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Rafik A, Jaddi A, Salah M, Komiha N, Carvajal M, Marakchi K. Insights into the mechanism, selectivity, and substituent effects in the Diels-Alder reaction of azatrienes with electron-rich dienophiles: An MEDT study. J Mol Graph Model 2024; 132:108819. [PMID: 39029284 DOI: 10.1016/j.jmgm.2024.108819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 07/04/2024] [Accepted: 07/08/2024] [Indexed: 07/21/2024]
Abstract
The reactivity and mechanistic intricacies of azatrienes in Diels-Alder reactions have been relatively unexplored despite their intriguing potential applications. In this study, we employ Molecular Electron Density Theory to theoretically investigate the hetero-Diels-Alder reaction involving azatrienes with ethyl vinyl ether and allenyl methyl ether. Analysis of Conceptual Density Functional Theory, energetic profiles, and the topological characteristics is conducted to elucidate the reactions. The revealed mechanism manifests as a polar one-step two-stages process under kinetic control. We establish a clear relationship of between the periselectivity, regioselectivity, and stereoselectivity on one hand and the characteristics of the reactions mechanism on the other hand. The influence of weak interactions on reaction activation barriers and bonding evolution are discussed in detail. We demonstrate that substituents enhancing the reverse electron density flux facilitate the feasibility of the reactions. The results lay ground for a meticulous control of the reaction of azatriene in similar synthetic scenarios.
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Affiliation(s)
- Amine Rafik
- Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, LS3MN2E/CERNE2D, Faculty of Sciences, Mohammed V University in Rabat, Morocco; Departamento de Ciencias Integradas, Centro de Estudios Avanzados en Física, Matemática y Computación, Unidad Asociada GIFMAN, CSIC-UHU, Universidad de Huelva, Huelva, 21071, Spain
| | - Abdeljabbar Jaddi
- Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, LS3MN2E/CERNE2D, Faculty of Sciences, Mohammed V University in Rabat, Morocco
| | - Mohammed Salah
- Molecular Modelling and Spectroscopy Research Team, Faculty of Science, Chouaïb Doukkali University, P.O. Box 20, 24000, El Jadida, Morocco
| | - Najia Komiha
- Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, LS3MN2E/CERNE2D, Faculty of Sciences, Mohammed V University in Rabat, Morocco
| | - Miguel Carvajal
- Departamento de Ciencias Integradas, Centro de Estudios Avanzados en Física, Matemática y Computación, Unidad Asociada GIFMAN, CSIC-UHU, Universidad de Huelva, Huelva, 21071, Spain
| | - Khadija Marakchi
- Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, LS3MN2E/CERNE2D, Faculty of Sciences, Mohammed V University in Rabat, Morocco.
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2
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Zaki K, Ouabane M, Guendouzi A, Sbai A, Sekkate C, Bouachrine M, Lakhlifi T. From farm to pharma: Investigation of the therapeutic potential of the dietary plants Apium graveolens L., Coriandrum sativum, and Mentha longifolia, as AhR modulators for Immunotherapy. Comput Biol Med 2024; 181:109051. [PMID: 39186905 DOI: 10.1016/j.compbiomed.2024.109051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 08/01/2024] [Accepted: 08/20/2024] [Indexed: 08/28/2024]
Abstract
Autoimmune diseases represent a complex array of conditions where the body's immune system mistakenly attacks its own tissues. These disorders, affecting millions worldwide, encompass a broad spectrum of conditions ranging from rheumatoid arthritis and multiple sclerosis to lupus and type 1 diabetes. The Aryl hydrocarbon receptor (AhR) translocator, expressed across immune and other cell types, plays crucial roles in immune disorders and inflammatory diseases. With a realm towards natural remedies in modern medicine for disease prevention, this study investigates the electronic properties and behaviors of bioactive compounds from dietary sources, including Apium graveolens L. (Celery), Coriandrum sativum seeds (Coriander), and Mentha longifolia, as AhR modulators. Through comprehensive analysis (HOMO-LUMO, ESP, LOL, and ELF), electron-rich and -poor regions, electron localization, and delocalization are identified, contrasting these compounds with the toxic AhR ligand, TCDD. Evaluation of Absorption, Distribution, Metabolism, Excretion, and Toxicity (ADMET) properties reveals favorable pharmacokinetics without blood-brain barrier penetration, indicating drug-like characteristics. Molecular docking demonstrates stronger interactions of dietary flavonoid ligands with AhR transcription compared to TCDD. Molecular dynamics simulations confirm the stability of complexes and the sustainability of interactions formed. This research underscores the potential of natural compounds as effective AhR modulators for therapeutic interventions in immune-related disorders.
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Affiliation(s)
- Khadija Zaki
- Molecular Chemistry and Natural Substances Laboratory, Moulay Ismail University, Faculty of Science, Meknes, Morocco
| | - Mohamed Ouabane
- Molecular Chemistry and Natural Substances Laboratory, Moulay Ismail University, Faculty of Science, Meknes, Morocco; Chemistry-Biology Applied to the Environment URL CNRT 13, Department of Chemistry, Faculty of Science, My Ismail University, Meknes, Morocco
| | - Abdelkrim Guendouzi
- Laboratory of Chemistry, Synthesis, Properties and Applications, Department of Chemistry, Faculty of Science, University of Saida, Algeria
| | - Abdelouahid Sbai
- Molecular Chemistry and Natural Substances Laboratory, Moulay Ismail University, Faculty of Science, Meknes, Morocco.
| | - Chakib Sekkate
- Chemistry-Biology Applied to the Environment URL CNRT 13, Department of Chemistry, Faculty of Science, My Ismail University, Meknes, Morocco
| | - Mohammed Bouachrine
- Molecular Chemistry and Natural Substances Laboratory, Moulay Ismail University, Faculty of Science, Meknes, Morocco
| | - Tahar Lakhlifi
- Molecular Chemistry and Natural Substances Laboratory, Moulay Ismail University, Faculty of Science, Meknes, Morocco
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3
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Eryilmaz S, Bagdatli E. Structural characterization and keto-enol tautomerization of 4-substituted pyrazolone derivatives with DFT approach. J Mol Graph Model 2024; 131:108814. [PMID: 38968767 DOI: 10.1016/j.jmgm.2024.108814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 04/19/2024] [Accepted: 06/17/2024] [Indexed: 07/07/2024]
Abstract
The synthesis of two pyrazolone derivative compounds, PYR-I(4-Acetyl-1-(4-chlorophenyl)-3-isopropyl-1H-pyrazol-5(4H)-one) and PYR-II1-(4-Chlorophenyl))-3-isopropyl-5-oxo-4,5-5-dihydro-1H-pyrazole-4-carbaldehyde, their characterization by FT-IR, NMR, UV-Vis and GC-MS techniques, and the evaluation of the keto-enol tautomerization process of the structures along with the DFT approach and spectral data were reported in this paper. Spectral findings indicated that PYR-I was stable at the keto state. The IR spectrum recorded in solid form showed that the PYR-II structure was stable in the enol state, while the NMR spectrum in the solution medium showed that it was stable in the keto state. DFT-based analyses were realized with the B3LYP hybrid functional and the 6-311++G(d,p) basis set. The modelled keto, transition and enol state molecular geometries of structures were optimized in the gas phase and different solvent media and the total energy and dipole moment values were investigated at the specified theoretical level. The possible keto-enol tautomerism mechanism of the structures was evaluated through some thermodynamic parameters such as the difference in free Gibbs energy (ΔG), enthalpy (ΔH), entropy (ΔS), and predictive tautomeric equilibrium constants (Keq), acidity constants (pKa) and percentages of tautomers at 298.15 K and 1 atm pressure. The results of these analyses based on the DFT approach indicated that the keto-enol tautomer equilibrium heavily favours the keto form for PYR-I and the enol form for PYR-II in all cases. Moreover, natural bond orbital (NBO) analysis was performed for the tautomers, and the chemical reactivity profiles of the most stable tautomers were examined with the values of frontier molecular orbital energy and some reactivity descriptors.
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Affiliation(s)
- Serpil Eryilmaz
- Department of Physics, Faculty of Arts and Sciences, Amasya University, 05100, Amasya, Turkey.
| | - Emine Bagdatli
- Department of Chemistry, Faculty of Arts and Sciences, Ordu University, 52200, Ordu, Turkey
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4
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Lima IT, Gomes RFC, Paura ENC, Provasi PF, Gester R, Rodrigues da Cunha A. Exploring the molecular solvatochromism, stability, reactivity, and non-linear optical response of resveratrol. J Mol Model 2024; 30:314. [PMID: 39167248 DOI: 10.1007/s00894-024-06108-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 08/08/2024] [Indexed: 08/23/2024]
Abstract
CONTEXT This work analyzes the isomerization effects and solvent contributions to the stability, electronic excitations, reactivity, and non-linear optical properties (NLO) of resveratrol molecules within the formalism of the Density Functional Theory. The findings suggest that resveratrol solvatochromism is significantly influenced by solvent polarization. The electronic and free energies (E and G) indicate that trans is the most stable conformer. The system is classified as a strong nucleophile. However, the analysis of the Fukui functions and the Mulliken charges indicate that cis-trans isomerization jointly affects the reactive indices of the carbon and hydrogen atoms. The results also suggest that solvent is relevant to solvatochromism and the NLO response. Both cis and trans conformers present strong π - π ∗ excitations that undergo a visible hypsochromic change when the polarity of the solvent increases. Once the absorption spectra are connected to the first hyperpolarization ( β ) by the Oudar and Chemla relation, the hypsochromism of resveratrol is the reason for the drop in the generation of the second harmonic when the ambient polarity decreases. The CAM-B3LYP DFT results suggest that resveratrol is interesting for NLO applications. Depending on the choice of solvent, values ∼ 50 times those observed for urea ( β = 0.34 × 10 - 34 esu), which is a standard NLO material. METHODS The optimized geometries of cis and trans isomers of resveratrol in vacuum were obtained using Density Functional Theory (DFT) with the hybrid exchange-correlation function (CAM-B3LYP) and Pople basis set functions, specifically 6-311++G(d,p). The solvent effect on the geometries of both isomers was included using the polarizable continuum model (PCM) with the same level of QM calculation. Vibrational analysis was conducted to confirm that all optimized geometries correspond to the minimum energy. Various electronic properties, including dipole moments, molecular orbitals, transition energy, dipole polarizabilities, and global reactivity parameters, were calculated using both continuum and discrete solvation models based on the sequential QM/MM methodology. All QM calculations were performed with the Gaussian 09 program and the MC simulations with the DICE program. All NLO analysis was carried out using the Multiwfn code.
