methyl 2-O-benzoyl-5,6-O-isopropylidene-β-D-galactofuranoside | 1130008-00-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2-O-benzoyl-5,6-O-isopropylidene-β-D-galactofuranoside
• CAS: 1130008-00-2
• 化学式: C₁₇H₂₂O₇
• 分子量: 338.357
• InChiKey: AWUVSQADNUFDRP-WZYWGQKZSA-N

物化性质

• 沸点：
  471.5±45.0 °C(predicted)
• 密度：
  1.29±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  24.0
• 可旋转键数：
  4.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.59
• 拓扑面积：
  83.45
• 氢给体数：
  1.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  methyl 2-O-benzoyl-5,6-O-isopropylidene-β-D-galactofuranoside 在 吡啶 、 咪唑 、 溶剂黄146 作用下， 以 四氢呋喃 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 10.08h， 生成 methyl 2,5,6-tri-O-benzoyl-β-D-galactofuranoside
  参考文献：
  名称：

  Influence of Silyl Protections on the Anomeric Reactivity of Galactofuranosyl Thioglycosides and Application of the Silylated Thiogalactofuranosides to One-Pot Synthesis of Diverse β-d-Oligogalactofuranosides

  摘要：

  We describe in this paper the tuning effect of silyl protecting groups on the donor reactivity of galactofuranosyl phenyl thioglycosides. Silyl ethers on the galactofuranose ring are found to have an arming effect on the glycosylation reactivity, but the cyclic 3,5-acetal protecting group decreases the reactivity. The reactive phenyl 2,6-di-O-Bz-3,5-di-O-TBS-1-thio-beta-d-galactofuranoside 3 is proved to be a useful glycosyl building block. By taking advantage of this donor, we achieved the highly efficient one-pot solution-phase assembly of a panel of beta-d-galactofuranosyl tri- and tetrasaccharides possessing diverse glycosidic linkages.

  DOI：

  10.1021/jo5018684

文献信息

• Total Synthesis of Marine Glycosphingolipid Vesparioside B
  作者：Peng-Cheng Gao、San-Yong Zhu、Hui Cao、Jin-Song Yang

  DOI：10.1021/jacs.5b12589

  日期：2016.2.10

  The first total synthesis of a major component of marine glycolipid vesparioside B ( Scheme 1 , 1, R1 = n-C22H45, R2 = n-C14H29) has been accomplished through a convergent [4 + 3] coupling strategy. Key steps included stereoselective installment of a set of challenging 1,2-cis-glycoside bonds. A 2-quinolinecarbonyl-assisted α-galactosylation and a novel β-arabinosylation were developed, respectively

  海洋糖脂 vesparioside B 的主要成分的首次全合成（方案 1, 1, R1 = n-C22H45, R2 = n-C14H29）已通过收敛 [4 + 3] 耦合策略完成。关键步骤包括立体选择性安装一组具有挑战性的 1,2-顺式糖苷键。分别开发了 2-喹啉羰基辅助的 α-半乳糖基化和新型 β-阿拉伯糖基化，以合成 α-呋喃半乳糖苷和 β-阿拉伯吡喃糖苷键。此外，4,6-O-亚苄基控制的α-吡喃半乳糖基化反应允许左侧四糖供体2与右侧二糖脂质受体3有效连接，从而导致1的全合成。
• Facile Synthesis of per-<i>O-tert</i>-Butyldimethylsilyl-β-<scp>d</scp>-galactofuranose and Efficient Glycosylation via the Galactofuranosyl Iodide
  作者：Luciana Baldoni、Carla Marino

  DOI：10.1021/jo8025274

  日期：2009.3.6

  The synthesis of crystalline per-O-TBS-beta-D-galactofuranose (4 beta) as a new precursor of D-Galf units is described. Anomeric iodination by reaction with TMSI followed by in situ coupling with simple alcohols and a wide variety of glycosyl acceptors, in the absence of a promoter, was employed as a new efficient glycosylation method for the assembly Of D-galactofuranosyl moieties with high beta-stereoselectivity. Under the mild conditions of this reaction labile protective groups, like acetals, and furanosyl linkages are preserved.