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Dissertations / Theses on the topic 'Structural elucidation'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Stuani, Lucille. "Nouveaux aspects du métabolisme d'acinetobacter baylyi ADP1 : une approche métabolomique." Thesis, Evry-Val d'Essonne, 2014. http://www.theses.fr/2014EVRY0048/document.

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La connaissance du métabolisme demeure incomplète mais sa compréhension reste un but majeur tant pour la recherche fondamentale qu’appliquée. Environ 40% des gènes des organismes procaryotes n’ont pas de fonction précise proposée. En conséquence, de nombreuses voies métaboliques restent incomplètes, rendant très difficile la prédiction du métabolisme d’un organisme. Les recherches et les avancées dans la compréhension de la cascade des « omiques » incluant la génomique, la transcriptomique, la protéomique et la métabolomique jouent aujourd’hui un rôle central dans la connaissance du métabolism

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2

Herraiz, Cobo Jesús. "Mayotlide: synthetic approaches and structural elucidation." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/462881.

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Mayotlide is a marine peptide isolated by PharmaMar S.A. from Spongia sp.. The sequence of the aminoacids were achieved by MS-MS spectrometry, where two of them were tryptophans. The NMR spectroscopy revealed the presence of N1-C3a bond between the tryptophans, which means that one of them was cyclized. On the first structure proposal, the aminoacids were forming two macrocyclic rings: on the ring B, all the aminoacids of molecule were tied by amide bond, remarking the presence of the cyclized tryptophan as a hexahydropyrroloindole unit (HPI). The ring A was established by three aminoacids of

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3

Murthy, Nevin. "hIws1 structural elucidation and protein interactions." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p1467930.

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Thesis (M.S.)--University of California, San Diego, 2009.<br>Title from first page of PDF file (viewed September 15, 2009). Available via ProQuest Digital Dissertations. Includes bibliographical references (p. 50-56).

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4

Farshchian, Mona. "Structural elucidation of mRNA(Sirt1)-microRNA 34a complex." Thesis, KTH, Skolan för teknikvetenskaplig kommunikation och lärande (ECE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168623.

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The aim of this thesis is to understand RNA-RNA interactions steering cellular functions, as in the case of this thesis the structure of mRNA(Sirt1) in complex with microRNA-34a (miR-34a). MiR-34a regulates the cancer protein p53 via Sirt1 modulation. This work will be the basis for future drug design and the understanding of misguided regulation in cancer. The miR-34a binds to the mRNA(Sirt1) 3’ untranslated region (3’-UTR) and will either inhibit the translation of the protein Sirtuin 1 by capturing its mRNA or by degrading it. p53, a key activator of miR-34a, prevents cancer development by

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5

Vanga, Raghava Reddy. "Studies toward the synthesis and structural elucidation of chamuvarinin." Thesis, University of St Andrews, 2009. http://hdl.handle.net/10023/953.

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Chamuvarinin (22) is a unique annoanceaeous acetogenin isolated from the roots of Senegalese medicinal plant Uvaria chamae by Laurens and co-workers in 2004. It displays highly potent cytotoxicity towards the cervical cancer cell lines (KB 3-1, IC₅₀= 0.8 nM). Structurally, chamuvarinin is the first reported acetogenin to contain an adjacently linked bis-THF-THP ring system spanning the C15-C28 carbon backbone. However, initial efforts to assign the relative and absolute configuration within this stereochemical array, on the basis of ¹H and ¹³C NMR analysis, provided only partial information pe

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6

Dengada, Amrapali Harishkumar. "Isolation and Structural Elucidation of Compounds from Natural Products." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/64303.

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Isolation and Structural Elucidation of Compounds from Natural Products Amrapali H. Dengada In continuation of the Kingston group's work to identify new compounds from natural products as a part of the International Cooperative Biodiversity Group (ICBG) program and in collaboration with the Institute for Hepatitis and Virus Research (IHVR), the two plants Neoharmsia baronii and Lopholaena cneorifolia were studied to identify their chemical components. Structural elucidation and characterization of the compounds were done using mass spectrometry, 1D and 2D NMR spectroscopy techniques.

