Sökning: "organic synthesis"

Visar resultat 21 - 25 av 760 avhandlingar innehållade orden organic synthesis.

1. 21. Synthesis of Organic Chromophores for Dye Sensitized Solar Cells

   Författare :Daniel Hagberg; Licheng Sun; Olof Ramström; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic Chromophores; Dye Sensitized Solar Cells; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis is divided into four parts with organic chromophores for dye sensitized solar cells as the common feature and an introduction with general concepts of the dye sensitized solar cells. The first part of the thesis describes the development of an efficient organic chromophore for dye sensitized solar cells. LÄS MER

3. 22. Synthesis of biologically active oligosaccharides of the Lewis b family and investigations towards the synthesis of glycoclusters

   Författare :Linnéa Skantz; Martina Lahmann; Thisbe Lindhorst; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbohydrates; Lewis b; lactosamine; dendrimers; oxazolidinone; Organic synthesis; Organisk syntes; organisk kemi; Organic Chemistry;

   Sammanfattning : The gastric pathogen Helicobacter pylori is a Gram negative bacterium which may cause diseases such as peptic ulceration and gastric adenocarcinoma. It colonises a host by attaching to the gastric epithelial cells, an attachment mediated by outer membrane proteins on the bacterial surface, e.g, the blood group antigen binding adhesin, BabA. LÄS MER

4. 23. Solid-phase glycoconjugate synthesis : on-resin analysis with gel-phase ¹9F NMR spectroscopy

   Författare :Mickael Mogemark; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Solid-phase synthesis; protective groups; linkers; monitoring; gel-phase; 19F NMR spectroscopy; carbohydrates; oligosaccharides; glycopeptides; Organisk kemi; Organic chemistry; Organisk kemi;

   Sammanfattning : An efficient and versatile non-destructive method to analyze the progress of solid-phase glycoconjugate synthesis with gel-phase 19F NMR spectroscopy is described. The method relies on use of fluorinated linkers and building blocks carrying fluorinated protective groups. LÄS MER

5. 24. Combinatorial Synthesis of Pilicides

   Författare :Anette Svensson; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gel-phase 19F NMR spectroscopy; fluorinated linkers; E. coli bacteria; pilicides; combinatorial chemistry; solid-phase synthesis; Organic chemistry; Organisk kemi;

   Sammanfattning : This thesis describes a combinatorial approach to design and synthesis of three libraries of compounds, referred to as pilicides, designed to target periplasmic chaperones present in uropathogenic Escherichia coli bacteria that are the main cause of urinary tract infections. Periplasmic chaperones are required for assembly of adhesive organelles, i. LÄS MER

7. 25. Synthesis of Organoboronic Acids and Applications in Asymmetric Organocatalysis

   Författare :Sybrand Jonker; Kálmán Szabó; Jörg Pietruszka; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Boronic acid; BINOL; allylboration; propargylation; homologation; stereoselective synthesis; asymmetric synthesis; organocatalysis; allylboronic acid; allenylboronic acid; organisk kemi; Organic Chemistry;

   Sammanfattning : Allyl- and allenylboronic acids are valuable reagents in organic synthesis due to their configurational stability and high reactivity. Few allyl- and allenylboronates are commercially available. Therefore, both the preparation and synthetic application of these organoboronic acids are subjects of study. LÄS MER