Sökning: "thioglycoside"
Visar resultat 1 - 5 av 9 avhandlingar innehållade ordet thioglycoside.
1. Development of a Novel Promoter System for Thioglycoside Activation; and its application in the synthesis of a GD3 bis-lactam
Sammanfattning : A novel promoter system IX/AgOTf (X=Cl or Br) for thioglycoside activation has been developed (paper I-II). The promoter system has been evaluated in the synthesis of two GD3 bis-lactam fragments (paper III)... LÄS MER
2. Synthesis of Bacterial Oligosaccharides from N. meningitidis and Mechanistic Details of Stereoselective Glycosylations Using a Novel Bicyclic Donor
Sammanfattning : This thesis includes two parts. The first part, comprising Chapters 3, 4 and 5, describes the synthesis of bacterial oligosaccharides. In Chapters 3 and 4, the synthesis of branched and phosphorylated oligosaccharide structures corresponding to inner core epitopes of the lipopolysaccharide (LPS) of the Gram-negative bacteria N. LÄS MER
3. Some New Methods in Sialic Acid Chemistry
Sammanfattning : Gangliosides (G) are sialic acid-containing cell surface glycosphingolipids capable of forming lactones, i.e. inner esters. Some gangliosides are tumor-associated antigens, and they may serve as immunogens in their lactone form, where the latter is comparatively more abundant on the surface of malignant cells. LÄS MER
4. Development of strategies for construction of thioglycoside building blocks corresponding to repeating triads of Cryptococcus neoformans GXM capsular polysaccharide
Sammanfattning : This thesis focuses on the development of methods for synthesis of thioglycoside building blocks corresponding to the repeating units of the capsular polysaccharide (CPS) of Cryptococcus neoformans, an opportunistic fungal pathogen. The building blocks are suitable for construction of large synthetic oligosaccharides related to the native CPS-structures which are to be used in biological studies in order to identify protective epitopes with the aim to develop a glycoconjugate vaccine against C. LÄS MER
5. Dynamic Sulfur Chemistry : Screening, Evaluation and Catalysis
Sammanfattning : This thesis deals with the design, formation and evaluation of dynamic systems constructed by means of sulfur-containing reversible reactions, in organic and aqueous media and under mild conditions. In a first part, the synthesis of thioglycoside derivatives, constituting the biologically relevant starting components of the dynamic systems, is described. LÄS MER