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Dissertations / Theses on the topic 'Lactones'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Wheatley, Joseph R. "Lactones in synthesis." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337424.

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2

Shangula, Suha. "Effect of paraoxonase (PON1) on lactones and ROS induced DNA damage." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/effect-of-paraoxonase-pon1-on-lactones-and-ros-induced-dna-damage(928ac761-7039-4f6f-9135-40a6f71b9465).html.

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Paraoxonase 1 (PON1) is an enzyme synthesised in the liver that is associated with High Density Lipoprotein (HDL) and increasingly with a number of human diseases, including cardiovascular disease and cancer. PON1 is (i) a lactonase, hydrolysing aliphatic and aromatic lactones, (ii) a phosphotriesterase, acting on certain organophosphates and (iii) a peroxidase that combats lipid oxidation. The aim of this study was to investigate the extent to which PON1 might impact on the levels of lactone-induced and oxidative DNA damage. Initially, the plasmid DNA (pDNA) nicking assay was used to show tha

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3

Arasa, Bertomeu Mª Mercè. "Nous termoestables epoxídics modificats amb gamma-lactones i bis-gamma-lactones condensades." Doctoral thesis, Universitat Rovira i Virgili, 2009. http://hdl.handle.net/10803/9033.

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Aquest treball s'emmarca en el camp dels materials termoestables amb aplicacions en recobriments o encapsulants per microelectrònica i pretén l'obtenció de materials amb millor durabilitat i que després del temps d'ús puguin ser degradats i permetin la recuperació del material electrònic, el que constitueix una gran avantatja des del punt de vista mediambiental. L'estratègia escollida ha estat la copolimerització de diglicidilèter de bisfenol A (DGEBA) amb mono--lactones i bis--lactones utilitzant diversos triflats de terres rares i el BF3·MEA com iniciadors catiònics i varies

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4

Fairbanks, Antony J. "Sugar lactones in synthesis." Thesis, University of Oxford, 1993. http://ora.ox.ac.uk/objects/uuid:44329487-5d08-4df4-8baf-fc682d4bc9cc.

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This thesis describes the synthesis of some novel carbohydrate lactones and their uses as starting materials in (a) the syntheses of various polyfunctionalised cyclopentanes, via intramolecular aldol condensations, (b) the synthesis of 1-epihydantocidin, in which the crucial synthetic step involves a novel transformation induced by tetra-n-propylammonium perruthenate, and (c) the syntheses of various tetrahydrofurans and tetrahydropyrans. The syntheses of 3,4-O-isopropylidene and cyclohexylidene altrono and allono-1,5-lactones via Kiliani ascension of protected forms of D-ribose are described.

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5

Maughan, K. "Grignard reactions with lactones." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356029.

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6

Mitchell, Helen Joy. "Stereocontrol with diphenylphosphinoyl lactones." Thesis, University of Cambridge, 1995. https://www.repository.cam.ac.uk/handle/1810/271942.

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7

Rogers, Paul S. "Sugar lactones in organic synthesis." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425897.

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8

Simone, Michela A. "Studies on branched sugar lactones." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497098.

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9

Toczek, Judy. "Synthetic studies on terpenoid lactones." Thesis, Brunel University, 1985. http://bura.brunel.ac.uk/handle/2438/7401.

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A novel stereoselective route has been developed to a vernolepin intermediate in nine steps from 2-phenylthiocyclopentenone. During this research, a regiospecific method for the alkylation of the Δ5,6 - tetrahydroindanone system has been achieved. In addition, the synthetic route demonstrates a means of differentiating between two carboxylic acid functions via a selective lactonisation. The first total ynthesis of boonein has also been completed, in 3% yield from cyclopentadiene. This route uses a chlorine atom to direct the stereo- and regiochemical outcome of most of these reaction.

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10

Dumeunier, Raphaël. "New methodologies towards lactones and methylene-lactones : application to the total synthesis of Polycavernoside A." Université catholique de Louvain, 2004. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-05242004-130732/.

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Methylene-butyrolactones are readily accessed by two methodologies based on a particular ene reaction. Both methodologies have been applied to the synthesis of the northern fragment of Polycavernoside. A reverse Julia reaction was used as the key step of a new methodology towards triene frameworks ; a mechanistic study revealed the unexpected role of triflic acid in the field of metal triflates catalysed acylation of alcohols, and a new tandem Brook rearrangement-allylation sequence was developed in the viewpoint of an improved total synthesis of Polycavernoside A.

