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Study of Boron-Carbohydrate Interaction
Vejvodová, Tereza ; Jelínek, Ivan (advisor) ; Coufal, Pavel (referee)
The interaction between boron and sugars is significant for understanding the role of boron as a carrier for nucleotides and carbohydrates. Arylboronic acids also have wide application as sugars sensors because they are small and flexible molecules. Boron complexes play a key role in boron neutron capture therapy. This radiotherapy is important in the treatment of melanoma, glioblastoma multiforme and other types of cancer. Boron complexes with ascorbic acid and glucose were prepared in this thesis and then characterized by high-resolution mass spectrometry (HRMS). Synthesised complexes were studied using collision-induced dissociation (CID), which led to the clarification of their fragmentation mechanism. Key Words Boron complexes, ascorbic acid, glucose, carbohydrates, mass spectrometry, electrospray ionization, ESI-MS, collision-induced dissociation
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Complexes of zinc salts and flavonoids
Křížová, Tereza ; Roithová, Jana (advisor) ; Volný, Michael (referee)
Modern mass spectrometry (MS) is very well suited for analysis of flavonoids and their complexes. Progress during the last two decades has made MS the most sensitive method for molecular analysis of flavonoids. MS has a potential to provide information on the exact molecular mass, as well as on the structure. Flavonoids are acting as chelating agents on various metal ions. The goal of this study was to discover, which types of ions are formed in solutions of zinc salts and flavonoids by using mass spectrometry attached with electrospray ionization. First, we have studies substructures of flavonoid - resorcin, pyrokatechin a pyron - in order to find out, how individual parts of flavonoid interact with zinc ions.
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