Search for dissertations about: "NATURAL SCIENCES Chemistry Organic chemistry Pharmaceutical chemistry"

Showing result 16 - 20 of 40 swedish dissertations containing the words NATURAL SCIENCES Chemistry Organic chemistry Pharmaceutical chemistry.

  1. 16. Characterization of Secondary Metabolites from Natural Sources

    Author : Gilda Erosa; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bourreria pulchra; Heliotropium angiospermum; medicinal plants; Cylindrocarpon; Ripartites metrodii; natural products; Ripartites tricholoma; Sideroxylon foetidissimum.;

    Abstract : Natural products have contributed for many years to the development of new medicines for the treatment of diseases. Their structural diversity and complexity have inspired chemists to produce interesting compounds with pharmaceutical use. READ MORE

  2. 17. Computational Studies of Transition Metal-Catalyzed Asymmetric Transfer Hydrogenation Reactions

    Author : Mikael Nordin; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; organisk kemi; Organic Chemistry;

    Abstract : This thesis is based on two studies dealing with the computational investigation of asymmetric transfer hydrogenation reactions, in which hydrogen is transferred from a donor molecule (e.g. alcohol) to a substrate (ketone), via mediation of a metal-ligand catalyst complex. READ MORE

  3. 18. Palladium(II)-Catalyzed Oxidative Carbocyclization/Functionalization of Allenynes

    Author : Teresa Bartholomeyzik; Jan-Erling Bäckvall; Diego J. Cárdenas; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; palladium catalysis; oxidation; carbocyclization; allenynes; boron reagents; kinetics; selectivity; reaction mechanism; organisk kemi; Organic Chemistry;

    Abstract : The selective formation of carbon-carbon bonds constitutes a key transformation in organic synthesis with useful applications in pharmaceutical or material industry. A particularly versatile tool for carbon-carbon as well as carbon-heteroatom bond formation is palladium catalysis, which allows for mild and selective routes even towards complex structures. READ MORE

  4. 19. Experimental Designs at the Crossroads of Drug Discovery

    Author : Ing-Marie Olsson; Svante Wold; Johan Gottfries; Michael Sjöström; Bo Nordén; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemometrics; Design of experiments; Experimental design; Multivariate data-analysis; D-optimal design; 96-well technology; Drug discovery; Assay optimisation; QSAR; Organic chemistry; Organisk kemi;

    Abstract : New techniques and approaches for organic synthesis, purification and biological testing are enabling pharmaceutical industries to produce and test increasing numbers of compounds every year. Surprisingly, this has not led to more new drugs reaching the market, prompting two questions – why is there not a better correlation between their efforts and output, and can it be improved? One possible way to make the drug discovery process more efficient is to ensure, at an early stage, that the tested compounds are diverse, representative and of high quality. READ MORE

  5. 20. Transition metal-catalyzed allylic and vinylic functionalization : Method development and mechanistic investigations

    Author : Johanna M. Larsson; Kálmán J. Szabó; Dennis G. Hall; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; palladium; copper; catalysis; Heck reaction; C-H functionalization; allylic substitution; silylation; borylation; trifluoromethylation; fluorination; mechanistic study; transition metal; alkene; allylic silane; allylic boronate; allylic fluoride; organisk kemi; Organic Chemistry;

    Abstract : The use of small molecule building blocks in, for example, pharmaceutical research and new material development, creates a need for new and improved organic synthesis methods. The use of transition metals as mediators and catalysts opens up new reaction pathways that have made the synthesis of completely new compounds possible as well as greatly improved the synthetic routes to known compounds. READ MORE