CH,OH CHO CHO CH(OH)3 HO H OH H OH H OH CH,OH CH,OH H OH CHOH D-(+)-甘油醛 D-(+)葡萄糖 D(-)果糖 (glyceraldehyde) ■自然界中存在的糖绝大多数是D型的,P375,表161 CH3 CH3 CHO CHO C H H HO H OH HOH CH2OH D-(-)赤藓糖D-(-)苏阿糖 Erythro threo erythro threo◼ D-(+)-甘油醛 D-(+)葡萄糖 D-(-)-果糖 ◼ 自然界中存在的糖绝大多数是D型的，P375,表16.1 ◼ D-(-)赤藓糖 D-(-)苏阿糖 ◼ Erythro threo erythro threo CHO CH2OH CHO CH2OH H CH3 Cl H HO CH3 OH CH3 Cl H H CH3 H OH CHO CH2OH H OH CH(OH)3 CH2OH CHO CH2OH H OH H OH HO H C O CH2OH (glyceraldehyde)