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Hoffmann G, Guégan F, Labet V, Joubert L, Chermette H, Morell C, Tognetti V. Expanding horizons in conceptual density functional theory: Novel ensembles and descriptors to decipher reactivity patterns. J Comput Chem 2024. [PMID: 38580454 DOI: 10.1002/jcc.27363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 02/16/2024] [Accepted: 02/22/2024] [Indexed: 04/07/2024]
Abstract
Conceptual density functional theory (CDFT) and the quantum reactivity descriptors stemming from it have proven to be valuable tools for understanding the chemical behavior of molecules. This article is presented as being intrinsically of dual character. In a first part, it briefly reviews, in a deliberately didactical way, the main ensembles in CDFT, while the second half presents two additional ensembles, where the chemical hardness acts as a natural variable, and their respective reactivity descriptors. The evaluation of these reactivity descriptors on common organic chemical reagents are presented and discussed.
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Affiliation(s)
- Guillaume Hoffmann
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Villeurbanne, France
| | - Frédéric Guégan
- IC2MP UMR 7285, Université de Poitiers - CNRS, Poitiers, France
| | - Vanessa Labet
- Sorbonne Université CNRS, MONARIS, UMR8233, Paris, France
| | - Laurent Joubert
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, Rouen, France
| | - Henry Chermette
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Villeurbanne, France
| | - Christophe Morell
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Villeurbanne, France
| | - Vincent Tognetti
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA UMR 6014, INC3M FR 3038, Rouen, France
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Cador A, Tognetti V, Joubert L, Popelier PLA. Aza-Michael Addition in Explicit Solvent: A Relative Energy Gradient-Interacting Quantum Atoms Study. Chemphyschem 2023:e202300529. [PMID: 37728125 DOI: 10.1002/cphc.202300529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/09/2023] [Accepted: 09/17/2023] [Indexed: 09/21/2023]
Abstract
Aza-Michael additions are key reactions in organic synthesis. We investigate, from a theoretical and computational point of view, several examples ranging from weak to strong electrophiles in dimethylsulfoxide treated as explicit solvent. We use the REG-IQA method, which is a quantum topological energy decomposition (Interacting Quantum Atoms, IQA) coupled to a chemical-interpretation calculator (Relative Energy Gradient, REG). We focus on the rate-limiting addition step in order to unravel the different events taking place in this step, and understand the influence of solvent on the reaction, with an eye on predicting the Mayr electrophilicity. For the first time, a link is established between an REG-IQA analysis and experimental values.
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Affiliation(s)
- Aël Cador
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821, Mont St, Aignan Cedex, France
| | - Vincent Tognetti
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821, Mont St, Aignan Cedex, France
| | - Laurent Joubert
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821, Mont St, Aignan Cedex, France
| | - Paul L A Popelier
- Department of Chemistry, The University of Manchester, Manchester, M13 9PL, Great Britain
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Allwood BW, Joubert L, Janson J. Chronic thromboembolic pulmonary hypertension: More options, more awareness. Afr J Thorac Crit Care Med 2023; 29:10.7196/AJTCCM.2023.v29i3.1496. [PMID: 37970577 PMCID: PMC10642392 DOI: 10.7196/ajtccm.2023.v29i3.1496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023] Open
Affiliation(s)
- B W Allwood
- Division of Pulmonology, Department of Medicine, Faculty of Medicine and Health
Sciences, Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
| | - L Joubert
- Division of Cardiology, Department of Medicine, Faculty of Medicine and
Health Sciences, Stellenbosch University and Tygerberg Hospital, Cape Town,
South Africa
| | - J Janson
- Division of Cardiothoracic Surgery, Department of Surgical Sciences, Faculty of
Medicine and Health Sciences, Stellenbosch University and Tygerberg Hospital,
Cape Town, South Africa
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Cilliers JCD, Joubert L, Beyers B, Ngarande E, Herbst P, Doubell A, Pecoraro A. The incidence and outcomes of high-risk acute coronary syndromes in Western Cape Province, South Africa: A prospective cohort study. S Afr Med J 2023; 113:25-29. [PMID: 37170600 DOI: 10.7196/samj.2023.v113i5.16764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Indexed: 05/13/2023] Open
Abstract
BACKGROUND Tygerberg Hospital (TBH) is a tertiary-level hospital in Western Cape Province, South Africa, that provides healthcare to a large low- to middle-income population with services including centralised advanced cardiac care. Acute coronary syndrome (ACS) remains an important cause of death in the region despite a high burden of communicable diseases, including HIV. OBJECTIVES To describe the incidence of ST-elevation myocardial infarction (STEMI) and high-risk non-ST-elevation ACS (HR-NSTEACS) in the TBH referral network, describe the in-hospital and 30-day mortality of these patients, and identify important high-risk population characteristics. METHODS The Tygerberg Acute Coronary Syndrome Registry database is an ongoing prospective study that enrols all STEMI and HR-NSTEACS patients in the TBH referral network. All patients aged >18 years presenting with STEMI or HR-NSTEACS were treated in accordance with current European Society of Cardiology guidelines and were included prospectively over a 9-month surveillance period. A waiver of consent was granted to include patients who died before giving informed consent. Data collected included a demographic profile, risk factors for cardiovascular disease, in-hospital therapy and 30-day mortality. RESULTS A total of 586 patients were enrolled, with a male predominance (64.5%) and incidence rates of STEMI and HR-NSTEACS of 14.7 per 100 000 and 15.6 per 100 000, respectively. The mean patient age was 58 years, and STEMI patients tended to be younger than HR-NSTEACS patients (56 v. 58 years; p=0.01). Cardiovascular risk factors were prevalent overall, but hypertension (79.8% v. 68.3%; p<0.01) and pre-existing IHD (29.1% v. 7.0%; p=0.03) were more prevalent in the HR-NSTEACS group. HIV was present in 12.6% of patients tested, similar to the background population rate. The overall 30-day all-cause mortality rate was 6.1%, with an in-hospital mortality rate of 3.9%. The 30-day mortality rates were similar for STEMI (1.8%) and HR-NSTEACS (2.6%) (p=0.75). HIV did not affect mortality rates. CONCLUSION Use of a guideline-based approach to treating ACS in a low- to middle-income country setting yields mortality rates comparable to those in high-income countries. However, the lower-than-expected incidence rates of both STEMI and HR-NSTEACS in a relatively young population with a high prevalence of traditional cardiovascular risk factors, and a relatively high proportion of STEMI, suggest potential under-recording of ischaemic heart disease in the region. The rate and outcomes of coronary artery disease (CAD) in people living with HIV were similar to those in people without HIV, suggesting that traditional risk factors still drive CAD outcomes in the region.
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Affiliation(s)
- J C D Cilliers
- Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, and Tygerberg Hospital, Cape Town, South Africa.
| | - L Joubert
- Division of Cardiology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, and Tygerberg Hospital, Cape Town, South Africa.
| | - B Beyers
- Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, and Tygerberg Hospital, Cape Town, South Africa.
| | - E Ngarande
- Division of Cardiology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, and Tygerberg Hospital, Cape Town, South Africa.
| | - P Herbst
- Division of Cardiology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, and Tygerberg Hospital, Cape Town, South Africa.
| | - A Doubell
- Division of Cardiology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, and Tygerberg Hospital, Cape Town, South Africa.
| | - A Pecoraro
- Division of Cardiology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, and Tygerberg Hospital, Cape Town, South Africa.
