Dienes as chiral templates: easy access to pure (2S,3S,4R)-4-hydroxy-2,3-epoxycyclohex-5-en-1-one
作者:Antony Mauvais、Ekkehard Winterfeldt
DOI:10.1016/s0040-4020(01)87948-5
日期:1993.6
The title compound 6 was obtained stereospecifically through a concise sequence including a Diels-Alder reaction with the chiral diene 2 and the retro reaction. The Favorskiirearrangement starting from the intermediate epoxide 4 was found to be regioselective.
Regio- and Stereoselective Reduction of Diketones and Oxidation of Diols by Biocatalytic Hydrogen Transfer
作者:Klaus Edegger、Wolfgang Stampfer、Birgit Seisser、Kurt Faber、Sandra F. Mayer、Reinhold Oehrlein、Andreas Hafner、Wolfgang Kroutil
DOI:10.1002/ejoc.200500839
日期:2006.4
The asymmetric reduction of symmetrical and nonsymmetrical diketones as well as the stereoselectiveoxidation of various diols by biocatalytic hydrogen transfer was investigated by employing lyophilized cells of Rhodococcus ruber DSM 44541 containing alcohol dehydrogense ADH-‘A’. Symmetrical and nonsymmetrical diketones at the (ω-1)- and (ω-2)-positions are reduced to the Prelog product with high stereopreference
Reductive biotransformation of carbonyl compounds—application of fungus, Geotrichum sp. G38 in organic synthesis
作者:Gu Jian-Xin、Li Zu-Yi、Lin Guo-Qiang
DOI:10.1016/s0040-4020(01)87947-3
日期:1993.6
The microbial transformation of 2- and 3-oxo esters and diketones with Geotrichum sp. G38 and its application to the syntheses of the key intermediates of several bioactive compounds such as (R)-denopamine 8, (R)-fluoxetine 11 and (2S, 3R)-sitophilate 14 were described.