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Dissertations / Theses on the topic 'Diazonamid'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Radspieler, Alexander. "Untersuchungen zur Synthese von Diazonamid A und Phorbazol A und C." Doctoral thesis, [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=960868712.

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2

Radspieler, Alexander [Verfasser], H. G. [Gutachter] Schmalz, Jürgen [Gutachter] Liebscher, and U. [Gutachter] Koert. "Untersuchungen zur Synthese von Diazonamid A und Phorbazol A und C / Alexander Radspieler ; Gutachter: H.-G. Schmalz, Jürgen Liebscher, U. Koert." Berlin : Humboldt-Universität zu Berlin, 2000. http://d-nb.info/120766801X/34.

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3

Kreisberg, Jennifer Diane. "Studies directed towards the total synthesis of the natural product diazonamide A." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3037513.

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4

Hind, Sarah Lucy. "Synthetic approaches to diazonamide A." Thesis, University of Exeter, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245947.

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5

David, Nadege. "Towards the synthesis of diazonamide A." Thesis, University of Nottingham, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.582017.

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This thesis describes a new approach towards a formal synthesis of the marine natural product diazonamide A. Firstly, the biological anti-cancer activity of diazonamide A is explained. The investigations towards the synthesis of the C-10 quaternary centre by numerous laboratories are then reported, as well as the successful total and formal syntheses. Secondly, our strategy is presented. One of the difficulties of the synthesis is the generation of the quaternary centre at C-10. This project aims to construct this stereocentre based on a novel strategy, involving the synthesis of a 3,3- disubs

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6

Sammons, Matthew F. "Studies directed toward the synthesis of diazonamide A." Connect to online resource, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3337224.

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7

Meyer, Falco-Magnus. "Studies towards the total synthesis of diazonamide A." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608416.

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8

Churchill, Gwydion H. "Synthetic studies towards the marine natural product diazonamide A." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423661.

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9

Green, Clive P. "Synthetic studies towards the cytotoxic marine natural product diazonamide A." Thesis, University of Nottingham, 1999. http://eprints.nottingham.ac.uk/13863/.

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The thesis describes synthetic studies towards the marine natural product diazonamide A. This unprecedented compound was recently isolated from a colonial ascidian and displays exceptional levels of cytotoxic activity against human cancer cell lines. The Introduction includes an account of how diazonamide A was isolated and its structure determined. This is followed by a summary of the different natural products which have been isolated from ascidians, and highlights the structural similarities between these compounds and diazonamide A. The Introduction concludes with a review of structurally

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10

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.

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Le noyau benzofuro[2,3-b]indoline est une structure complexe que l’on retrouve dans différentes substances naturelles telles que l’azonazine, la voacalgine A, la bipleiophylline ou encore le diazonamide A. Ces produits naturels possèdent une activité biologique intéressante et plus particulièrement le diazonamide A avec un IC50 inférieur à 15ng/mL sur plusieurs lignées cellulaires cancéreuses. De plus, certaines de ces substances n’ont jamais été synthétisées à ce jour. Lors de la biogénèse de ces composés, il est supposé que le motif benzofuroindoline est créé par un couplage oxydant entre un

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11

Ling, Matthew. "Studies towards the total synthesis of the marine metabolite diazonamide A." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243405.

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12

Coqueron, Pierre-Yves. "Nouvelle méthodologie de synthèse d'oxazoles : application à la synthèse formelle de la (-) muscoride A et à l'étude synthétique de la diazonamide B." Lyon 1, 2001. http://www.theses.fr/2001LYO10219.

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Ce travail de thèse a consisté à mettre au point une nouvelle méthodologie de synthèse d'oxazoles. Elle repose sur la réaction entre un "-chloro-glycinate et un alcynure de diméthylaluminium. L'intérêt de cette nouvelle technique repose sur sa simplicité, son efficacité et non itérativité : sa simplicité, parce que nous avons su l'appliquer à la synthèse parallèle en phase liquide. Nous avons ainsi synthétisé deux banques d'oxazoles dont l'activité biologique est testée chez Aventis CropScience ; sa robustesse, parce que nous pouvons aisément opérer des synthèses multi-grammes d'oxazoles ; et

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13

Beaud, Rodolphe. "Hydroarylation régiosélective d’indoles pour l’accès aux motifs 3 - arylindolines : études et applications d’une nouvelle réactivité de l’indole." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112308/document.

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Le diazonamide A, molécule naturelle extraite d’une ascidie marine, présente une activité antitumorale très importante (IC₅₀ < 5 nM) selon un mode d’action tout à fait original. Des études ont en effet prouvé que cette molécule inhibait une enzyme, l’Ornithine-d-aminotransferase, intervenant dans la réplication cellulaire des cellules cancéreuses faisant d’elle un poison du fuseau mitotique très sélectif. Cette molécule présente en son sein un cœur benzofuroindoline qui serait issu, d’un point de vue biogénétique, d’un couplage oxydant entre un noyau indole et un noyau phénol. Afin de dével

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14

Gerstenberger, Brian Stephen. "Progress towards the total synthesis of diazonamide A and related new methodology /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2007. http://uclibs.org/PID/11984.