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Cador A, Hoffmann G, Tognetti V, Joubert L. A theoretical study on aza-Michael additions. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02921-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lossouarn A, Puteaux C, Bailly L, Tognetti V, Joubert L, Renard P, Sabot C. Metalloenzyme‐Mediated Thiol‐Yne Addition Towards Photoisomerizable Fluorescent Dyes. Chemistry 2022; 28:e202202180. [DOI: 10.1002/chem.202202180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Alexis Lossouarn
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) Rouen 76000 France
| | - Chloé Puteaux
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) Rouen 76000 France
| | - Laetitia Bailly
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) Rouen 76000 France
| | - Vincent Tognetti
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) Rouen 76000 France
| | - Laurent Joubert
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) Rouen 76000 France
| | - Pierre‐Yves Renard
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) Rouen 76000 France
| | - Cyrille Sabot
- Normandie Univ, CNRS, UNIROUEN, INSA Rouen, COBRA (UMR 6014) Rouen 76000 France
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Pecoraro AJK, Herbst P, Joubert L, Hassen K, Pienaar C, Taljaard J, Prozesky H, Janson J, Doubell A. Echocardiographic features of infective endocarditis in South Africa: A prospective cohort study. S Afr Med J 2022; 112:321-327. [PMID: 35587244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 04/30/2022] [Indexed: 06/15/2023] Open
Abstract
BACKGROUND Historically, infective endocarditis (IE) in South Africa (SA) was associated with the viridans group of streptococci affecting patients with underlying rheumatic heart disease (RHD). A changing IE bacteriological profile raises the question of whether the profile of underlying valvular abnormality has changed. OBJECTIVES To investigate the prevalence of underlying structural valve abnormalities and their aetiologies associated with IE in SA, and describe the typical imaging findings. METHODS The Tygerberg Endocarditis Cohort study prospectively enrolled patients with IE between November 2019 and April 2021. Patients underwent detailed transthoracic and transoesophageal echocardiography to assess their underlying cardiac and valvular structure. RESULTS Among 71 patients included, a predisposing endocardial abnormality was detected in 49.3%, with RHD the most common single identifiable aetiology (16.9%). The in-hospital mortality rate was similar in patients with and without a predisposing endocardial abnormality (20% v. 16.7%; p=0.72), as was the rate of embolic events (20% v. 27.2%; p=0.58). Significantly more patients with a predisposing endocardial abnormality had an indication for surgery (94.3% v. 69.4%; p<0.01). The viridans group of streptococci was more prevalent in patients with a predisposing endocardial abnormality (25.7% v. 2.7%; p<0.01). Left-sided linear vegetation size >10 mm was associated with an increased risk of in-hospital mortality (24% v. 5%; p=0.05). CONCLUSION We observed a marked decrease in the prevalence of RHD in this cohort of patients with IE. The viridans group of streptococci was an uncommon cause of IE in patients with no predisposing endocardial abnormality detected. The presence of a predisposing endocardial abnormality was not associated with an increased risk of in-hospital mortality or embolic events. Linear vegetation length >10 mm was associated with an increased risk of in-hospital mortality in patients with left-sided IE.
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Affiliation(s)
- A J K Pecoraro
- Division of Cardiology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa.
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Brémond É, Tognetti V, Chermette H, Sancho-García JC, Joubert L, Adamo C. Electronic Energy and Local Property Errors at QTAIM Critical Points while Climbing Perdew's Ladder of Density-Functional Approximations. J Chem Theory Comput 2021; 18:293-308. [PMID: 34958205 DOI: 10.1021/acs.jctc.1c00981] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigate the relationships between electron-density and electronic-energy errors produced by modern exchange-correlation density-functional approximations belonging to all of the rungs of Perdew's ladder. To this aim, a panel of relevant (semi)local properties evaluated at critical points of the electron-density field (as defined within the framework of Bader's atoms-in-molecules theory) are computed on a large selection of molecular systems involved in thermodynamic, kinetic, and noncovalent interaction chemical databases using density functionals developed in a nonempirical and minimally and highly parametrized fashion. The comparison of their density- and energy-based performance, also discussed in terms of density-driven errors, casts light on the strengths and weaknesses of the most recent and efficient density-functional approximations.
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Affiliation(s)
- Éric Brémond
- Université de Paris, ITODYS, CNRS, F-75006 Paris, France
| | - Vincent Tognetti
- Normandy University, COBRA UMR 6014 and FR 3038, Université de Rouen INSA Rouen, CNRS, F-76821 Mont St Aignan, France
| | - Henry Chermette
- Université de Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, Université Lyon 1, 5 rue de la Doua, F-69100 Villeurbanne, France
| | | | - Laurent Joubert
- Normandy University, COBRA UMR 6014 and FR 3038, Université de Rouen INSA Rouen, CNRS, F-76821 Mont St Aignan, France
| | - Carlo Adamo
- Chimie ParisTech, PSL Research University, CNRS, Institute of Chemistry for Life and Health Sciences (i-CLeHS), UMR 8060, F-75005 Paris, France.,Institut Universitaire de France, 103 Boulevard Saint Michel, F-75005 Paris, France
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Mignet F, Barnagaud JY, Barthe L, Bertolero A, Bosc V, Escot F, Fleuriau R, Joubert L, Joyeux A, Lerat D, Massez G, Olivier A, Owen-Jones Z, Perrot K, Petit J, Poitevin F, Poulet L, Priol P, Rivière V, Roy C, Scher O, Schwartz T, Thienpont S, Thirion JM, Vollot B, Cheylan M. Geographic variation in body size among French populations of the European pond turtle. AMPHIBIA-REPTILIA 2020. [DOI: 10.1163/15685381-bja10036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Abstract
The processes underlying macroecological gradients in body size are widely debated, in part because their intraspecific variability remains poorly described even in well-studied taxa such as vertebrates. In this study, we investigated how climate, habitat, genetic lineage and sex explain body size variations in French populations of the European pond turtle (Emys orbicularis). We measured 7016 adult individuals captured in 41 populations, covering most of the species’ distribution in metropolitan France, including Corsica. Body size variation in our sample was wide and comparable to that found across the species’ worldwide range. Variation was similar in magnitude at regional and local levels, suggesting that body size is influenced by local factors as much as by regional factors such as climate or genetic lineage. Smaller sizes were associated with Mediterranean or altered oceanic climates, and with two lineages (E. o. galloitalica and E. o. galloitalica/E. o. orbicularis), while larger sizes were associated with northern environments and the orbicularis lineage. Body size variations recorded at local level reflect an adaptive response to environmental constraints, suggesting that habitat is also an important factor in understanding size variation.
