D-glucose; cells of Sphingomonas sp. HXN-200 in phosphate buffer T=30°C; pH=8.0; 5 h;

1: tert-butyl azetidine-1-carboxylate With ruthenium(IV) oxide; sodium periodate in tert-butyl alcohol T=20°C; 72 h; 2: diazomethane in methanol; diethyl ether T=20°C; 1 h; Further stages.;