Search for dissertations about: "racemate"

Showing result 1 - 5 of 14 swedish dissertations containing the word racemate.

  2. 1. Stereoselective Transport of Drugs Across the Blood-Brain Barrier (BBB) In Vivo and In Vitro : Pharmacokinetic and Pharmacodynamic Studies of the (S)- and (R)-Enantiomers of Different 5-HT1A Receptor Agonists and Antagonists

    Author : Hongmei Yan; Lennart Paalzow; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; pindolol; propranolol; 2- di-n-propylamino tetralin; racemate; enantiomer; drug distribution; brain; rat; blood-brain barrier; Neurovetenskap; Neurology; Neurologi; Psychiatry; psykiatri;

    Abstract : Delivery of drugs to the brain requires passage across the blood-brain barrier (BBB). Both for drugs already on the market and for new drugs under development, it is important to know to what extent a drug enters the CNS. Many drugs used clinically are racemic mixtures, i.e. READ MORE

  4. 2. Crystallization of chiral compounds-Possibilities and limitations for resolution by direct crystallization

    Author : Veronica Profir; KTH; []
    Keywords : metastable racemate; nucleation; solvent effect; solubility; direct crystallization; in situ IR spectroscopy; multivariate calibration;

    Abstract : .... READ MORE

  5. 3. A study on pharmacokinetic and pharmacodynamic effects of salbutamol-isomers

    Author : Kerstin Naidu Sjöswärd; Göran Hedenstierna; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Astma är en kronisk inflammatorisk luftvägssjukdom som förekommer i hög - och enligt rapporter ökande - frekvens världen över. Defmitionen av astma inkluderar varierande luftvägsobstruktion och ökad bronkiell reaktivhet gentemot olika stimuli. READ MORE

  6. 4. Pharmacokinetics of the enantiomers of thalidomide

    Author : Tommy Eriksson; Avdelningen för klinisk kemi och farmakologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; protein binding; blood distribution; stereoselective pharamacokinetics; pharmacokinetic modelling; oral administration; intravenous administration; chiral inversion; stereospecific assay; HPLC; Thalidomide; hydroxylated metabolites; enantiomers; in vitro kinetics; sedative effects; concentration-effect relationship.; Pharmacological sciences; pharmacognosy; pharmacy; toxicology; Farmakologi; farmakognosi; farmaci; toxikologi;

    Abstract : Thalidomide has a chiral center and the racemate of (+)-(R) and (-)-(S)-thalidomide was introduced as a hypnotic/sedative drug in 1957. In 1961 it was withdrawn due to teratogenicity and neuropathy. There is a growing interest in thalidomide treatment of immunomodulatory diseases. READ MORE

  7. 5. DNA Binding of Metal Complexes. A Spectroscopic Study of Trigonal Ru(II)phenanthroline Complexes and Uranyl(VI) Ion with Respect to Specific Interactions with DNA

    Author : Catharina Hiort; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; uranyl; nucleic acids; optical probes;

    Abstract : The interaction of metal complexes with nucleic acids has attracted attention owing to their potentials as optical probes, probes of chirality, and for use as artificial restriction enzymes. To understand the underlying mechanisms in these contexts we studied the binding to DNA of the enantiomers of two chiral ruthenium(II) metal complexes ([Ru(phen)3]2+ and [Ru(phen)2]2+DPPZ) phen=1,10-phenanthroline, DPPZ=dipyrido[3,2-a:2',3'-c]phenazine, and of the linear uranium(VI) complex, uranyl ([UO2]2+), using linear dichroism, circular dichroism and luminescence, as well as nuclear magnetic resonance spectroscopy. READ MORE