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Chem Pharm Bull (Tokyo). 2012;60(9):1220-3.

A chemo-enzymatic expeditious route to racemic dihexanoyl (2R*,3R*,4R*)-dehydroxymethylepoxyquinomycin (DHMEQ), the precursor for lipase-catalyzed synthesis of the potent nuclear factor-κB inhibitor, (2S,3S,4S)-DHMEQ.

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  • 1Department of Pharmaceutical Science, Keio University, 1-5-30 Shibakoen, Tokyo 105-8512, Japan.


In order to synthesize the potent nuclear factor (NF)-κB inhibitor, (2S,3S,4S)-dehydroxymethylepoxyquinomycin (DHMEQ), in a large scale, a new route for its corresponding racemic precursor, dihexanoyl (2R*,3R*,4R*)-DHMEQ, was developed. By employing both hydroquinone and benzoquinone intermediates, the total yield, reproducibility, and synthetic steps were improved and the synthetic cost was reduced.

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