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Affiliation(s)
- Fabien Mignet
- Naturalia-Environnement, Site Agroparc, 20 rue Lawrence Durrell, BP 31285, 84911 Avignon Cedex 9, France
| | - Jean-Yves Barnagaud
- Centre d’Écologie Fonctionnelle et Évolutive – UMR 5175 CEFE, PSL Research University, University of Montpellier, CNRS, EPHE, SupAgro, IND, INRA, 1919 route de Mende, Montpellier, France
| | - Laurent Barthe
- Nature En Occitanie, 14 rue de Tivoli, 31000 Toulouse, France
- Société Herpétologique de France, MNHN – CP41 57, rue Cuvier 75005 Paris, France
| | - Albert Bertolero
- Associació Ornitològica Picampall de les Terres de l’Ebre, Amposta, Catalonia, Spain
| | - Valérie Bosc
- Conservatoire d’espaces naturels de Corse, Maison Andreani, 871 avenue de Borgo, 20290 Borgo, France
| | - Florine Escot
- Syndicat mixte pour la protection et la gestion de la Camargue Gardoise, route des iscles, Gallician, 30600 Vauvert, France
| | - Romain Fleuriau
- Conservatoire d’espaces naturels de Corse, Maison Andreani, 871 avenue de Borgo, 20290 Borgo, France
| | - Laurent Joubert
- Société pour l’Etude, la Protection et l’Aménagement de la Nature en Lot-et-Garonne, RNN de l’étang de la Mazière, 47400 Villeton, France
| | - André Joyeux
- Centre d’Écologie Fonctionnelle et Évolutive – UMR 5175 CEFE, PSL Research University, University of Montpellier, CNRS, EPHE, SupAgro, IND, INRA, 1919 route de Mende, Montpellier, France
| | - Damien Lerat
- Société d’Histoire Naturelle d’Autun, Maison du Parc naturel regional du Morvan, 58230 Saint-Brisson, France
| | - Grégoire Massez
- Les Marais du Vigueirat – Chemin de l’Etourneau, 13104 Mas-Thibert, France
| | - Anthony Olivier
- Tour du Valat, Research Institute for the conservation of Mediterranean Wetlands, Le Sambuc, 13200 Arles, France
| | - Zoey Owen-Jones
- Réserve Naturelle de Chérine, Maison de la nature, 36290 Saint Michel en Brenne, France
| | | | - Jérémiah Petit
- Syndicat mixte de Camargue gardoise, Centre de Scamandre, route des Iscles, 30600 Vauvert, France
| | - Françoise Poitevin
- Centre d’Écologie Fonctionnelle et Évolutive – UMR 5175 CEFE, PSL Research University, University of Montpellier, CNRS, EPHE, SupAgro, IND, INRA, 1919 route de Mende, Montpellier, France
| | - Laetitia Poulet
- Parc naturel régional de Camargue, Mas du Pont de Rousty, 13200 Arles, France
| | | | - Vincent Rivière
- Agir Ecologique, 147 ancienne Route d’Esparron, 83470 Saint-Maximin-la-Sainte-Baume, France
| | - Cédric Roy
- Conservatoire d’espaces naturels Provence-Alpes-Côte d’Azur - appart n°5, 95 rue Droite, 04200 Sisteron, France
| | - Olivier Scher
- Conservatoire d’espaces naturels du Languedoc-Roussillon, Immeuble “le Thèbes”, 26 allées de Mycènes, 34000 Montpellier, France
| | - Timothée Schwartz
- Centre d’Écologie Fonctionnelle et Évolutive – UMR 5175 CEFE, PSL Research University, University of Montpellier, CNRS, EPHE, SupAgro, IND, INRA, 1919 route de Mende, Montpellier, France
- Tour du Valat, Research Institute for the conservation of Mediterranean Wetlands, Le Sambuc, 13200 Arles, France
- A Rocha France, Domaine des Courmettes, Route de Courmettes, 06140 Tourrettes sur Loup, France
| | - Stéphanie Thienpont
- Société Herpétologique de France, MNHN – CP41 57, rue Cuvier 75005 Paris, France
| | - Jean-Marc Thirion
- OBIOS – Objectifs Biodiversités, 22 rue du Docteur Gilbert, 17250 Pont-l’Abbé-d’Arnoult, France
| | - Benjamin Vollot
- Les Amis du Parc Ornithologique de Pont de Gau, RD 570, 13460 Saintes-Maries-de-la-Mer, France
| | - Marc Cheylan
- Centre d’Écologie Fonctionnelle et Évolutive – UMR 5175 CEFE, PSL Research University, University of Montpellier, CNRS, EPHE, SupAgro, IND, INRA, 1919 route de Mende, Montpellier, France
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Hoffmann G, Balcilar M, Tognetti V, Héroux P, Gaüzère B, Adam S, Joubert L. Predicting experimental electrophilicities from quantum and topological descriptors: A machine learning approach. J Comput Chem 2020. [DOI: 10.1002/jcc.26376] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Guillaume Hoffmann
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS Mont St Aignan France
| | | | - Vincent Tognetti
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS Mont St Aignan France
| | - Pierre Héroux
- Normandie Univ., UNIROUEN, UNIHAVRE, INSA Rouen, LITIS Rouen France
| | - Benoît Gaüzère
- Normandie Univ., UNIROUEN, UNIHAVRE, INSA Rouen, LITIS Rouen France
| | - Sébastien Adam
- Normandie Univ., UNIROUEN, UNIHAVRE, INSA Rouen, LITIS Rouen France
| | - Laurent Joubert
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS Mont St Aignan France
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Hoffmann G, Tognetti V, Joubert L. Electrophilicity Indices and Halogen Bonds: Some New Alternatives to the Molecular Electrostatic Potential. J Phys Chem A 2020; 124:2090-2101. [DOI: 10.1021/acs.jpca.9b10233] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guillaume Hoffmann
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan. Cedex, France
| | - Vincent Tognetti
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan. Cedex, France
| | - Laurent Joubert
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan. Cedex, France
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Guégan F, Pigeon T, De Proft F, Tognetti V, Joubert L, Chermette H, Ayers PW, Luneau D, Morell C. Understanding Chemical Selectivity through Well Selected Excited States. J Phys Chem A 2020; 124:633-641. [PMID: 31880457 DOI: 10.1021/acs.jpca.9b09978] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this publication, we propose a new set of reactivity/selectivity descriptors, derived within a Rayleigh-Schrödinger perturbation theory framework, for chemical systems undergoing an electrostatic (point-charge) perturbation. From the electron density polarization at first order, qualitative insight on reactivity is retrieved, while more quantitative information (noteworthy selectivity) can be obtained from either the second-order energy response or the number of shifted electrons under perturbation. Noteworthily, only a small number of excitations contribute significantly to the overall responses to perturbation, suggesting chemical reactivity could be foreseen by a careful scrutiny of the electron density reorganization upon excitation.
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Affiliation(s)
- F Guégan
- IC2MP UMR 7285 , Université de Poitiers - CNRS, 4, rue Michel Brunet TSA, 51106-86073 Cedex 9, Poitiers , France
| | - T Pigeon
- Université de Lyon , Institut des Sciences Analytiques , UMR 5280, CNRS, Université Lyon 1, ENS Lyon-5, rue de la Doua, F-69100 Villeurbanne , France
| | - F De Proft
- Eenheid Algemene Chemie (ALGC) , Vrije Universiteit Brussel (VUB) , Pleinlaan 2, 1050 Brussels , Belgium
| | - V Tognetti
- Normandy Univ., COBRA UMR 6014 - FR 3038 , Université de Rouen , INSA Rouen, CNRS, 1 rue Tesniére, 76821 Mont St Aignan , Cedex, France
| | - L Joubert
- Normandy Univ., COBRA UMR 6014 - FR 3038 , Université de Rouen , INSA Rouen, CNRS, 1 rue Tesniére, 76821 Mont St Aignan , Cedex, France
| | - H Chermette
- Université de Lyon , Institut des Sciences Analytiques , UMR 5280, CNRS, Université Lyon 1, ENS Lyon-5, rue de la Doua, F-69100 Villeurbanne , France
| | - P W Ayers
- Department of Chemistry & Chemical Biology , McMaster University , Hamilton , Ontario , Canada L8S4M1
| | - D Luneau
- Université de Lyon , Laboratoire des Multimatériaux et Interfaces (UMR 5615 CNRS, Université Lyon 1), 69622 Villeurbanne , France
| | - C Morell
- Université de Lyon , Institut des Sciences Analytiques , UMR 5280, CNRS, Université Lyon 1, ENS Lyon-5, rue de la Doua, F-69100 Villeurbanne , France
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Migliore M, Bonvicini A, Tognetti V, Guilhaudis L, Baaden M, Oulyadi H, Joubert L, Ségalas-Milazzo I. Characterization of β-turns by electronic circular dichroism spectroscopy: a coupled molecular dynamics and time-dependent density functional theory computational study. Phys Chem Chem Phys 2020; 22:1611-1623. [PMID: 31894790 DOI: 10.1039/c9cp05776e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Electronic circular dichroism is one of the most used spectroscopic techniques for peptide and protein structural characterization. However, while valuable experimental spectra exist for α-helix, β-sheet and random coil secondary structures, previous studies showed important discrepancies for β-turns, limiting their use as a reference for structural studies. In this paper, we simulated circular dichroism spectra for the best-characterized β-turns in peptides, namely types I, II, I' and II'. In particular, by combining classical molecular dynamics simulations and state-of-the-art quantum time-dependent density functional theory (with the polarizable embedding multiscale model) computations, two common electronic circular dichroism patterns were found for couples of β-turn types (namely, type I/type II' and type II/type I'), at first for a minimal di-peptide model (Ace-Ala-Ala-NHMe), but also for all sequences tested with non-aromatic residues in the central positions. On the other hand, as expected, aromatic substitution causes important perturbations to the previously found ECD patterns. Finally, by applying suitable approximations, these patterns were subsequently rationalized based on the exciton chirality rule. All these results provide useful predictions and pave the way for a possible experimental characterization of β-turns based on circular dichroism spectroscopy.
