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Studies directed at the stereoselective synthesis of flavonoids through the hydrogenation of prochiral precursors
(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 ...
Structure and synthesis of a novel homoisoflavanone from Scilla natalensis and synthesis of selected procyanidins through the C-4 functionalization of flavan-3-ols
(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 ...
Development of methodology for the synthesis of 4-arylflavan-3-ol lactones
(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, ...
Conformational analysis of oligomeric profisetinidins
(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 ...
Biflavonoied diastereo-isomere en hul biogenetiese voorlopers uit Berchemia SPP.: pogings tot sintese van analoe
(University of the Free State, 1976-02)
Afrikaans: Hierdie studie behels die struktuurondersoek, omskakelingsreaksies en pogings tot sintese van sommige van die mono- en biflavonoïede uit die kernhout van Berchernia zeyheri met 'n aanvullende studie op die ...
Structure and synthesis of polyphenols from cyclopia subternata
(University of the Free State, 2002-06)
English: Cyclopia subternata (Fabaceae), from which Honeybush tea is brewed, is one of approximately 24 Cyclopia species of woody legumes endemic to the Cape fynbos (Cape macchia) region of South Africa. Supported by results ...
An investigation into the biocatalytic and antimicrobial properties of Eucomis autumnalis Mill. bulbs
(University of the Free State, 2003)
English: Over the past number of years a renewed interest in the search for natural alternative products, with the aim to replace existing synthetic antimicrobial, herbicidal and pesticidal chemicals in organic crop ...
'n Ondersoek na die antibakteriese eienskappe van Carpobrotus edulis L.
(University of the Free State, 1999-11)
English: In the folk medicine of South Africa, many traditional medicinal plants are
used by both the rural and a small percentage of the city population. One of
these plants is Carpobrotus edulis L. An investigation of ...
The structure and synthesis of trimeric and related dimeric Proteracacinidins from Acacia heteroensis.
(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 ...
The structure and synthesis of trimeric and related dimeric Proteracacinidins from Acacia heteroensis.
(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 ...