Dissertations / Theses on the topic 'Indole – Composés'
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Lebouvier, Nicolas. "Synthèse et évaluation pharmacologique de composés indoliques ou apparentés à activité antifongique et antileishmanienne." Nantes, 2004. http://www.theses.fr/2004NANT12VS.
Full textA new series of azole derivatives of 2-aryl-3-indolyl-l-triazolyl-2-propanol were designed and prepared from the corresponding oxiranes by a newly developed ring-opening reaction carrying under micro-wave irradiations. All target compounds were evaluated for antifungal and antileishmanial activities. Test fangal strains (Candida albicans, C. Krusei, C. Parapsilosis, Aspergillus fumigatus, Microsporum cams, Trichophyton mentagrophytes) were obtained for the ATCC or were clinical isolates. Further pharmacomodulation works were accomplished by replacement of indole; heterocycles such as 7-azaindole, benzimidazole and benzotriazole were used. Fixation of propan-2-ol chain at C-3 on indole was also studied with the aim to get a broader antifungal spectrum. The high level activities on Candida albicans encouraged us to separate the enantiomers from racemic mixtures. Enantiomers were directly separated by HPLC using cellulose tris (3,5-dimethylphenylcarbamate) as a chiral stationary phase. The S-enantiomer of 2-(2,4-dichlorophenyl)-3-(1H-indol-l-yl)-l-(1H-l,2,4-triazol-lyl)propan-2-ol showed potent antifungal activity against Candida albicans in vivo. All target compounds are compared to amphotericin B, ketoconazole, fluconazole, itraconazole and meglumine antimoniate
Pigeon, Pascal. "Phtalimidométhylthiophènes comme précurseurs de composés polycycliques comportant les motifs isoindole et thiophène." Le Havre, 1996. http://www.theses.fr/1996LEHA0004.
Full textAntoine, Maud. "Synthèse et évaluation pharmacologique de composés indoliques et pyridopyraziniques à visée antitumorale." Nantes, 2005. https://archive.bu.univ-nantes.fr/pollux/show/show?id=f2c53739-f770-45cf-8fd6-82535e3514ee.
Full textPrevious works in our laboratory showed the therapeutic interest for antitumor chemotherapy of 2-[1-(4-chlorobenzyl)indol-3-yl]-N-(pyridin-4-yl)glyoxamide I as a tubuline polymerisation inhibitor. Keeping the core structure of I, the access to the analogues in positions 4 and 5 of the indole ring and the pharmacomodulation of the 4-chlorobenzyle moiety and in position 3 of the heterocycle in amino-acid, vinylogue and 2,4-dioxobutyramide series are described. Protein kinases constitute a therapeutic target with growing interest, especially in cancer treatment. The conception of pyrido[2,3-b] or [3,4-b]pyrazines substituted in positions 2,3 or 8, potent kinase inhibitors, is developed. The access to these structures was envisaged by the condensation between an orthodiaminopyridine and a symmetrical diketone in biaryl series. Various routes in monoaryles are also described
Boëlle, Jérôme. "Synthèse de biocides potentiels destinés à l'agrochimie principalement en série nitrée." Nancy 1, 1997. http://www.theses.fr/1997NAN10177.
Full textIn this work, we have developed a new route to beta-nitroenones substitued at the beta-position by an hydrogen atom starting from alpha, beta-unsaturated ketones. The reactivity of these compounds towards nucleophiles was studied. Titanium enolates add to carbonyl finction, their corresponding ethylene acetals reacted with isocyanoacetates and tosylmethyl isocyanide affording respectively 3-alkanoylpyrrole-2-carboxylates, 7-oxo-4,5,6,7-tetrahydro-2H-isoindole-1-carboxylates and 3-alkanoyl-4-nitropyrroles. The second part of of this work was devoted to the synthesis of cyclic beta-nitroenones based on the regioselective ring opening of nitroepoxides. Nucleophiles (bis activated compounds enolates, thiolates, alkoxides) added regioselectively on the nitroalkene function alpha to the carbonyl group. Finally, in the third part, we have investigated the preparation of analogs of Imidacloprid, an insecticide used in agriculture. Different families of compounds were envisaged : Potential insecticides as nitroimines, nitroiminoimidazolidines and nitroalkenes were synthetized
Cardinaud, Isabelle. "Pyrrolo[1,2-a][1,8]naphtyridines, synthèse, structure et réactivité." Montpellier 1, 1992. http://www.theses.fr/1992MON13514.