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11

Fouque, Elie. "Synthèse itérative de lactones α, β-ethyléniques à cycle moyen : hydrolyse enzymatique de lactones saturées". Paris 11, 1989. http://www.theses.fr/1989PA112246.

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Dans ce mémoire de thèse, nous proposons une nouvelle voie d'accès aux lactones alpha, bêta-éthyléniques à cycle moyen par une méthode d'agrandissement de cycle, qui, utilisée de façon récurrente permet à chaque itération d'incorporer dans le squelette laconique un atome de carbone porteur ou non d'un substituant. Dans le premier chapitre, après un exposé concernant la préparation des éthers d'énols triméthylsilyliques de lactones, nous étudions la réaction de ces énoxysilanes avec trois chlorocarbénoïdes différents. Les adduits cyclopropaniques ainsi obtenus, conduisent thermiquement aux lact

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12

Wilstermann, Michael. "Synthesis of conformationally restricted oligosaccharides." Lund : Dept. of Organic Chemistry 2, Lund University, 1997. http://catalog.hathitrust.org/api/volumes/oclc/39751534.html.

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13

Prata, Camila Barbieri [UNESP]. "Aspectos do controle de resíduos de avermectinas no abate de bovinos." Universidade Estadual Paulista (UNESP), 2014. http://hdl.handle.net/11449/122080.

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Made available in DSpace on 2015-04-09T12:28:20Z (GMT). No. of bitstreams: 0 Previous issue date: 2014-06-09Bitstream added on 2015-04-09T12:47:39Z : No. of bitstreams: 1 000816587.pdf: 400325 bytes, checksum: fe57a4f95b8cfd93f1cdf6d5195f67d6 (MD5)<br>As mudanças nos controles internacionais dos alimentos visando sua inocuidade se efetivaram com a mudança de século, tendo como base a Análise de Riscos e a Análise de Perigos e Pontos Críticos de Controle. Para os resíduos químicos, apesar de problema pré-existente, a situação só ganhou notoriedade a partir de 2010 com a detecção da presença d

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14

Prata, Camila Barbieri. "Aspectos do controle de resíduos de avermectinas no abate de bovinos /." Jaboticabal, 2014. http://hdl.handle.net/11449/122080.

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Orientador: Adolorata Aparecida Bianco Carvalho<br>Banca: Ana Maria Centola Vidal Martins<br>Banca: Estevam Guilherme Lux Hoppe<br>Banca: Paulo Sérgio Jorge<br>Banca: Fabio Fernando Ribeiro Manhoso<br>Resumo: As mudanças nos controles internacionais dos alimentos visando sua inocuidade se efetivaram com a mudança de século, tendo como base a Análise de Riscos e a Análise de Perigos e Pontos Críticos de Controle. Para os resíduos químicos, apesar de problema pré-existente, a situação só ganhou notoriedade a partir de 2010 com a detecção da presença de resíduos de avermectinas em produtos cárneo

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15

Serba, Christelle. "Nouvelles approches vers les lactones sesquiterpéniques." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF017/document.

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Cette thèse développe de nouvelles séquences réactionnelles divergentes vers les lactones sesquiterpéniques, ainsi que leurs analogues. La réactivité multiple d’un substrat linéaire face à divers catalyseurs a tout d’abord permis d’obtenir différentes structures polycyliques dont la fonctionnalisation a permis d’isoler plusieurs produits naturels et des analogues. De nouvelles méthodologies ont été étudiées pour accéder aux gamma-butyrolactones, une fonctionnalité prépondérante dans les lactones sesquiterpéniques, ainsi qu’au noyau hydroazulène contenu dans les guaianes. Enfin, une synthèse di

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16

Wright, Edward Andrew. "π-Allyltricarbonyliron lactones in asymmetric synthesis". Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621938.

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17

Ounsworth, James Paul. "Synthesis of [beta]-keto lactones and the synthetic consequences of the conformational preferences of 14-membered lactones." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25954.

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The preparation of the β-keto lactones 1̲9̲ via intramolecular alcoholysis of hydroxy Meldrum's acid derivatives was examined. Good yields of the 6- and 14-membered compounds were obtained, but the method was completely unsuccessful for medium-size rings. An investigation was conducted on the conformational preference of substituted 14-merabered lactones with a view to understanding the stereochemical consequences of the reactions of these compounds. The conformational preferences of simple 14-membered cyclic compounds were first determined. These preferences are described in terms of steric

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18

Mas, Quilez Cristina. "Modificació química de reïnes epoxi amb lactones." Doctoral thesis, Universitat Rovira i Virgili, 2004. http://hdl.handle.net/10803/8994.

