Now showing items 1-4 of 4

    • 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 ...
    • Photochemistry of pentoxifylline: a xanthine derivative 

      Han, Ze (Unversity of the Free State, 2006-11)
      English: Pentoxifylline [1-(5'-oxohexyl)-3,7-dimethyl-3,7-dihydro-1H-purine-2,6-dione], sold under the trade name Trental®, is a methylxanthine derivative used in treatment of peripheral and cerebrovascular diseases and ...
    • Reactions of polyphenols with α-keto acids 

      Montsho, Rosinah Maiyane (University of the Free State, 2007-01)
      English: Novel methods of carbon-carbon bond formation are of considerable theoretical and practical interest to synthetic organic chemists. This work investigates the formation and synthetic potential of a methine bond ...
    • A solid state NMR and MS characterisation of the chemical composition of mimosa bark extract 

      Senekal, Nadine D. (University of the Free State, 2011-01)
      English: Mimosa (Acacia mearnsii) also known as black wattle, and quebracho (Schinopsis balansae, Schinopsis lorentzii) are the major commercial sources of natural condensed tannins (proanthocyanidin oligomers) used today. ...