1,3:1,4-β-glucotetraose A | 115721-44-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1,3:1,4-β-glucotetraose A
• 英文别名: (2S,3R,4S,5S,6R)-2-[(2S,3R,4S,5R,6R)-2-[(2R,3S,4R,5R,6S)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2R,3S,4R,5R,6R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
• CAS: 115721-44-3
• 化学式: C₂₄H₄₂O₂₁
• 分子量: 666.585
• InChiKey: DRMABKCEUIQDFK-CZXFBRFRSA-N

物化性质

• 沸点：
  1047.1±65.0 °C(predicted)
• 密度：
  1.83±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -8.5
• 重原子数：
  45
• 可旋转键数：
  10
• 环数：
  4.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  348
• 氢给体数：
  14
• 氢受体数：
  21

反应信息

• 作为产物：
  描述：

  纤维素二糖 、 3-O-β-D-glucopyranosyl-β-D-glucopyranosyl fluoride 在 recombinant Bacillus licheniformis (1->3,1->4)-β-D-glucan 4-glucanohydrolase (EC 3.2.1.73) 、 sodium maleate buffer 、 calcium chloride 作用下， 以 乙腈 为溶剂， 反应 0.33h， 生成 1,3:1,4-β-glucotetraose A 、 O-β-D-glucopyranosyl-(1-3)-O-β-D-glucopyranosyl-(1-4)-O-β-D-glucopyranosyl-(1-4)-α-D-glucopyranose
  参考文献：
  名称：

  Chemoenzymic synthesis of (1→3,1→4)-β-D-glucooligosaccharides for subsite mapping of (1→3,1→4)-β-D-glucan endohydrolases

  摘要：

  一系列未取代的(1→3,1→4)-β-D-葡萄糖寡糖被合成，用于亚位点的映射，以确定植物和细菌(1→3,1→4)-β-D-葡聚糖4-葡聚糖水解酶（EC 3.2.1.73）在各个亚位点的葡萄糖结合亚位点的数量以及亚位点结合/过渡态激活亲和力。这些寡糖是通过化学和酶促程序合成的。使用来自枯草芽孢杆菌的重组(1→3,1→4)-β-D-葡聚糖4-葡聚糖水解酶在有机介质中催化3-O-β-D-葡萄糖基-β-D-葡萄糖基氟化物（Glcβ3GlcβF，化合物1）与纤双糖（Glcβ4Glc，2）、纤三糖（Glcβ4Glcβ4Glc，3）、纤四糖（Glcβ4Glcβ4Glcβ4Glc，4）和纤五糖（Glcβ4Glcβ4Glcβ4Glcβ4Glc，5）的缩合反应，生成(1→3,1→4)-β-D-葡萄糖寡糖，Glcβ3Glcβ4Glcβ4Glc 6、Glcβ3Glcβ4Glcβ4Glcβ4Glc 7、Glcβ3Glcβ4Glcβ4Glcβ4Glcβ4Glc 8、Glcβ3Glcβ4Glcβ4Glcβ4Glcβ4Glcβ4Glc 9。合成的寡糖6-9的收率为15-45%，与化合物1相比。在第二系列合成中，使用来自嗜热梭菌的纤维二糖磷酸酶（EC 2.4.1.49）将α-D-葡萄糖基磷酸10的葡萄糖基残基顺序转移到三糖Glcβ3Glcβ4Glc 11非还原末端的4位，生成(1→3,1→4)-β-D-葡萄糖寡糖，Glcβ4Glcβ3Glcβ4Glc 12、Glcβ4Glcβ4Glcβ3Glcβ4Glc 13、Glcβ4Glcβ4Glcβ4Glcβ3Glcβ4Glc 14，分别从化合物11中获得14%、10%和5%的产率。

  DOI：

  10.1039/a804711a

文献信息

• Chemoenzymic synthesis of (1→3,1→4)-β-D-glucooligosaccharides for subsite mapping of (1→3,1→4)-β-D-glucan endohydrolases
  作者：Maria Hrmova、Geoffrey B. Fincher、Josep-Luis Viladot、Antoni Planas、Hugues Driguez