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Affiliation(s)
- Mattia Migliore
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont St Aignan, Cedex, France.
| | - Andrea Bonvicini
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont St Aignan, Cedex, France.
| | - Vincent Tognetti
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont St Aignan, Cedex, France.
| | - Laure Guilhaudis
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont St Aignan, Cedex, France.
| | - Marc Baaden
- Laboratoire de Biochimie Théorique, CNRS, UPR9080, Univ. Paris Diderot, Sorbonne Paris Cité, PSL Research University, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Hassan Oulyadi
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont St Aignan, Cedex, France.
| | - Laurent Joubert
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont St Aignan, Cedex, France.
| | - Isabelle Ségalas-Milazzo
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, 76821 Mont St Aignan, Cedex, France.
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14
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Doubell J, Kyriakakis C, Weich H, Herbst P, Pecoraro A, Moses J, Griffiths B, Snyman HW, Kabwe L, Du Toit R, Joubert L, Hassan K, Doubell A. P6518Radial artery dilatation to improve access and lower complication rates during coronary angiography (RADIAL): a randomized controlled trial. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Transradial catheterization has become the preferred access site for coronary angiography. The transradial approach is however not without challenges and complications. Cannulation is technically challenging and may require multiple cannulation attempts or access may fail. Local access site complications may occur postprocedurally.
Purpose
To explore the use of prolonged occlusion flow mediated dilatation (PO-FMD) to dilate the radial artery prior to cannulation to reduce puncture attempts, increase cannulation success and reduce access site complications in transradial coronary angiography.
Methods
1156 patients undergoing transradial coronary angiography were randomized into PO-FMD and sham PO-FMD groups. PO-FMD was achieved by a 10 minute inflation of a blood pressure cuff on the arm to above systolic pressure, followed by deflation with resultant radial artery dilation. In the sham PO-FMD group the cuff was not inflated. The operators were blinded to the intervention.
Results
580 patients were randomized to the sham PO-FMD group and 576 to the PO-FMD group. The number of puncture attempts were reduced with the use of PO-FMD, with a median number of attempts of 1 in the PO-FMD group and 2 in the sham PO-FMD group (p<0.001). Cannulation failure was reduced with PO-FMD FMD with cannulation failure rates of 2.7% in the PO-FMD group and 5.8% in the sham PO-FMD group (p=0.01). Radial artery pulsation loss (RAPL) was reduced with PO-FMD with 1.4% in the PO-FMD group and 3.8% in the sham PO-FMD group (p=0.02).
Conclusion
PO-FMD decreases puncture attempts, reduces cannulation failure rates and decreases RAPL during transradial coronary angiography.
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Affiliation(s)
- J Doubell
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - C Kyriakakis
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - H Weich
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - P Herbst
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - A Pecoraro
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - J Moses
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - B Griffiths
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - H W Snyman
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - L Kabwe
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - R Du Toit
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - L Joubert
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - K Hassan
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - A Doubell
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
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15
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Andrés J, Ayers PW, Boto RA, Carbó-Dorca R, Chermette H, Cioslowski J, Contreras-García J, Cooper DL, Frenking G, Gatti C, Heidar-Zadeh F, Joubert L, Martín Pendás Á, Matito E, Mayer I, Misquitta AJ, Mo Y, Pilmé J, Popelier PLA, Rahm M, Ramos-Cordoba E, Salvador P, Schwarz WHE, Shahbazian S, Silvi B, Solà M, Szalewicz K, Tognetti V, Weinhold F, Zins ÉL. Nine questions on energy decomposition analysis. J Comput Chem 2019; 40:2248-2283. [PMID: 31251411 DOI: 10.1002/jcc.26003] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 05/16/2019] [Indexed: 01/05/2023]
Abstract
The paper collects the answers of the authors to the following questions: Is the lack of precision in the definition of many chemical concepts one of the reasons for the coexistence of many partition schemes? Does the adoption of a given partition scheme imply a set of more precise definitions of the underlying chemical concepts? How can one use the results of a partition scheme to improve the clarity of definitions of concepts? Are partition schemes subject to scientific Darwinism? If so, what is the influence of a community's sociological pressure in the "natural selection" process? To what extent does/can/should investigated systems influence the choice of a particular partition scheme? Do we need more focused chemical validation of Energy Decomposition Analysis (EDA) methodology and descriptors/terms in general? Is there any interest in developing common benchmarks and test sets for cross-validation of methods? Is it possible to contemplate a unified partition scheme (let us call it the "standard model" of partitioning), that is proper for all applications in chemistry, in the foreseeable future or even in principle? In the end, science is about experiments and the real world. Can one, therefore, use any experiment or experimental data be used to favor one partition scheme over another? © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Juan Andrés
- Departament de Ciències Experimentals Universitat Jaume I, 12080, Castelló, Spain
| | - Paul W Ayers
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, L8S 4M1, Hamilton, Ontario, Canada
| | | | - Ramon Carbó-Dorca
- Institut de Química Computational i Catàlisi, Universitat de Girona, C/M Aurelia Capmany 69, 17003, Girona, Spain
| | - Henry Chermette
- Université Lyon 1 et UMR CNRS 5280 Institut Sciences Analytiques, Université de Lyon, 69622, Paris, France
| | - Jerzy Cioslowski
- Institute of Physics, University of Szczecin, Wielkopolska, 15, 70-451, Szczecin, Poland
| | | | - David L Cooper
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - Gernot Frenking
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerweinstr. 4, 35032, Marburg, Germany
| | - Carlo Gatti
- CNR-ISTM Istituto di Scienze e Tecnologie Molecolari, via Golgi 19, 20133, Milan, Italy and Istituto Lombardo Accademia di Scienze e Lettere, via Brera 28, 20121, Milan, Italy
| | - Farnaz Heidar-Zadeh
- Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg, Luxembourg and Department of Chemistry, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Laurent Joubert
- COBRA UMR 6014 & FR 3038, INSA Rouen, CNRS, Université de Rouen Normandie, Mont-St-Aignan, France
| | - Ángel Martín Pendás
- Departamento de Química Física y Analítica, Universidad de Oviedo, 33006, Oviedo, Spain
| | - Eduard Matito
- Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), and Donostia International Physics Center (DIPC), P.K. 1072, 20080, Donostia, Euskadi, Spain.,IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Euskadi, Spain
| | - István Mayer
- Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, 1117, Hungary
| | - Alston J Misquitta
- School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Yirong Mo
- Chemistry Department, Western Michigan University, Kalamazoo, Michigan, 49008
| | - Julien Pilmé
