A chemoselective oxidation of monosubstituted ethylene glycol: facile synthesis of optically active α-hydroxy acids
作者:Kiran Chinthapally、Sundarababu Baskaran
DOI:10.1039/c4ob00601a
日期:——
A mild and efficient method for the synthesis of optically active α-hydroxy acids through chemoselective oxidation of monosubstitutedethylene glycols using the TEMPO–NaOCl reagent system is described. It is evident from our studies that the solvent, pH and reaction temperature are very crucial for the success of this oxidation. The versatility of this method has been demonstrated with a variety of
Biocatalytic racemization of α-hydroxycarboxylic acids using a stereo-complementary pair of α-hydroxycarboxylic acid dehydrogenases
作者:Anne Bodlenner、Silvia M. Glueck、Bettina M. Nestl、Christian C. Gruber、Nina Baudendistel、Bernhard Hauer、Wolfgang Kroutil、Kurt Faber
DOI:10.1016/j.tet.2009.06.051
日期:2009.9
Biocatalyticracemization of aliphatic, (aryl)aliphatic and aromatic α-hydroxycarboxylicacids was achieved via a reversible oxidation-reductionsequence using a pair of stereo-complementary Prelog- and anti-Prelog d- and l-α-hydroxyisocaproate dehydrogenases from Lactobacillus confusus DSM 20196 and Lactobacillus paracasei DSM 20008, resp., overexpressed in Escherichia coli. The mild reaction conditions