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Les reïnes epoxi són monòmers àmpliament utilitzats degut a les bones propietats que s'obtenen una vegada que el material està curat. El procés d'entrecreuament d'aquests monòmers presenta alguns problemes. Durant el procés de curat té lloc una disminució del volum o contracció que dóna lloc a l'aparició de porus i esquerdes i per tant un empitjorament de les propietats mecàniques i de la capacitat de recobriment. Altres problemes associats a aquests materials és la fragilitat i la no degradabilitat, sent aquest últim un greu inconvenient des del punt de vista medioambiental.<br/>L'objectiu d'

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19

Yu, Hongping. "Conformationally controlled reactions of 14-membered lactones." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0015/NQ56651.pdf.

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20

Harrison, J. R. "Exploration of 8-membered lactones in synthesis." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603775.

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This dissertation details the synthesis of a range of 8-membered lacones <I>via</I> a Claisen rearrangement route and also efforts towards the synthesis of 8-membered lactones by a new radical cyclisation strategy. Chapter One reviews the effect of substituents on the rates and stereoselectivities of Claisen rearrangements. Chapter Two describes the synthesis of 8-membered lactones, such as 2.43d, 2.109 and 2.85 by Claisen rearrangement methodology. Potential application of this methodology to the synthesis of the immunosuppressant discodermolide is also discussed. (Fig. 3864A) Chapter Three r

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21

Dyke, H. J. "Synthetic studies towards Stemofoline and bicyclic lactones." Thesis, University of Southampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356689.

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22

Rabiller, Christine. "Nouvelles voies de synthèse de lactones bioactives." Nancy 1, 1994. http://www.theses.fr/1994NAN10339.

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La synthèse enantiospécifique de lactones bioactives, inhibitrices d'une part de l'hmgcoa réductase, et d'autre part des lipases pancréatiques a été entreprise. Dans une première partie, l'accès facile et rapide à des composés de structure didesoxy-2-4-hexopyranose, chiron clé pour la synthèse d'inhibiteurs de la biosynthèse du cholestérol, a été réalisé par transformation stéréospécifique du 1,6-anhydro-beta-d-glucopyranose obtenu par pyrolyse dans de bonnes conditions qui ont été mises au point dans ce travail. Dans la deuxième partie, l'application des méthodes de création de liaison carbon

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23

Gore, Sophie. "Transannular Claisen rearrangements of α-sulfonyl lactones". Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/7827.

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This thesis is divided into three sections. Section one is a review of transannular pericyclic reactions. It covers the four main types of pericyclic reaction and major contributions in the field to date. Recent applications of these reactions to natural product synthesis are also included. Section two discusses the results of research efforts into transannular Claisen rearrangements of α-sulfonyl lactones. The background to the project is discussed along with initial investigations into the transannular Claisen and decarboxylative Claisen rearrangements (dCr) of the 7-membered ?-tosyl lactone

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24

Deshpande, N. R. "Studies in sequiterpenic lactones and related products." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Poona, 2018. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3897.

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25

Metay, Estelle Nedelec Jean-Yves. "Méthodologie d'accès à des benzolactones de taille moyenne." Créteil : Université de Paris-Val-de-Marne, 2005. http://doxa.scd.univ-paris12.fr:80/theses/th0228183.pdf.

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26

Schorr, Karin. "Smallanthus sonchifolius (Asteraceae): estudo fitoquímico, controle de qualidade e ensaios biológicos." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-22072005-102725/.

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Esta tese de doutorado aborda alguns aspectos do estudo de plantas medicinais e de princípios ativos naturais. Os procedimentos experimentais incluíram o estudo fitoquímico de uma planta medicinal da família Asteraceae, o desenvolvimento de um método analítico com validação das análises empregadas e o estudo de atividades biológicas relativas ao processo inflamatório. A primeira etapa compreendeu o estudo fitoquímico da planta medicinal Smallanthus sonchifolius (Asteraceae), envolvendo o isolamento de metabólitos secundários da classe dos terpenóides. Do extrato de lavagem foliar foram isolad

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27

Haudecoeur, Elise. "Signalisation quorum-sensing au cours de l'interaction Agrobacterium tumefaciens C58-plante hôte : régulation et fonctions des lactonases AttM et AiiB." Paris 11, 2008. http://www.theses.fr/2008PA112369.

