1CHO H-2 OH HO 3 H HH OH H H CH2OH H-4 HOCH2 2 CHO H CHO OH 543 H-5 一OH OH OH H OH OH 6CH2OH OH (I) CH2OH (I 0 CH2OH OH H OH H -0H OH OH OH H CHO (IV)a-D-吡葡萄糖 OH CH2OH H OH 0 OH H (III) OH OH ()阝-D-吡葡萄糖 1 2 3 4 5 6 CHO H OH HO H H OH H OH CH2 OH 2 1 5 4 3 6 (I) HOCH2 CHO H OH H OH OH H H OH (II) CH2 OH CHO H OH H OH OH H H OH (III) OH CHO CH2 OH H H OH OH H H OH (IV) α-D- 葡萄糖 吡喃 O H CH2 OH H OH H H OH OH H OH O H CH2 OH H H OH H OH OH H OH (V) β-D- 葡萄糖 吡喃