CDP-4-dehydro-6-deoxy-alpha-D-glucose + NADH + H(+) => CDP-4-dehydro-3,6-dideoxy-alpha-D-glucose + NAD(+) + H2O
cdp-4-dehydro-6-deoxy-alpha-d-glucose + nadh + h(+) => cdp-4-dehydro-3,6-dideoxy-alpha-d-glucose + nad(+) + h2o