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Affiliation(s)
- Igo T Lima
- Coordenação do Bacharelado Interdisciplinar em Ciência e Tecnologia, Campus Dom Delgado, Universidade Federal do Maranhão, UFMA, São Luís, MA, Brazil
| | - Ramon F C Gomes
- Coordenação do Bacharelado Interdisciplinar em Ciência e Tecnologia, Campus Dom Delgado, Universidade Federal do Maranhão, UFMA, São Luís, MA, Brazil
| | - Edson N C Paura
- Universidade Federal do Maranhão, UFMA, Campus Balsas, Balsas, MA, Brazil
| | - Patricio F Provasi
- Department of Physics, IMIT, Northeastern University, CONICET, AV. Libertad 5500, W 3404 AAS, Corrientes, Argentina
| | - Rodrigo Gester
- Faculdade de Física, Universidade Federal do Sul e Sudeste do Pará, UNIFESSPA, Marabá, PA, Brazil
- Instituto de Física, Universidade de São Paulo, USP, Rua do Matão 1371, São Paulo, SP, Brazil
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Kanzouai Y, Laghmari M, Yamari I, Bouzammit R, Bahsis L, Benali T, Chtita S, Bakhouch M, Akhazzane M, El Kouali M, Hammani K, Al Houari G. Chromone-isoxazole hybrids molecules: synthesis, spectroscopic, MEDT, ELF, antibacterial, ADME-Tox, molecular docking and MD simulation investigations. J Biomol Struct Dyn 2024; 42:6410-6424. [PMID: 37817499 DOI: 10.1080/07391102.2023.2266022] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/01/2023] [Indexed: 10/12/2023]
Abstract
A mechanistic study was performed within the molecular electron density theory at the B3LYP/6-311G (d,p) computational level to explain the regioselectivity observed. An electron localization function analysis was also performed, and the results confirm the zwitterionic-type (zw-type) mechanism of the cycloaddition reactions between nitrile oxide and alkylated 4H-chromene-2-carboxylate derivatives and shed more light on the obtained regioselectivity experimentally. In silico studies on the pharmacokinetics, ADME and toxicity tests of the compounds were also performed, and it was projected that compounds 5a, 5b, 5c and 5d are pharmacokinetic and have favorable ADME profiles. Moreover, docking and molecular dynamics investigations were conducted to evaluate the interactions, orientation and conformation of the target compounds on the active sites of four distinct enzymes. The results of this investigation showed that two compounds, 5a and 5c, interacted effectively with the S. aureus active site while maintaining acceptable binding energy.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Youssra Kanzouai
- Engineering Laboratory of Organometallic and Molecular Materials and Environment, Department of Chemistry, Faculty of Sciences Dhar El Mahraz, University of Sidi Mohamed Ben Abdellah, Fez, Morocco
| | - Mustapha Laghmari
- Laboratory of Natural Resources and Environment, Department of Biology Polydisciplinary Faculty of Taza, Sidi Mohamed Ben Abdellah University, Taza, Morocco
| | - Imane Yamari
- Laboratory of Analytical and Molecular Chemistry, Department of Chemistry, Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca, Casablanca, Morocco
| | - Rachid Bouzammit
- Engineering Laboratory of Organometallic and Molecular Materials and Environment, Department of Chemistry, Faculty of Sciences Dhar El Mahraz, University of Sidi Mohamed Ben Abdellah, Fez, Morocco
| | - Lahoucine Bahsis
- Laboratoire de Chimie Analytique et Moléculaire, LCAM, Département de Chimie, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Safi, Morocco
| | - Taoufiq Benali
- Laboratory of Natural Resources and Environment, Department of Biology Polydisciplinary Faculty of Taza, Sidi Mohamed Ben Abdellah University, Taza, Morocco
- Environment and Health Team, Polydisciplinary Faculty of Safi, Department of Biology, Cadi Ayyad University, Safi, Morocco
| | - Samir Chtita
- Laboratory of Analytical and Molecular Chemistry, Department of Chemistry, Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca, Casablanca, Morocco
| | - Mohamed Bakhouch
- Bioorganic Chemistry Team, Department of Chemistry, Faculty of Sciences, University Chouaïb Doukkali, El Jadida, Morocco
| | - Mohamed Akhazzane
- Cité de l'innovation, Université Sidi Mohamed Ben Abdellah, Fez, Morocco
| | - M'hammed El Kouali
- Laboratory of Analytical and Molecular Chemistry, Department of Chemistry, Faculty of Sciences Ben M'Sik, Hassan II University of Casablanca, Casablanca, Morocco
| | - Khalil Hammani
- Laboratory of Natural Resources and Environment, Department of Biology Polydisciplinary Faculty of Taza, Sidi Mohamed Ben Abdellah University, Taza, Morocco
| | - Ghali Al Houari
- Engineering Laboratory of Organometallic and Molecular Materials and Environment, Department of Chemistry, Faculty of Sciences Dhar El Mahraz, University of Sidi Mohamed Ben Abdellah, Fez, Morocco
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Rasool S, Rasool T, Gani KM. Understanding the carbendazim adsorption from water using biochar derived from apple pomace and industrial wastewater sludge: experimental and DFT approaches. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:47818-47835. [PMID: 39007980 DOI: 10.1007/s11356-024-34305-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 07/03/2024] [Indexed: 07/16/2024]
Abstract
Biochars derived from apple pomace (AP-BC) and industrial wastewater sludge (IS-BC) were used to investigate adsorption performance and mechanism for removing carbendazim from water and compare its performance with commercial biochar (commercial BC). The results showed that the adsorption capacity of AP-BC and IS-BC were 76 mg g-1 and 82 mg g-1 respectively that was comparable with the commercial BC (80 mg g-1). The adsorption kinetics and isotherms were best described by the Pseudo-second-order and Langmuir models. Thermodynamic analysis suggested that higher temperatures can enhance the mobility of molecules, increased mobility facilitates more frequent and stronger interactions between the adsorbate molecules and the surface of the adsorbent material, leading to greater adsorption capacity. Density functional theory (DFT) calculations confirmed carbendazim's weak electrophilic nature, supporting the primary physisorption mechanism. Even after five cycles of recycling, both biochars maintained a consistent carbendazim removal efficiency of around 82%, highlighting their high reusability. In this study, the examination of waste-derived biochar's economic feasibility revealed that using biochars derived from waste biomass for large-scale wastewater treatment applications is an economically viable choice.
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Affiliation(s)
- Saheem Rasool
- Department of Chemical Engineering, National Institute of Technology, Srinagar, Jammu, and Kashmir, 190006, India
| | - Tanveer Rasool
- Department of Chemical Engineering, National Institute of Technology, Srinagar, Jammu, and Kashmir, 190006, India
| | - Khalid Muzamil Gani
- Department of Civil Engineering, National Institute of Technology, Srinagar, Jammu, and Kashmir, 190006, India.
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban, 4000, South Africa.
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7
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Moto JO, Adjieufack AI, Ndika Ngomb SC, D'ambassa GM, Djendo Mazia SL, Bikele DM. Deciphering the influence of Pd II and Pd IV oxidation states on non-standard chemical bonds within bis(jN-heterocyclic carbene) complexes: insights from DFT. RSC Adv 2024; 14:21075-21088. [PMID: 38962091 PMCID: PMC11221531 DOI: 10.1039/d4ra03893b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Accepted: 06/18/2024] [Indexed: 07/05/2024] Open
Abstract
Bis-N-heterocyclic carbene ligands (bis(NHC)) have introduced a new approach to designing homogeneous and heterogeneous catalysts, demonstrating the versatility of ligand concepts in catalysis. This study presents a computational analysis of palladium (+ii and +iv) complexes containing either a normally (bis(nNHC)) or an abnormally (bis(aNHC)) bound CH2-bridged bis-N-heterocyclic carbene ligand; in addition, ancillary ligands are permuted from chlorides (X = Cl) to bromides (X = Br). Density functional theory at the B3PW91/6-31G(d)/Lanl2DZ level in the gas phase was used to investigate the electronic structure and bonding properties of bis(NHC)PdIIX2 and bis(NHC)PdIVX4 for bis(NHC) palladium(ii) dihalide and palladium(iv) tetrachloride complexes, respectively. Results indicate that all of the palladium complex structures prefer a flexible boat-type conformation with an average C 2v symmetry, according to bond property (Ccarbene-Pd and Pd-Cl[Br]) analysis. The strength of these bonds depends on coordinating halide ions (Cl- and Br-), the type of ligand (bis(nNHC) and bis(aNHC)), and the palladium oxidation state (+ii and +iv). Analysis of thermodynamic parameters (ΔH 0, ΔG 0, and ΔE bind) shows an increase in values from an abnormal to normal chelating mode in tetrahalides, whereas the opposite is observed for dihalide complexes. The lower π-backbonding ability of the metal, which is influenced by the quantity and size of halide ions involved, could be one possible explanation for this deficiency.
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Affiliation(s)
- Jean Ongagna Moto
- Computational and Theoretical Chemistry Unit, Department of Chemistry, Faculty of Science, University of Douala P.O. Box 24157 Douala Cameroon
| | - Abel Idrice Adjieufack
- Physical and Theoretical Chemistry Laboratory, University of Yaoundé I P.O. Box 812 Yaoundé Cameroon
| | - Simon Claude Ndika Ngomb
- Computational and Theoretical Chemistry Unit, Department of Chemistry, Faculty of Science, University of Douala P.O. Box 24157 Douala Cameroon
| | - Gaël Mouzong D'ambassa
- Computational and Theoretical Chemistry Unit, Department of Chemistry, Faculty of Science, University of Douala P.O. Box 24157 Douala Cameroon
| | - Suzane Leonie Djendo Mazia
- Computational and Theoretical Chemistry Unit, Department of Chemistry, Faculty of Science, University of Douala P.O. Box 24157 Douala Cameroon
| | - Désiré Mama Bikele
- Computational and Theoretical Chemistry Unit, Department of Chemistry, Faculty of Science, University of Douala P.O. Box 24157 Douala Cameroon
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Dresler E, Wróblewska A, Jasiński R. Energetic Aspects and Molecular Mechanism of 3-Nitro-substituted 2-Isoxazolines Formation via Nitrile N-Oxide [3+2] Cycloaddition: An MEDT Computational Study. Molecules 2024; 29:3042. [PMID: 38998997 PMCID: PMC11243562 DOI: 10.3390/molecules29133042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/14/2024] Open
Abstract
Regioselectivity and the molecular mechanism of the [3+2] cycloaddition reaction between nitro-substituted formonitrile N-oxide 1 and electron-rich alkenes were explored on the basis of the wb97xd/6-311+G(d) (PCM) quantum chemical calculations. It was established that the thermodynamic factors allow for the formation of stable cycloadducts along all considered models. The analysis of the kinetic parameters of the main processes show that all [3+2] cycloadditions should be realized with full regioselectivity. In all cases, the formation of 5-substituted 3-nitro-2-isoxazolidines is clearly preferred. It is interesting that regiodirection is not determined by the local electrophile/nucleophile interactions but by steric effects. From a mechanistic point of view, all considered reactions should be treated as polar, one-step reactions. All attempts to locate the hypothetical zwitterionic intermediates along the cycloaddition paths were, however, not successful.
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Affiliation(s)
- Ewa Dresler
- Łukasiewicz Research Network-Institute of Heavy Organic Synthesis "Blachownia", Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland
| | - Aneta Wróblewska
- Department of Organic Chemistry, University of Lodz, Tamka 12, 91-403 Łódź, Poland
| | - Radomir Jasiński
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
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Hussein EM, Moussa Z, Al-Fahemi JH, Al-Rooqi MM, Obaid RJ, Malik MS, Abd-El-Aziz AS, Ahmed SA. Study on Regio- and Diastereoselectivity of the 1,3-Dipolar Cycloaddition Reaction of Azomethine Ylide with 2-(Benzo[ d]thiazol-2-yl)-3-(aryl)acrylonitrile: Synthesis, Spectroscopic, and Computational Approach. ACS OMEGA 2024; 9:23802-23821. [PMID: 38854577 PMCID: PMC11154954 DOI: 10.1021/acsomega.4c01552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 04/23/2024] [Accepted: 05/08/2024] [Indexed: 06/11/2024]
Abstract
An unprecedented and efficient three-component 1,3-dipolar cycloaddition reaction using (E)-2-(benzo[d]thiazol-2-yl)-3-(aryl)acrylonitriles 4a-g and an in situ generated azomethine ylide 3 from isatin and N-methylglycine is described. The reaction exhibits exclusive regioselectivity, resulting in the formation of 3'-(benzo[d]thiazol-2-yl)-1'-methyl-2-oxo-4'-(aryl)spiro[indoline-3,2'-pyrrolidine]-3'-carbonitriles regioisomers through exo/endo approaches. The diastereoselectivity of the reaction is highly dependent on the substitution pattern of the phenyl ring in dipolarophiles 4a-g, leading to the formation of exo-/endo-cycloadducts in varying ratios. To understand the stereoselectivity, the transition state structures were optimized using the TS guess geometry with the QST3-based method. The reaction mechanism and regioselectivity were elucidated by evaluating global and local electrophilicity and nucleophilicity descriptors at the B3LYP/cc-pVTZ level of theory, along with considerations based on the HSAB principle. The analysis of global electron density transfer (GEDT) showed that the reactions are polar and electron density fluxes from azomethine ylide 3 toward dipolarophile 4a-g. It was found from the molecular electrostatic potential map (MESP) that at the more favorable transition state, approach of reactants locates the oppositely charged regions over each other resulting in attractive forces between the two fragments. The computational results are consistent with the experimental observations, confirming that the reactions proceed through an asynchronous one-step mechanism.
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Affiliation(s)
- Essam M. Hussein
- Department
of Chemistry, Faculty of Science, Umm Al-Qura
University, 21955 Makkah, Saudi
Arabia
- Department
of Chemistry, Faculty of Science, Assiut
University, 71516 Assiut, Egypt
| | - Ziad Moussa
- Department
of Chemistry, College of Science, United
Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
| | - Jabir H. Al-Fahemi
- Department
of Chemistry, Faculty of Science, Umm Al-Qura
University, 21955 Makkah, Saudi
Arabia
| | - Munirah M. Al-Rooqi
- Department
of Chemistry, Faculty of Science, Umm Al-Qura
University, 21955 Makkah, Saudi
Arabia
| | - Rami J. Obaid
- Department
of Chemistry, Faculty of Science, Umm Al-Qura
University, 21955 Makkah, Saudi
Arabia
| | - M. Shaheer Malik
- Department
of Chemistry, Faculty of Science, Umm Al-Qura
University, 21955 Makkah, Saudi
Arabia
| | - Alaa S. Abd-El-Aziz
- Qingdao
Innovation and Development Center, Harbin
Engineering University, Qingdao, 266400, China
| | - Saleh A. Ahmed
- Department
of Chemistry, Faculty of Science, Umm Al-Qura
University, 21955 Makkah, Saudi
Arabia
- Department
of Chemistry, Faculty of Science, Assiut
University, 71516 Assiut, Egypt
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Dubey S, Mishra RK, Kaya S, Rene ER, Giri BS, Sharma YC. Microalgae derived honeycomb structured mesoporous diatom biosilica for adsorption of malachite green: Process optimization and modeling. CHEMOSPHERE 2024; 355:141696. [PMID: 38499077 DOI: 10.1016/j.chemosphere.2024.141696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 02/29/2024] [Accepted: 03/11/2024] [Indexed: 03/20/2024]
Abstract
The present study investigated the removal of malachite green dye from aquifers by means of microalgae-derived mesoporous diatom biosilica. The various process variables (dye concentration, pH, and adsorbent dose) influencing the removal of the dye were optimized and their interactive effects on the removal efficiency were explored by response surface methodology. The pH of the solution (pH = 5.26) was found to be the most dominating among other tested variables. The Langmuir isotherm (R2 = 0.995) best fitted the equilibrium adsorption data with an adsorption capacity of 40.7 mg/g at 323 K and pseudo-second-order model (R2 = 0.983) best elucidated the rate of dye removal (10.6 mg/g). The underlying mechanism of adsorption was investigated by Weber-Morris and Boyd models and results revealed that the film diffusion governed the overall adsorption process. The theoretical investigations on the dye structure using DFT-based chemical reactivity descriptors indicated that malachite green cations are electrophilic, reactive and possess the ability to accept electrons, and are strongly adsorbed on the surface of diatom biosilica. Also, the Fukui function analysis proposed the favorable adsorption sites available on the adsorbent surface.
