Dissertations / Theses on the topic 'Indole alcaloïdes'
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Nkiliza, Jean. "Synthèse totale de la 19-hydroxytubotaïwine et préparation d'indoloazépines de type Iboga." Bordeaux 2, 1990. http://www.theses.fr/1990BOR2B002.
Full textNgouansavanh, Tifelle. "Réactions de passerini et d'ugi dans des conditions oxydantes et approche vers la synthèse totale de la (-)-norsuaveoline." Paris 11, 2008. http://www.theses.fr/2008PA112209.
Full textThis scientific project focuses in particular on the development of new reactions tandem, combining oxidation process and multi-component reactions and on the approach towards total synthesis of (-)-norsuaveoline. In the first part of this work, we have developed a new concept: the oxidative Passerini reaction in the presence of IBX. The reaction is carried out in mild conditions and provided a wide variety of alpha-acyloxycarboxamides in one step. Primary alcohol is an efficient partner in the oxidative Passerini reaction and this methodology has demonstrated the potential of such a process, particularly when the aldehyde is unstable or difficult to handle. Then, this concept has been extended to the Ugi reaction and allowed a dual acylation of nitrogen and alpha-carbon centers of tetrahydroisoquinoline and provided Csp3-Csp2 bonds in one step. Morever this tandem oxidation / UGI reaction is particularly rapid and efficient for the synthesis of polypetides, without the use of peptide-coupling agents and protection / deprotection steps. Eventually, the second part of this research project described our approach towards the total synthesis of an alkaloid : the (-)-norsuaveoline. The original and synthetic approach based on modular construction of the molecule from the right side starting from L-(-)-glutamic acid, and a late formation of indole nucleus by a palladium catalysed heteroannulation with substituted o-iodoanilines. During this work, we validated three key-steps of the synthesis : formation of oxazole with lithiated methylisocyanide, intramolecular Kondrat’eva reaction leading to a trisubstituted pyridine and formation of a indole derivative with a palladium catalysed heteroannulation already developed in our laboratory
Jarret, Maxime. "Synthèses totales d’alcaloïdes indolo-monoterpéniques : (–)-17-nor-excelsinidine, (+)-16-épi-pléiocarpamine, (+)-16-hydroxyméthyl-pléiocarpamine et (+)-taberdivarine H." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS527.
Full textPleiocarpamine is a monoterpene indole alkaloid of the mavacuran family. The main interest of this natural product is its ability to assemble with various indole alkaloids to give structurally complex bisindoles with significant biological activities. Several strategies have been studied for the total synthesis of this pentacyclic compound. Especially, the ring contraction of a ketolactam was contemplated for E-ring formation. Unexpectedly, this strategy led to the first total synthesis of (–)-17-nor-excelsinisine, a zwitterionic alkaloid with antiviral activities. Simultaneously, this natural product was obtained via a bioinspired oxidative cyclization between the formylester and the aliphatic nitrogen atom of geissoschizine. Quaternarization of the latter allowed to guide the reaction chemoselectivity towards the indole nucleus. Therefore the oxidative coupling with the indolic nitrogen atom etablished the signature bond of the mavacurans. Thanks to this strategy, several alkaloids of this family: (+)-taberdivarine H, (+)-16-hydroxymethyl-pleiocarpamine and (+)-16-epi-pleiocarpamine, were synthetized. Subsequently, a racemic total synthesis of the latter was completed in only nine steps via a diastereoselective intermolecular 1,4 addition of a vinyl iodide into a tetracyclic indolylacrylate and a final D-ring closure by nucleophilic substitution. The development of an enantioselective version has been initiated. Finally, a study was performed for the assembly of pycnanthinine, a pleiocarpamine-derived bisindole
Chèze, 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 textAbaul-Lucrèce, Jacqueline. "Contribution à la connaissance chimique de deux Apocynacées antillaises : Tabernaemontana citrifolia L. et Rauvolfia biauriculata J. Müll : oligomères de l'indole, mode d'ouverture du cycle dihydroindole." Paris 11, 1988. http://www.theses.fr/1988PA112216.
Full textOtogo, n'nang Elvis. "Étude chimique et biologique de Gentianales gabonaises d’intérêt antipaludique, à alcaloïdes indolomonoterpéniques." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS039/document.