- Sorbonne Université, CNRS, LCT, UMR 7616, 4 place Jussieu, 75005, Paris, France
| | - Paul L A Popelier
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester, M1 7DN, United Kingdom.,School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom
| | - Martin Rahm
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96, Gothenburg, Sweden
| | - Eloy Ramos-Cordoba
- Kimika Fakultatea, Euskal Herriko Unibertsitatea (UPV/EHU), and Donostia International Physics Center (DIPC), P.K. 1072, 20080, Donostia, Euskadi, Spain
| | - Pedro Salvador
- Institut de Química Computacional i Catàlisi, Universitat de Girona, C/M Aurelia Capmany 69, 17003, Girona, Spain
| | - W H Eugen Schwarz
- Theoretical Chemistry Center at Tsinghua University, Beijing, 100084, China.,Physical and Theoretical Chemistry Laboratory, Faculty of Science and Engineering, University of Siegen, Siegen, 57068, Germany
| | - Shant Shahbazian
- Department of Physics, Shahid Beheshti University, P.O. Box 19395-4716, G. C., Evin, 19839, Tehran, Iran
| | - Bernard Silvi
- Sorbonne Université, CNRS, LCT, UMR 7616, 4 place Jussieu, 75005, Paris, France
| | - Miquel Solà
- Institut de Química Computacional i Catàlisi, Universitat de Girona, C/M Aurelia Capmany 69, 17003, Girona, Spain
| | - Krzysztof Szalewicz
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware
| | - Vincent Tognetti
- COBRA UMR 6014 & FR 3038, INSA Rouen, CNRS, Université de Rouen Normandie, Mont-St-Aignan, France
| | - Frank Weinhold
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706
| | - Émilie-Laure Zins
- Sorbonne Université, UPMC Univ. Paris 06, MONARIS, UMR 8233, Université Pierre et Marie Curie, 4 Place Jussieu, Case Courrier 49, 75252, Paris, France
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16
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Pons A, Tognetti V, Joubert L, Poisson T, Pannecoucke X, Charette AB, Jubault P. Catalytic Enantioselective Cyclopropanation of α-Fluoroacrylates: An Experimental and Theoretical Study. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00354] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Amandine Pons
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Vincent Tognetti
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Laurent Joubert
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Thomas Poisson
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
- Institut Universitaire de France, 1 rue Descartes, 75231 Paris, France
| | - Xavier Pannecoucke
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - André B. Charette
- Centre in Green Chemistry and Catalysis, Faculty of Arts and Sciences, Department of Chemistry, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal, Québec, Canada H3C 3J7
| | - Philippe Jubault
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
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17
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Bonvicini A, Reinholdt P, Tognetti V, Joubert L, Wüstner D, Kongsted J. Rational design of novel fluorescent analogues of cholesterol: a “step-by-step” computational study. Phys Chem Chem Phys 2019; 21:15487-15503. [DOI: 10.1039/c9cp01902b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
State-of-the-art quantum chemical and molecular dynamics simulations are used as guidelines in design of novel fluorescent analogues of cholesterol.
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Affiliation(s)
- Andrea Bonvicini
- Normandy Univ. COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- CNRS
- 76821 Mont Saint Aignan
| | - Peter Reinholdt
- Department of Physics, Chemistry and Pharmacy
- University of Southern Denmark
- Odense M
- Denmark
| | - Vincent Tognetti
- Normandy Univ. COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- CNRS
- 76821 Mont Saint Aignan
| | - Laurent Joubert
- Normandy Univ. COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- CNRS
- 76821 Mont Saint Aignan
| | - Daniel Wüstner
- Department of Biochemistry and Molecular Biology
- University of Southern Denmark
- DK-5230 Odense
- Denmark
| | - Jacob Kongsted
- Department of Physics, Chemistry and Pharmacy
- University of Southern Denmark
- Odense M
- Denmark
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18
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Hoffmann G, Tognetti V, Joubert L. Can molecular and atomic descriptors predict the electrophilicity of Michael acceptors? J Mol Model 2018; 24:281. [DOI: 10.1007/s00894-018-3802-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 08/16/2018] [Indexed: 12/21/2022]
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19
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Tognetti V, Silva AF, Vincent MA, Joubert L, Popelier PLA. Decomposition of Møller–Plesset Energies within the Quantum Theory of Atoms-in-Molecules. J Phys Chem A 2018; 122:7748-7756. [DOI: 10.1021/acs.jpca.8b05357] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Vincent Tognetti
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére, 76821 Mont St Aignan, Cedex, France
| | - Arnaldo F. Silva
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, Great Britain
| | - Mark A. Vincent
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, Great Britain
| | - Laurent Joubert
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére, 76821 Mont St Aignan, Cedex, France
| | - Paul L. A. Popelier
- Manchester Institute of Biotechnology (MIB), 131 Princess Street, Manchester M1 7DN, Great Britain
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, Great Britain
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20
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Doubell J, Kyriakakis C, Weich H, Herbst P, Pecoraro A, Griffiths B, Snyman HW, Moses J, Kabwe L, Du Toit R, Joubert L, Hassan K, Doubell A. P5519Radial artery dilatation to improve access and lower complication rates during coronary angiography (RADIAL): a randomized controlled trial. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Doubell
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - C Kyriakakis
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - H Weich
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - P Herbst
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - A Pecoraro
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - B Griffiths
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - H W Snyman
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - J Moses
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - L Kabwe
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - R Du Toit
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - L Joubert
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - K Hassan
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
| | - A Doubell
- University of Stellenbosch, Division of Cardiology, Department of Medicine, Cape Town, South Africa
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21
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Lespes N, Pair E, Maganga C, Bretier M, Tognetti V, Joubert L, Levacher V, Hubert-Roux M, Afonso C, Loutelier-Bourhis C, Brière JF. A Unique (3+2) Annulation Reaction between Meldrum's Acid and Nitrones: Mechanistic Insight by ESI-IMS-MS and DFT Studies. Chemistry 2018; 24:4086-4093. [PMID: 29297600 DOI: 10.1002/chem.201705714] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Indexed: 11/10/2022]
Abstract
The fragile intermediates of the domino process leading to an isoxazolidin-5-one, triggered by unique reactivity between Meldrum's acid and an N-benzyl nitrone in the presence of a Brønsted base, were determined thanks to the softness and accuracy of electrospray ionization mass spectrometry coupled to ion mobility spectrometry (ESI-IMS-MS). The combined DFT study shed light on the overall organocatalytic sequence that starts with a stepwise (3+2) annulation reaction that is followed by a decarboxylative protonation sequence encompassing a stereoselective pathway issue.