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Affiliation(s)
- Shikha Dubey
- Department of Chemistry, School of Sciences, Hemvati Nandan Bahuguna Garhwal University, Srinagar (Garhwal) 246174, India; Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India.
| | - Rakesh K Mishra
- Department of Chemistry, National Institute of Technology, Uttarakhand (NITUK), Srinagar (Garhwal) 246174, India
| | - Savaş Kaya
- Department of Pharmacy, Health Services Vocational School, Sivas Cumhuriyet University, Sivas 58140, Turkey
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, Delft 2601DA, the Netherlands
| | - Balendu Shekher Giri
- Sustainability Cluster, University of Petroleum and Energy Studies (UPES), Dehradun, Uttarakhand 248007, India
| | - Yogesh C Sharma
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh 221005, India
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11
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Işık A, Acar Çevik U, Karayel A, Ahmad I, Patel H, Çelik İ, Gül Ü, Bayazıt G, Bostancı HE, Koçak A, Özkay Y, Kaplancıklı ZA. Synthesis, DFT Calculations, In Silico Studies, and Antimicrobial Evaluation of Benzimidazole-Thiadiazole Derivatives. ACS OMEGA 2024; 9:18469-18479. [PMID: 38680334 PMCID: PMC11044166 DOI: 10.1021/acsomega.4c00543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/08/2024] [Accepted: 03/25/2024] [Indexed: 05/01/2024]
Abstract
In this study, a series of new benzimidazole-thiadiazole hybrids were synthesized, and the synthesized compounds were screened for their antimicrobial activities against eight species of pathogenic bacteria and three fungal species. Azithromycin, voriconazole, and fluconazole were used as reference drugs in the mtt assay. Among them, compounds 5f and 5h showed potent antifungal activity against C. albicans with a MIC of 3.90 μg/mL. Further, the results of the antimicrobial assay for compounds 5a, 5b, 5f, and 5h proved to be potent against E. faecalis (ATCC 2942) on the basis of an acceptable MIC value of 3.90 μg/mL. The cytotoxic effects of compounds that are effective as a result of their antimicrobial activity on healthy mouse fibroblast cells (L929) were evaluated. According to HOMO-LUMO analysis, compound 5h (with the lower ΔE = 3.417 eV) is chemically more reactive than the other molecules, which is compatible with the highest antibacterial and antifungal activity results. A molecular docking study was performed to understand their binding modes within the sterol 14-α demethylase active site and to interpret their promising fungal inhibitory activities. Molecular dynamics (MD) simulations of the most potent compounds 5f and 5h were found to be quite stable in the active site of the 14-α demethylase (5TZ1) protein.
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Affiliation(s)
- Ayşen Işık
- Department
of Biochemistry, Faculty of Science, Selçuk
University, Konya, Turkey
| | - Ulviye Acar Çevik
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
| | - Arzu Karayel
- Department
of Physics, Faculty of Arts and Science, Hitit University, Çorum 19030, Turkey
| | - Iqrar Ahmad
- Department
of Pharmaceutical Chemistry, Prof. Ravindra
Nikam College of Pharmacy, Gondur, Dhule, Maharashtra 424002, India
| | - Harun Patel
- Division
of Computer Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education
and Research, Shirpur, Maharashtra 425405, India
| | - İsmail Çelik
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri 38039, Turkey
| | - Ülküye
Dudu Gül
- Department
of Bioengineering, Faculty of Engineering, Bilecik Seyh Edebali University, Bilecik, Turkey
| | - Gizem Bayazıt
- Department
of Biotechnology, Institute of Graduate Studies, Bilecik Seyh Edebali University, Bilecik, Turkey
| | - Hayrani Eren Bostancı
- Department
of Biochemistry, Faculty of Pharmacy, Cumhuriyet
University, Sivas, Turkey
| | - Ahmet Koçak
- Department
of Chemistry, Faculty of Science, Selçuk
University, Konya, Turkey
| | - Yusuf Özkay
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
| | - Zafer Asım Kaplancıklı
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir 26470, Turkey
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12
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Domingo LR, Ríos-Gutiérrez M. Revealing the Critical Role of Global Electron Density Transfer in the Reaction Rate of Polar Organic Reactions within Molecular Electron Density Theory. Molecules 2024; 29:1870. [PMID: 38675690 PMCID: PMC11053847 DOI: 10.3390/molecules29081870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
The critical role of global electron density transfer (GEDT) in increasing the reaction rate of polar organic reactions has been studied within the framework of Molecular Electron Density Theory (MEDT). To this end, the series of the polar Diels-Alder (P-DA) reactions of cyclopentadiene with cyanoethylene derivatives, for which experimental kinetic data are available, have been chosen. A complete linear correlation between the computed activation Gibbs free energies and the GEDT taking place at the polar transition state structures (TSs) is found; the higher the GEDT at the TS, the lower the activation Gibbs free energy. An interacting quantum atoms energy partitioning analysis allows for establishing a complete linear correlation between the electronic stabilization of the electrophilic ethylene frameworks and the GEDT taking place at the polar TSs. This finding supports Parr's proposal for the definition of the electrophilicity ω index. The present MEDT study establishes the critical role of the GEDT in the acceleration of polar reactions, since the electronic stabilization of the electrophilic framework with the electron density gain is greater than the destabilization of the nucleophilic one, making a net favorable electronic contribution to the decrease in the activation energy.
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Affiliation(s)
- Luis R. Domingo
- Department of Organic Chemistry, University of Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
| | - Mar Ríos-Gutiérrez
- Department of Organic Chemistry, University of Valencia, Dr. Moliner 50, 46100 Burjassot, Valencia, Spain
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13
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Guezane-Lakoud S, Ferrah M, Merabet-Khelassi M, Touil N, Toffano M, Aribi-Zouioueche L. 2-Hydroxymethyl-18-crown-6 as an efficient organocatalyst for α -aminophosphonates synthesized under eco-friendly conditions, DFT, molecular docking and ADME/T studies. J Biomol Struct Dyn 2024; 42:3332-3348. [PMID: 37184142 DOI: 10.1080/07391102.2023.2213336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 05/04/2023] [Indexed: 05/16/2023]
Abstract
Eco-friendly and simple procedure has been developed for the synthesis of α-aminophosphonates that act as topoisomerase II α-inhibiting anticancer agent, using 2-hydroxymethyl-18-crown-6 as an unexpected homogeneous organocatalyst in multicomponents reaction of aromatic aldehyde, aniline and diethylphosphite in one pot via Kabachnik-Fields reaction. This efficient method proceeds with catalytic amount, transition metal-free, at room temperature within short reaction time, giving the α-aminophosphonates derivatives (4a-r) in high chemical yields (up to 80%). Theoretical DFT calculations of three compounds (4p, 4q and 4r) were carried out in a gas phase at CAM-B3LYP 6-31G (d,p) basis set to predict the molecular geometries and chemical reactivity descriptors. The frontier orbital energies (HOMO/LUMO) were described the charge transfer and used to predict structure-activity relationship study. Molecular electrostatic potential (MEP) has also been analyzed. Molecular docking studies are implemented to analyze the binding energy and compared with Adriamycin against 1ZXM receptor which to be considered as antitumor candidates. In silico pharmacological ADMET properties as Drug likeness and oral activity have been carried out based on Lipinski's rule of five.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Samia Guezane-Lakoud
- Ecocompatible Asymmetric Catalysis Laboratory (LCAE) Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Meriem Ferrah
- Ecocompatible Asymmetric Catalysis Laboratory (LCAE) Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Mounia Merabet-Khelassi
- Ecocompatible Asymmetric Catalysis Laboratory (LCAE) Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Nourhane Touil
- Ecocompatible Asymmetric Catalysis Laboratory (LCAE) Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Martial Toffano
- Equipe de Catalyse Moléculaire-ICMMO Bât 420. Université Paris-Saclay, Paris, France
| | - Louisa Aribi-Zouioueche
- Ecocompatible Asymmetric Catalysis Laboratory (LCAE) Badji Mokhtar Annaba-University, Annaba, Algeria
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14
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Boutiddar R, Abbiche K, Mellaoui MD, Imjjad A, Alahiane M, Ait Albrimi Y, Marakchi K, Mogren Al-Mogren M, El Hammadi A, Hochlaf M. Insights into the mechanism of [3+2] cycloaddition reactions between N-benzyl fluoro nitrone and maleimides, its selectivity and solvent effects. J Comput Chem 2024; 45:284-299. [PMID: 37795767 DOI: 10.1002/jcc.27235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 10/06/2023]
Abstract
We present a theoretical study of the [3+2] cycloaddition (32CA) reactions of N-benzyl fluoro nitrone with a series of maleimides producing isoxazolidines. We use the Molecular Electron Density Theory at the MPWB1K/6-311G(d) level. We focus on the reaction mechanism, selectivity, solvent, and temperature effects. In addition, we perform topological analyses at the minimal and transition states to identify the intermolecular interactions. Electron Localization Function approach classifies the N-benzyl fluoro nitrone as zwitterionic (zw-) three-atom components (TACs), associated with a high energy barrier. The low polar character of the reaction is evaluated using the Conceptual Density Functional Theory analysis of the reactants, confirmed by the low global electron density transfer computed at the transition states. Computations show that these 32CA reactions follow a one-step mechanism under kinetic control, with highly asynchronous bond formation and no new covalent bond is formed at the TS. Besides, the potential energy surfaces along the reaction pathways in gas phase and in solvent are mapped. The corresponding Gibbs free energy profiles reveal that the exo-cycloadducts are kinetically and thermodynamically more favored than endo-cycloadducts, in agreement with the exo-selectivity observed experimentally. In particular, we found that solvent and temperature did not affect this selectivity and mainly influence the activation energies and the exothermic character of these 32CA reactions.
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Affiliation(s)
- Rachid Boutiddar
- Analysis, Modeling, Engineering, Natural Substances and Environment Laboratory, Polydisciplinary Faculty of Taroudant, Ibn Zohr University, Taroudant, Morocco
- Laboratoire de Spectroscopie, Modélisation Moléculaire, Matériaux, Nanomatériaux, Eau et Environnement, LS3MN2E/CERNE2D, Faculté des Sciences Rabat, Université Mohammed V, Rabat, Morocco
| | - Khalid Abbiche
- Analysis, Modeling, Engineering, Natural Substances and Environment Laboratory, Polydisciplinary Faculty of Taroudant, Ibn Zohr University, Taroudant, Morocco
- Laboratoire de Spectroscopie, Modélisation Moléculaire, Matériaux, Nanomatériaux, Eau et Environnement, LS3MN2E/CERNE2D, Faculté des Sciences Rabat, Université Mohammed V, Rabat, Morocco
- Applied Physical Chemistry Laboratory, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Moulay Driss Mellaoui
- Applied Physical Chemistry Laboratory, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Abdallah Imjjad
- Applied Physical Chemistry Laboratory, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Mustapha Alahiane
- Faculty of Sciences, Chemical Department, Ibn Zohr University, Agadir, Morocco
| | - Youssef Ait Albrimi
- Faculty of Sciences, Chemical Department, Ibn Zohr University, Agadir, Morocco
| | - Khadija Marakchi
- Laboratoire de Spectroscopie, Modélisation Moléculaire, Matériaux, Nanomatériaux, Eau et Environnement, LS3MN2E/CERNE2D, Faculté des Sciences Rabat, Université Mohammed V, Rabat, Morocco
| | | | - Abdellatif El Hammadi
- Analysis, Modeling, Engineering, Natural Substances and Environment Laboratory, Polydisciplinary Faculty of Taroudant, Ibn Zohr University, Taroudant, Morocco
| | - Majdi Hochlaf
- Université Gustave Eiffel, COSYS/IMSE, Champs sur Marne, France
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15
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Hashem MS, Fahim AM, Helaly FM. Designing a green poly(β-amino ester) for the delivery of nicotinamide drugs with biological activities and conducting a DFT investigation. RSC Adv 2024; 14:5499-5513. [PMID: 38352682 PMCID: PMC10862102 DOI: 10.1039/d3ra08585f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/02/2024] [Indexed: 02/16/2024] Open
Abstract
The environmentally friendly polymerization process was carried out using microwave irradiation without additional solvents or catalysts to produce poly(β-amino ester) (PβAE) which served as a drug delivery system. PβAE was synthesized through Michael addition polymerization of 1,4-butane diol diacrylate and piperazine. Swelling and biodegradation studies were conducted in various solvents and phosphate-buffered saline (PBS, pH 7.4) at 37 °C to evaluate the properties of the polymeric gel. The PβAE matrix demonstrated solubility enhancement for hydrophobic antimicrobial and antitumor-active nicotinamide derivatives (TEINH, APTAT, and MOAPM), controlling their release over 10 days in (PBS). The successful formation of free and loaded PβAE with nicotinamide active materials was confirmed by spectroscopic analysis including Fourier-transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Optimization and physical descriptor determination via the DFT/B3LYP-631(G) basis set were performed to aid in the biological evaluation of these compounds with elucidation of their physical and chemical interaction between poly(β-amino ester) and nicotinamide drugs.
