed to identify anthocyanins. However, this technique cannot differentiate between anthocyanins and corresponding non-anthocyanin polyphenols. Thus, the negative ionization mode was also used, as it provided a series of characteristic ions for the MS analysis of anthocyanins. This helped in identifying five kaempferol derivatives for the first time in red cabbage, as well as nine—previously reported—anthocyanins. For the biological investigations, the acidified methanolic extract of fresh leaves and the methanolic extract of air-dried powdered leaves were examined for their antioxidant, antimicrobial, and anticancer activities. The freshly prepared phenolic extract was proven to be more biologically potent. Statistical significance was determined for its anticancer activity in comparison with standard doxorubicin. 相似文献
563.
In this paper, the fractional cumulative entropy is considered to get its further properties and also its developments to dynamic cases. The measure is used to characterize a family of symmetric distributions and also another location family of distributions. The links between the fractional cumulative entropy and the classical differential entropy and some reliability quantities are also unveiled. In addition, the connection the measure has with the standard deviation is also found. We provide some examples to establish the variability property of this measure. 相似文献
564.
Nemati Afsaneh Chaichi Mohammad Javad Lakouraj Moslem Mansour 《Journal of Analytical Chemistry》2022,77(6):717-726
Journal of Analytical Chemistry - In this research, chemiluminescence (CL) of several aldehydes (such as oxalaldehyde, N-isovaleryl-3-amino-propanal as the bioluminescent earthworm luciferin,... 相似文献
565.
Chamkha A. J. Rashad A. M. Armaghani T. Mansour M. A. 《Journal of Thermal Analysis and Calorimetry》2018,132(2):1291-1306
Journal of Thermal Analysis and Calorimetry - In this work, the influences of heat generation/absorption and nanofluid volume fraction on the entropy generation and MHD combined convection heat... 相似文献
566.
Amani Jaafar Adeline Fix-Tailler Najwa Mansour Magali Allain Wassim N. Shebaby Wissam H. Faour Sima Tokajian Abdelkrim El-Ghayoury Daoud Naoufal Jean-Philippe Bouchara Gérald Larcher Ghassan Ibrahim 《应用有机金属化学》2020,34(12):e5988
The reactions of Cu (II), Zn (II) and Cd (II) chloride or bromide with (E)-1-(3,4-dimethoxybenzylidene)-4-methylthiosemicarbazone (MTSVT) lead to the formation of new complexes. They were characterized by spectroscopic studies: IR, 1H and 13C NMR. The crystal structures of the compounds [MTSVT] ( L ), [ZnBr2(MTSVT)2] ( 2 ), [CdCl2(MTSVT)2] ( 3 ) and [CdBr2(MTSVT)2.H2O] ( 4 ) were determined by X-ray diffraction. For complexes 2 – 4 , the ion is coordinated through the sulfur atom. All compounds were tested for their antifungal activity against human pathogenic fungi Candida albicans and Aspergillus fumigatus, and for their antibacterial activity against Gram (+) Bacillus subtilis and Enterococcus faecalis as well as against Gram (−) bacteria such as Paracoccus yeei and Acinetobacter baumanii. The results indicated that the metal complexes exhibited a marked enhancement in antibacterial activity compared with the parent Schiff base. 相似文献
567.
Mansour S. Y. Sayed G.H. Al-Halim S. A. Marzouk M. I. Shaban S. S. 《Russian Journal of Organic Chemistry》2020,56(3):465-475
Russian Journal of Organic Chemistry - New diaryl-substituted pyridine, pyrimidine, pyrazole, and isoxazole derivatives bearing biphenyl-4-yl and 4-(dimethylamino)phenyl substituents have been... 相似文献
568.
569.
Donia Bensalah Aziza Mnasri A. Chakchouk-Mtibaa Lamjed Mansour L. Mellouli 《Green Chemistry Letters and Reviews》2020,13(2):155-163
ABSTRACT A three-component one-pot synthesis of new thiazolyl coumarin derivatives was carried out by condensing 3-acetyl-4-hydroxycoumarin, arylaldehydes, thiourea and ammonium acetate at reflux in DMC. The optimization details of the developed novel protocol are recorded. In addition, we have also synthesized these compounds via another second route in two steps. High atom-economy, excellent yields, simple procedure, and mild reaction conditions are the important features of this one-pot protocol. The chemical structures of the newly synthesized compounds were elucidated by using analytical (IR, 1H NMR, 13C NMR). Further, all the compounds were screened for their antioxidant activities. 相似文献
570.
Kamarehie Bahram Jafari Ali Zarei Ahmad Fakhri Yadolah Ghaderpoori Mansour Alinejad Azim 《Accreditation and quality assurance》2019,24(6):417-426
Accreditation and Quality Assurance - The main objective of the current research was to evaluate nitrate content in different brands of bottled drinking waters sold in Iranian markets using the... 相似文献