Full textRached, Abdelouahed. "Hétérocycles dérivés de la théophylline, des indolizines, du thiazole, du benzothiazole et du benzimidazole : synthèse et étude pharmacologique." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT055G.
Full textOthman, Mohamed-Salem. "Étude de réactions de cyclisation conduisant à des analogues d'alcaloïdes tri ou tétracycliques." Le Havre, 1996. http://www.theses.fr/1996LEHA0012.
Full textOhier, Philippe. "Réactions d'annelation en diazépines, oxazocines, diazocines et indolines fusionnées à un cycle thiophène ou [1] benzothiophène." Le Havre, 1995. http://www.theses.fr/1995LEHA0003.
Full textRodriguez, Dominguez Juan Carlos. "Nouvelles synthèses de dérivés hetérocycliques pour applications biologiques : (Céphalosporines, Coumarines et Indoles) = New synthesis of heterocyclic derivatives for biological applications (Cephalosporins, Coumarins and Indoles)." Metz, 2006. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/2006/Rodriguez_Dominguez_Juan_Carlos_SMZ0618.pdf.
Full textSemisynthetic cephalosporins, coumarins and indoles derivatives are very valuable compounds in the biochemical branch. The firsts commonly used in the world health system against bacterial infections; the second and last ones, presents in nature and life sciences with wide spectra of biological activities and uses. Due their important applications it is necessary to count with appropiated methods of synthesis in order to obtain them. Shorter reactions time with good yields and as always as possible, in a friendly environment work up, are the main aspects to shoot down the costs of the final products. In this work we develop some improved synthetic procedures in order to obtain some cephalosporani-antibiotics of third generation, coumarins and (1-acetyl-indol-3-yl) acetates, the most part of them reducin! steps and time with a sensitive increase in yields; others, introducing some heterogeneus catalysts bringin ! the final products up with similar yields to those from literature with not toxic waste to treat
Ayerbe, Nathalie. "Synthèse et évaluation de l'activité antitumorale de composés à sous-structures benzodioxiniques, benzoxaziniques ou 7-azaindoliques apparentés aux indolocarbazoles." Orléans, 2003. http://www.theses.fr/2003ORLE2009.
Full textBourderioux, Aurélie. "Synthèse d'hybrides d'indolocarbazoles et de la caulersine, composés à visée antitumorale." Phd thesis, Université d'Orléans, 2007. http://tel.archives-ouvertes.fr/tel-00147916.
Full textDans le cadre de la recherche de nouveaux agents cytotoxiques et d'inhibiteurs de kinases toujours plus sélectifs, la structure principale des phénylcarbazoles, appartenant à la famille des indolocarbazoles, a été modifiée par introduction d'une tropone centrale, cycle à 7 chaînons porteur d'une fonction carbonyle. Les différentes voies de synthèse permettant d'accéder à cette nouvelle famille de composés appelés oxophénylarcyriaflavines ont été étudiées. La méthode de choix retenue pour l'étape finale de la synthèse est la cyclisation électrophile en position 2 de l'indole. Cette synthèse a ensuite été généralisée aux composés substitués par des groupements hydroxyles en position 5 de l'indole d'une part et en position 4' et 5' du noyau phényle d'autre part. Les 17 molécules finales ainsi synthétisées ont subi divers tests biologiques permettant d'établir les RSA de cette nouvelle famille de composés. Finalement, la méthodologie mise au point pour les oxophénylarcyriaflavines a été étendue à la synthèse de la toute première famille de composés bisindoliques possédant également une tropone centrale.
Cazoulat, Isabelle. "Contribution à l'étude phytochimique de Isonoba hexaloba Engl. & Diels." Rouen, 2004. http://www.theses.fr/2004ROUEP024.
Full textChèze, Catherine. "Synthèse et réactivité d'azépino et azocino-indoles : une synthèse totale trés courte de la tubotai͏̈wine." Bordeaux 2, 1993. http://www.theses.fr/1993BOR2E001.
Full textCristea, Victoria Cecilia. "Etudes électroanalytiques du p-nitrophénylsérinol et de quelques dérivés. Application à l'électrosynthèse de produits d'intérêt pharmacologique." Rennes 1, 2003. http://www.theses.fr/2003REN10114.
