lOH,C HOH,C HO HO HO、H OH OH HO OH OH H α-D-(十)-吡喃葡萄糖β3JD-(+)吡喃葡萄糖α-D-(+)-吡喃葡萄糖 β-D-(+)-吡喃葡萄糖 O H HO H HO H HOH2C H OH OH H O H HO H HO H HOH2C H OH H OH