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7

Ray, Sayani. "Elucidation of enzymatic consortia for structural chemotyping of dicot hemicelluloses." Nantes, 2014. https://archive.bu.univ-nantes.fr/pollux/show/show?id=f8241303-d93f-45e4-a109-321bfc9281ff.

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Xyloglucanes (XyG), galactoglucomannanes (GgM) et glucuronoarabinoxylanes (GAX) sont des hémicelluloses clés pour la régulation des fonctions de la paroi chez les dictoylédones. Cependant, l’impact de leur composition variée et de leur distribution dans la paroi reste à élucider. Pour explorer leur structure fine, la dégradation par des enzymes commerciales des fractions natives de XyG, GgM et GAX acetylés a révélé des structures différentes entre différentes populations de chaque hémicellulose, avec en particulier la première mise en évidence de substitutions arabinose et/ou xylose sur les GA

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8

Salim, Angela Aguslyarti. "Isolation and structural elucidation of bioactive compounds from Indonesian medicinal plants /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18695.pdf.

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9

Asibal, Clarita Florendo. "Isolation and structural elucidation of pyrrolizidine alkaloids from four plant sources." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/30246.

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10

Zheng, Zongping, and 郑宗平. "Isolation and structural elucidation of tyrosinase inhibitors from five plant extracts." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B45700072.

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11

Aldred, Gregory. "Studies towards the total synthesis and structural elucidation of leiodolide A." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/6657.

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In 2006, the secondary metabolite leiodolide A was isolated from a newly discovered deep-sea sponge of the genus Leiodermatium. The 19-membered macrolide represented a new class of mixed polyketide, nonribosomal, peptide synthetase natural products. A total synthesis of leiodolide A is yet to be achieved and is of specific interest, not only for its complex structure and undefined stereochemistry, but also the potent cytotoxic properties it possesses, particularly towards leukaemia, non-small cell lung and ovarian cancers. A synthetic strategy for leiodolide A must be flexible to overcome the

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12

Hackland, Peter Linton. "The structural elucidation of the capsular antigen of klebsiella serotype k69." Thesis, Rhodes University, 1987. http://hdl.handle.net/10962/d1004901.

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13

Roshani, Shahram. "Elucidation of local and global structural properties of packed bed configurations." Thesis, University of Leeds, 1990. http://etheses.whiterose.ac.uk/3153/.

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Some of the most common unit operations being used in the chemical industry are based upon packed bed configurations. Multi-tubular catalytic reactors are a prominent example of such systems which are believed by many experts to be the heart of the chemical profession and frequently the most expensive units of the plant. They offer extensive surface area between phases of the matter in a compact physical manner, and also are relatively easy to construct and maintain. The successfuld esign of such systems depends on models, which should describe the processes occurring within the fixed bed and

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14

Pelay, Gimeno Marta. "Synthesis, structural elucidation and biological evaluation of Pipecolidepsin A and Phakellistatin 19." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/108280.

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Pipecolidepsin A is a cyclodepsipeptide produced by a Homophymia marine sponge that has shown interesting anticancer properties against several human cancer cell lines. From a structural point of view, it is a “head-to-side-chain” cyclodepsipeptide, in which the ester bond links the C-terminal and the side-chain of the unprecedented amino acid AHDMHA. This linkage provides a beta-branched arrangement that comprises a 25-membered macrolactone, and an exocyclic peptidic arm terminated with a polyketide moiety. Furthermore, Pipecolidepsin A contains up to 6 synthetic building blocks with several

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15

Yu, Margaret. "Applying 2D NMR methods to the structural elucidation of complex natural products." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq28097.pdf.

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16

Durow, Amanda C. "Towards the isolation and structural elucidation of victorin C from 'Cochliobolus victoriae'." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435737.