Full textPierre, Francis. "Recherches dans le domaine de la synthèse du méthoxy-5 oxo-9 dihydro-7, 8 pyranno [2,3-g] indole et d'analogues." Mulhouse, 1986. http://www.theses.fr/1986MULH0001.
Full textTang, Sandrine. "Synthèse, marquage et validation pharmacologique de ligands des récepteurs sérotoninergiques 5-HT6 et 5-HT7 de type indole et pyrrolidine." Lyon 1, 2007. http://www.theses.fr/2007LYO10233.
Full textBoulhout, Mohammed. "Etude de l'adsorption de composés organiques sur des matériaux poreux de type Metal Organic Framework (MOF)." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4824/document.
Full textIn order to meet the industrials requirements, new porous materials are tested for new applications or to improve existing processes. The Metal Organic Frameworks (MOFs) are hybrids crystalline compounds made up of clusters (or chains) of metal ions coordinated by organic linkers to form three dimensional structures. The ability to vary these two entities offers to MOFs a wide variety of organized structure with pore sizes controlled. The aim of this thesis was to evaluate the MOF performances for the adsorption of organic compounds and also understand the related adsorption mechanism. The two selected issues are of interest for the petrochemical industry. The para-xylène separation from the other xylene isomers (ortho, meta) and ethylbenzene, allows to meet the demand for raw materials in the polyethylene terephthalate (PET) synthesis. The nitrogen and sulphur compounds adsorption allows the purification of fuels (sulphur content set by legislation). We present a thermodynamic study of adsorption from solution based on the determination of adsorption isotherms by depletion method and adsorption enthalpies by microcalorimetry. The pure xylenes vapour adsorption was also studied to understand the solvent effect. A wide variety of behaviour has been observed depending on MOF structures. For example we demonstrated the effect of xylene isomers molecular packing on MOF selectivity. Furthermore we have shown that the MOF structure flexibility influence the interactions involved during xylene isomers adsorption. We also demonstrated that MOF with unsaturated metallic centres present selectivity for nitrogen compounds (Lewis acid/base)
Le, Strat Frédéric. "Addition conjuguée d'organométalliques sur des acétals propargyliques : application intramoléculaire à l'hétérocyclisation binucléaire." Rouen, 2002. http://www.theses.fr/2002ROUES027.
Full textThis work deals with the intramolecular version of the conjugated addition of organometallic nucleophiles on propargylic ketals leading to binuclear heterocycles. The application of this reaction to propargylic ethers and amines gives access to 3-vinylbenzofurans and furopyridines, thrugh an anionic pathway relying on a cyclisation-elimination-isomerisation cascade. The synthesis of 3-vinylindoles by the same reaction first requires an isomerisation of the alkyne in the corresponding allene. Vinylisoquinolinones and (iso)chromanes, which could not be obtained by lithiation, required a pallado-catalysed cyclisation followed by a conjugated elimination in a separated step. The [4. 3. 0] vinylheterocycles have been engaged in [4+2] cycloadditions with different acrylates and have led to only one regioisomer with a stereoselectivity which depends on the activation mode. The [4. 4. 0] vinylheterocycles react with maleic anhydride, leading stereoselectivity to the endo cycloadduct
Salome, Christophe. "Construction de nouveaux hétérocycles par réaction de Buchwald : Synthèses et propriétés pharmacologiques." Université Louis Pasteur (Strasbourg) (1971-2008), 2007. http://www.theses.fr/2007STR13230.
Full textThe principal work of the Medicinal Chemist is the design and structural optimization of molecules of pharmacological and therapeutic interest. In this objective, we were interested in the modification of the molecular framework of known heterocyclic compounds and their pharmacological properties. Thus initially we developed new synthetic strategies for the construction of the general scaffold through the Buchwald reaction. The compounds were then pharmacologically evaluated in the search for new phosphodiesterase inhibitors. The adopted synthetic strategy implements a Buchwald reaction with an NH grouping which is slightly nucleophilic with strongly electron deficient halogenated heterocycles which generally results, after one or two additional stages, in novel, interesting heterocycles. By this method, a large number of novel heterocycles such as aza-benzodiazepin-2-ones, aza-benzodiazepine-2,5-diones, pyrido[4,5-b]imidazoles and the tricyclic systems of the benzopyridodiazepines type were synthesized successfully in a small number of steps. In the second objective, the impact of the structural modification (replacement of the heterocycle, the extension or the contraction of the ring system and the transformation of the bicyclic system into a tricyclic system) on the pharmacological properties and, in particular, on phosphodiesterase inhibition was studied. By modifying the structures, we also could more precisely include/understand the pharmacophore of this type of compounds. Among the number of analogues synthesized and tested some compounds have interesting phosphodiesterase-4 inhibitor properties
Courant, Thibaut. "Multi-fonctionnalisation d’imines : synthèse de composés aminés α-β-fonctionnalisés par procédé photocatalysé et réactions asymétriques organocatalysées". Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112308.
