Several routes for the synthesis of 5-deoxy-D-xylo-hexose have been investigated. Hydrogen in the presence of Raney nickel which had been stirred with an acidic ion-exchange resin converted 5,6-anhydro-1,2-O-isopropyl-idene-α-D-glucofuranose into a mixture of 6-deoxy-1,2-O-isopropylidene-α-D-glucofuranose and 5-deoxy-1,2-O-isopropylidene-α-D-xylo-hexofuranose. Contrary to a previous report, it has
5-脱氧的合成几种途径d -
木糖-hexose进行了研究。在阮内
镍的存在下,将氢与酸性离子交换
树脂一起搅拌,将5,6-脱
水-1,2 - O-异丙基-亚烷基-α -
D-葡萄糖呋喃糖转化为6-脱氧-1的混合物, 2- ø异亚丙基α- d -glucofuranose和5-脱氧-1,2- ö异亚丙基α- d -
低聚木糖-hexofuranose。与先前的报告相反,已显示
氢化铝锂对6 - O-苯甲酰基-1,2- O-异亚丙基-5- O-
甲苯磺酰基-α- D的作用-glucofuranose给出主要结晶5-脱氧-1,2- ö异亚丙基α- d -
低聚木糖-hexofuranose,虽然有人色谱一些6-脱氧-1,2-所示ö异亚丙基β-大号-idofuranose是也形成了。用α-甲
苯硫醇钠处理6 - O-苯甲酰基-1,2- O-异亚丙基-5- O-
甲苯磺酰基-α-
D-葡萄糖呋喃糖,得到6 - S-苄基-1