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Papers by Youssef EL RHAYAM

Research paper thumbnail of 2D-QSAR study and design of novel pyrazole derivatives as an anticancer lead compound against A-549, MCF-7, HeLa, HepG-2, PaCa-2, DLD-1

Computational Toxicology, May 1, 2023

Research paper thumbnail of Identification of the new progress on Pyrazole Derivatives Molecules as Antimicrobial and Antifungal Agents

PubMed, Nov 30, 2022

Microbial infections remain a worldwide leading cause of death, despite the evolution of a large ... more Microbial infections remain a worldwide leading cause of death, despite the evolution of a large number of new antibiotics every year. Currently, several bacteria have developed resistance against antibiotics drugs which remain a major issue in antibiotics drug discovery. This review provides detailed information about antimicrobial and antifungal agent synthesis belonging to the pyrazoles scaffold. We reassemble the results obtained from several studies to characterize the importance of heteroatom nuclei in many synthetic products. Additionally, several compounds based on pyrazole derivatives such as benzimidazole, benzothiazole, indole, acridine, oxadiazole, imidazole, isoxazole, pyrazole, triazole, quinoline and quinazoline including other pyrazole containing drugs such as pyridazine, pyridine and pyrimidine are highlighted. Furthermore, you will find in this review 134 best promise structures collected from recent studies, relating the pyrazoles structures to the relevant biological activities, in particular, antimicrobial and antifungal one.

Research paper thumbnail of Aerated lagoon/adsorption combination method for the treatment of olive mill wastewater: optimizing parameters using study design

Environmental Monitoring and Assessment

Research paper thumbnail of 2D-QSAR study and design of novel pyrazole derivatives as an anticancer lead compound against A-549, MCF-7, HeLa, HepG-2, PaCa-2, DLD-1

Research paper thumbnail of Experimental study and theoretical modeling of the impact of inhibition of organic phosphorus compounds and macromolecular models

International Journal of Innovation and Applied Studies, 2014

this work, we studied two types of compounds used in the protection of iron surface. The first ty... more this work, we studied two types of compounds used in the protection of iron surface. The first type was performed on the organophosphate models, and the second based epoxy resins functional TGPO/HGAPPO. Thereafter we used the Quantitative Structure-Property Relationship Approach (QSPR) to connect The properties with descriptors to predict the polarization resistance to corrosion and inhibition of structures studied. To do this, we calculated the quantum chemical properties using the Gaussian 03 software hybrid B3LYP with 6-31 G (d) basis set with the aim of comparing the polarization resistance of two epoxy resins with those of phosphorus two organic phosphorus inhibitors. In addition, the electronic properties such as the highest occupied molecular orbital (HOMO), lowest unoccupied orbital (LUMO) energy and the molecular density were studied. We found as results of this study that the organophosphorus epoxy resin is very effective than the organic compounds studied.

Research paper thumbnail of Synthesis and characterization of a new epoxy resin homologous to DGEBA (diglycidyl 3-Aminopropyl Triethyl Silane): a study of thermal properties

International Journal of Innovation and Applied Studies, 2014

In this work we have synthesized a new bifunctional epoxy resin namely diglycidyl 3-aminopropyl t... more In this work we have synthesized a new bifunctional epoxy resin namely diglycidyl 3-aminopropyl triethylsilane (DGAPTES).This resin was synthesized in two steps: the first one is condensing the epichlorohydrin with 3-aminopropyl triethylsilane; the second is introducing the calcium carbonate as a base to form the oxirane cycle.The resin obtained was characterized by infrared Fourier transformation spectroscopy (FTIR), its chemical structure was also confirmed by the nuclear magnetic resonance of 1H and proton and carbon 13C (1H NMR and 13C NMR) on the one hand, and we have improved the thermal properties of the standard resin (DGEBA) by adding an amount of (DGAPTES) as an organic load in the standard matrix, on the other hand. This formulation has been studied by thermogravimetry as a macroscopic approach. The uptake of humidity of the standard DGAPTES and the crosslinked DGEBA/DGAPTES/MDA according to 80%/20%/traces was studied in order to improve the Fickien behavior.

