纤维七糖 | 34620-78-5

• 物质功能分类: 生物化工 - 糖类化合物 - 寡糖
• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 纤维七糖
• 英文名称: O⁴-lin-Hexa[1β]4]-D-glucopyranosyl-D-glucose
• 英文别名: Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)Glc(b1-4)aldehydo-Glc；(2R,3R,4R,5R)-4-[(2S,3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,4-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,3,5,6-tetrahydroxyhexanal
• CAS: 34620-78-5；52646-27-2；146491-19-2
• 化学式: C₄₂H₇₂O₃₆
• 分子量: 1153.01
• InChiKey: ZHZITDGOAFCURV-LKSRXEGDSA-N

物化性质

• 熔点：
  220-222°C
• 沸点：
  1492.7±65.0 °C(Predicted)
• 密度：
  1.85±0.1 g/cm3(Predicted)
• 溶解度：
  甲醇（微溶）、水（微溶）

计算性质

• 辛醇/水分配系数(LogP)：
  -16.43
• 重原子数：
  78.0
• 可旋转键数：
  23.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.98
• 拓扑面积：
  593.12
• 氢给体数：
  23.0
• 氢受体数：
  36.0

安全信息

• WGK Germany：
  3
• 海关编码：
  29400090
• 危险性防范说明：
  P261,P280,P301+P312,P302+P352,P305+P351+P338
• 危险性描述：
  H302,H315,H319,H335

制备方法与用途

生物活性

Maltoheptaose hydrate 是磷酸化酶 B (phosphorylase B) 的活化剂，可用来制备 2-磷酸庚糖。Maltoheptaose hydrate 是含有七个葡萄糖单元的麦芽低聚糖。

靶点

phosphorylase B

用途 

用于含量测定/鉴定/药理实验等

反应信息

• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 在 甲醇 、 sodium methylate 作用下， 生成 纤维七糖
  参考文献：
  名称：

  The Polymer-homologous Series of Oligosaccharides from Cellulose¹

  摘要：

  DOI：

  10.1021/ja01141a032

文献信息

• Enzymatic synthesis of cellulose II-like substance via cellulolytic enzyme-mediated transglycosylation in an aqueous medium
  作者：Takeshi Hattori、Makoto Ogata、Yumiko Kameshima、Kazuhide Totani、Mitsuru Nikaido、Takashi Nakamura、Hiroyuki Koshino、Taichi Usui

  DOI：10.1016/j.carres.2012.03.018

  日期：2012.5

  The enzymatic synthesis of cellulose-like substance via a non-biosynthetic pathway has been achieved by transglycosylation in an aqueous system of the corresponding substrate, cellotriose for cellulolytic enzyme endo-acting endoglucanase I (EG I) from Hypocrea jecorina. A significant amount of water-insoluble product precipitated out from the reaction system. MALDI-TOF mass analysis showed that the resulting precipitate had a degree of polymerization (DP) of up to 16 from cellotriose. Solid-state C-13 NMR spectrum of the resulting water-insoluble product revealed that all carbon resonance lines were assigned to two kinds of anhydroglucose residues in the corresponding structure of cellulose II. X-ray diffraction (XRD) measurement as well as C-13 NMR analysis showed that the crystal structure corresponds to cellulose II with a high degree of crystallinity. We propose the multiple oligomers form highly crystalline cellulose II as a result of self-assembly via oligomer-oligomer interaction when they precipitate. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.