2,3,4,6-Tetra-O-benzyl-D-glucopyranose

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,4,6-Tetra-O-benzyl-D-glucopyranose
• 英文别名: (3S,4S,5R,6S)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-ol
• 化学式: C₃₄H₃₆O₆
• 分子量: 540.656
• InChiKey: OGOMAWHSXRDAKZ-ZFFASYSJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5
• 重原子数：
  40
• 可旋转键数：
  13
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  66.4
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2,3,4,6-Tetra-O-benzyl-D-glucopyranose 、 4-溴苯乙酮 在 三乙烯二胺 、 氯化镍二甲氧基乙烷 、 [Ir(dF(CF₃)ppy)₂(dtbbpy)](PF₆) 、 potassium carbonate 、 4,4'-二叔丁基-2,2'-二吡啶 作用下， 以 乙腈 为溶剂， 反应 48.0h， 以65%的产率得到4-acetylphenyl 2,3,4,6-tetra-O-benzyl-α-L-gulopyranoside
  参考文献：
  名称：

  酚醛糖苷的合成：通过双光催化氧化/镍催化糖基糖醇与芳基溴化物的糖基化

  摘要：

  通过在可见光下用Ir [dF（CF 3）ppy] 2（dtbbpy）（PF 6）作为光催化剂在乙腈中用芳基溴化物处理，将多种糖乳糖醇有效地转化为相应的酚类糖苷。在温和的反应条件下，吡喃糖酶和呋喃糖酶甚至二糖都可能遭受这种糖基化方案的影响。可以以中等到良好的产率（高达93％的产率）生产各种苯基糖苷，并且该方案的克级工艺也得到了很好的确立。

  DOI：

  10.1021/acs.joc.8b02129
• 作为产物：
  描述：

  2,3,4,6-tetra-O-benzyl-D-mannono-1,5-lactone 在 三甲基铝 、 二异丁基氢化铝 、 对甲苯磺酸 、 三苯基膦 、 偶氮二甲酸二乙酯 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 、 丙酮 为溶剂， 反应 6.0h， 生成 2,3,4,6-Tetra-O-benzyl-D-glucopyranose
  参考文献：
  名称：

  A Novel and Practical Synthesis of l-Hexoses from d-Glycono-1,5-lactones

  摘要：

  A novel and efficient conversion of D-glycono-1,5-lactones into the corresponding L-sugars is described. The important intermediate, delta-hydroxyalkoxamates, was provided by a practical alkoxyamination of D-glycono-1,5-lactones mediated by Me3Al. In contrast to the preparation of beta-lactam skeletons from beta-hydroxyalkoxamates, the cyclization of delta-hydroxyalkoxamates under Mitsunobu conditions resulted in O-alkylation rather than N-alkylation. It is noteworthy that delta-hydroxyalkoxamates derived from D-mannono-1,5-lactones afforded the O-alkylation product in 91% yield. None of the N-alkylation product was detected in this case. These O-cyclized oximes, in which the inversion of the configuration at C5 was secured, were efficiently converted into the L-sugars.

  DOI：

  10.1021/ja992808t

文献信息

• A Novel and Practical Synthesis of <scp>l</scp>-Hexoses from <scp>d</scp>-Glycono-1,5-lactones
  作者：Hideyo Takahashi、Yuko Hitomi、Yoshinori Iwai、Shiro Ikegami

  DOI：10.1021/ja992808t

  日期：2000.4.1

  A novel and efficient conversion of D-glycono-1,5-lactones into the corresponding L-sugars is described. The important intermediate, delta-hydroxyalkoxamates, was provided by a practical alkoxyamination of D-glycono-1,5-lactones mediated by Me3Al. In contrast to the preparation of beta-lactam skeletons from beta-hydroxyalkoxamates, the cyclization of delta-hydroxyalkoxamates under Mitsunobu conditions resulted in O-alkylation rather than N-alkylation. It is noteworthy that delta-hydroxyalkoxamates derived from D-mannono-1,5-lactones afforded the O-alkylation product in 91% yield. None of the N-alkylation product was detected in this case. These O-cyclized oximes, in which the inversion of the configuration at C5 was secured, were efficiently converted into the L-sugars.
• Synthesis of Phenolic Glycosides: Glycosylation of Sugar Lactols with Aryl Bromides via Dual Photoredox/Ni Catalysis
  作者：Hui Ye、Cong Xiao、Quan-Quan Zhou、Peng George Wang、Wen-Jing Xiao

  DOI：10.1021/acs.joc.8b02129

  日期：2018.11.2

  Multifarious sugar lactols were efficiently transformed into the corresponding phenolic glycosides by treating with aryl bromides in acetonitrile with Ir[dF(CF3)ppy]2(dtbbpy)(PF6) as a photocatalyst under visible light irradiation. Both pyranoses and furanoses or even disaccharide could all suffer this glycosylation protocol under mild reaction conditions. A variety of phenyl glycosides can be produced

  通过在可见光下用Ir [dF（CF 3）ppy] 2（dtbbpy）（PF 6）作为光催化剂在乙腈中用芳基溴化物处理，将多种糖乳糖醇有效地转化为相应的酚类糖苷。在温和的反应条件下，吡喃糖酶和呋喃糖酶甚至二糖都可能遭受这种糖基化方案的影响。可以以中等到良好的产率（高达93％的产率）生产各种苯基糖苷，并且该方案的克级工艺也得到了很好的确立。