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Photochemistry of (+)-catechin and (-)-epicatechin
(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 ...
Identification and expression analysis of flavonoid biosynthetic genes in the genus Clivia
(University of the Free State, 2010)
English: Anthocyanins belong to a large group of secondary plant metabolites, the flavonoids, and fulfil a range of biological functions that include the cyanic pigmentation they provide to flowers, fruits, vegetables and ...
Development of new "green" methodology for the synthesis of substituted phenylacetic acid derivatives as precursors to isoflavonoids and related compounds
(University of the Free State, 2013-01)
English: Flavonoids and isoflavonoids are known to exhibit many important physiological properties and are especially promising candidates for cancer chemoprevention. Similar to most natural products, studies directed at ...
The constitution of oligomeric benzofuranoids
(University of the Free State, 1999-05)
English: Berchemia zeyheri is known for its unique red heartwood, a property that was probably
responsible for the first phytochemical investigation into the flavonoid content of this tree.
The heartwood contains a unique ...
Struktuurondersoek van die isoflavanoïde uit Neorautanenia ficifolia (Benth ex Harv.) C.A. Sm.
(University of the Free State, 1965-01)
Abstract not available
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 ...
Development of a viable protocol aimed at the synthesis of a selected natural product with possible application in the industry
(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 ...
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 ...
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 ...
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, ...