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Affiliation(s)
- M S Hashem
- Polymers and Pigments Department, National Research Centre Dokki, P.O. Box. 12622 Giza Egypt
| | - Asmaa M Fahim
- Department of Green Chemistry, National Research Centre Dokki, P.O. Box. 12622 Giza Egypt
| | - F M Helaly
- Polymers and Pigments Department, National Research Centre Dokki, P.O. Box. 12622 Giza Egypt
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16
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Mendoza-Báez R, García-Toral D, Rivas-Silva JF, Camposeco ANS, Gómez SE, Cocoletzi GH, Flores-Riveros A. New Cap-Holed AlP, GaP, and InP Nanotubes. ACS OMEGA 2024; 9:2920-2930. [PMID: 38250395 PMCID: PMC10795121 DOI: 10.1021/acsomega.3c08486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 01/23/2024]
Abstract
The structural, vibrational, and electronic properties of new inorganic X-phosphide nanotubes (ch-XPNT), with X = Al, Ga, or In and chirality of (5,5), are investigated. These new NTs display cap-hole ends, with the cap-hole features induced by the nonpassivated ends. Studies are based on density functional theory (DFT) using the M06-2X, PBE, and B3LYP functionals together with the LanL2DZ basis set. All nanostructures have been relaxed by minimizing the total energy, assuming a nonmagnetic nature and a total neutral charge. Note that the cap-hole NTs are terminated by a 10-atom ring, which in turn favors the geometrical ordering and yields stable structures. The (5,5) ch-XPNT are highly electrophilic and nonpolar, in addition to having high solvation energy values. Let us remark that solvation energies are produced by the intermolecular forces that involve the induced dipoles. Structural and vibrational results show that the X-P bonds are single bonds. Finally, results suggest that the inorganic nanotubes are structurally stable with semiconductor features, which means that their functionalization may yield interesting future applications.
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Affiliation(s)
- Raúl Mendoza-Báez
- Departamento
de Química, Centro de Investigación
y de Estudios Avanzados del IPN (Cinvestav), Av. IPN 2508, Col. San Pedro Zacatenco, México City 07360, México
| | - Dolores García-Toral
- Facultad
de Ingeniería Química, Benemérita
Universidad Autónoma de Puebla, Av. San Claudio y 18 Sur S/N, San Manuel, Puebla 72570, México
| | | | - Akari Narayama Sosa Camposeco
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Av. San Claudio y Blvd. 18 Sur, Col. San Manuel, Puebla 72570, México
| | - Sandra Esteban Gómez
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Av. San Claudio y Blvd. 18 Sur, Col. San Manuel, Puebla 72570, México
| | - Gregorio Hernández Cocoletzi
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Av. San Claudio y Blvd. 18 Sur, Col. San Manuel, Puebla 72570, México
| | - Antonio Flores-Riveros
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Av. San Claudio y Blvd. 18 Sur, Col. San Manuel, Puebla 72570, México
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17
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Wang W, Zhu J, Huang Q, Zhu L, Wang D, Li W, Yu W. DFT Exploration of Metal Ion-Ligand Binding: Toward Rational Design of Chelating Agent in Semiconductor Manufacturing. Molecules 2024; 29:308. [PMID: 38257221 PMCID: PMC10819218 DOI: 10.3390/molecules29020308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 12/27/2023] [Accepted: 12/30/2023] [Indexed: 01/24/2024] Open
Abstract
Chelating agents are commonly employed in microelectronic processes to prevent metal ion contamination. The ligand fragments of a chelating agent largely determine its binding strength to metal ions. Identification of ligands with suitable characteristics will facilitate the design of chelating agents to enhance the capture and removal of metal ions from the substrate in microelectronic processes. This study employed quantum chemical calculations to simulate the binding process between eleven ligands and the hydrated forms of Ni2+, Cu2+, Al3+, and Fe3+ ions. The binding strength between the metal ions and ligands was quantified using binding energy and binding enthalpy. Additionally, we explored the binding interaction mechanisms and explained the differences in binding abilities of the eleven ligands using frontier molecular orbitals, nucleophilic indexes, electrostatic potentials, and energy decomposition calculations based on molecular force fields. Based on our computational results, promising chelating agent structures are proposed, aiming to guide the design of new chelating agents to address metal ion contamination issues in integrated circuit processes.
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Affiliation(s)
- Wenyuan Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (W.W.)
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; (Q.H.); (W.L.)
| | - Junli Zhu
- Shanghai Institute of IC Materials Co., Ltd., Shanghai 201899, China;
| | - Qi Huang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; (Q.H.); (W.L.)
- Shanghai Institute of IC Materials Co., Ltd., Shanghai 201899, China;
| | - Lei Zhu
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; (Q.H.); (W.L.)
| | - Ding Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (W.W.)
| | - Weimin Li
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; (Q.H.); (W.L.)
| | - Wenjie Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China; (W.W.)
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; (Q.H.); (W.L.)
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18
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Flores-Holguín N, Salas-Leiva JS, Núñez-Vázquez EJ, Tovar-Ramírez D, Glossman-Mitnik D. Marine Toxins as Pharmaceutical Treasure Troves: A Focus on Saxitoxin Derivatives from a Computational Point of View. Molecules 2024; 29:275. [PMID: 38202857 PMCID: PMC10780485 DOI: 10.3390/molecules29010275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/30/2023] [Accepted: 12/31/2023] [Indexed: 01/12/2024] Open
Abstract
This work highlights the significant potential of marine toxins, particularly saxitoxin (STX) and its derivatives, in the exploration of novel pharmaceuticals. These toxins, produced by aquatic microorganisms and collected by bivalve mollusks and other filter-feeding organisms, offer a vast reservoir of chemical and biological diversity. They interact with sodium channels in physiological processes, affecting various functions in organisms. Exposure to these toxins can lead to symptoms ranging from tingling sensations to respiratory failure and cardiovascular shock, with STX being one of the most potent. The structural diversity of STX derivatives, categorized into carbamate, N-sulfocarbamoyl, decarbamoyl, and deoxydecarbamoyl toxins, offers potential for drug development. The research described in this work aimed to computationally characterize 18 STX derivatives, exploring their reactivity properties within marine sponges using conceptual density functional theory (CDFT) techniques. Additionally, their pharmacokinetic properties, bioavailability, and drug-likeness scores were assessed. The outcomes of this research were the chemical reactivity parameters calculated via CDFT as well as the estimated pharmacokinetic and ADME properties derived using computational tools. While they may not align directly, the integration of these distinct datasets enriches our comprehensive understanding of the compound's properties and potential applications. Thus, this study holds promise for uncovering new pharmaceutical candidates from the considered marine toxins.
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Affiliation(s)
- Norma Flores-Holguín
- Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Chih, Mexico; (J.S.S.-L.); (D.G.-M.)
| | - Joan S. Salas-Leiva
- Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Chih, Mexico; (J.S.S.-L.); (D.G.-M.)
| | - Erick J. Núñez-Vázquez
- Centro de Investigaciones Biológicas del Noroeste, Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz 23096, BCS, Mexico; (E.J.N.-V.); (D.T.-R.)
| | - Dariel Tovar-Ramírez
- Centro de Investigaciones Biológicas del Noroeste, Av. Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz 23096, BCS, Mexico; (E.J.N.-V.); (D.T.-R.)
| | - Daniel Glossman-Mitnik
- Centro de Investigación en Materiales Avanzados, Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua 31136, Chih, Mexico; (J.S.S.-L.); (D.G.-M.)
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19
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Liu D, Guo X, Zhou S, Guo L, Zhang X. Mechanistic Insight into Lewis Acid-Catalyzed Cycloaddition of Bicyclo[1.1.0]butanes with Ketene: Bicyclo[1.1.0]butanes Serving as an Electrophile. J Org Chem 2024. [PMID: 38163764 DOI: 10.1021/acs.joc.3c02452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Lewis acid-catalyzed cycloaddition between bicyclo[1.1.0]butanes (BCBs) and unsaturated substrates has recently been demonstrated to be a powerful strategy for synthesizing bicyclo[2.1.1]hexanes. However, their reaction mechanisms remain elusive. This computational work explored the recently developed TMSOTf-catalyzed cycloaddition of BCB ketone to ketene and determined the rate-determining step as the activation of BCB ketone. Contrary to the previous proposal of BCB enolate as the active species, this work instead identified the catalytically active species to be a partially Lewis acid-activated BCB cation, which shows a greater electrophilicity and larger orbital interactions with ketene compared to those of the pristine BCB. The most favorable reaction pathway uniquely utilizes this activated BCB species as an electrophile to react with ketene as a nucleophile, while the previously proposed enolate is relatively inactive. Moreover, the in situ-generated TfO anion is revealed to be non-innocent, and its coordination mode and orientation could affect the reaction kinetics.
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Affiliation(s)
- Dan Liu
- School of Sciences, Great Bay University, Dongguan 523000, China
- Great Bay Institute for Advanced Study, Dongguan 523000, China
- Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, 710000 Shaanxi, China
| | - Xuefeng Guo
- Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, 710000 Shaanxi, China
| | - Shaoyuan Zhou
- School of Light Industry and Materials, Guangdong Polytechnic, Gaoming, Foshan 528000, China
| | - Luxuan Guo
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Xiaoyong Zhang
- School of Sciences, Great Bay University, Dongguan 523000, China
- Great Bay Institute for Advanced Study, Dongguan 523000, China
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20
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Dresler E, Woliński P, Wróblewska A, Jasiński R. On the Question of Zwitterionic Intermediates in the [3+2] Cycloaddition Reactions between Aryl Azides and Ethyl Propiolate. Molecules 2023; 28:8152. [PMID: 38138640 PMCID: PMC10745654 DOI: 10.3390/molecules28248152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/13/2023] [Accepted: 12/16/2023] [Indexed: 12/24/2023] Open
Abstract
The molecular mechanism of the [3+2] cycloaddition reactions between aryl azides and ethyl propiolate was evaluated in the framework of the Molecular Electron Density Theory. It was found that independently of the nature of the substituent within the azide molecule, the cycloaddition process is realized via a polar but single-step mechanism. All attempts of localization as postulated earlier by Abu-Orabi and coworkers' zwitterionic intermediates were not successful. At the same time, the formation of zwitterions with an "extended" conformation is possible on parallel reaction paths. The ELF analysis shows that the studied cycloaddition reaction leading to the 1,4-triazole proceeds by a two-stage one-step mechanism. It also revealed that both zwitterions are created by the donation of the nitrogen atom's nonbonding electron densities to carbon atoms of ethyl propiolate.
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Affiliation(s)
- Ewa Dresler
- Łukasiewicz Research Network—Institute of Heavy Organic Synthesis “Blachownia”, Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland;
| | - Przemysław Woliński
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland;
| | - Aneta Wróblewska
- Department of Organic Chemistry, Faculty of Chemistry, University of Lódź, Tamka 12, 91-403 Łódź, Poland;
| | - Radomir Jasiński
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland;
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21
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Emamian S, Soleymani M. Synthesis of tetrazoles through a domino reaction: A molecular electron density theory study of energetics, selectivities, and molecular mechanistic aspects. J Mol Graph Model 2023; 125:108596. [PMID: 37597310 DOI: 10.1016/j.jmgm.2023.108596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/25/2023] [Accepted: 08/06/2023] [Indexed: 08/21/2023]
Abstract
This study corresponds to a molecular electron density theory (MEDT) investigation to shed light on the energetics, selectivities, and molecular mechanistic aspects of an experimental domino reaction. Theoretical evidences at the M06-2X/6-31G(d) level indicates that this domino reaction includes three different successive steps and is initialized by a stepwise HCl elimination from precursor chlorohydrazone NPCH to yield nitrile imine NI-2. A subsequent stepwise and highly regioselective [3 + 2] cycloaddition (32CA) reaction of NI-2 toward tetramethylguanidine TMG-3 affords corresponding formal [3 + 2] cycloadduct CA-1 as the sole product. Finally, a stepwise HNMe2 elimination experienced by CA-1 leads to amino triazole ATA as an aromatic five-membered target product. Computed rate constants reveal that the HCl elimination step should be considered as the bottleneck of this domino reaction. However, a topological analysis of electron localization function (ELF) of NI-2 demonstrates a zwitterionic type (zw-type) 32 C A reaction is expected between NI-2 and TMG-3. This 32CA reaction also displays an almost noticeable polar character arising from moderate electrophilicity and strong nucleophilicity of NI-2 and TMG-3, respectively. The regioselectivity of 32CA reaction can be explained via analysis of Parr functions values calculated at the reactive sites of reagents. The molecular mechanism of the 32CA reaction was explored through portraying bond forming/breaking patterns involved in this polar, stepwise, and zw-type reaction by means of the ELF analysis. Indeed, formation of both C-N single bonds along the first and second steps takes place through coupling of the corresponding pseudoradical centers.
