Deracemization by simultaneous bio-oxidative kinetic resolution and stereoinversion.

Deracemization by simultaneous bio-oxidative kinetic resolution and stereoinversion.
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DOI:
10.1002/anie.201400027
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发表时间:
2014-04-01
影响因子:
16.6
通讯作者:
Kroutil, Wolfgang
Kroutil, Wolfgang
中科院分区:
化学1区
文献类型:
--
作者:
Schrittwieser, Joerg H.;Groenendaal, Bas;Resch, Verena;Ghislieri, Diego;Wallner, Silvia;Fischereder, Eva-Maria;Fuchs, Elisabeth;Grischek, Barbara;Sattler, Johann H.;Macheroux, Peter;Turner, Nicholas J.;Kroutil, Wolfgang

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Deracemization, that is, the transformation of a racemate into a single product enantiomer with theoretically 100 % conversion and 100 % ee, is an appealing but also challenging option for asymmetric synthesis. Herein a novel chemo-enzymatic deracemization concept by a cascade is described: the pathway involves two enantioselective oxidation steps and one non-stereoselective reduction step, enabling stereoinversion and a simultaneous kinetic resolution. The concept was exemplified for the transformation of rac-benzylisoquinolines to optically pure (S)-berbines. The racemic substrates were transformed to optically pure products (ee>97 %) with up to 98 % conversion and up to 88 % yield of isolated product.
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