Full textThe chemical study of 11 Gabonese plant species, some being used in traditional medicine, was performed in search of antiplasmodial compounds with new structures. Two Apocynaceae (Pleiocarpa mutica Benth., Callichilia inaequalis Stapf) and a Gelsemiaceae (Mostuea brunonis Didr.) were more specifically investigated, using LC-MS/MS data in a dereplicative approach based on the “molecular networking” strategy, with an annotation performed using an “in-house” monoterpene indole alkaloids database (MIADB). This approach was used to guide the isolation of original alkaloids, in terms of substitution patterns or of linkage. From the stem bark of P. mutica, 7 previously undescribed bis-indoles were obtained: five are bis-aspidofractanes, four of them being linked by a methylene bridge (pleiokomenines A-D); Two are aspidofractane-eburnane dimers analogous to pleiomutine. The twigs and roots of C. inaequalis yielded 2 new bis-indoles analogous to criophylline, among which one is the first natural sulfate-bearing indole monoterpene. Inaequalisine A, the first monomeric indole monoterpene linked to a phenylpropene moiety by a C-C linkage was also obtained.The study of the twigs and leaves of M. brunonis lead to 4 new compounds: A monomeric sarpagine (16-epi-methylester-panarine) and 3 unknown bis-vobasines which constituting monomers are linked by a sulfide bridge (theionbrunonines A-C).Known compounds were also isolated, some of which were previously undescribed in the genera studied here. Several of the new molecules exhibited antiplasmodial in vitro activity in the micromolar range against a chloroquine-resistant strain of P. falciparum
Rakotoarivelo, Nambinina Vololomiarana. "Activités antipaludiques de séries chimiques à noyau indole et d'extraits naturels." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30147/document.
Full textThe problem of Plasmodium falciparum resistance to antimalarial drugs requires a continuous search for new active molecules. In this thesis, indolone series were pharmacomodulated and extraction of plants were made to find new active structures. The structural changes of indolone-N-oxide series (INOD) allowed a small improvement of solubility by substitution with aminochloride group, an antiplasmodial activity maintained by substitution with bulky groups at position 6, an antimalarial activity conserved when the nitrone function (O-N=C) is reduced giving the new series of 2-aryl-3H-indol-3-ones (IND). Comparable antimalarial activities were observed between the two series (INOD and IND). The compound 6-(4-chlorophenyl)-7H-[1,3]dioxolo[4,5-f]indol-7-one-5-oxide is the best lead now. To improve stability and biodisponibility of INOD in perspective, the substitution with bulky group at position 7 could slow their bioreductibiliy in vivo. Isoindolinones (clitocybins) don't have antimalarial activities (no antituberculosis activity also) and are highly cytotoxic. Extracts of Madagascan plant have antimalarial activity in vivo and promote the isolation of active alkaloids
Reyes, Loya David. "Etude synthétique de la koumine, réactions domino régiosélectives vers des lactones indoliques et synthèse totale de la (+/-)-goniomithine." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMR119.
Full textA synthetic study of koumine by a strategy based on a desymmetrization step led, through an unexpected result, to the development of a fragmentation of 1,3-cyclohexanediones into lactones. Following this result, a methodological study was carried out starting from different substituted diketones to synthesize indolic lactones, as well as to determine regioselectivity and diastereoselectivity. Finally, the total synthesis of goniomitine was performed using this fragmentation method
Foureau, Emilien. "Elucidation de la voie de biosynthèse des alcaloïdes de Catharanthus roseus et ingénierie métabolique dans la levure." Thesis, Tours, 2016. http://www.theses.fr/2016TOUR3805/document.
Full textCatharanthus roseus is a medicinal plant producing various types of monoterpene indole alkaloids (MIA) with a great interest in human health. Dimeric alkaloids such as vinblastine and vincristine are used in cancer chemotherapy and monomeric heteroyohimbine alkaloids exhibit various pharmacological activities. The production of these molecules in the plant is very complex. It requires a high level of tissular and subcellular compartmentalization and involves more than thirty enzymatic steps, some of which are largely unknown. In this context, the aim of this thesis was to elucidate several enzymatic steps of the MIA biosynthetic pathway. Our work allowed us to characterize new enzyme isoforms of cytochrome P450 and their associated reductases. They also resulted in the identification of new dehydrogenases and highlighted their interactions with the strictosidine synthase suggesting a directed biosynthesis towards various heteroyohimbine type of alkaloids. Finally, engineered yeast containing a segment of the MIA biosynthetic pathway was able to convert tabersonine into vindoline, one of the two final precursors of the dimeric alkaloids
Guirimand, Grégory. "Organisation cellulaire et subcellulaire de la voie de biosynthèse des alcaloïdes indoliques monoterpéniques de Catharantus roseus." Thesis, Tours, 2011. http://www.theses.fr/2011TOUR4014/document.