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Affiliation(s)
- Saeedreza Emamian
- Chemistry Department, Shahrood Branch, Islamic Azad University, Shahrood, Iran.
| | - Mousa Soleymani
- Chemistry Department, Faculty of Science, Ayatollah Boroujerdi University, Boroujerd, Iran.
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22
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Zekri A, Harkati D, Kenouche S, Saleh BA, Alnajjar R. A computational study of potent series of selective estrogen receptor degraders for breast cancer therapy. J Biomol Struct Dyn 2023; 41:11078-11100. [PMID: 36537313 DOI: 10.1080/07391102.2022.2159877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022]
Abstract
A detailed multistep framework combining quantitative structure-activity relationship, global reactivity, absorption, distribution, metabolism and elimination properties, molecular docking and molecular dynamics simulation (MD) on a series of Selective Estrogen Receptor Down-Regulators (SERDs) interacting with Estrogen Receptor α (ERα) has been performed. The partial least squares regression method derived an empirical model with better predictive capability. The results of global reactivity descriptors revealed that all the compounds are considered strong electrophiles, allowing them to participate in polar reactions more easily. The Brain Or IntestinaL EstimateD permeation diagram revealed that compounds 49 and 31 were predicted to be well absorbed by the human gastrointestinal tract and would not enter the brain. The elucidation of the binding mode between the most active compounds that comply with Lipinski's and Veber's rules from the dataset and ERα targets was explored by molecular docking. The MD simulations were performed for 100 ns on the best compounds, which indicated their stability state under dynamics simulations. These findings are expected to help predict the anticancer activities of the studied SERD compounds and better understand their binding mechanism with ERα targets.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Afaf Zekri
- Group of Computational and Pharmaceutical Chemistry, LMCE Laboratory, University of Biskra, Biskra, Algeria
| | - Dalal Harkati
- Group of Computational and Pharmaceutical Chemistry, LMCE Laboratory, University of Biskra, Biskra, Algeria
| | - Samir Kenouche
- Group of Modeling of Chemical Systems Using Quantum Calculations, Applied Chemistry Laboratory, University of Biskra, Biskra, Algeria
| | - Basil A Saleh
- Department of Chemistry, College of Science, University of Basrah, Basrah, Iraq
| | - Radwan Alnajjar
- Department of Chemistry, Faculty of Science, University of Benghazi, Benghazi, Libya
- Department of Chemistry, University of Cape Town, Rondebosch, South Africa
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23
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Zouaoui-Rabah M, Bekri L, Hedidi M, Elhorri AM, Madaoui Y. Characteristics of new pyrrolic derivatives and their oligomers using DFT and TD-DFT calculations. J Mol Model 2023; 29:364. [PMID: 37945908 DOI: 10.1007/s00894-023-05763-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/22/2023] [Indexed: 11/12/2023]
Abstract
CONTEXT This article is based on the study of pyrrolic derivatives and their oligomers. Knowing that, pyrrolic derivatives are widely studied on an industrial scale. The aim of this work is to find pyrrolic derivatives having the same physicochemical characteristics such as the pyrrolic edifice. Six derivatives were studied by substituting the hydrogens in the β position of the pyrroles with the following radicals: -CHO, -Cl, -CN, -NO, and -OH. The study was carried out theoretically using ab initio and density functional of theory (DFT) methods. In the first step, molecules of four units were taken into consideration in order to make the comparison between them. This comparison showed that the majority of molecules exhibited high intramolecular charge transfer (ICT) compared to the molecule composed of four pyrrolic units (OP4), and also exhibited strong nucleophilic and electrophilic characteristics. Natural bond orbital (NBO) analysis has shown continuous ICT mechanisms for certain molecules. The studied derivatives showed good solvation in several solvents compared to OP4. The molecules substituted by the radicals -CHO, -CN, -OH, and -NO generated several peaks in the excited states, which is the opposite case for the other molecules with a single peak. The effects of chain elongation revealed exponential equations generated by the two parameters energy gaps (ΔEH-L) and maximum wavelengths (λmax) as a function of the number of units (n). These equations were used to predict the maximum and minimum values of the above parameters for more elongated oligomers. METHOD The software used to make the calculations is Gaussian 16. All geometries were calculated by B3LYP functional and 6-31++G(d,p) basis set. The electronic parameters ΔEH-L were calculated by the following functionals: B3LYP, CAM-B3LYP, LC-wPBE, LC-BLYP, wB97X, M062X, M06HF, and M11 in addition to the second-order Møller-Plesset method (MP2) while always keeping the basis set mentioned before. An effect of basis set variation was studied by the optimal functional in combination with the following basis sets: 6-31G(d,p), 6-31++G(d,p), cc-pVDZ, AUG-cc-pVDZ, 6-311G(d,p), 6-311++G(d,p), cc-pVTZ, and AUG-cc-pVTZ. The NBO study was carried out with the M06HF/6-31++G(d,p) functional using the NBO method. The solvation parameters were calculated by M06HF/6-31++G(d,p) in the presence of the implicit solvation model Solvation Model based on Density (SMD). The excited states were calculated by M06HF/6-31++G(d,p) by the implicit solvation model Conductor Polarizable Continuum Model (CPCM).
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Affiliation(s)
- Mourad Zouaoui-Rabah
- Department of Preparatory Education in Science and Technology, National Polytechnic School of Oran Maurice Audin, P.O. Box 1523, Oran, El M'naouer, Algeria
- Laboratory of Materials Chemistry Catalysis and Reactivity, Department of Chemistry, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.O. Box 78C, 02180, Ouled Fares Chlef, Algeria
| | - Lahcène Bekri
- Departement of Chemistry, Faculty of Exact Sciences, Mustapha Stambouli, University of Mascara, Av. Cheikh El Khaldi, 29000, Mascara, Algeria
| | - Madani Hedidi
- Laboratory of Materials Chemistry Catalysis and Reactivity, Department of Chemistry, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.O. Box 78C, 02180, Ouled Fares Chlef, Algeria
- Departement of Chemistry, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.O. Box 78C, 02180, Ouled Fares Chlef, Algeria
| | - Abdelkader M Elhorri
- Laboratory of Materials Chemistry Catalysis and Reactivity, Department of Chemistry, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.O. Box 78C, 02180, Ouled Fares Chlef, Algeria.
- Departement of Chemistry, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.O. Box 78C, 02180, Ouled Fares Chlef, Algeria.
| | - Yemouna Madaoui
- Departement of Chemistry, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.O. Box 78C, 02180, Ouled Fares Chlef, Algeria
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24
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Hernández-Fernández J, Puello-Polo E, Marquez E. Experimental-Density Functional Theory (DFT) Study of the Inhibitory Effect of Furan Residues in the Ziegler-Natta Catalyst during Polypropylene Synthesis. Int J Mol Sci 2023; 24:14368. [PMID: 37762671 PMCID: PMC10532384 DOI: 10.3390/ijms241814368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/01/2023] [Accepted: 09/02/2023] [Indexed: 09/29/2023] Open
Abstract
In this experimental-theoretical study, the effect of furan on Ziegler-Natta catalyst productivity, melt flow index (MFI), and mechanical properties of polypropylene were investigated. Through the analysis of the global and local reactivity of the reagents, it was determined that the furan acts as an electron donor. In contrast, the titanium of the ZN catalyst acts as an electron acceptor. It is postulated that this difference in reactivity could lead to forming a furan-titanium complex, which blocks the catalyst's active sites and reduces its efficiency for propylene polymerization. Theoretical results showed a high adsorption affinity of furan to the active site of the Ti catalyst, indicating that furan tends to bind strongly to the catalyst, thus blocking the active sites and decreasing the availability for propylene polymerization. The experimental data revealed that the presence of furan significantly reduced the productivity of the ZN catalyst by 10, 20, and 41% for concentrations of 6, 12.23, and 25.03 ppm furan, respectively. In addition, a proportional relationship was observed between the furan concentration and the MFI melt index of the polymer, where the higher the furan concentration, the higher the MFI. Likewise, the presence of furan negatively affected the mechanical properties of polypropylene, especially the impact Izod value, with percentage decreases of 9, 18, and 22% for concentrations of 6, 12.23, and 25.03 ppm furan, respectively.
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Affiliation(s)
- Joaquín Hernández-Fernández
- Chemistry Program, Department of Natural and Exact Sciences, San Pablo Campus, University of Cartagena, Cartagena 130015, Colombia
- Chemical Engineering Program, School of Engineering, Universidad Tecnológica de Bolivar, Parque Industrial y Tecnológico Carlos Vélez Pombo, Cartagena 130001, Colombia
- Department of Natural and Exact Science, Universidad de la Costa, Barranquilla 080002, Colombia
| | - Esneyder Puello-Polo
- Group de Investigación en Oxi/Hidrotratamiento Catalítico Y Nuevos Materiales, Programa de Química-Ciencias Básicas, Universidad del Atlántico, Puerto Colombia 081001, Colombia;
| | - Edgar Marquez
- Grupo de Investigaciones en Química Y Biología, Departamento de Química Y Biología, Facultad de Ciencias Básicas, Universidad del Norte, Barranquilla 081007, Colombia
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25
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Sinha S, Das A, Giri S. Insights into the catalytic activity of boron-doped thiazoles in the Diels-Alder reaction. Phys Chem Chem Phys 2023; 25:23708-23716. [PMID: 37614158 DOI: 10.1039/d3cp02441e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
The role of boron-doped thiazoles as a Lewis acid catalyst in [4+2] cycloaddition reaction between 1,3-butadiene and acrolein has been addressed. Three different organic heterocycles were designed to study their catalytic activity. It has been observed that these heterocycles efficiently work as catalysts than the well-known Lewis acid BF3. All the reactions follow the normal electron demand process and are exothermic. Different conceptual DFT-based reactivity descriptors and electronic structure principles such as maximum hardness and minimum electrophilicity lend additional support to the feasibility of the reaction mechanism. The reaction force (RF), reaction electronic flux (REF), and its different components exhibit a detailed electronic activity throughout the reaction.
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Affiliation(s)
- Swapan Sinha
- School of Applied Science and Humanities, Haldia Institute of Technology, Haldia, 721657, India.
- Maulana Abul Kalam Azad University of Technology, Haringhata, 741249, India
| | - Abhishek Das
- School of Applied Science and Humanities, Haldia Institute of Technology, Haldia, 721657, India.
| | - Santanab Giri
- School of Applied Science and Humanities, Haldia Institute of Technology, Haldia, 721657, India.
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26
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Fahim AM, Dacrory S, Elsayed GH. Anti-proliferative activity, molecular genetics, docking analysis, and computational calculations of uracil cellulosic aldehyde derivatives. Sci Rep 2023; 13:14563. [PMID: 37666882 PMCID: PMC10477303 DOI: 10.1038/s41598-023-41528-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/28/2023] [Indexed: 09/06/2023] Open
Abstract
In this study, the oxidation of microcrystalline cellulose using NaIO4 to yield the corresponding cellulose aldehyde utilized microwave irradiation as a green tool, the obtained cellulosic aldehyde was confirmed through spectral analysis and it has an active site to react with the synthesized uracil acetamide to afford the corresponding arylidene cellulosic MDAU(4), the latter compound which can easily due to presence of active CH=group behind a cyano group react with nitrogen nucleophile's and cyclized with hydrazine hydrate to give pyrazole cellulosic MDPA(5). The spectral analysis of the obtained cellulosic derivatives was confirmed with FT-IR, NMR, and SEM. Additionally, a neutral red uptake analysis has been used to investigate the cytotoxic activity of the cellulosic compounds MDAC(2), MDAU(4), and MDAP(5) against the cancer cells A549 and Caco2. After 48 h, Compound MDAU(4) had a stronger inhibitory effect on the growth of A549 and Caco2, compared to standard values. Then, using QRT-PCR, the appearance sites of the genes -Catenin, c-Myc, Cyclin D1, and MMP7 in A549 cells were examined. By reducing the expression levels of the Wnt signaling cascade genes -Catenin, c-Myc, Cyclin D1, and MMP7 when administered to A549 cells, compound MDAU(4) was shown in this investigation to be a viable candidate compared to lung cancer. Additionally, docking simulation was used to explore the uracil cellulosic heterocycles attached to different proteins, and computational investigations of these compounds looked at how well their physical characteristics matched the outcomes of their experiments.