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La bactérie phytopathogène Agrobacterium tumefaciens est l'agent responsable de la galle du collet, maladie touchant de nombreuses plantes d'intérêt agronomique. Tout au long du cycle de pathogénie, des échanges de signaux entre les deux partenaires ont des conséquences directes sur les processus de régulation génique et d'apparition des tumeurs chez les végétaux, ainsi que sur ceux de régulation génique et de dynamique des populations, chez les bactéries. La réplication et la dissémination du plasmide Ti, élément génétique associé au pouvoir pathogène d'A. Tumefaciens, sont sous le contrôle d

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28

Reather, James Andrew. "Late steps in the biosynthesis of macrocyclic lactones." Thesis, University of Cambridge, 2000. https://www.repository.cam.ac.uk/handle/1810/251730.

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29

Leslie, Ray. "Synthesis and reactions of unsaturated 14-membered lactones." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30016.

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Via a lactonization of the open chain hydroxy acid, the 14-membered unsaturated lactones 14 and 15 were synthesised. Treatment of these two lactones with borane dimethylsulphide, disiamyl borane and 9BBN led to formationof hydroxy lactones 30, 31, 32 and 33. The structures of 31 and 32 were determined by comparison with known compounds whereas structures 30 and 33 were deduced by considering the transition structures of the hydroboration reaction. Although both the regio and the stereoselectivity of the reactions were poor the π-face selectivity was high. Product distributions were estimated b

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30

Maurice, Joseph Roger Luc. "Synthesis and reactivity of 14-membered keto lactones." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/31129.

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A convergent synthesis using dithiane alkylations to produce a long chain hydroxy acid, and subsequent macrolactonization of the latter, yielded the 14-membered macrolides 47 and 58. [ Formulas omitted ] Alkylation of 47 with methyl iodide gave a diastereomeric product mixture of α-methylated lactones with the major product having the 2R*,13S* stereochemistry (71). The product ratio was explained by using low energy starting material conformations combined with MM2 calculations. Alkylation of 58 in the same manner also yielded a mixture with the major product h

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31

Edwards, M. I. "Asymmetric synthesis of lignan lactones from meso compounds." Thesis, Swansea University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636768.

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The purpose of this research was to form (2S, 3R)-2,3bis(3,4-dimethoxybenzyl) butyrolactone. A brief review of the main classes of lignans, their biosynthesis, biological activity and clinical utility is given in the first chapter. The main chemical synthesis routes to such compounds are also provided covering the six most commonly used routes including the Stobbe condensation. An overview of the use of <I>meso</I> compounds for the production of chiral synthons and use of the '<I>meso</I> <I>trick</I>' to enhance yields during chiral induction to <I>meso</I> substrates are discussed in chapte

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32

Murphy, Alison. "Lactones en route to altohyrtin A and tetrahydrolipstatin." Thesis, University of Liverpool, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243211.

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33

Sandey, Helen Jane. "Biotransformations of bicyclic ketones to lactones by microorganisms." Thesis, University of Exeter, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293978.

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34

Tang, Andrew. "Synthetic methodology towards the synthesis of sesquiterpene lactones." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612321.

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35

O'Sullivan, Paul Thomas. "Natural product systems from eight-membered ring lactones." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621632.

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36

Lakhrissi, Mohammed. "Dichloromethylenation de lactones et d'esters : synthèse et réactivité." Nancy 1, 1993. http://www.theses.fr/1993NAN10176.

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La dichloromethylenation des lactones et d'esters a été mise au point par l'utilisation d'un nouveau système de réactifs: triphenylphosphine-tetrachlorure de carbone. Ce système permet de transformer les lactones en présence des groupements o-benzyl, o-methylmethylether et d'esters encombres comme les pivaloyles et 4-phenylbenzoyles. Les nouvelles conditions que nous avons mises au point permettent la transformation des lactones -1,4; 1,5 et des acétates. Le motif dichloromethylene se prête bien à des transformations chimiques telles que la réduction, la chloration, la coupure oxydante ainsi q

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37

Harmange, Jean-Christophe. "Synthèse totale énantiosélective d'acétogénines d'Annonacées (gamma-lactones monotétrahydroguraniques)." Paris 11, 1992. http://www.theses.fr/1992PA114840.

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38

Parmar, Dixit. "Reductive cyclisations of lactones using SmI2 and H2O." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/reductive-cyclisations-of-lactones-using-smi2-and-h2o(533c0430-fd14-4a24-93f2-18a7fb27232f).html.