Full textThe aim of this study is the development of new methodologies for imines functionalization by organocatalysed and photocatalysed processes.First, a photocatalysed alkylation reaction of enecarbamates have been described. The use of organometallic Iridium complexes allowed the double functionalization of enecarbamates leading to highly substituted imines surrogates. This process is a green alternative to the use of heavy metals and only needs visible light as an renewable energy source to proceed. This environment-friendly radical transformation has been submitted to mechanistic study.In a second part, an aza-Friedel-Crafts reaction organocatalysed by chiral Brønsted acid has been studied. The bi-fonctionnality of chiral phosphoric acids has been advantageously used to perform the Friedel-Crafts addition of various substituted indole to in situ generated acyl-iminium ions. The compounds obtained by this methodology are showing interesting biological activities on central nervous system. Finally, the first enantioselective Povarov reaction involving amino-heterocycles as 2-azadienes precursors has been reported. This reaction is based on previous lab reports and the synthesis of tetrahydroquinoline analogues has been described. The multicomponent reduction/Povarov reaction sequence catalyzed by chiral phosphoric acids derived gives a rapid access to a wide library of bioactives analogues
Demuynck, Luc. "N-aminoindoles et N-aminoindolines : synthèse et réactivité : synthèse de composés à squelette C-azaaspidospermane et E-azaéburnane." Paris 11, 1988. http://www.theses.fr/1988PA112059.
Full textThe results presented in this thesis are presented in two parts :- The first part is concerned with a new reactivity of indole derivatives induced by an N-aminodihydroindole function. Strong acid activation leads to very electrophilic "iminium-benzenium" cations, which can be substituted by nucleophilic aromatic com pounds. The indole or dihydroindole nucleus is generally recognized for its nucleophilic properties. For this reactivity study, it was necessary to find new routes to N-aminodihydroindoles and N-aminoindoles. These types of compounds are not very well known. All compounds described herein are new. - The second part of this thesis is concerned with the total synthesis of E-azaeburnane derivatives, which constitute indolic alkaloid analogues of biological interest. Moreover, new rearrangment reactions have allowed an original approach to the synthesis of the azaaspidospermane skeleton. The mechanism of this reaction has been shawn ta be related to the reactivity of electron-deficient nitrogen atoms
Arzel, Erwan. "Delta-carbolines et benzo-delta-carbolines : nouvelle voie d'accès via la métallation isomérisante." Rouen, 1999. http://www.theses.fr/1999ROUES082.
Full textPineau, Philippe. "Nouvelles voies de synthèse de dérivés de substitution de l'ellipticine : valorisation de la métallation de pyridine." Rouen, 1989. http://www.theses.fr/1989ROUES037.
Full textBaglai, Iaroslav. "Synthèse de carbo-benzènes, carbo-cyclohexadiènes et carbo-butadiènes à substituants chromophores." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2385/.
