A novel one-pot, two-step, two-enzyme cascade is described. Pro-chiral alpha-chloro ketones are stereoselectively reduced to the corresponding halohydrins as an intermediate by a biocatalytic hydrogen transfer process. The intermediate is transformed to the corresponding epoxide by a non-enantioselective halohydrin dehalogenase. Thus, by combining a Prelog- or anti-Prelog alcohol dehydrogenase with a non-selective halohydrin dehalogenase, enantiopure (R)- as well as (S)-epoxides were obtained.
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页码:1399 / 1404
页数:6
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[Anonymous], [No title captured], Patent No. [WO 2004015132 A2, 2004015132]