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15

Shen, Lan. "Studies directed toward the syntheses of cyathins and diazonamides /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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16

Mangion, Ian Kyle Stoltz Brian M. "Development of organocatalytic direct aldol transformations, total syntheses of brasoside and littoralisone, and progress toward the total synthesis of diazonamide A /." Diss., Pasadena, Calif. : Caltech, 2006. http://resolver.caltech.edu/CaltechETD:etd-05232006-210214.

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17

McKinnell, Robert Murray. "Part 1: lanthanide triflates and triflides as recyclable catalysts in organic chemistry : part 2: a formal total synthesis of elaiophylin; part 3: studies towards the total synthesis of diazonamide A." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312376.

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18

Lin, Jinzhen. "I. Stereoselectivity in formation of quaternary center with aryllead(IV) triacetate reagents ; II. Synthesis of the aefg-macrolactam portion of diazonamide A: highly stereoselective formation of key C10 chiral center via aryllead(IV) reagents /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2005. http://uclibs.org/PID/11984.

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19

Tomakinian, Terry. "Nouvelles méthodes de synthèse de benzofuroindolines. Vers la synthèse de la phalarine." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS031.

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Les benzofuroindolines forment une famille de composés qui se retrouvent sous deux formes : les benzofuro[2,3-b]indolines ou les benzofuro[3,2-b]indolines. Ce motif se retrouve dans de nombreuses molécules naturelles comme la bipleiophylline, la voacalgine A, le diazonamide A et la phalarine ce qui a mené à de nombreuses recherches pour leur synthèse. La biogénèse postulée est le couplage oxydant d'un indole et d'un phénol. Nous avons développé plusieurs voies d'accès à ces motifs en utilisant le noyau indolique. La première étude a consisté en un couplage oxydant direct entre un N-acétylindol

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20

Radspieler, Alexander [Verfasser]. "Untersuchungen zur Synthese von Diazonamid A und Phorbazol A und C / von Alexander Radspieler." 2000. http://d-nb.info/960868712/34.

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21

Wang, Jiabing. "Studies toward the asymmetric synthesis of diazonamide A." 1997. http://catalog.hathitrust.org/api/volumes/oclc/39654340.html.

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22

Burgett, Anthony W. G. "Synthesis and molecular pharmacology of the diazonamides." 2006. http://www4.utsouthwestern.edu/library/ETD/etdDetails.cfm?etdID=209.

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23

Knowles, Robert Randolph. "Asymmetric Organocatalysis in Complex Target Synthesis: Progress Towards the Total Synthesis of Diazonamide A." Thesis, 2009. https://thesis.library.caltech.edu/4288/1/rknowles.pdf.

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<p>Progress towards the total synthesis of the marine natural product diazonamide A is described. The synthesis was conceived around an iminium-catalyzed alkylation/cyclization cascade that stereoselectively installs the central C(10) quaternary carbon stereocenter and the complete furanoindoline core of the natural product in an asymmetric, organocatalytic manner. The manner in which this idea was brought to bear is illustrated, with the remainder of the work focused on devising and executing strategies toward the synthesis of the two twelve-membered macrocycles of the target structure. Consi

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24

Vidulova, Daniela Boneva. "Studies toward the synthesis of EFGH ring system diazonamide A Pummerer chemistry applied toward the synthesis of 3,3-spirocyclic oxindoles." 2005. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-746/index.html.

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25

Mangion, Ian Kyle. "Development of Organocatalytic Direct Aldol Transformations, Total Syntheses of Brasoside and Littoralisone, and Progress Toward the Total Synthesis of Diazonamide A." Thesis, 2006. https://thesis.library.caltech.edu/1981/1/IKMthesisedit.pdf.

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<p>The enantioselective amine-catalyzed direct aldol reaction of aldehdyes has been accomplished for the first time using an imidazolidinone organocatalyst. That imidazolidinone catalyst, initially developed for LUMO-lowering activation of alpha, beta-unsaturated aldehydes, provides new insight into amine-mediated aldol transition states. The concepts developed in this study have been applied toward the development of an unprecedented enantioselective Type II direct aldol. In the course of these studies the amino acid proline was also found to be a highly effective catalyst for this transfo

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26

Eastman, Kyle Joseph. "Part I. Studies toward the synthesis of diazonamide A. : Part II. A proposal for the mechanism-of-action of diazoparaquinone natural products and studies toward the synthesis of kinmycin F /." 2006. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-1539/index.html.

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