CH OH O H CHOH OH OH CH OH H OH OH OH H/C=O (IV)α-D-葡萄糖 OH OH H/C=O B CHOH H OH OH H OH O OH OH H (工) OH (V)β-D-葡萄糖 rganIc C emIstryOH OH OH H H H OH H CH2 OH H O OH OH OH H H H OH H CH2 OH H O OH OH OH H H H OH H OH OH OH OH H H H OH H OH CH2 OH CH2 OH C C O O (Ⅱ) (Ⅲ) (Ⅳ) (Ⅴ) α -D - 葡 萄糖 β -D - 葡 萄糖 A B A