GlcA(b1-3)GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha

• 分子结构分类: 有机化合物 - 有机聚合物 - 多糖
• 英文名称: GlcA(b1-3)GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha
• 英文别名: (2S,3S,4S,5R,6R)-6-[(2S,3R,4S,5R,6S)-2-carboxy-6-[(2S,3R,4R,5R,6S)-2-[(2S,3R,4R,5R,6S)-2-carboxy-6-[(2S,3R,4R,5R,6S)-2-[(2S,3R,4R,5R,6S)-2-carboxy-6-[(2S,3R,4R,5R,6S)-2-[(2S,3R,4R,5R,6S)-2-carboxy-4-[(2R,3R,4S,5S,6S)-6-carboxy-3,4,5-trihydroxyoxan-2-yl]oxy-5-hydroxy-6-[(3R,4R,5R,6S)-2,4,5-trihydroxy-6-methyloxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-6-methyloxan-3-yl]oxy-4-[(2R,3R,4S,5S,6S)-6-carboxy-3,4,5-trihydroxyoxan-2-yl]oxy-5-hydroxyoxan-3-yl]oxy-4,5-dihydroxy-6-methyloxan-3-yl]oxy-4-[(2R,3R,4S,5S,6S)-6-carboxy-3,4,5-trihydroxyoxan-2-yl]oxy-5-hydroxyoxan-3-yl]oxy-4,5-dihydroxy-6-methyloxan-3-yl]oxy-3,5-dihydroxyoxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid
• 化学式: C₇₂H₁₀₆O₆₅
• 分子量: 2011.59
• InChiKey: SHQPLGXOKWKSMQ-ZQEYECOLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -17.8
• 重原子数：
  137
• 可旋转键数：
  30
• 环数：
  12.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  1040
• 氢给体数：
  34
• 氢受体数：
  65

反应信息

• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 在 硫酸 作用下， 反应 2.0h， 生成 O-β-(D-glucopyranosyluronic acid)-(1-3)-O-α-(D-galactopyranosyluronic acid)-(1-2)-O-α-L-rhamnopyranosyl(1-4)--O-α-(D-galactopyranosyluronic acid)-(1-2)-L-rhamnopyranose 、 GlcA(b1-3)GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha 、 GlcA(b1-3)GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha(a1-4)[GlcA(b1-3)]GalA(a1-2)Rha 、 β-D-GlcA(p)1-3-α-D-GalA(p)1-2-L-Rha(p)
  参考文献：
  名称：

  Plant mucilages. XXIV. The structural features of althaea-mucilage O, a representative mucous polysaccharide from the roots of Althaea officinalis.

  摘要：

  Partial acid hydrolysis of Althaea-mucilage O, a representative mucous polysaccharide isolated from the roots of Althaea officinalis L., led to the isolation of five oligosaccharides. Analysis of their components, as well as reduction and methylation, and partial degradation studies showed that these oligosaccharides are O-α-(D-galactopyranosyluronic acid)-(1→2)-L-rhamnopyranose, O-β-(D-glucopyranosyluronic acid)-(1→3)-O-α-(D-galactopyranosyluronic acid)-(1→2)-L-rhamnopyranose, and the hexasaccharide, the nonasaccharide, and the dodecasaccharide composed of a repeating unit having the structure of the trisaccharide through position 4 of the D-galacturonic acid residue. The polysaccharide was also subjected to chromium trioxide oxidation, and to controlled Smith degradation. The configuration and the mode of branching were determined. The structural features of the mucilage are discussed.

  DOI：

  10.1248/cpb.28.824

文献信息

• Plant mucilages. XXIV. The structural features of althaea-mucilage O, a representative mucous polysaccharide from the roots of Althaea officinalis.
  作者：MASASHI TOMODA、NORIKO SATOH、KAZUYO SHIMADA

  DOI：10.1248/cpb.28.824

  日期：——

  Partial acid hydrolysis of Althaea-mucilage O, a representative mucous polysaccharide isolated from the roots of Althaea officinalis L., led to the isolation of five oligosaccharides. Analysis of their components, as well as reduction and methylation, and partial degradation studies showed that these oligosaccharides are O-α-(D-galactopyranosyluronic acid)-(1→2)-L-rhamnopyranose, O-β-(D-glucopyranosyluronic acid)-(1→3)-O-α-(D-galactopyranosyluronic acid)-(1→2)-L-rhamnopyranose, and the hexasaccharide, the nonasaccharide, and the dodecasaccharide composed of a repeating unit having the structure of the trisaccharide through position 4 of the D-galacturonic acid residue. The polysaccharide was also subjected to chromium trioxide oxidation, and to controlled Smith degradation. The configuration and the mode of branching were determined. The structural features of the mucilage are discussed.