Full textThe project developed for this PhD thesis is focused on the synthesis and characterization of highly unsaturated and carbon-enriched molecules called carbo-mers, substituted by polycyclic and heterocyclic chromophoric groups. The first part of the work concerns the synthesis of quadrupolar carbo-benzenes bearing purely hydrocarbon fluorene substituents, which are either directly connected to the carbo-benzene ring or separated from it by acetylenic linkers. The second part deals with the synthesis of carbo-benzenes substituted by nitrogen-containing heterocycles (indoles or carbazoles) and of two series of analogs: macrocyclic but non macro-aromatic carbo-cyclohexadienes, and carbo-butadienes, which can be viewed as the acyclic references of the two other series. Selected representatives of these three sub-families of carbo-mers were prepared, and a comparative study of their physico-chemical properties was conducted. The last chapter addresses the synthesis and functionalization of isoindoles in view of anchoring them to a carbo-benzene ring. This work has highlighted the peculiar electrophilic character of 3-chloro-2-phenylisoindole-1-carbaldehyde, leading to an original rearrangement of the isoindole core into an amino-isochromanone. The results presented in this thesis open unprecedented perspectives in both the chemistry of nitrogen-containing heterocycles and carbo-mers, and more generally of aromatic polyacetylenics (notion of "p-frustration"). Finally, the study of photophysical properties of two carbo-benzenes described in this manuscript suggests potential applications in third order nonlinear optics, and in particular in two-photon absorption
Hammoud, Sokaina. "Accès à de nouvelles structures tricycliques di-iodes à base indolique et isoindolique par iodocyclisation." Thesis, Tours, 2015. http://www.theses.fr/2015TOUR4034.
Full textA new access pathway to the original tricyclic structures "di-iodinated oxazino-indole" was developed from the commercial 1H-indole-2-carboxylic acids or functionalized 1H-indole-2-carboxylic acid obtained by Hemetsberger-Knittel reaction. The last step in this sequence is an iodocyclisation reaction that is proved to be completely regio- and stereoselective via 6-exo-dig process. This methodology was then extended to isoindolic series allowing access to original "di-iodinated oxazino-isoindole" motifs. To further extend this methodology, new"di-iodinated oxazepino-indoles" were prepared using the same synthetic approach from the 1H-indole-7-carboxylic acid. The reactivity of the di-iodinated tri-cyclic structures has been studied via Cross-Coupling reactions (Stille, Sonogashira and Suzuki) by the use of palladium salts allowing a regioselective functionalization of the exocyclic iodine
Chrétien, Antony. "Etude de la diénophilie des hétérocycles aromatiques azotés à cinq chaînons dans les réactions de cycloaddition [4+2] à demande électronique normale." Rouen, 2005. http://www.theses.fr/2005ROUES048.
Full textIn 1988, Wenkert and Piettre reported the first cases of a cycloaddition involving five membered aromatic heterocycles as dienophile in normal electron demand Diels-Alder. These reactions, between an indole or pyrrole dienophile bearing an electronwithdrawing group on position 3 and an all-carbon diene, lead to polycyclic structure featuring a quaternary carbon and a cis stereochemistry at the ring junction. In order to develop this strategy, various substitutions on the aromatic nuclei and several activation methods of the Diels-Alder reaction, such as microwaves or high pressures, were studied. An application to the synthesis of monoterpenoid indole alkaloid precursors of strychnos and aspidosperma families, was then initiated. Intramolecular cycloaddition on indole derivatives leads quickly and diastereoselectively to highly functionalized tetracyclic structures useful for the preparation of the above alkaloids
El, Marrouki Dalel. "Contribution à l’étude de la réactivité de quelques accepteurs de Michael cycliques et applications." Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0197.
Full textThis thesis focuses on the synthesis of some nitrogenous heterocycles from the same family of precursors: 1,4-diketones. These 1,4-diketones have been obtained either by a Nef reaction through the conversion of nitro compounds into ketones or by a Wittig reaction using various Wittig ylides and cyclohexanedione. These reaction intermediates were subsequently used for the synthesis of indole derivatives via a 1,2-addition reaction. We were also able to turn the selectivity of the reaction towards the synthesis of indolones from a 1,4-addition reaction. With hydrazine monohydrate, 1,4-diketones have also provided access to cinnolines in excellent yields
Juen, Ludovic. "Synthèse et évaluation biologique d'inhibiteurs de STAT5 dans le traitement des leucémies myéloïdes." Thesis, Tours, 2016. http://www.theses.fr/2016TOUR3811/document.
Full textLeukemias, myeloproliferative and myelodysplastic syndromes are the leading cause of cancer in children under 15 years. STAT5 transcription factors have a key role in the genesis and maintenance of leukemia. The inhibition of STAT5 could decrease survival, self-renewal and quiescence of leukemic cells and their potential resistance to anti-cancer agents. After a previous screening of our chemical library, a derivative comprising a 4,4-dimethyl-1,2,3,4-tetrahydroquinoline core linked to an indole by an ethoxy chain, was identified as an inhibitor of STAT5 phosphorylation. In this context, we have optimized the synthesis of the biheterocyclic scaffold and carried out pharmacomodulation studies yielding 31 new potential inhibitors. One of these new compounds reduced viability of chronic and acute myeloid leukemia cell lines with EC50 from 3 to 9 µM. This new lead selectively inhibits STAT5 phosphorylation
Coste, Jérôme. "Conception de ligands mixtes mélatoninergiques et sérotoninergiques à structure azaindolique, benzoindolique et indolique." Thesis, Orléans, 2012. http://www.theses.fr/2012ORLE2016.
