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    Direct synthesis of pterocarpans via aldol condensation 

    Van Aardt, Theunis G. (University of the Free State, 2000-05)
    English: Pterocarpans, representing the second largest group of natural isoflavonoids, have received considerable interest on account of their medicinal properties over the last few years. These phytoalexins not only ...
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    Studies directed at the stereoselective synthesis of flavonoids through the hydrogenation of prochiral precursors 

    Van Tonder, Johannes Henning (University of the Free State, 2008-11)
    English: The in vitro studies of biologically active flavonoids are hampered by the inaccessibility of all monomeric units in enantiomerically pure form. Although a number of these scalemic flavonoids can be obtained ...
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    Conformational analysis of oligomeric profisetinidins 

    Potgieter, Eleonora Deborah (University of the Free State, 2007-02)
    English: The profisetinidins are an important class of condensed tannins, or proanthocyanidins. Historically, studies towards the structure and conformation of proanthocyanidins were done on their peracetate and permethyl ...
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    Structure and synthesis of a novel homoisoflavanone from Scilla natalensis and synthesis of selected procyanidins through the C-4 functionalization of flavan-3-ols 

    Kuo, Chen-Miao (University of the Free State, 2008-05)
    English: Scilla natalensis planch (Hyacinthaceae), commonly known as Wild squill, Blue squill, Blue hyacinth, Blouberglelie, Blouslangkop, Inguduza, is one of the plants that are widely used in traditional medicines and ...
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    Development of methodology for the synthesis of 4-arylflavan-3-ol lactones 

    Van Tonder, Bernadette (University of the Free State, 2008-05)
    English: The phenolic content of the heartwood of Peltophorum africanum (African wattle) and Burkea africanum (Red syringa) proved to contain a variety of compounds including the novel 4-arylflavan-3-ol lactones, ...
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    Photochemistry of (+)-catechin and (-)-epicatechin 

    Wilhelm, Anke (University of the Free State, 2008-01)
    Despite the well known fact that photolysis of free phenolic catechins give rise to isomerisation at the C-2 position (e.g. (-)-cis epicatechin converts to the sterically less hindered (-)-trans isomer), researchers have ...
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    Development of a viable protocol aimed at the synthesis of a selected natural product with possible application in the industry 

    Jordaan, Lizette (University of the Free State, 2007)
    Since the introduction of synthetic analogues in both the health-related and cosmetic industry, a new generation has emerged in search of beneficial bioactivity compounds. This generation of “natural and green” focuses ...
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    The structure and synthesis of oligoflavanoids and oligostilbenes from cassia abbreviata 

    Mthembu, Makhosazana Claribel (University of the Free State, 2000-01)
    English: During the present study the acetone extract of the heartwood of Cassia abbreviata afforded the known flavan-f-ols, catechin, epicatechin, epiafzelechin, afzelechin and the new (2R,3S) guibourtinidol. This was ...
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    Epimesquitol-flavone dimers and related oligomers from Acacia nigrescens synthesis of 3',4',7,8-substituted flavonoid monomers 

    Howell, Hiten (University of the Free State, 2001-11)
    English: The previous investigation, by Fourie in the 1970's, revealed the presence of phenolic compounds in the heartwood of Knobwood (Acacia nigrescens), comprising a series of leucomelacacinidins. Early suggestions that ...
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    The structure and synthesis of trimeric and related dimeric Proteracacinidins from Acacia heteroensis. 

    Fourie, Eleanor (University of the Free State, 2002-07)
    English: The presence of 4', 7,8-trihydroxyl substituted flavanoids in plant material is limited to Acacia galpinii and Acacia caffra in Southern Africa. The existence of pyrogallol-type A-ring oligomers in these trees was ...
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    AuthorFourie, Eleanor (2)Achilonu, Matthew Chilaka (1)Brand, D. J. (1)Craven, Pieter (1)Fourie, Gerald (1)Howell, Hiten (1)Jordaan, Lizette (1)Kuo, Chen-Miao (1)Litedu, Eunice Maria (1)Mthembu, Makhosazana Claribel (1)... View MoreSubject
    Flavonoids (16)
    Dissertation (M.Sc. (Chemistry))--University of the Free State, 2002 (4)Dissertation (M.Sc. (Chemistry))--University of the Free State, 2008 (4)Phenols (3)Anthocyanidins (2)Antioxidants (2)Catechin (2)Flavan-3-ols (2)Flavonoids -- Synthesis (2)Glycosides (2)... View MoreDate Issued2002 (4)2008 (4)2000 (2)2007 (2)2001 (1)2003 (1)2005 (1)2009 (1)Has File(s)Yes (16)

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