摘要:
锇酸与 6,8-dioxabicyclo[3.2.1]oct-3-ene (1) 反应得到 1,6-anhydro-4-deoxy-β-DL-ribo-hexopyranose (3, R = H)水解为 4-脱氧-α,β-DL-核糖-吡喃己糖 (4, R = H)。1 转化为 1,6:2,3-二脱水-4-脱氧-β-DL-核糖-吡喃己糖 (5),然后用氢化铝锂处理 5,得到 1,6-脱水-3,4-二脱氧-β-DL-赤型-吡喃己糖 (6, R = H),然后将其水解为 3,4-二脱氧-α,β-DL-赤型-吡喃己糖 (7, R = H)。锇酸的反应与 6,8-dioxabicyclo[3.2.1]oct-2-ene (2) 生成 1,6-anhydro-2-deoxy-β-DL-riob-hexopyranose (8, R = H),将其水解为 2 -脱氧-DL-riob-吡喃己糖(9,R =