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    Secondary metabolites from Xylariaceous fungi. The isolation and structure elucidation of secondary metabolites from Xylariaceous fungi by chemical and spectroscopic methods.

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    R.A.A.Alhaidari Thesis PDF.pdf (4.272Mb)
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    Publication date
    2013-11-21
    Author
    Alhaidari, Rwaida A.A.
    Supervisor
    Maitland, Derek J.
    Keyword
    Endophytes
    Xylaria
    Fungi
    Secondary metabolites
    NMR
    Structure elucidation
    Xylariaceous fungi
    Rights
    Creative Commons License
    The University of Bradford theses are licenced under a Creative Commons Licence.
    Institution
    University of Bradford
    Department
    Division of Chemical and Forensic Sciences
    Awarded
    2012
    
    Metadata
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    Abstract
    This thesis describes the isolation and structure elucidation of secondary metabolites formed in static culture from a number of endophytic Xylariaceous fungi. Four Xylaria endophytes isolated from a palm tree in Thailand were surface cultured on an aqueous malt extract-glucose medium. They all produced cytochalasin D, coriloxin, (S)-mellein and (3R,4R)-4-hydroxymellein as the main secondary metabolites suggesting that the four endophytes could be the same species. The endophytic fungus A116 produced cytochalasin D as the main secondary metabolite. Another non-endophytic fungus B315, produced cytochalasin D, (R)-mellein, a mixture of two isomers of 4-hydroxymellein and phloroglucinol. X.62, an endophytic fungus, produced 19,20-epoxycytochalasin C from the mycelium as the main secondary metabolite. The fungus Engleromyces sinensis produced engleromycin acetate as the main secondary metabolite. Fungus X. polymorpha produced (3E)-4-(3¿-acetyl-2¿,6¿-dihydroxy-5¿-methylphenyl)-2-methoxybut-3-enoic acid.
    URI
    http://hdl.handle.net/10454/5705
    Type
    Thesis
    Qualification name
    PhD
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