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17

Mantonico, Malisa. "Elucidation of structural Properties of amyloid-like Fibrils via Solid State NMR." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-227706.

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The invention of plastic has revolutionized people's life style not only by facilitating the storage and transportation of various goods but also by improving mechanical properties of mankind's technological advances. However, plastic is considered to be harmful, as it contains toxic chemical compounds which are accumulated due to its persistence. Therefore, plastic materials represent a threat to the wildlife, since its extensive use and disposal in landfills and natural habitats increased eminently. People's growing concern about the enviromental impact of pastic and its presence in the food

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18

Jiang, Zhi-Hua. "Advances and applications of quantitative ³¹P NMR for the structural elucidation of lignin." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0013/NQ36991.pdf.

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19

Stefan, Madalina Andreea. "Chiral retinoid derivatives synthesis and structural elucidation of a new vitamin A metabolite /." kostenfrei, 2006. http://www.digibib.tu-bs.de/?docid=00012504.

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20

Jiang, Zhi-Hua. "Advances and applications of quantitative 31P NMR for the structural elucidation of lignin." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34650.

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31P NMR spectroscopy was further developed for the structural elucidation of lignin by undertaking a series of systematic studies. More specifically, a detailed model compound investigation showed that 2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphospholane is an additional phosphitylation reagent which may provide further quantitative structural information about lignin. Correlation analysis using the Hammet principles revealed that the 31P chemical shifts of lignin- related phenolic hydroxyls with various substitution patterns strongly depend on the nature of the substitution. Such structure-che

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21

Nair, Margie May. "The application of nuclear magnetic resonance in the structural elucidation of natural products." Master's thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/16004.

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Includes bibliographical references.<br>Multipulse Nuclear Magnetic Resonance (NMR) techniques were investigated via structural assignment of various natural products. The natural products chosen for investigation of 2D NMR spectroscopy as a structural tool were the opium alkaloids codeine and papaverine, the diterpenoid alkaloids delphinine and aconitine and the triterpenoid derivatives of cucurbitaceae. One dimensional NMR spectroscopy viz 1H, 13C and Distortionless Enhancement by Polarisation Transfer (DEPT) spectroscopy was initially applied to obtain a level of indication of the complexit

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22

MacMillan, John Bryan. "Investigation of the diverse secondary metabolism of cyanobacteria : structural elucidation and absolute stereochemistry /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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23

PEDRELLI, FRANCESCA. "Isolation, structural elucidation and evaluation of bioactivity of secondary metabolites from aromatic plants." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1000588.

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Salvia tingitana Etl. is an aromatic woody-based perennial shrub original from the Arabian region. The analysis of the surface extract of the aerial parts afforded one nor-sesterterpene, eight new sesterterpenes and five known sesterterpenes, together with other known compounds that include five labdane and one abietane diterpene, one sesquiterpene and four flavonoids. The methanolic extract of the roots of S. tingitana was also investigated. Salvia corrugata Vahl. is cultivated in the Mediterranean coastal area as an ornamental plant. The methanolic extract of the roots and the twelve semi-pu

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24

Szwarc, Sarah. "Développements méthodologiques en chimie analytique pour l'identification des enzymes catalysant des cyclisations C-N chez les alcaloïdes indolomonoterpéniques." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASQ074.

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Les alcaloïdes indolomonoterpéniques (AIM) constituent l'une des classes de produits naturels végétaux les plus diversifiées dans le vivant. Ces dernières années, l'étude de leurs voies de biosynthèse a suscité un intérêt croissant au sein de la communauté scientifique, notamment en raison des activités biologiques remarquables de certains de leurs représentants. Les avancées réalisées dans le domaine du génie métabolique permettent aujourd'hui de reconstituer les voies de biosynthèse de composés d'intérêt dans des organismes hôtes, contournant ainsi les limites des méthodes classiques d'obten

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25

Concannon, Shauna. "A study of the isolation, synthesis, structural elucidation and biological properties of coumarin derivatives." Thesis, University of Ulster, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274067.

