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Enantioselective reductions of ethyl 3-oxobutanoates with fermenting cells or acetone treated cells of Geotrichum candidum gave 3-hydroxyesters with different ee and different predominant configurations depending on reaction conditions. Ethyl 4-bromo-3-oxobutanoate was reduced with APG4 and NADH to give predominantly ethyl (R)-4-bromo-3 hydroxybutanoate while the (S)-configuration was predominant...
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