  DOI：10.1039/a804711a

  日期：——

  A series of unsubstituted (1→3,1→4)-β-D-glucooligosaccharides, designed for subsite mapping in which the number of glucosyl-binding subsites and the subsite-binding/transition state activation affinities at individual subsites of plant and bacterial (1→3,1→4)-β-D-glucan 4-glucanohydrolases (EC 3.2.1.73) can be determined, has been synthesised through chemical and enzymic procedures. A recombinant (1→3,1→4)-β-D-glucan 4-glucanohydrolase from Bacillus licheniformis has been used in organic media to catalyse the condensation of 3-O-β-D-glucopyranosyl-β-D-glucopyranosyl fluoride (Glcβ3GlcβF, compound 1) with cellobiose (Glcβ4Glc, 2), cellotriose (Glcβ4Glcβ4Glc, 3), cellotetraose (Glcβ4Glcβ4Glcβ4Glc, 4) and cellopentaose (Glcβ4Glcβ4Glcβ4Glcβ4Glc, 5), to produce the (1→3,1→4)-β-D-glucooligosaccharides, Glcβ3Glcβ4Glcβ4Glc 6, Glcβ3Glcβ4Glcβ4Glcβ4Glc 7, Glcβ3Glcβ4Glcβ4Glcβ4Glcβ4Glc 8, Glcβ3Glcβ4Glcβ4Glcβ4Glcβ4Glcβ4Glc 9. Synthesised oligosaccharides 6–9 were isolated in yields of 15–45%, compared with compound 1. In a second series of syntheses, a cellodextrin phosphorylase (EC 2.4.1.49) from Clostridium thermocellum was used to sequentially transfer glucosyl residues from α-D-glucopyranosyl phosphate 10 to the 4-position of the non-reducing terminus of the trisaccharide Glcβ3Glcβ4Glc 11, to generate the (1→3,1→4)-β-D-glucooligosaccharides, Glcβ4Glcβ3Glcβ4Glc 12, Glcβ4Glcβ4Glcβ3Glcβ4Glc 13, Glcβ4Glcβ4Glcβ4Glcβ3Glcβ4Glc 14 in 14, 10 and 5% yield, respectively, from compound 11.

  一系列未取代的(1→3,1→4)-β-D-葡萄糖寡糖被合成，用于亚位点的映射，以确定植物和细菌(1→3,1→4)-β-D-葡聚糖4-葡聚糖水解酶（EC 3.2.1.73）在各个亚位点的葡萄糖结合亚位点的数量以及亚位点结合/过渡态激活亲和力。这些寡糖是通过化学和酶促程序合成的。使用来自枯草芽孢杆菌的重组(1→3,1→4)-β-D-葡聚糖4-葡聚糖水解酶在有机介质中催化3-O-β-D-葡萄糖基-β-D-葡萄糖基氟化物（Glcβ3GlcβF，化合物1）与纤双糖（Glcβ4Glc，2）、纤三糖（Glcβ4Glcβ4Glc，3）、纤四糖（Glcβ4Glcβ4Glcβ4Glc，4）和纤五糖（Glcβ4Glcβ4Glcβ4Glcβ4Glc，5）的缩合反应，生成(1→3,1→4)-β-D-葡萄糖寡糖，Glcβ3Glcβ4Glcβ4Glc 6、Glcβ3Glcβ4Glcβ4Glcβ4Glc 7、Glcβ3Glcβ4Glcβ4Glcβ4Glcβ4Glc 8、Glcβ3Glcβ4Glcβ4Glcβ4Glcβ4Glcβ4Glc 9。合成的寡糖6-9的收率为15-45%，与化合物1相比。在第二系列合成中，使用来自嗜热梭菌的纤维二糖磷酸酶（EC 2.4.1.49）将α-D-葡萄糖基磷酸10的葡萄糖基残基顺序转移到三糖Glcβ3Glcβ4Glc 11非还原末端的4位，生成(1→3,1→4)-β-D-葡萄糖寡糖，Glcβ4Glcβ3Glcβ4Glc 12、Glcβ4Glcβ4Glcβ3Glcβ4Glc 13、Glcβ4Glcβ4Glcβ4Glcβ3Glcβ4Glc 14，分别从化合物11中获得14%、10%和5%的产率。