L-arabinobiose

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: L-arabinobiose
• 英文别名: (1<*>5)-α-L-arabinobiose；(1->5)-α-L-arabinofuranobiose；5-O-α-L-arabinofuranosyl-L-arabinofuranose；1,5-α-L-arabinobiose；5-O-α-L-Arabinofuranosyl-L-arabinose；alpha-1,5-L-Arabinobiose；(3R,4R,5S)-5-[[(2R,3R,4R,5S)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]oxymethyl]oxolane-2,3,4-triol
• 化学式: C₁₀H₁₈O₉
• 分子量: 282.248
• InChiKey: HANDMAIZTZRPTQ-PMOQGPMASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -3.5
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  149
• 氢给体数：
  6
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  L-arabinobiose 、 阿魏酸甲酯 在 type-C feruloyl esterase from Sporotrichum thermophile 作用下， 以 various solvents 为溶剂， 反应 96.0h， 以24%的产率得到O-[5-O-(trans-feruloyl)-α-L-arabinofurnosyl]-(1->5)-L-arabinofuranose
  参考文献：
  名称：

  Regioselective esterase-catalyzed feruloylation of l-arabinobiose

  摘要：

  The regioselective chemoenzymatic synthesis of O-[5-O-(trans-feruloyl)-alpha-L-arabinofuranosyl]-(1 -> 5)-L-arabinofuranose has been achieved. The reaction parameters affecting the feruloylation rate and conversion of the enzymatic synthesis, such as the composition of the reaction medium, substrate and enzyme concentration, have been investigated. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2006.05.022
• 作为产物：
  描述：

  (1<*>5)-α-L-arabinotetraose 在 α-L-arabinofuranosidase from Rhizomucor pusillus HHT-1 作用下， 以 phosphate buffer 为溶剂， 生成 L-arabinobiose 、 L-arabinose 、 (1->5)-α-L-arabinofuranotriose
  参考文献：
  名称：

  Substrate specificity of the α-l-arabinofuranosidase from Rhizomucor pusillus HHT-1

  摘要：

  The alpha-L-arabinofuranosidase (AF) from the fungus Rhizomucor pusillus HHT-1 released arabinose at appreciable rates from (1 --> 5)-alpha-L-arabinofuranooligosaccharides, sugar beet arabinan and debranched arabinan. This enzyme preferentially hydrolyzed the terminal arabinofuranosyl residue [alpha-(1-->5)-linked] of the arabinan backbone rather than the arabinosyl side chain [alpha-(1 --> 3)-linked residues]. The enzyme-hydrolyzed arabinan reacted at and debranched the arabinan almost at the same rate, and the degree of conversion for both cases was 65%. Methylation analysis of arabinan showed that the arabinosyl-linkage proportions were 2:2:2:1, respectively, for (1 --> 5)-Araf, T-Araf, (1 --> 3, 5)-Araf and (1 --> 3)-Araf, while the ratios for the AF-digested arabinan shifted to 3:12:1. Enzyme digestion resulted in an increase in the proportion of (1 --> 5)-linked arabinose and a decrease in the proportion of terminal arabinose indicated this AF cleaved the terminal arabinosyl residue of the arabinan back bone [alpha-(1 --> 5)-linked residues]. Peak assignments in the C-13 NMR spectra also confirmed this linkage composition of four kinds of arabinose residues. Both H-1 and C-13 NMR spectra are dominated by signals of the alpha-anomeric configuration of the arabinofuranosyl moieties. No signals were recorded for arabinopyranosyl moieties in the NMR spectra. Methylation and NMR analysis of native and AF-digested arabinan revealed that this alpha-L-arabinofuranosidase can only hydrolyse alpha-L-arabinofuranosyl residues of arabinan. (C) 2003 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(03)00203-9

文献信息

• The acid-labile, peripheral chains of the mucilage of Opuntia ficus-indica
  作者：Donald McGarvie、Haralambos Parolis

  DOI：10.1016/s0008-6215(00)85595-0

  日期：1981.7