Sökning: "Alkaloids"
Visar resultat 6 - 10 av 36 avhandlingar innehållade ordet Alkaloids.
6. Studies on some Dendrobium (Orchidaceae) alkaloids
Sammanfattning : .... LÄS MER
7. Synthetic studies of marine indole alkaloids and related systems
Sammanfattning : This thesis is mainly focussed oil the synthesis of marine indole alkaloids and related systems, many of which display interesting biological activities. In the first part of this thesis we could establish and confirm the stucture of barettin and 8,9dihydrobarettin, isolated from the marine sponge Geodia baretti. LÄS MER
8. Mass Spectrometry of Biologically Active Small Molecules : Focusing on polyphenols, alkaloids and amino acids
Sammanfattning : The foci of this dissertation are on advanced liquid chromatography (LC) separation and mass spectrometry (MS) techniques for the analysis of small bioactive molecules. In addition to discussing general aspects of such techniques the results from analyses of polyphenols (PPs), alkaloids and amino acids published in five appended studies are presented and discussed. LÄS MER
9. Elicitor-induced formation of secondary products in plant cell cultures. Production of benzophenanthridine alkaloids in Eschscholtzia californica Cham. and hydroxycinnamic acid tyramides in Nicotiana glutinosa L
Sammanfattning : Biotic and abiotic elicitors induce biosynthesis of secondary metabolites (phytoalexins) as a defense against pathogenic organisms in plants. The use of cell suspension cultures in combination with elicitors offer excellent experimental model systems for studies on various elicitor-induced responses of plant tissues. LÄS MER
10. Synthetic development towards benzodiazepine alkaloids : total synthesis of circumdatin F and C
Sammanfattning : Benzodiazepine alkaloids exhibit a multitude of interesting pharmacological activities. This thesis deals with the development of synthetic methods towards such alkaloids, of which the main efforts can be divided into three parts. LÄS MER