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9 results on '"Abraham, Wolf-Rainer"'

2. Microbiological Transformation of Silicon Compounds: Enantioselective Reduction of Trimethylsilylalkyl Acetoacetates and their Carba-Analogues

Author

Tacke, Reinhold, Linoh, Haryanto, Stumpf, Burghard, Abraham, Wolf-Rainer, Kieslich, Klaus, and Ernst, Ludger

Subjects
ddc:546
Abstract

The trimethylsilylalkyl acetoacetates 1 b and 2 b as well as their carba analogues 1 a and 2 a have been reduced microbiologically by Kloeckera corticis (ATCC 20109), leading to the corresponding ( + )-3(S)-hydroxybutanoates 3b, 4b, 3a, and 4a. The enantiomeric purity was found to be 80% (3a, 3b, 4b) and 65% (4a), respectively. The reduction of lb and 2b is - to our knowledge - the first example for a controlled microbiological transformation of organosilicon substrates.

Published
1983

3. Terpen-derivate aus Senecio-arten

Author

Bohlmann, Ferdinand, Knoll, Karl-Heinz, Zdero, Christa, Mahanta, Pradip Kumar, Grenz, Michael, Suwita, Albert, Ehlers, Dorothea, Van, Ngo Le, Abraham, Wolf-Rainer, and Natu, Arvind Anant

Published
1977
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