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Affiliation(s)
- Nicolas Lespes
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Etienne Pair
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Clisy Maganga
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Marie Bretier
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Vincent Tognetti
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Laurent Joubert
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Vincent Levacher
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Marie Hubert-Roux
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
| | - Carlos Afonso
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000, Rouen, France
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22
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Bonvicini A, Guilhaudis L, Tognetti V, Desmaële D, Sauvonnet N, Oulyadi H, Joubert L. Revisiting absorption and electronic circular dichroism spectra of cholesterol in solution: a joint experimental and theoretical study. Phys Chem Chem Phys 2018; 20:5274-5284. [PMID: 29405212 DOI: 10.1039/c7cp07713k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cholesterol is doubtless one of the most studied bio-molecules, which unfortunately features low emitting properties, precluding its in vivo study by fluorescence experiments. The design of fluorescent analogues of cholesterol is thus an appealing challenge in biochemistry, which simultaneously requires minor changes in its chemical structure (to retain main biological properties) and considerable enhancement of light emission. To this aim, the photochemical behaviour of the native molecule has to be deeply understood. In this work, we focused our attention on the electronic absorption of cholesterol in several common organic solutions, combining experimental (through ultraviolet-visible and electronic circular dichroism spectroscopy) and theoretical approaches (at the time-dependent density functional theory level) in order to solve the important discrepancies previously reported in the literature on the maximum absorption wavelengths and on the nature (Rydberg and/or π → π*) of the associated electronic transition.
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Affiliation(s)
- Andrea Bonvicini
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France.
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23
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Goret P, Joubert L. Sur une nouvelle espèce de streptomyces (streptomyces galtieri n. sp.), isolée d’un cas d’actinomycose septicémique chez le chien. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/parasite/1951261118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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24
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Lomas JS, Joubert L. On the importance of intramolecular hydrogen bond cooperativity in d-glucose - an NMR and QTAIM approach. Magn Reson Chem 2017; 55:893-901. [PMID: 28432857 DOI: 10.1002/mrc.4599] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/15/2017] [Accepted: 04/18/2017] [Indexed: 05/16/2023]
Abstract
The idea that hydrogen bond cooperativity is responsible for the structure and reactivity of carbohydrates is examined. Density functional theory and gauge-including atomic orbital calculations on the known conformers of the α and β anomers of d-glucopyranose in the gas phase are used to compute proton NMR chemical shifts and interatomic distances, which are taken as criteria for probing intramolecular interactions. Atom-atom interaction energies are calculated by the interacting quantum atoms approach in the framework of the quantum theory of atoms in molecules. Association of OH1 in the counterclockwise conformers with a strong acceptor, pyridine, is accompanied by cooperative participation from OH2, but there is no significant change in the bonding of the two following 1,2-diol motifs. The OH6... O5 (G-g+/cc/t and G+g-/cc/t conformers) or OH6... O4 (Tg+/cc/t conformer) distance is reduced, and the OH6 proton is slightly deshielded. In the latter case, this shortening and the associated increase in the OH6-O4 interaction energy may be interpreted as a small cooperative effect, but intermolecular interaction energies are practically the same for all three conformers. In most of the pyridine complexes, one ortho proton interacts with the endocyclic oxygen O5. Analogous results are obtained when the clockwise conformer, G-g+/cl/g-, detected for the α anomer, and a hypothetical conformer, Tt/cl/g-, are complexed with pyridine through OH6. Generally, the cooperative effect does not go beyond the first two OH groups of a chain. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- John S Lomas
- ITODYS (CNRS UMR-7086), Univ Paris Diderot, Sorbonne Paris Cité, F-75205, Paris, France
| | - Laurent Joubert
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesnière, F-76821, Mont St Aignan Cedex, France
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Mignot M, Schammé B, Tognetti V, Joubert L, Cardinael P, Peulon-Agasse V. Anthracenyl polar embedded stationary phases with enhanced aromatic selectivity. Part II: A density functional theory study. J Chromatogr A 2017; 1519:91-99. [DOI: 10.1016/j.chroma.2017.08.083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 08/28/2017] [Accepted: 08/30/2017] [Indexed: 12/28/2022]
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26
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Tognetti V, Joubert L. On Atoms‐in‐Molecules Energies from Kohn–Sham Calculations. Chemphyschem 2017; 18:2675-2687. [DOI: 10.1002/cphc.201700637] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/01/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Vincent Tognetti
- Normandy Univ. COBRA UMR 6014 & FR 3038Université de Rouen, INSA Rouen, CNRS 1 rue Tesniére 76821 Mont St Aignan, Cedex France
| | - Laurent Joubert
- Normandy Univ. COBRA UMR 6014 & FR 3038Université de Rouen, INSA Rouen, CNRS 1 rue Tesniére 76821 Mont St Aignan, Cedex France
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27
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Tognetti V, Guégan F, Luneau D, Chermette H, Morell C, Joubert L. Structural effects in octahedral carbonyl complexes: an atoms-in-molecules study. Theor Chem Acc 2017. [DOI: 10.1007/s00214-017-2116-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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28
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Zhao Q, Tognetti V, Joubert L, Besset T, Pannecoucke X, Bouillon JP, Poisson T. Palladium-Catalyzed Synthesis of 3-Trifluoromethyl-Substituted 1,3-Butadienes by Means of Directed C-H Bond Functionalization. Org Lett 2017; 19:2106-2109. [PMID: 28378584 DOI: 10.1021/acs.orglett.7b00704] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A palladium-catalyzed C-H bond functionalization of acrylamides was developed to build up stereoselectively trifluoromethylated 1,3-butadienes. Using a tertiary amide as a directing group, olefins were selectively functionalized with 2-bromo-3,3,3-trifluoropropene to access these important fluorinated compounds. The methodology was extended to the construction of pentafluoroethyl-substituted 1,3-dienes. Mechanistic studies supported by density functional theory calculations suggested a redox neutral mechanism for this transformation.