Full textMelatonin is a hormone produced by the pineal gland during the night. Some studies have shown that agonists of melatoninergic receptors (MT1 and MT2) could be efficient antidepressants. Few years ago, Agomelatine, an agonist of MT1, MT2 receptors and antagonist of 5-HT2C receptor, was developed by Les Laboratoires Servier, The goal of this thesis was to design a molecule with a similar pharmacological profile. First, some 4- and 6-azaindolic ligands were synthesised. We work around the development of the method to synthesised this molecules via the Fischer cyclisation and improved it by micro-ondes using. Second, following structure-activity studies with MT receptors, we have synthesised 7-azaindolics and benzoindolics compounds. Third, some indolics analogs presenting a good MT1 and MT2 affinity were coupled with a bispyridinic entity to enhance an 5-HT2C activity. Finally, dichloroindolics ligands were synthesised. All this work allows the synthesis of interesting ligands. Some of these molecules are still on study
Truel, Isabelle. "Synthèses d'hétérocycles phosphoniques dans les séries de l'indole, du furane, du pyrrole et de la pyridazine." Rouen, 1998. http://www.theses.fr/1998ROUES062.
Full textChopin, Nathalie. "Etude de la dienophilie des benzofurannes et indoles. Application à la synthèse d’analogues de la galanthamine." Rouen, 2008. http://www.theses.fr/2008ROUES017.
Full textThe Diels-Alder approach is a very convergent way of assembling heterocycles rapidly and stereoselectively. Because of their aromaticity, the electron-rich benzofurans and indoles have not been used very often as dienophiles in normal electron demand [4+2] cycloaddition. We have shown that, when properly substituted by electron withdrawing group in position 3, benzofurans can lead to desaromatised tricyclic cycloadducts featuring a quaternary carbon at ring junction and a cis stereochemistry. These oxygenated skeletons possess a framework common to Opium and Amaryllidaceae alkaloids, galanthamine, used in Alzheimer’s disease treatment, has been selected as a potential molecular target for the application of this approach. In order to develop this synthetic methodology, the influence of various substituents on the aromatic benzofuran ring was studied as well as the activation mode, thermal, hyperbaric and/or by Lewis acid. The cycloaddition reaction was optimized and the results gathered so far allow to envision total synthesis of galanthamine. The possibility of reaching the nitrogenated analogue azagalanthamine throught a similar approach using indoles was also considered. An intramolecular cycloaddition was envisaged and optimization of the synthesis of several substrates was carried out. The target tetracyclic adducts are similar to Büchi’s ketone, a key intermediate in the preparation Aspidosperma and Strychnos alkaloids
Mondière, Aurélie. "Réactions multicomposants et applications : synthèse de cyclopent[b]indoles et pyrrolo[1,2-a]indoles : synthèse diastéréosélective de lignanes tétrahydrofuraniques trisubstitués." Phd thesis, Université Claude Bernard - Lyon I, 2010. http://tel.archives-ouvertes.fr/tel-00837814.
Full textBahlaouan, Zineb. "Réactivité cupro-catalysée des systèmes mono, di et triiodés porteurs d'une fonction acide carboxylique ou dérivée : applications à la synthèse de nouveaux hétérocycles." Thesis, Tours, 2011. http://www.theses.fr/2011TOUR4035/document.