Research paper thumbnail of Design and prediction of novel pyrazole derivatives as potential anti-cancer compounds based on 2D-QSAR study against PC-3, B16F10, K562, MDA-MB-231, A2780, ACHN and NUGC cancer cell lines

Research paper thumbnail of Modeling of thermal stability of a material to the conventional resin DGEBA by its wording with an epoxy resin sulfonated and Al2o3 and Zn mineral fillers

In order to model the thermal stability of the epoxy-based matrix of the conventional DGEBA resin... more In order to model the thermal stability of the epoxy-based matrix of the conventional DGEBA resin, following many formulations. The first series of formulations is based on the mixture of the Diglycidyl ether of bisphenol A (DGEBA) and the Diglycidylether of 4,4 - dihydroxydiphenyl sulfone (DGEDDS) cross-linked by dianiline methylene (MDA) as the curing agent. In the second series of formulations, we used two different percentages charges, mineral Al2O3 and Zn and their mixture in the system DGEBA/MDA. We used the model QSPR to connect properties with descriptions and to evaluate the different thermal degradation of the conventional matrix DGEBA characteristically formulated by the macromolecular, inorganic and metal matrix respectively DGEDDS, Al2O3 and Zn, calculated using quantum chemistry presented by Gaussian 03 tools. These energy parameters that are calculated by MM2.

Research paper thumbnail of Modeling and Optimization by the Experimental Design of the Synthesis: Terpene Phenol Resin Characterization and Thermogravimetric Study

The objective of this study is to determine the optimal conditions of the resin synthesis of stoi... more The objective of this study is to determine the optimal conditions of the resin synthesis of stoichiometric terpene phenol by pure development of a methodological strategy using the experimental design technique. Thus a mathematical model can be established to represent the best synthesis of "descriptive model" to explain "explanatory model" and predict the response at a point where no experience has been made in "provisional model". By following the theoretical results obtained through modeling, we synthesized a new terpene phenolic resin, prepared by oligomerization of terpene and phenol. The resin synthesis was characterized by Fourier transform (FTIR), 1 H, 13 C analyzes. The behavior and thermal stability of hardening was followed by the thermogravimetric analysis (TGA).

Research paper thumbnail of 2D-QSAR study and design of novel pyrazole derivatives as an anticancer lead compound against A-549, MCF-7, HeLa, HepG-2, PaCa-2, DLD-1

Computational Toxicology, May 1, 2023

Research paper thumbnail of Identification of the new progress on Pyrazole Derivatives Molecules as Antimicrobial and Antifungal Agents

PubMed, Nov 30, 2022

Microbial infections remain a worldwide leading cause of death, despite the evolution of a large ... more Microbial infections remain a worldwide leading cause of death, despite the evolution of a large number of new antibiotics every year. Currently, several bacteria have developed resistance against antibiotics drugs which remain a major issue in antibiotics drug discovery. This review provides detailed information about antimicrobial and antifungal agent synthesis belonging to the pyrazoles scaffold. We reassemble the results obtained from several studies to characterize the importance of heteroatom nuclei in many synthetic products. Additionally, several compounds based on pyrazole derivatives such as benzimidazole, benzothiazole, indole, acridine, oxadiazole, imidazole, isoxazole, pyrazole, triazole, quinoline and quinazoline including other pyrazole containing drugs such as pyridazine, pyridine and pyrimidine are highlighted. Furthermore, you will find in this review 134 best promise structures collected from recent studies, relating the pyrazoles structures to the relevant biological activities, in particular, antimicrobial and antifungal one.

Research paper thumbnail of Aerated lagoon/adsorption combination method for the treatment of olive mill wastewater: optimizing parameters using study design

Environmental Monitoring and Assessment

Research paper thumbnail of 2D-QSAR study and design of novel pyrazole derivatives as an anticancer lead compound against A-549, MCF-7, HeLa, HepG-2, PaCa-2, DLD-1

Research paper thumbnail of Experimental study and theoretical modeling of the impact of inhibition of organic phosphorus compounds and macromolecular models