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Carbonyl reduction is a fundamental transformation that underpins synthetic chemistry. The re-routing of carbonyl reduction through less-conventional intermediates allows new selectivity and reactivity to be found in the resulting reaction space. We have shown for the first time that the unusual radical anions formed by electron transfer to the ester carbonyl group can be exploited in additions to alkenes. We have demonstrated that the reductive cyclisations of lactones, triggered by electron-transfer from SmI2-H2O, allow for highly decorated cyclopentane and cycloheptane ring systems to be co

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39

Martinez, Sandra Ainsua. "Oxidative radical cyclisations for the synthesis of lactones." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:4a8185e5-41fb-409c-9856-88f51b71912c.

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The object of study of this thesis lies on the optimisation of the oxidative radical cyclisation methodology for the preferential formation of gamma-lactones from unsaturated alkyl malonate derivatives. <strong>Chapter 1</strong> introduces the concept of free-radical cyclisation; more extensive explanations are given for the intramolecular oxidative radical cyclisation using manganese(III) and copper(II) salts as oxidants. An overview of the contribution of the Burton group in the field is given, in which both the applicability and the limitations of the transformation are showcased. <strong>

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40

Gokhale, N. J. "Synthesis of some bioactive lactones and acetylenic alcohols." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1997. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3375.

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41

Bouaziz, Zouhair. "Synthèse et étude par impact électronique de dérivés de l'hydroxy-5 naphtalène carbolactone-1,8 : relations structure-activité entre les paramètres électroniques et l'activité cytotoxique." Lyon 1, 1989. http://www.theses.fr/1989LYO1T087.

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42

Sabie, Rafa. "Synthèse et étude structurale d'α-acétyl-α'-naphtols et de dihydronaphtoxazines dérivés de la 5-hydroxynaphtalène-1,8 carbolactone : recherche de l'activité cytotoxique in vitro". Lyon 1, 1990. http://www.theses.fr/1990LYO1T148.

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43

Cao, Shuyong. "Characterization of macrolactonization catalyzed by the excised thioesterase domain of biosurfactant lichenysin D synthetase /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202005%20CAO.

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44

Skead, Benjamin M. "Research in carbohydrate chemistry." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358724.

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45

Rubinger, Mayura Marques Magalhaes. "A new approach to the pseudoguaianolides." Thesis, University of Reading, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259501.

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46

Falentin-Daudre, Céline. "Synthèse directe de monothioéthers, d'aminoacides polyhydroxylés et de lactames N-alkylés à partir de D-pentono-1,4-lactones." Amiens, 2009. http://www.theses.fr/2009AMIE0107.

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47

Garzino, Frédéric. "Synthèse radicalaire asymétrique de y-lactones et de2,3-dihydrofuranes induite par Mn(OAc)3 : Accès des lignanes enantiométriquement purs." Aix-Marseille 2, 2001. http://www.theses.fr/2001AIX22064.

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48

Mondal, S. "Organocatalytic enantioselective synthesis of functionalized cyclopentenes, beta-lactones and spirocyclohexenols." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2017. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/4527.

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49

Cervezan, Thalita Cristina Marques [UNESP]. "Avaliação fitoquímica e microbiológica da espécie Artemisia annua L., submetida a tratamentos de armazenamento e condições de ambiente." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/90610.

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Made available in DSpace on 2014-06-11T19:24:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2013-02-25Bitstream added on 2014-06-13T19:11:19Z : No. of bitstreams: 1 cervezan_tcm_me_botfca.pdf: 497237 bytes, checksum: d6694ebd7c9403db49840bbd8579a450 (MD5)<br>A espécie Artemisia annua, Asteraceae, nativa da China, tem a artemisinina como seu principal componente ativo, é considerado um potente antimalárico. Com o aumento do valor dos princípios ativos naturais, estudos relacionados à pós-colheita e armazenamento de material vegetal tornam-se importantes para melhor conservação de suas p

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Fatima, Angelo de. "Goniotalamina, epoxigoniotalamina, argentilactona e derivados : sinteses totais e atividades antiproliferativas contra celulas tumorais humanas." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/249281.

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Orientador: Ronaldo Aloise Pilli<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-04T13:47:35Z (GMT). No. of bitstreams: 1 Fatima_Angelode_D.pdf: 6353488 bytes, checksum: a8d593bc18e70b70bdac0ab5c7789f96 (MD5) Previous issue date: 2005<br>Doutorado<br>Quimica Organica<br>Doutor em Quimica

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