methyl O-β-D-galactopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-β-D-glucopyranoside | 149342-83-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl O-β-D-galactopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-β-D-glucopyranoside
• 英文别名: methyl β-D-galactopyranosyl-(1->4)-β-D-glucopyranosyl-(1->4)-β-D-glucopyranosyl-(1->4)-β-D-glucopyranoside；Gal(b1-4)Glc(b1-4)Glc(b1-4)b-Glc1Me；(2S,3R,4S,5R,6R)-2-[(2R,3S,4R,5R,6S)-6-[(2R,3S,4R,5R,6S)-6-[(2R,3S,4R,5R,6R)-4,5-dihydroxy-2-(hydroxymethyl)-6-methoxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
• CAS: 149342-83-6
• 化学式: C₂₅H₄₄O₂₁
• 分子量: 680.612
• InChiKey: UFVKGYZPFZQRLF-GSZYPIQBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -8.5
• 重原子数：
  46
• 可旋转键数：
  11
• 环数：
  4.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  337
• 氢给体数：
  13
• 氢受体数：
  21

反应信息

• 作为反应物：
  描述：

  methyl O-β-D-galactopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-β-D-glucopyranoside 以 various solvent(s) 为溶剂， 反应 0.5h， 以48%的产率得到methyl O-β-D-glucopyranosyl-(1->4)-O-β-D-glucopyranosyl-(1->4)-β-D-glucopyranoside
  参考文献：
  名称：

  A facile enzymatic synthesis of cellooligosaccharide derivatives using β-lactosyl fluoride

  摘要：

  A convenient method for the preparation of cellooligosaccharide derivatives has been developed that uses beta-lactosyl fluoride as the glycosyl donor, The reaction consists of the following enzymatic processes; (1) a cellulase-catalyzed regio- and stereo-selective lactosylation of a beta-cellobioside as the glycosyl acceptor, utilizing the transglycosylating ability of an enzyme-substrate complex formed from beta-lactosyl fluoride and cellulase; (2) beta-D-galactosidase-catalyzed regioselective cleavage of the terminal D-galactose unit from the lactosylated product, giving rise to a beta-cellotrioside derivative. A cellotetraoside derivative has successfully been prepared in a stereo- and regio-selective manner by repeating these enzymatic reactions and using the resulting beta-cellotrioside as starting material.

  DOI：

  10.1016/0008-6215(93)84066-f
• 作为产物：
  描述：

  α-lactosyl fluoride 、 甲基 4-O-beta-D-吡喃葡萄糖基-beta-D-吡喃葡萄糖苷 在 phosphate buffer 、 Cel₇B Glu₁₉₇Ala mutant 作用下， 反应 24.0h， 以100%的产率得到methyl O-β-D-galactopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-O-β-D-glucopyranosyl-(1<*>4)-β-D-glucopyranoside
  参考文献：
  名称：

  使用突变纤维素酶高效合成 β(1 → 4)-寡糖和多糖

  摘要：

  本报告描述了多种区域选择性修饰的 β(1→4)-寡糖和多糖的有效化学酶法合成。这种成功的方法基于：(i) 使用“糖合酶”，它是来自 Humicola insolens 的保留纤维素酶内切葡聚糖酶 I (Cel7B) 的 Glu-197-Ala 亲核突变体和 (ii) 修饰受体的合理设计和通过仔细检查野生型酶和突变酶的 X 射线结构给出的信息来确定供体分子。该突变体能够以高产率催化未取代和被各种单糖和二糖受体修饰的 α-糖二糖基氟的区域和立体选择性糖基化，以及通过单步反转机制聚合这些供体。

  DOI：

  10.1021/ja9936520

文献信息

• Cellulase-catalysed, stereoselective synthesis of oligosaccharides
  作者：Shin-Ichiro Shoda、Kei Obata、Olaf Karthaus、Shiro Kobayashi

  DOI：10.1039/c39930001402

  日期：——

  Oligosaccharides are synthesised enzymatically using β-lactosyl fluoride as glycosyl donor and a variety of mono-, di-and tri-saccharides as acceptors; the nature of the active site of the catalyst cellulase is discussed on the basis of these reactions.

  低聚糖通过酶法合成，以β-乳糖基氟化物为糖基供体，多种单糖、二糖和三糖作为受体；根据这些反应，探讨了催化剂纤维素酶活性中心的性质。
• Karthaus, Olaf; Shoda, Shin-ichiro; Takano, Hiroshi, Journal of the Chemical Society. Perkin transactions I, 1994, # 13, p. 1851 - 1858
  作者：Karthaus, Olaf、Shoda, Shin-ichiro、Takano, Hiroshi、Obata, Kei、Kobayashi, Shiro

  DOI：——

  日期：——
• Highly Efficient Synthesis of β(1 → 4)-Oligo- and -Polysaccharides Using a Mutant Cellulase
  作者：Sébastien Fort、Viviane Boyer、Lionel Greffe、Gideon J. Davies、Olga Moroz、Lars Christiansen、Martin Schülein、Sylvain Cottaz、Hugues Driguez

  DOI：10.1021/ja9936520

  日期：2000.6.1

  This report describes an efficient chemoenzymatic synthesis of a variety of regioselectively modified β(1→4)-oligo- and -polysaccharides. This successful approach was based on: (i) the use of a “glycosynthase” which is a Glu-197-Ala nucleophile mutant of the retaining cellulase endoglucanase I (Cel7B) from Humicola insolens and (ii) the rational design of modified acceptor and donor molecules through

  本报告描述了多种区域选择性修饰的 β(1→4)-寡糖和多糖的有效化学酶法合成。这种成功的方法基于：(i) 使用“糖合酶”，它是来自 Humicola insolens 的保留纤维素酶内切葡聚糖酶 I (Cel7B) 的 Glu-197-Ala 亲核突变体和 (ii) 修饰受体的合理设计和通过仔细检查野生型酶和突变酶的 X 射线结构给出的信息来确定供体分子。该突变体能够以高产率催化未取代和被各种单糖和二糖受体修饰的 α-糖二糖基氟的区域和立体选择性糖基化，以及通过单步反转机制聚合这些供体。
• A facile enzymatic synthesis of cellooligosaccharide derivatives using β-lactosyl fluoride
  作者：Shin-ichiro Shoda、Tatsuya Kawasaki、Kei Obata、Shiro Kobayashi

  DOI：10.1016/0008-6215(93)84066-f

  日期：1993.10

  A convenient method for the preparation of cellooligosaccharide derivatives has been developed that uses beta-lactosyl fluoride as the glycosyl donor, The reaction consists of the following enzymatic processes; (1) a cellulase-catalyzed regio- and stereo-selective lactosylation of a beta-cellobioside as the glycosyl acceptor, utilizing the transglycosylating ability of an enzyme-substrate complex formed from beta-lactosyl fluoride and cellulase; (2) beta-D-galactosidase-catalyzed regioselective cleavage of the terminal D-galactose unit from the lactosylated product, giving rise to a beta-cellotrioside derivative. A cellotetraoside derivative has successfully been prepared in a stereo- and regio-selective manner by repeating these enzymatic reactions and using the resulting beta-cellotrioside as starting material.