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Affiliation(s)
- Asmaa M Fahim
- Green Chemistry Department, National Research Centre (NRC), P.O. Box 12622, DokkiCairo, Egypt.
| | - Sawsan Dacrory
- Cellulose and Paper Department, National Research Centre, P.O. Box 12622, Giza, Egypt
| | - Ghada H Elsayed
- Department of Hormones, National Research Centre (NRC), P.O. Box 12622, Dokki, Giza, Egypt
- Stem Cells Lab, Center of Excellence for Advanced Sciences, National Research Centre (NRC), P.O. Box 1262, Dokki, Giza, Egypt
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27
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Dias LD, Aguiar ASN, de Melo NJ, Inada NM, Borges LL, de Aquino GLB, Camargo AJ, Bagnato VS, Napolitano HB. Structural basis of antibacterial photodynamic action of curcumin against S. aureus. Photodiagnosis Photodyn Ther 2023; 43:103654. [PMID: 37308043 DOI: 10.1016/j.pdpdt.2023.103654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/07/2023] [Accepted: 06/09/2023] [Indexed: 06/14/2023]
Abstract
Antimicrobial photodynamic therapy (aPDT) is an alternative tool to commercial antibiotics for the inactivation of pathogenic bacteria (e.g., S. aureus). However, there is still a lack of understanding of the molecular modeling of the photosensitizers and their mechanism of action through oxidative pathways. Herein, a combined experimental and computational evaluation of curcumin as a photosensitizer against S. aureus was performed. The radical forms of keto-enol tautomers and the energies of curcumin's frontier molecular orbitals were evaluated by density functional theory (DFT) to point out the photodynamic action as well as the photobleaching process. Furthermore, the electronic transitions of curcumin keto-enol tautomers were undertaken to predict the transitions as a photosensitizer during the antibacterial photodynamic process. Moreover, molecular docking was used to evaluate the binding affinity with the S. aureus tyrosyl-tRNA synthetase as the proposed a target for curcumin. In this regard, the molecular orbital energies show that the curcumin enol form has a character of 4.5% more basic than the keto form - the enol form is a more promising electron donor than its tautomer. Curcumin is a strong electrophile, with the enol form being 4.6% more electrophilic than its keto form. In addition, the regions susceptible to nucleophilic attack and photobleaching were evaluated by the Fukui function. Regarding the docking analysis, the model suggested that four hydrogen bonds contribute to the binding energy of curcumin's interaction with the ligand binding site of S. aureus tyrosyl-tRNA synthetase. Finally, residues Tyr36, Asp40, and Asp177 contact curcumin and may contribute to orienting the curcumin in the active area. Moreover, curcumin presented a photoinactivation of 4.5 log unit corroborating the necessity of the combined action of curcumin, light, and O2 to promote the photooxidation damage of S. aureus. These computational and experimental data suggest insights regarding the mechanism of action of curcumin as a photosensitizer to inactivate S. aureus bacteria.
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Affiliation(s)
- Lucas D Dias
- Laboratório de Novos Materiais, Universidade Evangélica de Goiás, Anápolis GO, Brazil; Grupo de Química Teórica e Estrutural de Anápolis, Universidade Estadual de Goiás, Anápolis, GO, Brazil.
| | - Antônio S N Aguiar
- Grupo de Química Teórica e Estrutural de Anápolis, Universidade Estadual de Goiás, Anápolis, GO, Brazil
| | - Nícolas J de Melo
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil
| | - Natalia M Inada
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil
| | - Leonardo L Borges
- Grupo de Química Teórica e Estrutural de Anápolis, Universidade Estadual de Goiás, Anápolis, GO, Brazil; Escola de Ciências Médicas e da Vida, Pontifícia Universidade Católica de Goiás, Goiânia, GO, Brazil
| | - Gilberto L B de Aquino
- Laboratório de Pesquisa em Bioprodutos e Síntese, Universidade Estadual de Goiás, Anápolis, GO, Brazil
| | - Ademir J Camargo
- Grupo de Química Teórica e Estrutural de Anápolis, Universidade Estadual de Goiás, Anápolis, GO, Brazil
| | - Vanderlei S Bagnato
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil; Department of Biomedical Engineering, Texas A&M University, College Station, TX, USA
| | - Hamilton B Napolitano
- Laboratório de Novos Materiais, Universidade Evangélica de Goiás, Anápolis GO, Brazil; Grupo de Química Teórica e Estrutural de Anápolis, Universidade Estadual de Goiás, Anápolis, GO, Brazil.
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28
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Boutadghart T, Ghailane R. A molecular electron density theory study of asymmetric Diels-Alder [4 + 2] reaction's mechanism of furan with three substituted alkynes (5-R substituted-3-(3-(phenylsulfonyl)-propioloyl)-oxazolidin-2-one). J Mol Model 2023; 29:290. [PMID: 37612461 DOI: 10.1007/s00894-023-05665-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 07/13/2023] [Indexed: 08/25/2023]
Abstract
CONTEXT The [4 +2 ] cycloaddition reactions between furan and three substituted alkynes (5-R-substituted-3-(3-(phenylsulfonyl)-propioloyl)-oxazolidin-2-one) have been investigated using the MEDT approach. Reactivity indices, reaction pathways, and activation energies are calculated. In an investigation of conceptual DFT indices, furan acts as a nucleophile, while the three substituted alkynes (5-R-substituted-3-(3-(phenylsulfonyl)-propioloyl)-oxazolidin-2-one) function as electrophiles in this reaction. The cycloaddition is regioiselective, as demonstrated by the activation and reaction energies, in clear agreement with the experiment's results. Hetero Diels-Alder [4 + 2] cycloadditions occur following a non-concerted two stages one-step molecular mechanism. METHODS For the purpose of this study, all calculations were performed using the Gaussian 09 software. Optimization was achieved through Berny's computational gradient optimization method, employing the B3LYP functional and the 6-31G(d) basis set. Analysis of both local and global reactivity indices provided insights into the reactivity tendencies of the reactants, distinguishing between electrophilic and nucleophilic characteristics via Parr functions. Frequency calculations were employed to identify and characterize stationary points, with transition states indicated by a single imaginary frequency and positive values of all frequencies for reactants and product. The electron localization function (ELF) was investigated using the Multiwfn software within the context of topological analyses.
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Affiliation(s)
- Tarik Boutadghart
- Laboratory of Organic Chemistry, Catalysis and Environment, Unit of Theoretical Chemistry and Modeling, Faculty of Sciences, University of Ibn Tofail, Po Box 133, 14000, Kenitra, Morocco
| | - Rachida Ghailane
- Laboratory of Organic Chemistry, Catalysis and Environment, Unit of Theoretical Chemistry and Modeling, Faculty of Sciences, University of Ibn Tofail, Po Box 133, 14000, Kenitra, Morocco.
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29
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Chataoui H, Mekkaoui AA, Elmouli H, Bahsis L, Anane H, El Houssame S. A DFT investigation of the catalytic oxidation of benzyl alcohol using graphene oxide. J Mol Model 2023; 29:288. [PMID: 37610432 DOI: 10.1007/s00894-023-05693-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 08/11/2023] [Indexed: 08/24/2023]
Abstract
CONTEXT Metal-free heterogeneous materials have attracted great interest due to their potential to facilitate various organic transformations in line with circular economy and green chemistry principles. Among various 2D materials, graphene oxide (GO) is considered an attractive material for numerous applications in physics, chemistry, biology, material sciences, and catalysis. Furthermore, graphene-based catalysts exhibit good catalytic activity toward the selective oxidation of benzyl alcohol to benzaldehyde or benzoic acid under eco-friendly conditions. In this regard, a theoretical investigation was carried out to study both catalytic oxidation reaction pathways (i.e., benzyl alcohols to aldehyde and to benzoic acid) using GO as an eco-friendly and metal-free catalyst. METHODS In this study, we report a theoretical investigation at the B3LYP/6-31G level to better understand the oxidation of benzyl alcohol using GO as a metal-free catalyst. The possible bond formation was investigated using the global and local reactivity indexes derived from Fukui functions. Furthermore, we performed a non-covalent interaction (NCI) analysis to unveil the stability and the interaction nature between both reagents and GO surface. The effect of the solvent on the oxidation efficiency was also performed and the results indicate that the solvent significantly affects the decrease of reactivity by increasing the activation barriers through oxidation reactions of benzyl alcohol. Additionally, the electron localization function (ELF) analysis was performed for all intermediates showing the ionic nature of the studied epoxide structure of GO and rules out any type of covalent interaction during the oxidation reaction of benzyl alcohol. All these obtained results are in good agreement with experimental observations and reveal that the epoxide functions on the graphene surface promote an excellent catalyst turnover.
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Affiliation(s)
- Hassan Chataoui
- Laboratoire Des Sciences Des Matériaux, Mathématiques Et Environnement, Faculté Polydisciplinaire de Khouribga, Université Sultan Moulay Slimane, BP 145, 25000, Khouribga, Morocco
| | - Ayoub Abdelkader Mekkaoui
- Laboratoire de Chimie Moléculaire, Equipe de Chimie de Coordination Et de Catalyse, Département de Chimie, Faculté Des Sciences Semlalia, Université Cadi Ayyad, BP 2390, 40001, Marrakech, Morocco
| | - Hamid Elmouli
- Laboratoire de Chimie Analytique Et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Safi, Morocco
| | - Lahoucine Bahsis
- Laboratoire de Chimie Analytique Et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Safi, Morocco
| | - Hafid Anane
- Laboratoire de Chimie Analytique Et Moléculaire, LCAM, Faculté Polydisciplinaire de Safi, Université Cadi Ayyad, Safi, Morocco
| | - Soufiane El Houssame
- Laboratoire Des Sciences Des Matériaux, Mathématiques Et Environnement, Faculté Polydisciplinaire de Khouribga, Université Sultan Moulay Slimane, BP 145, 25000, Khouribga, Morocco.
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30
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Dresler E, Wróblewska A, Jasiński R. Understanding the Molecular Mechanism of Thermal and LA-Catalysed Diels-Alder Reactions between Cyclopentadiene and Isopropyl 3-Nitroprop-2-Enate. Molecules 2023; 28:5289. [PMID: 37513163 PMCID: PMC10386420 DOI: 10.3390/molecules28145289] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/17/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
The molecular mechanism of the Diels-Alder reaction with the participation of cyclopentadiene and isopropyl 3-nitroprop-2-enate was examined based on wb97xd/6-311+G(d) (PCM) quantum chemical calculations. It was found that the type of mechanism for the conversion of addends depends significantly on the reaction conditions. In less-polar environments, a one-step polar mechanism is realised. In more polar solvents, the formation of "extended"-type zwitterionic intermediates is possible. In contrast, in the presence of an LA-type catalyst, the one-step mechanisms are replaced by respective stepwise mechanisms with zwitterionic or heterocyclic intermediates.
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Affiliation(s)
- Ewa Dresler
- Łukasiewicz Research Network-Institute of Heavy Organic Synthesis "Blachownia", Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland
| | - Aneta Wróblewska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Radomir Jasiński
- Institute of Organic Chemistry and Technology, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland
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Bhat S, Pradeep S, Patil SS, Flores-Holguín N, Glossman-Mitnik D, Frau J, Sommano SR, Ali N, Mohany M, Shivamallu C, Prasad SK, Kollur SP. Preliminary Evaluation of Lablab purpureus Phytochemicals for Anti-BoHV-1 Activity Using In Vitro and In Silico Approaches. ACS OMEGA 2023; 8:22684-22697. [PMID: 37396248 PMCID: PMC10308559 DOI: 10.1021/acsomega.3c01478] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 05/31/2023] [Indexed: 07/04/2023]
Abstract
Lablab purpureus from the Fabaceae family has been reported to have antiviral properties and used in traditional medical systems like ayurveda and Chinese medicine and has been employed to treat a variety of illnesses including cholera, food poisoning, diarrhea, and phlegmatic diseases. The bovine alphaherpesvirus-1 (BoHV-1) is notorious for causing significant harm to the veterinary and agriculture industries. The removal of the contagious BoHV-1 from host organs, particularly in those reservoir creatures, has required the use of antiviral drugs that target infected cells. This study developed LP-CuO NPs from methanolic crude extracts, and FTIR, SEM, and EDX analyses were used to confirm their formation. SEM analysis revealed that the LP-CuO NPs had a spherical shape with particle sizes between 22 and 30 nm. Energy-dispersive X-ray pattern analysis revealed the presence of only copper and oxide ions. By preventing viral cytopathic effects in the Madin-Darby bovine kidney cell line, the methanolic extract of Lablab purpureus and LP-CuO NPs demonstrated a remarkable dose-dependent anti-BoHV-1 action in vitro. Furthermore, molecular docking and molecular dynamics simulation studies of bio-actives from Lablab purpureus against the BoHV-1 viral envelope glycoprotein disclosed effective interactions between all phytochemicals and the protein, although kievitone was found to have the highest binding affinity, with the greatest number of interactions, which was also validated with molecular dynamics simulation studies. Understanding the chemical reactivity qualities of the four ligands was taken into consideration facilitated by the global and local descriptors, which aimed to predict the chemical reactivity descriptors of the studied molecules through the conceptual DFT methodology, which, along with ADMET finding, support the in vitro and in silico results.