Full textCatharanthus roseus is a tropical plant from the Apocynaceae family with a great therapeutic value due to its ability to synthesize monoterpene indole alkaloids (MIA) used in cancer treatment. The yields of these molecules in planta are very low due to a very high level of compartmentation of the biosynthetic pathway at both cellular and subcellular levels. While the cellular compartmentation was widely characterized, very few in situ subcellular localization data were available at the beginning of this PhD. An accurate knowledge of this compartmentation is necessary to identify intermediate metabolites transport events from one compartment to another one, in order to increase the MIA biosynthesis yield by metabolic engineering approaches. In this context we have proceed to the exhaustive study of the subcellular localization of these enzymes by in vivo GFP imaging in C. roseus cells transformed by biolistic. Potential interprotein interactions of these enzymes have also been studied by BiFC. Altogether, our results enabled us to draw an integrated model of the cellular and subcellular organization of MIA biosynthesis in situ
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
Sor, Ano Agatón Flor Nadheisa. "Etude phytochimique de Zanthoxylum chiloperone var. Angustifolium. Synthèse et hémisynthèse d'alcaloïdes de type canthin-6-one. Synthèse et réactivité de nouveaux squelettes en série indolique." Paris 11, 2006. http://www.theses.fr/2006PA114814.
Full textThe alkaloids canthin-6-one, 5-methoxy-canthin-6-one and norchelerythrine, and the pyrocoumarines cis and trans-avicennol were extracted from steam bark of Zanthoxylum chiloperone var. Angustifolium (Rutaceae) collected in South America. Some canthin-6-one derivatives were prepared by hemisynthesis exploring the N-3 reactivity of the pyridine nitrogen. Other new derivatives were prepared from different tryptamines by an efficient new synthetic route (3 or 4 steps) in good yields. This work has prompted us to explore the reactivity of some indole derivatives particulary in cycloaddition reactions. An original β-amination reaction using sodium azide and a metallic salt has been developed. This one pot reaction enabled the preparation of different compounds from natural substrates presenting an αβ-unsaturated carbonyl function
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
Ginis, Olivia. "Identification de facteurs de transcription régulateurs de la voie de biosynthèse des alcaloïdes indoliques monoterpéniques chez Catharanthus roseus." Thesis, Tours, 2012. http://www.theses.fr/2012TOUR4014/document.
Full textCatharanthus roseus is a tropical plant producing specifically monoterpene indole alkaloids (MIA) of high interest due to their therapeutical values. In C. roseus cells, the terpenoid branch including the methyl erythritol phosphate pathway (MEP) provides the MIA terpenoid moiety and is regarded as limited for MIA biosynthesis. This branch presents a coordinated transcriptional regulation in response to hormonal signals leading to MIA production. In this context, bioinformatic analysises and functional characterization of MEP pathway gene promoters allowed the identification of new transcription factor families involved in the MIA pathway regulation. Members of ZCT proteins, WRKY and type B RR families specifically interact with the hds promoter from the MEP pathway and regulate its activity. This work permits to gain into insight the transcriptional network controlling the MIA biosynthesis. It is possible now to consider using transcription factor that act as activators and target genes from the terpenoid branch to increase the accumulation of alkaloids of pharmaceutical interest in C. roseus by metabolic engineering approaches
Fox, ramos Alexander. "Exploration de la diversité chimique des Apocynaceae par la technique des réseaux moléculaires : de la création d’une base de données vers l’annotation in silico." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS543/document.
Full textMonoterpene indole alkaloids (MIAs) constitute a class of natural products that has been extensively studied due to its important pharmacological and therapeutic potentials, and to its large structural diversity. Dereplication techniques based on liquid chromatography coupled to tandem mass spectrometry have recently evolved, with the implementation of molecular networking-based approaches.In this context, we have created a spectral database that encompasses the averaged tandem mass spectra of 172 reference MIAs, in collaboration with several pharmacognosy research teams around the world. This database, named MIADB (standing for Monoterpene Indole Alkaloids DataBase), was made publicly available and can be used as a reference in the application of molecular networking as a dereplication strategy. Thereafter, we used the MIADB to carry out the phytochemical investigation of two Apocynaceae species: Geissospermum laeve (Vell.) Miers and Alstonia balansae Guillaumin. As a first application, the MIADB-based annotation of an alkaloid extract of the barks of G. laeve led to the isolation and the structural elucidation of three new MIAs, two having a butyrolactone moiety. Afterwards, this approach was improved by the application of a new tool for in silico annotation called MetWork, which is based on metabolic prediction and on the generation of predicted tandem mass spectra. Following this approach, the exploration of the chemical space of an alkaloid extract of the leaves of A. balansae allowed the anticipation and further isolation of five novel MIAs of the N-oxide-sarpagine type. The stereochemistry of all the new molecules could be determined on the basis of experimental and predicted electronic circular dichroism spectra.In the introduction of this manuscript the multiple uses of molecular networking for the identification of small natural molecules are described, as well as the biosynthetic interconnections in the MIAs group. The creation and evolution of the MIADB are then presented, followed by its utilization in efficient dereplication workflows for the targeting of new natural products within complex mixtures from Apocynaceae species
Dawood, Dawood Hosni. "Towards the synthesis of monoterpenoids indole alkaloids of the aspidospermatan and strychnan type." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14155/document.