Full textHeterocycles of oxygen, nitrogen and sulfur are patterns found in many natural products possessing interesting biological activities. Several researchers describe the synthesis of oxygen and nitrogen based heterocycles using transition metals as catalyst.In the present study, we focused initially on the copper-catalyzed synthesis of pyrano[3',4':4,5]imidazo[1,2-a]pyridin-1-ones by a tandem coupling-heterocyclisation reaction from derivatives of 3-iodo-, 3,6- or (3,8) diiodoimidazo[1,2-a]pyridine-2-carboxylic acid and terminal alkynes in the presence of copper (I) salts as catalyst in DMF. This procedure does not require the use of any expensive transition metal complexes like palladium and supplement any additives. The extension of this methodology to 2,3,5-triiodobenzoic acid allowed the regioselective synthesis of new isocoumarins substituted in positions 3, 5 and 7. Regioselective reactivity of iodine atoms in position 5 and 7 has been studied by palladium coupling reactions and nucleophilic substitution to broad its synthesis to a wide variety of new substituted isocoumarins
Antoine, Maud Le Baut Guillaume Marchand Pascal. "Synthèse et évaluation pharmacologique de composés indoliques et pyridopyraziniques à visée antitumorale." [S.l.] : [s.n.], 2005. http://castore.univ-nantes.fr/castore/GetOAIRef?idDoc=26641.
Full textRoberge, Benoit. "Étude optique et magnétique des composés RVO[indice inférieur 3]." Thèse, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/8191.
Full textDiker, Khalid. "Methodes de synthese en serie indolique : aminoacides non naturels, tetrahydro-beta-carbolines, azepino(4,5b)- et azocino-(4,5b)-indoles, indoloquinodimethanes, composes bis-indoliques macrocycliques." Reims, 1996. http://www.theses.fr/1996REIMP207.
Full textSabeur, Mansouri. "Étude magnéto-optique des composés multiferroïques: DyMnO[indice inférieur 3] et TbMn[indice inférieur 2]O[indice inférieur 5]." Thèse, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/6074.
Full textDavid, Marion. "Chimie des nitrones et des indoles : application à la synthèse de composés indoliques bio-actifs." Université Joseph Fourier (Grenoble), 2003. http://www.theses.fr/2003GRE10194.
Full textSaraiva, Lorenzo de Amorim. "Definição do ponto de colheita comercial e da concentração de etileno exógeno visando melhor aproveitamento do potencial comercial e nutricional de bananas da cultivar Thap Maeo." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/9/9131/tde-10062015-170212/.
Full textBanana is an important staple food. Unlike the world Market, which has only the Cavendish Bananas as export bananas, Brazilian market has many Bananas varieties. However, biochemical and physiological information about these varieties are still scarce and different bananas cultivars are treated the same way in pre or post-harvest, which often affects the quality of the fruit. In this context, two issues are important to reach best fruit quality: definition of harvest time and the exogenous ethylene treatment. Now a day the harvest time is defined by the diameter of the fruits and the ethylene treatment is equal for all cultivars. However, fruits with the same diameter not always are in the same development grade and the post-harvest ethylene treatment, aiming a faster and uniform ripening, does not follow any technical recommendation. The consequences for the lack of criteria in the harvest and for the ethylene treatment might be a low quality and shelf life banana. Banana production is hampered by plant health problems occurring in the production fields, including the diseases such as the Sigatokas and the Panama Wilt. Given the threat of the banana diseases, and the damage they can cause, the introduction of resistant cultivars is the best way to reduce the pressure of these pathogens on this crop. Being resistant to Sigatokas and Panama diseases, this work aimed to know better the cultivar Thap Maeo (Musa acuminata AAB cv. Thap Maeo) whose main defect is a short shelf life. The objectives of this work were: (1) to establish the harvest time of Thap Maeo bananas using the thermal sum techniques, (2) using the physico-chemical characterization of the fruit, establish the ideal concentration of exogenous ethylene to promote uniform ripening of fruits and (3) study the hormonal balance in the fruit ripening. The first step was a field experiment to determine the base temperature and the maximum physiological age. These parameters are used to calculate the thermal sum. The next step was to harvest fruits from different times of the year to confirm the methodology. It was established a methodology to estimate the harvest time according to the season in which the fruit has developed. Five ethylene concentration were tested (0-1000 ppm). Results showed that even the low ethylene concentration applied could promote the uniform ripening of the fruits with no apparent differences between the treatments. Furthermore, the analysis of volatile compounds in the pulp indicate that the major difference between the aroma of treatments is between treated and untreated fruits. The fruits that were not treated showed a higher amount of identified compounds. For all harvested fruits, the period between the ripening start and full ripening of the fruit was short when compared to the Nanica bananas. Levels of the hormones indole-3-acetic acid and abscisic acid, in addition to ethylene, were quantified to better understand these results. Compared to previous studies, with cultivars of Nanica subgroup, the cultivar Thap Maeo produce more ethylene and ABA during ripening, and have lower IAA level in the green stage. These hormonal differences may explain the short maturity period of this cultivar.