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26

Polfer, Nicolas Camille. "Structural elucidation of peptides and proteins by Fourier transform ion cyclotron resonance mass spectrometry." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/11267.

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Two unique features of FT-ICR mass spectrometry are high mass resolution and mass accuracy. These features have been exploited in a novel approach to the study of metal exchange reactions in metallo-proteins using stable isotope labelling. The system chosen, Zn<sub>4</sub>-SmtA, is a cyanobacterial metallothionein (MT) Deconvoluted ESI-FT-ICR spectra for Zn<sub>4</sub>-FT-ICR spectra for Zn<sub>4</sub>-Smt containing Zn isotopes in natural abundance as well as enriched with 93% <sup>67</sup>Zn show that the Zn<sub>4</sub> cluster of SmtA, in contrast to the structurally-analogous cluster of ma

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27

Nguyen, Hanh D. "Structural Elucidation of tert-Butyllithium/Lithium Alkoxide and Lithium Hydride/Lithium Alkoxide Mixed Aggregates." Thesis, University of North Texas, 1997. https://digital.library.unt.edu/ark:/67531/metadc278525/.

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The effects of lithium alkoxides on the rates of reactions and on the structures of a series of tert-butyllithium/lithium alkoxide mixed aggregates were studied, where the alkoxides were iso-butoxide, tert-butoxide and menthoxide. It was found that their effects depend not only on their amount present, but also on their steric bulk. The tert-butyllithium/lithium alkoxide mixed aggregates were exposed to UV light or heat to form lithium hydride/lithium alkoxide mixed aggregates. The aggregation states were assigned from either 13C-6Li coupling or a new technique based on the relative intensi

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28

Maltsev, Sergey [Verfasser], Dieter [Gutachter] Freude, Christian [Gutachter] Jäger, and Helmut [Gutachter] Cölfen. "Structural elucidation of nanocrystalline biomaterials / Sergey Maltsev ; Gutachter: Dieter Freude, Christian Jäger, Helmut Cölfen." Berlin : Bundesanstalt für Materialforschung und -prüfung (BAM), 2008. http://d-nb.info/1122835981/34.

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29

Sudek, Sebastian. "Biosynthesis of natural products in marine bacteria studies in molecular genetics, phylogeny and structural elucidation /." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3215295.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed July 24, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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30

Tay, Li-Lin. "Improved procedure for setting up, running, and interpreting 2D-NMR spectrum used for structural elucidation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq28760.pdf.

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31

Brohawn, Stephen Graf. "Structural elucidation of a common architecture of the nuclear pore complex and COPIl vesicle coats." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/58396.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 156-169).<br>Nuclear pore complexes (NPCs) are massive protein assemblies that perforate the nuclear envelope and form the exclusive passageway for nucleocytoplasmic transport. NPCs play critical roles in molecular transport and a myriad of other cellular processes. Elucidation of the structure of the NPC is thus expected to provide important insight into cell biology. In this thesis, I investigate the structure of a key subcomplex

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32

Zhang, Jinhua. "Characterization and structural elucidation of oligosaccharides by matrix-assisted laser desorption/ionization Fourier transform mass spectrometry /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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33

Romeril, Stuart P. "Synthesis and structural elucidation of the Bis-3-alkylpyridine alkaloid pyrinodemin A and other monomeric alkaloids." Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288526.

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34

Joyce, Clare Elizabeth. "The isolation, separation, structural elucidation and biological properties of organic compounds of pharmaceutical and plant origin." Thesis, University of Ulster, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422893.

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35

Mould, Katy M. "Studies towards the total synthesis and structure elucidation of leiodolide A." Thesis, University of St Andrews, 2013. http://hdl.handle.net/10023/4113.

