[α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-[α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-[β-D-galactopyranosyl-(1->2)-α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-D-glucopyranose

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: [α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-[α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-[β-D-galactopyranosyl-(1->2)-α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-D-glucopyranose
• 英文别名: Xyl(a1-6)Glc(b1-4)[Xyl(a1-6)]Glc(b1-4)[Gal(b1-2)Xyl(a1-6)]Glc(b1-4)Glc；(2S,3R,4S,5R,6R)-2-[(2R,3R,4S,5R)-2-[[(2R,3S,4R,5R,6S)-3-[(2S,3R,4R,5S,6R)-3,4-dihydroxy-6-[[(2R,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxymethyl]-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-[[(2R,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxymethyl]oxan-2-yl]oxyoxan-2-yl]oxy-4,5-dihydroxy-6-[(2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-2-yl]methoxy]-4,5-dihydroxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
• 化学式: C₄₅H₇₆O₃₈
• 分子量: 1225.08
• InChiKey: UJNIQUVNFJIFMG-HAPMVKCTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -15.8
• 重原子数：
  83
• 可旋转键数：
  19
• 环数：
  8.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  604
• 氢给体数：
  23
• 氢受体数：
  38

反应信息

• 作为产物：
  描述：

  [(2,3,4-tri-O-acetyl-α-D-xylopyranosyl)-(1->6)]-(2,3,4-tri-O-acetyl-β-D-glucopyranosyl)-(1->4)-[(2,3,4-tri-O-acetyl-α-D-xylopyranosyl)-(1->6)]-(2,3-di-O-acetyl-β-D-glucopyranosyl)-(1->4)-[(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->2)-(3,4-di-O-acetyl-α-D-xylopyranosyl)-(1->6)]-(2,3-di-O-acetyl-β-D-glucopyranosyl)-(1->4)-1,2,3,6-tetra-O-acetyl-α, β-D-glucopyranose 在 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 12.0h， 以75%的产率得到[α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-[α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-[β-D-galactopyranosyl-(1->2)-α-D-xylopyranosyl-(1->6)]-β-D-glucopyranosyl-(1->4)-D-glucopyranose
  参考文献：
  名称：

  Chemo-enzymatic synthesis of xylogluco-oligosaccharides and their interactions with cellulose

  摘要：

  A novel class of complex oligosaccharides with a backbone made of twelve beta-(1 -> 4)-D-glucosyl units that may be regularly substituted on their primary position with alpha-D-xylosyl or beta-D-(1 -> 2)-galactosyl-alpha-D-xylosyl residues were readily synthesized using enzymatic hydrolysis of the plant polysaccharide xyloglucan (XG), followed by chemical modifications of the well-defined oligosaccharides and their enzymatic coupling catalyzed by the Cel7B E197A glycosynthase from Humicola insolens. These complex oligosaccharides proved useful for a better understanding of the effects of structural variation of xyloglucan on interactions with bacterial microcrystalline cellulose (BMCC). (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carbpol.2011.11.085