Zogo, Mboulou Guy Bertrand. "Étude en spectroscopies optiques du composé laser YVO[indice inférieur 4]:Nd[indice supérieur 3+]." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0014/MQ35716.pdf.
Full textSaber, Mansouri. "Étude par spectroscopie Raman des composés PrMnO[indice inférieur 3] et Pr[indice inférieur 0.5]Ca[indice inférieur 0.5]MnO[indice inférieur 3] monocristaux et couches minces." Mémoire, Université de Sherbrooke, 2008. http://savoirs.usherbrooke.ca/handle/11143/4792.
Full textRenaud, Jacques. "Les fluctuations supraconductrices dans le composé Pr[indice inférieur 2-chi]Ce[indice inférieur chi]CuO[indice inférieur 4+delta]." Thèse, Université de Sherbrooke, 2006. http://savoirs.usherbrooke.ca/handle/11143/5067.
Full textBarba, David. "Étude par spectroscopie optique des composés RE¦1¦+[indice]xBa¦2¦-[indice]xCu¦3O[indice]y(RE = Nd, Sm, Pr, Y) dans l'infrarouge moyen." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0017/MQ56857.pdf.
Full textGlinsky-Olivier, Nicolas. "Nouvelles stratégies pour la synthèse d'hétérocycles chiraux par catalyse à l’Au(I)." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS564.
Full textTetrahydro-β-carbolines are moieties commonly found in many natural products. Most of them being chiral compounds, it is of high importance to be able to control the stereochemistry of the chiral center of the tetrahydro-β-carbolines. Enantioselective gold catalysis has been developping for a few years. In this PhD work, we report the development of an enantioselective Pictet-Spengler reaction using chiral Au(I) complexes. We were able to synthesize more than 40 enantioenriched tetrahydro-β-carbolines with enantiomeric excesses up to 95 %. It is surprising that a Au(I) complex is able to catalyse such a reaction. It hence process via an original mechanism including an auration step of the indole. In order to solve the mechanism of this reaction, we performed both experimental and computational studies. We then extented this new Au(I) reactivity to other Pictet-Spengler like reactions using analogs of tryptamines. At last, we have developed the synthesis of new indoloquinuclidines scaffolds. Those molecules were synthesized in an enantioselective manner using the combination of organocatalysis with chiral phosphoric acids and gold catalysis
Langlois, Alexandre. "Étude de l'état supraconducteur du composé [kappa]-(BEDT-TTF)[indice inférieur 2]Cu(SCN)[indice inférieur 2]." Mémoire, Université de Sherbrooke, 2006. http://savoirs.usherbrooke.ca/handle/11143/4690.
Full textLarger, Ronan. "Étude en conductivité thermique du composé Sm[indice inférieur 2]CuO[indice inférieur 4] dopé au cérium." Mémoire, Université de Sherbrooke, 2005. http://savoirs.usherbrooke.ca/handle/11143/4691.
Full textDaniel, Ruari 1974, Ricardo Andrade 1960 Rebelo, and Universidade Regional de Blumenau Programa de Pós-Graduação em Química. "Síntese de compostos 5,6-metilenodioxissubstituídos análogos ao ácido indol-3-il-propanóico /." reponame:Biblioteca Digital de Teses e Dissertações FURB, 2008. http://www.bc.furb.br/docs/DS/2008/357617_1_1.pdf.
Full textMonchi, Keyvan. "Transition de Peierls sous champ magnétique en présence d'impuretés application aux composés Per[indice inférieur 2] [Au[indice inférieur x]Pt[indice inférieur 1-x](mnt)[indice inférieur 2]]." Mémoire, Université de Sherbrooke, 1997. http://savoirs.usherbrooke.ca/handle/11143/4378.
Full textRichard, Pierre. "Étude en transmission infrarouge et en hyperfréquence du composé Nd[indice 2-x]Ce[indice x]CuO[indice 4]." Sherbrooke : Université de Sherbrooke, 2000.
Jackson, Francis. "Propriétés magnétiques du modèle de Hubbard et applications au composé supraconducteur La¦2¦-[indice]xSr[indice]xCuO¦4." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq21769.pdf.
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