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Leiodolide A is a unique natural product isolated from Pacific marine sponges which has provided an interesting target for total synthesis due to its complex structure and undefined stereochemistry. Although synthetic work towards the synthesis of sister compound leiodolide B has been published, the total synthesis of leiodolide A is yet to be achieved but remains an important target due to high potency against leukaemia, non-small lung and ovarian cancers. The convergent strategy towards the synthesis of leiodolide A involved the synthesis of three subunits; a synthetic route to the C21-C25 v

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36

Elsheikh, Mahammed Osman Abdalla. "Isolation, identification and structural elucidation of tertiary alkaloids from the root of Thalictrum minus L. race C /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487262825077916.

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37

Endale, Mengesha Abebe. "Isolation, structural elucidation, quantification and formulation of the saponins and flavonoids of the seeds of Glinus Lotoides." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB12103730.

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Wassmann, Paul. "Elucidation of the regulatory mechanisms of the diguanylate cyclases PleD, DgcA and DgcB by structural and biophysical analysis /." [S.l.] : [s.n.], 2009. http://edoc.unibas.ch/diss/DissB_8738.

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39

Akter, Raushanara. "Isolation and Structural Elucidation of Bioactive Compounds from Bangladeshi Medicinal Plants with a Focus on Novel Anticancer Compounds." Thesis, Griffith University, 2014. http://hdl.handle.net/10072/366507.

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The present study describes the bioactivity guided isolation and structural elucidation of novel anticancer compounds from the Bangladeshi medicinal plant Blumera lacera. At the outset nineteen Bangladeshi medicinal plants were selected and collected from different parts of Bangladesh. Plants underwent preliminary cytotoxicity screening based on their traditional medicinal uses, limited previous research on them, and their availability. The selected plants were extracted with methanol and screened for their cytotoxic potential using the MTT assay against two healthy cell lines (mouse fibroblas

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40

Svilar, Ljubica. "Structural elucidation of secondary metabolites from Hypoxylon fragiforme, using high resolution mass spectrometry and gas-phase ion-molecule reactions." Paris 6, 2012. http://www.theses.fr/2012PA066468.

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Fungi produce a wide variety of biologically active compounds/metabolites that could be used for medicinal and pharmaceutical purposes. Mitorubrines, members of the family of azaphilones, constitute a particularly interesting set of structurally diverse secondary metabolites, exhibiting a wide range of biological activities (e. G. Antimicrobial, antibacterial, antimalarial). This work describes the development of several mass spectrometry-based approaches to solve the natural structural diversity and complexity of azaphilones extracted from Hypoxylon fragiforme fungus. The first part of this m

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Uddin, Shaikh Jamal. "Cytotoxicity Screening of Bangladeshi Medicinal Plants and Isolation and structural Elucidation of Novel Anti-Cancer Compounds from Acrostichum aureum." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/365889.

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This thesis describes the cytotoxicity and phytochemical screening of 16 selected medicinal plants collected from the tidal forests of the coastal Sundarban and locations within the Khulna district of Bangladesh. The selected plants were successively extracted with n-hexane, dichloromethane, methanol and water. The methanol and aqueous extracts were then screened for cytotoxic activity (MTT assay) against one normal mouse fibroblast and three human cancer cell lines (gastric, colon and breast cancer). The results supported some of the traditional uses and reported cytotoxic activity for some o

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42

Mietrach, Nicole Aline [Verfasser], and Sebastian [Gutachter] Geibel. "Structural and functional elucidation of the Type VIIb secretion system from Staphylococcus aureus / Nicole Aline Mietrach ; Gutachter: Sebastian Geibel." Würzburg : Universität Würzburg, 2020. http://d-nb.info/122152786X/34.

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Hoff, Rodrigo Barcellos. "Identificação e Caracterização de metabólitos de sulfaquinoxalina." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/106997.

