CH,OH CH,OH HCOH CH,OH CH,OH HOCH HCOH D-核酮糖 D木酮糖 C=O HOC HCOH HCOH HCOH CH,OH D-阿洛酮糖 D果糖 梨糖 D塔洛酮糖 H,OH CH,OH CH,OH CH,OH CH,OH CH,OH CH,OH CH,OH 0 =0 HCOH HOCH HCOH HOCH HCOH HCOH HCOHHCOHHCOH HCOH HOCH HOCHHOCH HOCH COH OH HCOHHCOHHCOHHCOH OH CH,OH CH2OH CH,OH D阿洛D景天D葡萄D甘露D古洛D艾杜D半乳D塔洛 庚酮糖庚酮糖庚酮糖庚酮糖庚酮糖庚酮糖庚酮糖庚酮糖 图1-2D酮糖的关系图144 CH2OH C O CH2OH 二羟丙酮 CH2OH C O CH2OH HCOH 赤藓酮糖 CH2OH C O CH2OH HCOH HCOH D-核酮糖 CH2OH C O CH2OH HOCH HCOH D-木酮糖 CH2OH C O CH2OH HCOH HCOH D-阿洛酮糖 HCOH CH2OH C O CH2OH HOCH HCOH HCOH D-果糖 CH2OH C O CH2OH HCOH HOCH HCOH D-山梨糖 CH2OH C O CH2OH HOCH HOCH HCOH D-塔洛酮糖 CH2OH C O CH2OH HCOH HCOH HCOH HCOH D-阿洛 庚酮糖 CH2OH C O CH2OH HOCH HCOH HCOH HCOH D-景天 庚酮糖 CH2OH C O CH2OH HCOH HOCH HCOH HCOH D-葡萄 庚酮糖 CH2OH C O CH2OH HOCH HOCH HCOH HCOH D-甘露 庚酮糖 CH2OH C O CH2OH HCOH HCOH HOCH HCOH D-古洛 庚酮糖 CH2OH C O CH2OH HOCH HCOH HOCH HCOH D-艾杜 庚酮糖 CH2OH C O CH2OH HCOH HOCH HOCH HCOH D-半乳 庚酮糖 CH2OH C O CH2OH HOCH HOCH HOCH HCOH D-塔洛 庚酮糖 图 1-2 D-酮糖的关系图