Sökning: "stereoselective reductions"

Hittade 3 avhandlingar innehållade orden stereoselective reductions.

  1. 1. Synthesis and Studies of NADH Models: Stereoselective Reductions and Host-Guest Properties

    Författare :Ulrik Gran; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; synthesis; NADH model; host-guest complex; stereoselective reductions; macrocyclic; reducing agent;

    Sammanfattning : The aim of the project has been to synthesise macrocyclic NADH models and to study them as reducing agents and hosts. Three types of macrocyclic NADH models have been synthesised. They consist of the same subunits; a chiral unit, a nicotinamide unit and an aromatic spacer. LÄS MER

  3. 2. Engineered Yeast as Biocatalyst for Stereoselective reductions of Dicarbonyl Compounds

    Författare :Ted Johanson; Teknisk mikrobiologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chiral; screening; process optimisation; metabolic engineering; dicarbonyl; biocatalysis; yeast; bioreduction; Biotechnology; Bioteknik;

    Sammanfattning : Chiral building blocks are needed in the chemical and pharmaceutical industries for the production of fine chemicals and pharmaceuticals. The utilisation of microorganisms and enzymes to perform stereoselective reductions of carbonyl compounds is an efficient and widely applied method for the generation of chiral molecules. LÄS MER

  4. 3. Biocatalysed redox reactions in aqueous and organic media

    Författare :Mats Andersson; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PLS; coenzyme regeneration; bioelectrocatalysis; hydrogenase; chloroperoxidase; HLADH; Proteus vulgaris; Alcaligenes eutrophus; artificial electron mediator; D- S _chlorolactic acid; Biotechnology; Bioteknik;

    Sammanfattning : This thesis deals mainly with biocatalysed methods for stereoselective reduction. D-(S)-chlorolactic acid was produced by both microbial and electromicrobial reduction of chloropyruvate using whole cells of Proteus vulgaris and an artificial electron mediator. The electron donor was formate, hydrogen gas or the cathode in an electrochemical cell. LÄS MER