Full textThe aim of this work was to access the skeleton of the Aspidosperma and the Strychnos alkaloids using arylcyclohexa-2,5-dienes as common synthetic precursors. Initially, these arylcyclohexadienes were synthesized through Birch reductive alkylation reactions. The desymmetrization of these cyclohexadienes was developed via the Michael addition reaction, providing the Büchi ketone, the tetracyclic core of Aspidosperma alkaloids, in only 6 steps and 17% overall yield. On the other hand, we described the oxidative amination reaction catalyzed by metals (Pd, Cu). The palladium oxidative amination reaction allowed a fast access to the pentacyclic framework of aza-aspidospermanes and the tetracyclic framework of the strychnos. In parallel, we have described an approach toward the pentacyclic skeleton of mossambine and strychnine
Chopin, 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
Martin, Nicolas Joseph. "Approche génétique et chimique de deux espèces endémiques de Polynésie française : terminalia glabrata et Rauvolfia nukuhivensis." Thesis, Polynésie française, 2014. http://www.theses.fr/2014POLF0003.
Full textTerminalia glabrata and Rauvolfia nukuhivensis are endangered Polynesian plant species and endemic. T. glabrata co-exists with a common species from the Pacific T. catappa, thus contributing to its vulnerability by interfertility. R nukuhivensis endures regeneration issues due to climate stress, predation and overexploitation. Hence, these species have been classified as protected species by the authorities and are subjected to conservation plans. Because of their heritage value and their traditional uses, they represent species of cultural importance for the country. Genetics and chemistry approaches were conducted for this study. Concerning T. glabrata, barcoding assays established great similarity with T. catappa. Metabolomics data showed infraspecific variability. Phylogenetic data of Rauvolfia species are consistent with their biogeography, and revealed the existence of an only group of individuals from Nuku Hiva and Ua Huka. Genetic diversity is linked to phytochemical occurence. Investigation of R. nukuhivensis bark metabolites and the traditional remedy led to identification of 13 isolated compounds within 8 new ones, belonging to the ajmalan, sarpagan, macroline and β-carboline skeleton. The co-occurrence of these alkaloid skeletons led to establish an unprecedented biosynthesis route. Finally, isolated compounds and the traditional remedy were submitted to bioassays. The traditional remedy induced cell proliferation and wound healing activities on FHN cells and ion channels Kv11.1 were strongly inhibited by
Arzel, Erwan. "Delta-carbolines et benzo-delta-carbolines : nouvelle voie d'accès via la métallation isomérisante." Rouen, 1999. http://www.theses.fr/1999ROUES082.
Full textChebbi, Mouadh. "Implication de facteurs de transcription de type doigt de zinc et de la famille des WRKY dans la régulation de la voie du MEP et de la biosynthèse des alcaloïdes indoliques monoterpéniques de Catharanthus roseus." Thesis, Tours, 2015. http://www.theses.fr/2015TOUR3801/document.
Full textMonoterpene indole alkaloids (MIA) are molecules with anti-cancer properties from Catharanthus roseus. Their production cost and the important need in chemiotherapy make them major targets for the research of more efficient production strategies. The aim of this work is to identify new transcription factors (TF) that regulate MIA production. This study focuses especially on the functional characterization and the involvement in the MIA biosynthesis regulation, of proteins previously isolated in the EA2106 “Plant Biocompounds and Biotechnology” laboratory: 3 proteins that belong to the WRKY family (CrWRKYs) and 3 zinc finger proteins named ZCTs. Our experiments revealed that among them, CrWRKY22, CrWRKY32, ZCT1 and ZCT2 act as transcription factors and more specifically interact with the promoter of Crhds gene. Crhds encodes an enzyme of the methyl erythritol phosphate (MEP) pathway that is considered as limiting for MIA production. Our work allowed identifying new TFs targeting the MEP pathway those regulation through TFs is mostly unknown. Using such transcription factors in metabolic engineering could be now considered increasing MIA production by the modulation of terpenoid flux in C. roseus
Randriambola, Lygie. "Étude chimique des alcaloïdes des deux genres monospécifiques malgaches : Craspidospermum et Gonioma (Apocynacées)." Paris 11, 1987. http://www.theses.fr/1987PA112018.
