Asymmetric bioreduction of α,β-unsaturated nitriles and ketones

Abstract Two applications for the asymmetric reduction of activated alkenes employing isolated enoate reductases are reported. A series of α,β-unsaturated nitriles were shown to be converted to the optically active nitrile products in high yields and excellent enantioselectivities (up to 99% ee). In addition, the reduction of 2,3-disubstituted cyclopentenones was shown to provide almost exclusively trans -2,3-disubstituted cyclopentanones in high yield and enantiopurity (94% ee).

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