CHO CHO CHO CH2OH CH2OH H-C-OH H-C-OH HO-C-H H-C=0 H-C=0 HO-C-H HO-C-H HO-C-H HO-C-H HO-C-H H-C-OH HO-C-H H-C-OH H-C-OH H-C-OH H-C-OH H-C-OH H-C-OH H-C-OH HO-C-H CH2OH CH2OH CH2OH CH2OH CH2OH D-葡萄糖 D半乳糖 D-甘露糖 D-果糖 L-山梨糖 奥 主要的己糖 思 超 主要的己糖 CHO C C C C H OH HO H H OH CH2OH H OH CHO C C C C HO H HO H H OH CH2OH H OH CHO C C C C H OH HO H HO H CH2OH H OH CH2OH C C C C H OH HO H H O CH2OH H OH CH2OH C C C C H OH HO H H O CH2OH HO H D-葡萄糖 D-半乳糖 D-甘露糖 D-果糖 L-山梨糖