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Affiliation(s)
- Qun Zhao
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Vincent Tognetti
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Laurent Joubert
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Tatiana Besset
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Xavier Pannecoucke
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Jean-Philippe Bouillon
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
| | - Thomas Poisson
- Normandie Université, INSA Rouen , UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France
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29
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Tognetti V, Bouzbouz S, Joubert L. A theoretical study of the diastereoselective allylation of aldehydes with new chiral allylsilanes. J Mol Model 2016; 23:5. [DOI: 10.1007/s00894-016-3173-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 11/16/2016] [Indexed: 11/24/2022]
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30
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Lomas JS, Joubert L, Maurel F. Association of symmetrical alkane diols with pyridine: DFT/GIAO calculation of 1 H NMR chemical shifts. Magn Reson Chem 2016; 54:805-814. [PMID: 27247256 DOI: 10.1002/mrc.4457] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 05/04/2016] [Accepted: 05/05/2016] [Indexed: 06/05/2023]
Abstract
Proton nuclear magnetic resonance (NMR) shifts of the free diol and of its 1 : 1 and 1 : 2 hydrogen-bonded complexes with pyridine have been computed for five symmetrical alkane diols on the basis of density functional theory, by applying the gauge-including atomic orbital method to geometry-optimized conformers. For certain conformers, intramolecular OH···OH interactions, evidenced by high NMR OH proton shifts, are further enhanced on going from the free diol to the corresponding 1 : 1 diol/pyridine complex. This is confirmed by atoms-in-molecules and non-covalent interaction plots. The computed OH and CH proton shifts for the diol and the two complexes correlate well with values obtained by analysing data from the NMR titration of the diols in benzene against pyridine. Shift values for the diols in neat pyridine are calculated by weighting the shifts of the various protons in the three forms (free diol, 1 : 1 and 1 : 2 diol/pyridine complexes) according to the experimentally determined association constants. The results are in good agreement with those observed, and after empirical scaling, the root mean square difference is 0.18 ppm. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- John S Lomas
- ITODYS (UMR 7086), Univ Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Laurent Joubert
- Normandy Univ., COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, France
| | - François Maurel
- ITODYS (UMR 7086), Univ Paris Diderot, Sorbonne Paris Cité, Paris, France
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31
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Hodeau JL, Bouchard C, Douillet S, Fernandez F, Joubert L, Soldo Y, Zaccaro S. A cross-field perspective on symmetry and crystal to introduce crystallography. Acta Crystallogr A Found Adv 2016. [DOI: 10.1107/s2053273316097503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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32
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Schammé B, Mignot M, Couvrat N, Tognetti V, Joubert L, Dupray V, Delbreilh L, Dargent E, Coquerel G. Molecular Relaxations in Supercooled Liquid and Glassy States of Amorphous Quinidine: Dielectric Spectroscopy and Density Functional Theory Approaches. J Phys Chem B 2016; 120:7579-92. [PMID: 27391029 DOI: 10.1021/acs.jpcb.6b04242] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this article, we conduct a comprehensive molecular relaxation study of amorphous Quinidine above and below the glass-transition temperature (Tg) through broadband dielectric relaxation spectroscopy (BDS) experiments and theoretical density functional theory (DFT) calculations, as one major issue with the amorphous state of pharmaceuticals is life expectancy. These techniques enabled us to determine what kind of molecular motions are responsible, or not, for the devitrification of Quinidine. Parameters describing the complex molecular dynamics of amorphous Quinidine, such as Tg, the width of the α relaxation (βKWW), the temperature dependence of α-relaxation times (τα), the fragility index (m), and the apparent activation energy of secondary γ relaxation (Ea-γ), were characterized. Above Tg (> 60 °C), a medium degree of nonexponentiality (βKWW = 0.5) was evidenced. An intermediate value of the fragility index (m = 86) enabled us to consider Quinidine as a glass former of medium fragility. Below Tg (< 60 °C), one well-defined secondary γ relaxation, with an apparent activation energy of Ea-γ = 53.8 kJ/mol, was reported. From theoretical DFT calculations, we identified the most reactive part of Quinidine moieties through exploration of the potential energy surface. We evidenced that the clearly visible γ process has an intramolecular origin coming from the rotation of the CH(OH)C9H14N end group. An excess wing observed in amorphous Quinidine was found to be an unresolved Johari-Goldstein relaxation. These studies were supplemented by sub-Tg experimental evaluations of the life expectancy of amorphous Quinidine by X-ray powder diffraction and differential scanning calorimetry. We show that the difference between Tg and the onset temperature for crystallization, Tc, which is 30 K, is sufficiently large to avoid recrystallization of amorphous Quinidine during 16 months of storage under ambient conditions.
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Affiliation(s)
- Benjamin Schammé
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France.,AMME-LECAP EA 4528 International Lab, Avenue de l'Université, BP12, Normandie Univ, Université de Rouen Normandie , 76801 St Etienne du Rouvray, France
| | - Mélanie Mignot
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
| | - Nicolas Couvrat
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
| | - Vincent Tognetti
- COBRA UMR 6014 and FR 3038, Normandie Univ, Université de Rouen, INSA Rouen, CNRS , F-76821 Mont Saint Aignan, Cedex, France
| | - Laurent Joubert
- COBRA UMR 6014 and FR 3038, Normandie Univ, Université de Rouen, INSA Rouen, CNRS , F-76821 Mont Saint Aignan, Cedex, France
| | - Valérie Dupray
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
| | - Laurent Delbreilh
- AMME-LECAP EA 4528 International Lab, Avenue de l'Université, BP12, Normandie Univ, Université de Rouen Normandie , 76801 St Etienne du Rouvray, France
| | - Eric Dargent
- AMME-LECAP EA 4528 International Lab, Avenue de l'Université, BP12, Normandie Univ, Université de Rouen Normandie , 76801 St Etienne du Rouvray, France
| | - Gérard Coquerel
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
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Abstract
There is a dearth of publications on methods to evaluate pain due to intramuscular injections. This paper proposes a method to evaluate pain using an experimental design which allows ‘within’ and'between’ subjects comparisons of pain severity. This method was efficient in discriminating which of three formulations was preferable.
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Affiliation(s)
- L Joubert
- Sterling Drug Co, 90 Park Ave, New York, USA
| | - J P de Menezes
- Head, Medical Department, Laborterapica-Bristol, SA, São Paulo, Brazil
| | - C A Fernandez
- Department Clinical Research, Bristol-Myers Company, International Division, New York, USA
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34
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Aliyenne A, Pin F, Nimbarte VD, Lawson AM, Comesse S, Sanselme M, Tognetti V, Joubert L, Daïch A. Bi(OTf)3
-Catalysed Access to 2,3-Substituted Isoindolinones and Tricyclic N,O-Acetals by Trapping of Bis-N
-Acyliminium Species in a Tandem Process. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600530] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ahmed Aliyenne
- Normandie Univ.; UNIHAVRE; CNRS; URCOM 76600 Le Havre France
- Ecole Normale Supérieure de Nouakchott; Département des Sciences Exactes; B.P. 990 Ksar Nouakchott Mauritania
| | - Frédéric Pin
- Normandie Univ.; UNIHAVRE; CNRS; URCOM 76600 Le Havre France
| | | | | | | | | | | | | | - Adam Daïch
- Normandie Univ.; UNIHAVRE; CNRS; URCOM 76600 Le Havre France
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Guégan F, Tognetti V, Joubert L, Chermette H, Luneau D, Morell C. Towards the first theoretical scale of the trans effect in octahedral complexes. Phys Chem Chem Phys 2016; 18:982-90. [DOI: 10.1039/c5cp04982b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this paper, we show that trans effects in octahedral complexes can primarily be related to differences in the ability, for a given ligand, to cede electron density to the metal cation under the influence of the ligand at the trans position.
