Further experiments on the oxidation of sugar acetals and thioacetals by Acetobacter suboxydans

The oxidation by Acetobacter suboxydans of d-galactose diethyl dithioacetal and of the dimethyl acetal yielded ketose derivatives in which the hydroxyl group at C-5, and not the one at C-3 as had been expected, had been oxidized to a keto group. 1-Deoxy-d-galactito1 (l-fucitol) yielded both 1-deoxy-d-threo-d-glycero-3-hexulose and 6-deoxy-l-lyxo-hexulose.