Phenyllactic acids are found in numerous natural products as well as in active substances used in medicine or plant protection. Enantiomerically pure phenyllactic acids are available by transition-metal-catalyzed hydrogenations or chemoenzymatic reductions of the corresponding 3-aryl-2-oxopropanoic acids. We show here that d-lactate dehydrogenase from Staphylococcus epidermidis reduces a broad spectrum of 2-oxo acids, which are difficult substrates for transition-metal-catalyzed reactions, with excellent enantioselectivities in a simple experimental setup.
Enantioselective Reduction of 3-Aryl-2-oxo-propanoic Acids: A Comparison of Enzymatic and Transition-Metal-Catalyzed Methods
作者:Sebastian Lüttenberg、Tien Dat Ta、Jan von der Heyden、Jürgen Scherkenbeck
DOI:10.1002/ejoc.201201506
日期:2013.3
Phenyllacticacids are important constituents of depsipeptides, which are a large class of natural products expressing a wide range of biological activities. Despite there being several methods for the enantioselective synthesis of α-hydroxy acids, almost no studies are available addressing the substrate selectivity of transition-metal and enzyme-catalyzed methods for the preparation of substituted