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A presença de resíduos de medicamentos antibacterianos em alimentos é um importante problema de saúde pública. Estas substâncias podem estar presentes nos alimentos em níveis inaceitáveis como resultados de práticas produtivas inadequadas. Devido a estas preocupações, são estabelecidos limites máximos de resíduos para estas substâncias (LMRs). No caso das sulfonamidas, este valor de LMR refere-se à soma do princípio ativo e de todos seus metabólitos. Neste trabalho, identificam-se e caracterizam-se metabólitos de sulfaquinoxalina (SQX) em diversas espécies animais. Dentro do processo investiga

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Dardic, Denis [Verfasser], Helge B. [Gutachter] Bode, and Peter E. [Gutachter] Hammann. "Isolation and structural elucidation of novel natural products with pharmaceutical potential / Denis Dardic ; Gutachter: Helge B. Bode, Peter E. Hammann." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2019. http://d-nb.info/1197128034/34.

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45

Yang, Xu. "Brevibacillin, an Antimicrobial Lipopeptide Discovered from Genus Brevibacillus: Structural Elucidation, Mode of Action, Fermentation and Application in Commercial Apple Juice." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1483374108859293.

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46

Lundborg, Magnus. "Computer-Assisted Carbohydrate Structural Studies and Drug Discovery." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-56411.

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Carbohydrates are abundant in nature and have functions ranging from energy storage to acting as structural components. Analysis of carbohydrate structures is important and can be used for, for instance, clinical diagnosis of diseases as well as in bacterial studies. The complexity of glycans makes it difficult to determine their structures. NMR spectroscopy is an advanced method that can be used to examine carbohydrates at the atomic level, but full assignments of the signals require much work. Reliable automation of this process would be of great help. Herein studies of Escherichia coli O-an

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Wu, Boshen. "Synthesis of taurospongin A and other biologically active natural products." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:37a34bc4-efb4-4a6b-9d44-a3ad1c8ae0be.

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This thesis firstly describes a synthesis of the natural product taurospongin A, a potent DNA polymerase beta inhibitor. Sharpless asymmetric dihydroxylation on olefin <b>E-1.60</b> followed by selective deoxygenation at C(2) via Barton‒McCombie reaction delivers the desired C(1)–C(10) carboxylic acid core. Subsequent esterification of the C(1)–C(10) fragment with C(1′)–C(25′) fatty acid furnishes the natural product in 13.5% yield. The structure of an unnamed natural product <b>2.14</b> isolated in 1974 is proven to be misassigned by previous studies within the Robertson group. As described i

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Zeyadi, Mustafa Verfasser], and Mohamed A. [Akademischer Betreuer] [Marahiel. "Structural Characterization of the Heterobactin Siderophores from Rhodococcuserythropolis PR4 and Elucidation of their Biosynthetic Machinery / Mustafa Zeyadi. Betreuer: Mohamed A. Marahiel." Marburg : Philipps-Universität Marburg, 2015. http://d-nb.info/1081215453/34.

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Wall, Erin A. "ELUCIDATION OF A NOVEL PATHWAY IN STAPHYLOCOCCUS AUREUS: THE ESSENTIAL SITE-SPECIFIC PROCESSING OF RIBOSOMAL PROTEIN L27." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3747.

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Abstract:

Ribosomal protein L27 is a component of the eubacterial large ribosomal subunit that has been shown to play a critical role in substrate stabilization during protein synthesis. This function is mediated by the L27 N-terminus, which protrudes into the peptidyl transferase center where it interacts with both A-site and P-site tRNAs as well as with 23S rRNA. We observed that L27 in S. aureus and other Firmicutes is encoded with a short N-terminal extension that is not present in most Gram-negative organisms, and is absent from mature ribosomes. The extension contains a conserved cleavage motif; n

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O'Donnell, Fionnuala Louise. "The isolation, separation, structural elucidation and biological properties of synthetic and naturally occurring pharmaceuticals and the construction of databases for their characterisation." Thesis, University of Ulster, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494396.

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