§17.1单糖的结构、构型和构象 17.1.2 单糖的环状结构 17.1.2.2 Haworth(WN)式 CH2OH CHO CH,OH H-OH OH OH HO- 一H OH OH OH H OH OH OH H-OH OH a-D-葡萄糖36.4% CH2OH B-D-葡萄糖63.4% <0.01% CHgOH H CHgOH CH>OH CH>OH OCH3 OH OH OH OCH3 OH OH OH α-D-甲基葡萄糖苷 阝-D甲基葡萄糖苷 §17.1 单糖的结构、构型和构象 17.1.2 单糖的环状结构 17.1.2.2 Haworth(W N) 式 O OH OCH3 OH OH CH2OH O OH OH OH OH CH2OH H CH3OH α-D-甲基葡萄糖苷 α-D- 葡萄糖 36.4% H CHO OH HO H H OH H OH CH2OH < 0.01 % O OH OH OH OH CH2OH β-D- 葡萄糖 63.4% H CH3OH O OH OCH3 OH OH CH2OH β-D-甲基葡萄糖苷