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Affiliation(s)
- Frédéric Guégan
- Université de Lyon
- Institut des Sciences Analytiques
- UMR 5280
- CNRS
- Université Claude Bernard Lyon 1
| | - Vincent Tognetti
- Normandy University
- COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- CNRS
| | - Laurent Joubert
- Normandy University
- COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- CNRS
| | - Henry Chermette
- Université de Lyon
- Institut des Sciences Analytiques
- UMR 5280
- CNRS
- Université Claude Bernard Lyon 1
| | - Dominique Luneau
- Université de Lyon
- Laboratoire des Multimatériaux et Interfaces
- UMR 5615
- CNRS
- Université Claude Bernard Lyon 1
| | - Christophe Morell
- Université de Lyon
- Institut des Sciences Analytiques
- UMR 5280
- CNRS
- Université Claude Bernard Lyon 1
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37
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Melissen STAG, Tognetti V, Dupas G, Jouanneau J, Lê G, Joubert L. A DFT study of the formation of xanthydrol motifs during electrophilic poly(aryl ether ketone) synthesis. J Mol Model 2015; 22:18. [DOI: 10.1007/s00894-015-2861-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 11/08/2015] [Indexed: 11/24/2022]
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38
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Affiliation(s)
- Leonid Patrikeev
- Normandie Université COBRA, UMR 6014 et FR 3038, Université de Rouen, INSA Rouen, CNRS, Mont St Aignan, Cedex, France
| | - Laurent Joubert
- Normandie Université COBRA, UMR 6014 et FR 3038, Université de Rouen, INSA Rouen, CNRS, Mont St Aignan, Cedex, France
| | - Vincent Tognetti
- Normandie Université COBRA, UMR 6014 et FR 3038, Université de Rouen, INSA Rouen, CNRS, Mont St Aignan, Cedex, France
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39
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Morell C, Tognetti V, Bignon E, Dumont E, Hernandez-Haro N, Herrera B, Grand A, Gutiérrez-Oliva S, Joubert L, Toro-Labbé A, Chermette H. Insights into the chemical meanings of the reaction electronic flux. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1730-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Falkowska E, Laurent MY, Tognetti V, Joubert L, Jubault P, Bouillon JP, Pannecoucke X. Synthesis of SF5-substituted isoxazolidines using 1,3-dipolar cycloaddition reactions of nitrones with pentafluorosulfanyl acrylic esters and amides. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.08.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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41
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42
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Hamdoun G, Sebban M, Tognetti V, Harrison-Marchand A, Joubert L, Maddaluno J, Oulyadi H. Alkyllithium Mixed Aggregates: Dynamic Behavior and Comprehensive Analysis of NMR 2J7Li–7Li Spin–Spin Coupling. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00162] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ghanem Hamdoun
- Normandie Université, COBRA, UMR6014 & FR3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Muriel Sebban
- Normandie Université, COBRA, UMR6014 & FR3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Vincent Tognetti
- Normandie Université, COBRA, UMR6014 & FR3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Anne Harrison-Marchand
- Normandie Université, COBRA, UMR6014 & FR3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Laurent Joubert
- Normandie Université, COBRA, UMR6014 & FR3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Jacques Maddaluno
- Normandie Université, COBRA, UMR6014 & FR3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Hassan Oulyadi
- Normandie Université, COBRA, UMR6014 & FR3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
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43
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Tognetti V, Morell C, Joubert L. Quantifying electro/nucleophilicity by partitioning the dual descriptor. J Comput Chem 2015; 36:649-59. [PMID: 25649932 DOI: 10.1002/jcc.23840] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/19/2014] [Accepted: 12/20/2014] [Indexed: 12/28/2022]
Abstract
Translating local electro/nucleophilicities into the language of reactive sites is an appealing theoretical challenge that could be conducive to strengthen the collaborative dialogue between experimentalists and quantum chemists. The usual schemes for such condensation, relying on atomic charges, may however lead to important information loss, due to a sometimes inappropriate averaging of the reactivity anisotropy. In this article, we present instead an approach based on the dual descriptor Δf, which aims at partitioning real space into nonoverlapping reactive domains that feature a constant Δf sign. This strategy enables not only to identify the nucleo/electrophilic regions inside a molecule but also to quantify meaningful properties (mean value, volume, electron population…). Its interest is then illustrated on two specific chemical problems: the measure of σ-holes in the context of halogen bonds, and of the electrophilicity of organic carbocations, casting the light on the versatility of this method.
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Affiliation(s)
- Vincent Tognetti
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére, 76821, Mont St Aignan, Cedex, France
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44
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Yahia-Ouahmed M, Tognetti V, Joubert L. Halogen–halogen interactions in perhalogenated ethanes: An interacting quantum atoms study. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2014.09.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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45
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Falkowska E, Tognetti V, Joubert L, Jubault P, Bouillon JP, Pannecoucke X. First efficient synthesis of SF5-substituted pyrrolidines using 1,3-dipolar cycloaddition of azomethine ylides with pentafluorosulfanyl-substituted acrylic esters and amides. RSC Adv 2015. [DOI: 10.1039/c4ra14075c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Di-, tri- and tetrasubstituted pentafluorosulfanylated pyrrolidines have been efficiently synthetized via 1,3-dipolar cycloaddition of azomethine ylides.
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46
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Inostroza-Rivera R, Yahia-Ouahmed M, Tognetti V, Joubert L, Herrera B, Toro-Labbé A. Atomic decomposition of conceptual DFT descriptors: application to proton transfer reactions. Phys Chem Chem Phys 2015; 17:17797-808. [DOI: 10.1039/c5cp01515d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an atomic decomposition of the molecular energy, reaction force and reaction flux, which is based on Bader's atoms-in-molecules theory.
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Affiliation(s)
- Ricardo Inostroza-Rivera
- Nucleus Millenium Chemical Processes and Catalysis (CPC)
- Laboratorio de Química Teórica Computacional (QTC)
- Facultad de Química, Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Meziane Yahia-Ouahmed
- Normandy Univ
- COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- 1 rue Tesniére 76821 Mont St Aignan
| | - Vincent Tognetti
- Normandy Univ
- COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- 1 rue Tesniére 76821 Mont St Aignan
| | - Laurent Joubert
- Normandy Univ
- COBRA UMR 6014 & FR 3038
- Université de Rouen
- INSA Rouen
- 1 rue Tesniére 76821 Mont St Aignan
| | - Bárbara Herrera
- Nucleus Millenium Chemical Processes and Catalysis (CPC)
- Laboratorio de Química Teórica Computacional (QTC)
- Facultad de Química, Pontificia Universidad Católica de Chile
- Santiago
- Chile
| | - Alejandro Toro-Labbé
- Nucleus Millenium Chemical Processes and Catalysis (CPC)
- Laboratorio de Química Teórica Computacional (QTC)
- Facultad de Química, Pontificia Universidad Católica de Chile
- Santiago
- Chile
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47
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Tognetti V, Yahia-Ouahmed M, Joubert L. Comment on “Analysis of CF···FC Interactions on Cyclohexane and Naphthalene Frameworks”. J Phys Chem A 2014; 118:9791-2. [DOI: 10.1021/jp509101s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Vincent Tognetti
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, and INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Meziane Yahia-Ouahmed
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, and INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Laurent Joubert
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, and INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
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48
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Tognetti V, Boulangé A, Peixoto PA, Franck X, Joubert L. A theoretical study on diastereoselective oxidative dearomatization by iodoxybenzoic acid. J Mol Model 2014; 20:2342. [DOI: 10.1007/s00894-014-2342-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 06/08/2014] [Indexed: 01/31/2023]
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49
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Jouanno LA, Di Mascio V, Tognetti V, Joubert L, Sabot C, Renard PY. Metal-Free Decarboxylative Hetero-Diels–Alder Synthesis of 3-Hydroxypyridines: A Rapid Access to N-Fused Bicyclic Hydroxypiperidine Scaffolds. J Org Chem 2014; 79:1303-19. [DOI: 10.1021/jo402729a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Laurie-Anne Jouanno
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière 76821 Mont-Saint-Aignan Cedex, France
| | - Vincent Di Mascio
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière 76821 Mont-Saint-Aignan Cedex, France
| | - Vincent Tognetti
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière 76821 Mont-Saint-Aignan Cedex, France
| | - Laurent Joubert
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière 76821 Mont-Saint-Aignan Cedex, France
| | - Cyrille Sabot
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière 76821 Mont-Saint-Aignan Cedex, France
| | - Pierre-Yves Renard
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière 76821 Mont-Saint-Aignan Cedex, France
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Syzgantseva OA, Tognetti V, Boulangé A, Peixoto PA, Leleu S, Franck X, Joubert L. Evaluating Charge Transfer in Epicocconone Analogues: Toward a Targeted Design of Fluorophores. J Phys Chem A 2014; 118:757-64. [DOI: 10.1021/jp410407u] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Olga A. Syzgantseva
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Vincent Tognetti
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Agathe Boulangé
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Philippe A. Peixoto
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Stéphane Leleu
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Xavier Franck
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
| | - Laurent Joubert
- Normandy University, COBRA UMR 6014 & FR 3038, Université de Rouen, INSA Rouen, CNRS, 1 rue Tesniére 76821 Mont St Aignan, Cedex, France
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