Full textThe first part of this work deals with the structure determination of the alkaloids of Craspidospernum verticillatum variety petiolare. Among the twelve alkaloids that have been isolated eight are known monomers, the ninth one is new and the constitution of the remaining three compounds was established as new bis indole type alkaloids of the series aspidosperman-eburnan. In the second part we study the alkaloids constituants of Gonioma Malagasy. Two of the sixteen alkaloids isolated, the goniomine and the goniomitine represent totally new skeletons
Denizot, Natacha. "Couplages oxydants entre indoles et phénols pour la synthèse de benzofuroindolines naturelles." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS147/document.
Full textThe benzofuro[2,3-b]indoline core is a complex structure present in several natural products such as azonazine, voacalgine A, bipleiophylline and diazonamide A. These products possess an interesting biological activity and especially diazonamide A with an IC50 below 15ng/mL on different cancer cells lines. Some of these compounds have never been synthesize. It is postulated that the biogenesis of the benzofuroindolines natural products implies an oxidative coupling between indoles and phenols. Therefore, we wished to develop a bioinspired synthesis of benzofuroindoline core.Inspired by the biosynthesis of azonazine and diazonamide A, we developed an diastereodivergent arylation of tryptophan by tyrosine. The existing synthetic methodology of benzofuroindoline involving an oxidative coupling do not allow a stereoselective control. We solved this problem by doing a Friedel-Crafts reaction between a protected tyrosine and the exo-, and endo-bromopyrroloindolines obtained stereoselectively from tryptophan. This reaction witch proceeds with a retention of configuration allowed us to access selectively azonazine and diazonamide A precursors. A general methodology of benzofuroindoline synthesis by an oxidative coupling between 2,3-disubstituted indoles and phenols has then been developed. This reaction proceeds by oxidation of the indole with N-iodosuccinimide. The resulting iodoindoline was then engaged in a Friedel-Crafts reaction with a phenol in presence of a silver salt to form the desired benzofuroindoline in a one-pot operation. Through this method, a library of several benzofuroindolines has been created.This last methodology has been applied to the synthesis of complex hexacyclic voacalgine A and bipleiophylline analogs from pleiocarpamine-like indoles. Another strategy towards the voacalgine A and bipleiophylline benzofuroindoline core has also been studied and involves the oxidation of a catechol into an orthoquinone which can react with an indole
Cebrian-Torrejon, Gerardo. "Phytochimie de Zanthoxylum chiloperone var. angustifolium (Rutaceae). Chimie et pharmacochimie de la canthin-6-one." Thesis, Paris 11, 2011. http://www.theses.fr/2011PA114844/document.
Full textThe alkaloids canthin-6-one, 5-methoxy-canthin-6-one and canthin-6-one Noxide,as well as the alkylamide sanshool and three known coumarines were identified and quantified from stem bark, leaves (in this case an annual analysis was conducted), fruits and roots of Zanthoxylum chiloperone var. angustifolium (Rutaceae) collected in South America. Some canthin-6-one derivates were prepared by hemisynthesis by exploring the N-3 reactivity of the pyridine nitrogen. Other new derivates were prepared from different tryptamines and some functionalized anhydrides by an efficient new synthetic route (3 or 4 steps) in good overall yields. The biosynthetic pathway of the canthin-6-one was also chemically explored.Furthermore, this work has prompted us to explore the reactivity of some prenylated derivates of canthin-6-one and serotonin. The antitubercular activity, the antiproliferative activity on cancer stem cells and several antiparasitic activities (Chagas disease, malaria, nematicidal activity) were studied and various mechanisms of action proposed. Finally, an original study of the electrochemical behaviour of canthinones has been investigated and a pharmaceutical formulation was achieved
Ferroud, Clotilde. "Étude de la réaction de Diels-Adler intra et intermoléculaire sous haute pression : application à la synthèse stéréosélective d'alcaloïdes de l'indole du groupe des yohimbanes." Paris 6, 1986. http://www.theses.fr/1986PA066023.
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