Enantioselective syntheses of (S)- and (R)-3-hydroxypyrrolidin-2-ones via lactate dehydrogenase catalysed reductions of 4-benzyloxycarbonylamino-2-oxobutanoic acid
Abstract
The first examples of the BS- and SE-lactate dehydrogenase catalysed reductions of an α-keto acid incorporating a nitrogen containing function in the side chain are described: (S)- and (R)-benzyloxycarbonylamino-2-hydroxybutanoic acids were prepared in good yield and excellent enantioselectivities and were converted to the (S)- and (R)-3-hydroxypyrrolidin-2-ones respectively.