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Affiliation(s)
- Smitha
S. Bhat
- Department
of Biotechnology and Bioinformatics, JSS
Academy of Higher Education and Research, Mysuru 570 015, India
| | - Sushma Pradeep
- Department
of Biotechnology and Bioinformatics, JSS
Academy of Higher Education and Research, Mysuru 570 015, India
| | - Sharanagouda S. Patil
- ICAR-National
Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Yelahanka, Bengaluru 560 064, India
| | - Norma Flores-Holguín
- Laboratorio
Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales Avanzados, Chihuahua, Chihuahua 31136, Mexico
| | - Daniel Glossman-Mitnik
- Laboratorio
Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales Avanzados, Chihuahua, Chihuahua 31136, Mexico
| | - Juan Frau
- Departament
de Química, Facultat de Ciences, Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain
| | - Sarana Rose Sommano
- Plant
Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Nemat Ali
- Department
of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohamed Mohany
- Department
of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Chandan Shivamallu
- Department
of Biotechnology and Bioinformatics, JSS
Academy of Higher Education and Research, Mysuru 570 015, India
| | - Shashanka K. Prasad
- Department
of Biotechnology and Bioinformatics, JSS
Academy of Higher Education and Research, Mysuru 570 015, India
- Plant
Bioactive Compound Laboratory, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Shiva Prasad Kollur
- School
of Physical Sciences, Amrita Vishwa Vidyapeetham,
Mysuru Campus, Mysuru, Karnataka 570 026, India
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32
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El-Shall FN, Fahim AM, Dacrory S. Making a new bromo-containing cellulosic dye with antibacterial properties for use on various fabrics using computational research. Sci Rep 2023; 13:10066. [PMID: 37344546 DOI: 10.1038/s41598-023-36688-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 06/08/2023] [Indexed: 06/23/2023] Open
Abstract
The reaction of cyanoethyl cellulose with para-bromo diazonium chloride resulted in the creation of a novel bromo-containing cellulosic (MCPT). The dispersion stability of MCPT has been improved by its dispersion into 1% waterborne polyurethane acrylate (WPUA). TEM, particle size, and zeta potential were used to track the dispersion stability of aqueous MCPT and MCPT in 1% WPUA and particle size. The prepared MCPT has been utilized as a unique green colorant (dye) for the printing of cotton, polyester, and cotton/polyester blend fabrics using a silkscreen printing technique through a single printing step and one color system. Color improvement has been achieved by printing different fabrics with a printing paste of MCPT dispersed in 1% WPUA. The MCPT and MCPT in 1% WPUA printed fabrics were evaluated for rubbing, light, washing, and perspiration fastness, UV blocking activity, and antibacterial activity. These findings were established through structural optimization at the DFT/B3LYP/6-31 (G) level and simulations involving several proteins.
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Affiliation(s)
- Fatma N El-Shall
- Dyeing, Printing and Textile Auxiliaries Department, National Research Centre, P.O. Box 12622, Dokki, Cairo, Egypt
| | - Asmaa M Fahim
- Green Chemistry Department, National Research Center, P.O. Box 12622, Dokki, Cairo, Egypt.
| | - Sawsan Dacrory
- Cellulose and Paper Department, National Research Centre, Giza, 12622, Egypt
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Chan K, Ta LT, Huang Y, Su H, Lin Z. Incorporating Domain Knowledge and Structure-Based Descriptors for Machine Learning: A Case Study of Pd-Catalyzed Sonogashira Reactions. Molecules 2023; 28:4730. [PMID: 37375286 DOI: 10.3390/molecules28124730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/10/2023] [Accepted: 06/10/2023] [Indexed: 06/29/2023] Open
Abstract
Machine learning has revolutionized information processing for large datasets across various fields. However, its limited interpretability poses a significant challenge when applied to chemistry. In this study, we developed a set of simple molecular representations to capture the structural information of ligands in palladium-catalyzed Sonogashira coupling reactions of aryl bromides. Drawing inspiration from human understanding of catalytic cycles, we used a graph neural network to extract structural details of the phosphine ligand, a major contributor to the overall activation energy. We combined these simple molecular representations with an electronic descriptor of aryl bromide as inputs for a fully connected neural network unit. The results allowed us to predict rate constants and gain mechanistic insights into the rate-limiting oxidative addition process using a relatively small dataset. This study highlights the importance of incorporating domain knowledge in machine learning and presents an alternative approach to data analysis.
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Affiliation(s)
- Kalok Chan
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Long Thanh Ta
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Yong Huang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Haibin Su
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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Salih SAM, Basheer HA, de Julián-Ortiz JV, Mohammad-Salim HA. Unveiling the Stereoselectivity and Regioselectivity of the [3+2] Cycloaddition Reaction between N-methyl-C-4-methylphenyl-nitrone and 2-Propynamide from a MEDT Perspective. Int J Mol Sci 2023; 24:ijms24109102. [PMID: 37240445 DOI: 10.3390/ijms24109102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/15/2023] [Accepted: 05/18/2023] [Indexed: 05/28/2023] Open
Abstract
[3+2] cycloaddition reactions play a crucial role in synthesizing complex organic molecules and have significant applications in drug discovery and materials science. In this study, the [3+2] cycloaddition (32CA) reactions of N-methyl-C-4-methyl phenyl-nitrone 1 and 2-propynamide 2, which have not been extensively studied before, were investigated using molecular electron density theory (MEDT) at the B3LYP/6-311++G(d,p) level of theory. According to an electron localization function (ELF) study, N-methyl-C-4-methyl phenyl-nitrone 1 is a zwitterionic species with no pseudoradical or carbenoid centers. Conceptual density functional theory (CDFT) indices were used to predict the global electronic flux from the strong nucleophilic N-methyl-C-4-methyl phenylnitrone 1 to the electrophilic 2-propynamide 2 functions. The 32CA reactions proceeded through two pairs of stereo- and regioisomeric reaction pathways to generate four different products: 3, 4, 5, and 6. The reaction pathways were irreversible owing to their exothermic characters: -136.48, -130.08, -130.99, and -140.81 kJ mol-1, respectively. The enthalpy of the 32CA reaction leading to the formation of cycloadduct 6 was lower compared with the other path owing to a slight increase in its polar character, observed through the global electron density transfer (GEDT) during the transition states and along the reaction path. A bonding evolution theory (BET) analysis showed that these 32CA reactions proceed through the coupling of pseudoradical centers, and the formation of new C-C and C-O covalent bonds did not begin in the transition states.
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Affiliation(s)
| | - Huda A Basheer
- Faculty of Science, Department of Chemistry, University of Zakho, Duhok 42001, Iraq
| | - Jesus Vicente de Julián-Ortiz
- Molecular Topology and Drug Design Research Unit, Department of Physical Chemistry, Pharmacy Faculty, University of Valencia, 46100 Valencia, Spain
| | - Haydar A Mohammad-Salim
- Faculty of Science, Department of Chemistry, University of Zakho, Duhok 42001, Iraq
- Molecular Topology and Drug Design Research Unit, Department of Physical Chemistry, Pharmacy Faculty, University of Valencia, 46100 Valencia, Spain
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35
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Sobhi C, Merzoud L, Bouasla S, Nacereddine AK, Morell C, Chermette H. Understanding the mechanism and regio- and stereo selectivity of [3 + 2] cycloaddition reactions between substituted azomethine ylide and 3,3,3-trifluoro-1-nitroprop-1-ene, within the molecular electron density theory. J Comput Chem 2023; 44:1208-1220. [PMID: 36708224 DOI: 10.1002/jcc.27080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/10/2022] [Accepted: 01/04/2023] [Indexed: 01/29/2023]
Abstract
The selectivity and the nature of the molecular mechanism of the [3 + 2] cycloaddition (32CA) reaction between 2-(dimethylamino)-1H-indene-1,3(2H)-dione (AY11) and trans(E)-3,3,3-trifluoro-1-nitroprop-1-ene(FNP10) has been studied, in which the molecular electron density theory using density functional theory methods at the MPWB1K/6-31G(d) computational level was used. Analysis of the global reactivity indices permits us to characterize FNP10 as a strong electrophile and AY11 as a strong nucleophile. Four reactive pathways associated with the ortho/meta regioselective channels and endo/exo stereoselective approaches modes have been explored and characterized in the gas phase and in the benzene solvent. The analysis of the relative energies associated with the different reaction pathways indicates that the 32CA reactions of the azomethine ylide (AY) with the nitroalkene (FNP) is meta regioselective with high endo stereoselectivity. This result is in good agreement with the experimental observations. electron localization function topological analysis of the most favored reactive pathways allows for characterizing the mechanism of this 32CA reactions as a non-concerted two-stage one-step mechanism. Finally, non-covalent interactions and quantum theory of atoms in molecule analyses at the meta/endo transition state structure indicate that the presence of different several weak interactions, namely, CF and NH contributed in favoring the formation of a meta-endo cycloadduct.
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Affiliation(s)
- Chafia Sobhi
- Laboratoire Physico-Chimie Des Surfaces Et Interfaces, Université du 20 Août 1955, Skikda, Algeria
| | - Lynda Merzoud
- Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMRCNRS 5280, Université de Lyon, Lyon, France
| | - Souad Bouasla
- Laboratory of Materials and Energetic Engineering, Faculty of Technology, University 20 August 1955, Skikda, Algeria
| | - Abdelmalek Khorief Nacereddine
- Laboratory of Physical Chemistry and Biology of Materials, Department of Physics and Chemistry, Higher Normal School for Technological Education of Skikda, Azzaba, Skikda, Algeria
| | - Christophe Morell
- Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMRCNRS 5280, Université de Lyon, Lyon, France
| | - Henry Chermette
- Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, UMRCNRS 5280, Université de Lyon, Lyon, France
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36
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Abdullah H, Abdulai AY, Tia R, Adei E. Quantum Mechanical Elucidation on [3+2] cycloaddition reaction of aryl nitrile oxide with cyclopentenones. J Mol Graph Model 2023; 120:108421. [PMID: 36706571 DOI: 10.1016/j.jmgm.2023.108421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/30/2022] [Accepted: 01/19/2023] [Indexed: 01/24/2023]
Abstract
The [3 + 2] cycloaddition (32CA) reaction of benzonitrile oxide (BNO) with 4-substituted 4-hydroxy-2-cyclopentenone has been investigated using molecular electron density theory (MEDT) at the Density Functional Theory (DFT) B3LYP/6-31G (d), M06/6-311G (d,p) and M06-2X/6-311++G (d,p) levels. The present theoretical computations indicate that the reaction of BNO with 4-substituted 4-hydroxy-2-cyclopentenones is via [3 + 2] cycloaddition, where the three atom component (TAC) chemo-selectively adds across the alkene functionality in the 2-cyclopentenones (Path A). Analysis of the electrophilic PA+ and nucleophilic PA- Parr functions at the different reaction sites in the alkene counterpart indicates that the aryl nitrile oxides add across the atomic centers with the highest Mulliken atomic spin densities. The results reported in this study are in good agreement with previous experimental work. The GEDT calculations unravel the low polar character of the [3 + 2] cycloaddition reactions. This reaction occurs with poor enantioselectivity, but a high degree of stereo-, peri-, diastereo, and regioselectivity is seen for the reaction of the BNO with 4-hydroxy-4-methyl-2-cyclopentenones. The regioselectivity of the reactions is the same in all the solvents investigated.
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Affiliation(s)
- Harun Abdullah
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Ahmed Yusif Abdulai
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Richard Tia
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Evans Adei
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
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37
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Amankwah G, Ofori I, Atta-Kumi J, Kwawu CR, Tia R, Adei E. A quantum mechanistic insight into the chemo- and regio-selective [3 + 2]-cycloaddition reaction of aryl hetaryl thioketones with diazoalkanes and nitrile oxide derivatives. J Mol Graph Model 2023; 120:108418. [PMID: 36709702 DOI: 10.1016/j.jmgm.2023.108418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 01/10/2023] [Accepted: 01/13/2023] [Indexed: 01/22/2023]
Abstract
In this quantum mechanistic study, density functional theory computations at the B3LYP hybrid level of theory, in addition to triple zeta basis set 6-311G (d, p), were utilized to investigate the chemoselectivities and regioselectivities of the [3 + 2] cycloaddition reaction of phenyl (2-thienyl) thioketone (B1) derivatives with nitrile oxide (B2) and diazopropane derivatives (B3). From the computations obtained, the reactions of nitrile oxide and diazopropane derivatives with phenyl (2-thienyl) thioketone proceed through an asynchronous one-step mechanism. The initial [3 + 2] cycloaddition reaction of B1 and B3 is followed by a nitrogen extrusion which is also highly asynchronous. Despite the steric and electronic effects of the substituent on the energetics, the reaction center is selectively observed at the thiocarbonyl site of B1. A study of the Parr functions at the different reaction sites in B1 indicates the addition of B2 and B3 via the atomic centers with the largest Mulliken atomic spin densities. These results show that the thiocarbonyl site is the most reactive center compared to the other ethylene groups on B1, irrespective of the three atom components used. The global electron density transfer results are in agreement with the selectivity and activation barriers observed in the reaction. Our results agree well with experimental observations.