International Journal of Innovation and Applied Studies, 2014

this work, we studied two types of compounds used in the protection of iron surface. The first ty... more this work, we studied two types of compounds used in the protection of iron surface. The first type was performed on the organophosphate models, and the second based epoxy resins functional TGPO/HGAPPO. Thereafter we used the Quantitative Structure-Property Relationship Approach (QSPR) to connect The properties with descriptors to predict the polarization resistance to corrosion and inhibition of structures studied. To do this, we calculated the quantum chemical properties using the Gaussian 03 software hybrid B3LYP with 6-31 G (d) basis set with the aim of comparing the polarization resistance of two epoxy resins with those of phosphorus two organic phosphorus inhibitors. In addition, the electronic properties such as the highest occupied molecular orbital (HOMO), lowest unoccupied orbital (LUMO) energy and the molecular density were studied. We found as results of this study that the organophosphorus epoxy resin is very effective than the organic compounds studied.

Research paper thumbnail of Synthesis and characterization of a new epoxy resin homologous to DGEBA (diglycidyl 3-Aminopropyl Triethyl Silane): a study of thermal properties

International Journal of Innovation and Applied Studies, 2014

In this work we have synthesized a new bifunctional epoxy resin namely diglycidyl 3-aminopropyl t... more In this work we have synthesized a new bifunctional epoxy resin namely diglycidyl 3-aminopropyl triethylsilane (DGAPTES).This resin was synthesized in two steps: the first one is condensing the epichlorohydrin with 3-aminopropyl triethylsilane; the second is introducing the calcium carbonate as a base to form the oxirane cycle.The resin obtained was characterized by infrared Fourier transformation spectroscopy (FTIR), its chemical structure was also confirmed by the nuclear magnetic resonance of 1H and proton and carbon 13C (1H NMR and 13C NMR) on the one hand, and we have improved the thermal properties of the standard resin (DGEBA) by adding an amount of (DGAPTES) as an organic load in the standard matrix, on the other hand. This formulation has been studied by thermogravimetry as a macroscopic approach. The uptake of humidity of the standard DGAPTES and the crosslinked DGEBA/DGAPTES/MDA according to 80%/20%/traces was studied in order to improve the Fickien behavior.

Research paper thumbnail of Design and prediction of novel pyrazole derivatives as potential anti-cancer compounds based on 2D-QSAR study against PC-3, B16F10, K562, MDA-MB-231, A2780, ACHN and NUGC cancer cell lines

Research paper thumbnail of Modeling of thermal stability of a material to the conventional resin DGEBA by its wording with an epoxy resin sulfonated and Al2o3 and Zn mineral fillers

In order to model the thermal stability of the epoxy-based matrix of the conventional DGEBA resin... more In order to model the thermal stability of the epoxy-based matrix of the conventional DGEBA resin, following many formulations. The first series of formulations is based on the mixture of the Diglycidyl ether of bisphenol A (DGEBA) and the Diglycidylether of 4,4 - dihydroxydiphenyl sulfone (DGEDDS) cross-linked by dianiline methylene (MDA) as the curing agent. In the second series of formulations, we used two different percentages charges, mineral Al2O3 and Zn and their mixture in the system DGEBA/MDA. We used the model QSPR to connect properties with descriptions and to evaluate the different thermal degradation of the conventional matrix DGEBA characteristically formulated by the macromolecular, inorganic and metal matrix respectively DGEDDS, Al2O3 and Zn, calculated using quantum chemistry presented by Gaussian 03 tools. These energy parameters that are calculated by MM2.

Research paper thumbnail of Modeling and Optimization by the Experimental Design of the Synthesis: Terpene Phenol Resin Characterization and Thermogravimetric Study

The objective of this study is to determine the optimal conditions of the resin synthesis of stoi... more The objective of this study is to determine the optimal conditions of the resin synthesis of stoichiometric terpene phenol by pure development of a methodological strategy using the experimental design technique. Thus a mathematical model can be established to represent the best synthesis of "descriptive model" to explain "explanatory model" and predict the response at a point where no experience has been made in "provisional model". By following the theoretical results obtained through modeling, we synthesized a new terpene phenolic resin, prepared by oligomerization of terpene and phenol. The resin synthesis was characterized by Fourier transform (FTIR), 1 H, 13 C analyzes. The behavior and thermal stability of hardening was followed by the thermogravimetric analysis (TGA).