| 1236193-55-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• CAS: 1236193-55-7
• 化学式: C₄₇H₅₀O₁₁
• 分子量: 790.907
• InChiKey: POMZIVRRWCYZOT-LZLJZEHGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.31
• 重原子数：
  58.0
• 可旋转键数：
  20.0
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.34
• 拓扑面积：
  109.37
• 氢给体数：
  0.0
• 氢受体数：
  11.0

反应信息

• 作为产物：
  描述：

  p-tolyl 2,3-O-dibenzyl-5-O-(4-methoxybenzyl)-1-thio-α-D-arabinofuranoside 、 methyl 5-O-benzoyl-3-O-benzyl-α-D-arabinofuranoside 在 N-碘代丁二酰亚胺 、 silver trifluoromethanesulfonate 作用下， 以 二氯甲烷 为溶剂， 反应 0.5h， 生成 、
  参考文献：
  名称：

  Probing the Effect of Acylation on Arabinofuranose Ring Conformation in Di- and Trisaccharide Fragments of Mycobacterial Arabinogalactan

  摘要：

  A major component of the cell wall of mycobacteria is the mycolyl-arabinogalactan (mAG) complex. The arabinose and galactose residues in mAG are found solely in the furanose form, and it has been suggested that the flexibility of these five-membered rings allows for the tight packing of mycolic acids. In order to probe the "flexible scaffold hypothesis", we designed and synthesized glycolipids 3-6 and 8-11 as simple models of the terminal portion of mAG. A set of donors and acceptors were explored for preparing the key beta-(1 -> 2) linkage in 2-6, and the best selectivity and yield can be obtained by using the electron-rich thioglycoside donor 14 and the O-5 p-methoxybenzyl-protected acceptor 17. Both alpha-linkages in the trisaccharides 7-11 were formed in a one-pot reaction. The conformations of compounds 2-11 were studied using solution-state NMR spectroscopy, but little change was observed in the coupling constants for the ring protons between 2 and 3-6 or between 7 and 8-11. However, the rotamer populations about the C-4-C-5 bond for the beta-linked ring in disaccharide 2 did change upon acylation at O-5.

  DOI：

  10.1021/jo100575a