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Affiliation(s)
- Gabriel Amankwah
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Isaac Ofori
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Joshua Atta-Kumi
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Caroline R Kwawu
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Richard Tia
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Evans Adei
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
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38
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Mellaoui MD, Acharjee N, Imjjad A, Koubachi J, El Hammadi A, Bourzi H, El Issami S, Zejli H, Hochlaf M, Abbiche K. Unveiling the mechanism, selectivity, solvent and temperature effects on the [3 + 2] cycloaddition reaction of N-methyl-C-(2-furyl) nitrone with maleimide derivatives from the molecular electron density theory perspective. Theor Chem Acc 2023. [DOI: 10.1007/s00214-023-02972-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
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39
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González-González S, Franco-Pérez M, Jardínez C, Cariño-Moreno JJ, Ramírez-Sotelo MG, Zamudio-Medina A. Synthesis, characterization, and quantum chemistry local chemical reactivity description of new phosphorylated derivatives of piperazine. PHOSPHORUS SULFUR 2023. [DOI: 10.1080/10426507.2023.2193404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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40
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Liang H, Wei Y, Ji Y. Magnetic-responsive Covalent Adaptable Networks. Chem Asian J 2023; 18:e202201177. [PMID: 36645376 DOI: 10.1002/asia.202201177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/07/2023] [Accepted: 01/16/2023] [Indexed: 01/17/2023]
Abstract
Covalent adaptable networks (CANs) are reprocessable polymers whose structural arrangement is based on the recombination of dynamic covalent bonds. Composite materials prepared by incorporating magnetic particles into CANs attract much attention due to their remote and precise control, fast response speed, high biological safety and strong penetration of magnetic stimuli. These properties often involve magnetothermal effect and direct magnetic-field guidance. Besides, some of them can also respond to light, electricity or pH values. Thus, they are favorable for soft actuators since various functions are achieved such as magnetic-assisted self-healing (heating or at ambient temperature), welding (on land or under water), shape-morphing, and so on. Although magnetic CANs just start to be studied in recent two years, their advances are promised to expand the practical applications in both cutting-edge academic and engineering fields. This review aims to summarize recent progress in magnetic-responsive CANs, including their design, synthesis and application.
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Affiliation(s)
- Huan Liang
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Yen Wei
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.,Department of Chemistry, Center for Nanotechnology and Institute of Biomedical Technology, Chung-Yuan Christian University Chung-Li, 32023, Taiwan, P. R. China
| | - Yan Ji
- The Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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41
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Boukabcha N, Benmohammed A, Belhachemi MHM, Goudjil M, Yahiaoui S, Megrouss Y, Djafri A, Khelloul N, Benyehlou ZD, Djafri A, Chouaih A. Spectral investigation, TD-DFT study, Hirshfeld Surface analysis, NCI-RDG, HOMO-LUMO, chemical reactivity and NLO properties of 1-(4-fluorobenzyl)-5-bromolindolin-2,3-dione. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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42
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Research on the Electron Structure and Antimicrobial Properties of Mandelic Acid and Its Alkali Metal Salts. Int J Mol Sci 2023; 24:ijms24043078. [PMID: 36834487 PMCID: PMC9962254 DOI: 10.3390/ijms24043078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/01/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023] Open
Abstract
This article investigated the structure, and the spectroscopic and antimicrobial properties of mandelic acid and its alkali metal salts. The electron charge distribution and aromaticity in the analyzed molecules were investigated using molecular spectroscopy methods (FT-IR, FT-Raman, 1H NMR, and 13C NMR) and theoretical calculations (structure, NBO, HOMO, LUMO, energy descriptors, and theoretical IR and NMR spectra). The B3LYP/6-311++G(d,p) method was used in the calculations. The antimicrobial activities of mandelic acid and its salt were tested against six bacteria: Gram-positive Listeria monocytogenes ATCC 13932, Staphylococcus aureus ATCC 25923, Bacillus subtilis ATCC 6633, and Loigolactobacillus backii KKP 3566; Gram-negative Escherichia coli ATCC 25922 and Salmonella Typhimurium ATCC 14028, as well as two yeast species, Rhodotorulla mucilaginosa KKP 3560 and Candida albicans ATCC 10231.
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43
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Palakkeezhillam VNV, Haribabu J, Manakkadan V, Rasin P, Varughese RE, Gayathri D, Bhuvanesh N, Echeverria C, Sreekanth A. Synthesis, spectroscopic characterizations, single crystal X-ray analysis, DFT calculations, in vitro biological evaluation and in silico evaluation studies of thiosemicarbazones based 1,3,4-thiadiazoles. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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44
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Antioxidant activity of new synthesized imine and its corresponding α-aminophosphonic acid: Experimental and theoretical evaluation. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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45
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Synthesis, biological activities, molecular docking, theoretical calculations of some 1,3,4-oxadiazoles, 1,2,4-triazoles, and 1,2,4-triazolo[3,4-b]-1,3,4-thiadiazines derivatives. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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46
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Pal R, Chattaraj PK. Electrophilicity index revisited. J Comput Chem 2023; 44:278-297. [PMID: 35546516 DOI: 10.1002/jcc.26886] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/30/2022] [Accepted: 04/22/2022] [Indexed: 01/03/2023]
Abstract
This review aims to be a comprehensive, authoritative, critical, and accessible review of general interest to the chemistry community; because the electrophilicity index is a very useful global reactivity descriptor defined within a conceptual density functional theory framework. Our group has also introduced electrophilicity based new global and local reactivity descriptors and also new associated electronic structure principles, which are important indicators of structure, stability, bonding, reactivity, interactions, and dynamics in a wide variety of physico-chemical systems and processes. This index along with its local counterpart augmented by the associated electronic structure principles could properly explain molecular vibrations, internal rotations and various types of chemical reactions. The concept of the electrophilicity index has been extended to dynamical processes, excited states, confined environment, spin-dependent and temperature-dependent situations, biological activity, site selectivity, aromaticity, charge removal and acceptance, presence of external perturbation through solvents, external electric and magnetic fields, and so forth. Although electrophilicity and its local variant can adequately interpret the behavior of a wide variety of systems and different physico-chemical processes involving them, their predictive potential remains to be explored. An exhaustive review on all these aspects will set the tone of the future research in that direction.
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Affiliation(s)
- Ranita Pal
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur, India
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47
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Cuesta SA, Moreno M, López RA, Mora JR, Paz JL, Márquez EA. ElectroPredictor: An Application to Predict Mayr's Electrophilicity E through Implementation of an Ensemble Model Based on Machine Learning Algorithms. J Chem Inf Model 2023; 63:507-521. [PMID: 36594600 DOI: 10.1021/acs.jcim.2c01367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Electrophilicity (E) is one of the most important parameters to understand the reactivity of an organic molecule. Although the theoretical electrophilicity index (ω) has been associated with E in a small homologous series, the use of w to predict E in a structurally heterogeneous set of compounds is not a trivial task. In this study, a robust ensemble model is created using Mayr's database of reactivity parameters. A combination of topological and quantum mechanical descriptors and different machine learning algorithms are employed for the model's development. The predictability of the model is assessed using different statistical parameters, and its validation is examined, including a training/test partition, an applicability domain, and a y-scrambling test. The global ensemble model presents a Q5-fold2 of 0.909 and a Qext2 of 0.912, demonstrating an excellent predictability performance of E values and showing that w is not a good descriptor for the prediction of E, especially for the case of neutral compounds. ElectroPredictor, a noncommercial Python application (https://github.com/mmoreno1/ElectroPredictor), is developed to predict E. QM9, a well-known large dataset containing 133885 neutral molecules, is used to perform a virtual screening (94.0% coverage). Finally, the 10 most electrophilic molecules are analyzed as possible new Mayr's electrophiles, which have not yet been experimentally tested. This study confirms the necessity to build an ensemble model using nonlinear machine learning algorithms, topographic descriptors, and separating molecules into charged and neutral compounds to predict E with precision.
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Affiliation(s)
- Sebastián A Cuesta
- Instituto de Simulación Computacional (ISC-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Diego de Robles y Vía Interoceánica, Quito170901, Ecuador
- Department of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, ManchesterM1 7DN, U.K
| | - Martín Moreno
- Instituto de Simulación Computacional (ISC-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Diego de Robles y Vía Interoceánica, Quito170901, Ecuador
| | - Romina A López
- Colegio San Ignacio de Loyola─Fe y Alegría, Ministerio de Educación, Quito170901, Ecuador
| | - José R Mora
- Instituto de Simulación Computacional (ISC-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Diego de Robles y Vía Interoceánica, Quito170901, Ecuador
| | - José Luis Paz
- Departamento Académico de Química Inorgánica, Facultad de Química e Ingeniería Química, Universidad Nacional Mayor de San Marcos, Cercado de Lima, Lima15081, Peru
| | - Edgar A Márquez
- Grupo de Investigaciones en Química y Biología, Departamento de Química y Biología, Facultad de Ciencias Exactas, Universidad del Norte, Carrera 51B, Km 5, vía Puerto Colombia, Barranquilla081007, Colombia
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Filkina ME, Baray DN, Beloglazkina EK, Grishin YK, Roznyatovsky VA, Kukushkin ME. Regioselective Cycloaddition of Nitrile Imines to 5-Methylidene-3-phenyl-hydantoin: Synthesis and DFT Calculations. Int J Mol Sci 2023; 24:1289. [PMID: 36674803 PMCID: PMC9864863 DOI: 10.3390/ijms24021289] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/04/2023] [Accepted: 01/07/2023] [Indexed: 01/11/2023] Open
Abstract
Nitrile imine cycloaddition to hydantoins containing an exocyclic C=C double bond has been previously described in a very limited number of examples. In this work, regioselective synthesis of spiro-pyrazoline-imidazolidine-2,4-diones based on a 1,3-dipolar cycloaddition reaction of nitrile imines to 5-methylidene-3-phenyl-hydantoin have been proposed. It was found that, regardless of the nature of the aryl substituents at the terminal C and N atoms of the C-N-N fragment of nitrile imine (electron donor or electron acceptor), cycloaddition to the 5-methylidenhydantoin exocyclic C=C bond proceeds regioselectively, and the terminal nitrogen atom of the nitrile imine connects to the more sterically hindered carbon atom of the double bond, which leads to the formation of a 5-disubstituted pyrazoline ring. The observed cycloaddition regioselectivity was rationalized using DFT calculations of frontier molecular orbital interactions, global CDFT reactivity indices, and minimum energy paths.
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Affiliation(s)
| | | | - Elena K. Beloglazkina
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory, 1-3, 119991 Moscow, Russia
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Wang T, Husein DZ. Novel synthesis of multicomponent porous nano-hybrid composite, theoretical investigation using DFT and dye adsorption applications: disposing of waste with waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:8928-8955. [PMID: 35460480 DOI: 10.1007/s11356-022-20050-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
Extensive studies have shown that doping can enhance the properties of graphene, but the application to real industrial wastewater treatment and theoretical calculations are limited. In this study, the hybrid nanoadsorbent Cu, N co-doped graphene (Cu@NG) was successfully synthesized via green route using carbon rods from waste dry batteries, human urine and copper nitrate, then multiple characterizations, detailed density functional theory (DFT) theoretical calculations and comprehensive actual wastewater tests are performed in environmental applications to investigate the adsorption properties and mechanism. The results showed that Cu@NG surface is mesoporous, decorated with CuO crystals and doped with N atoms. The isotherms and kinetics were simulated by Langmuir and pseudo-second-order models, respectively. The theoretical maximum sorption for MB and CV on Cu@NG is 116.28 mg·g-1 and CV is 86.96 mg·g-1, respectively. Pilot tests with Cu@NG on real textile wastewater showed that COD, BOD and color were removed by 54.2%, 55.2% and 86.4%, respectively. The desorption rate of Cu@NG is approximately above 90% for both MB and CV on Cu@NG after six cycles of treatment. The DFT calculations confirmed the experimental results as MB is more reactive than CV molecules. Besides, interactions have been systematically investigated via topology and natural bond orbital (NBO) analyses. The process mechanism involved mainly electrostatic adsorption, π-π stacking interactions and H-bonding interactions and ion exchange.
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Affiliation(s)
- Tongtong Wang
- College of Natural Resources and Environment, Northwest A & F University, Yangling, 712100, China
| | - Dalal Z Husein
- Chemistry Department, Faculty of Science, New Valley University, El-Kharja, 72511, Egypt.
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50
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The Crystal Structure, Hirshfeld Surface interactions, optical/Nonlinear Optical properties and evaluation of the antioxidant activity of 8-(3-chloropropanamido)quinolin-1-ium chloride: Experimental and theoretical studies. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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