methyl β-D-galactopyranosyl-(1->4)-β-D-xylopyranoside | 97753-81-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl β-D-galactopyranosyl-(1->4)-β-D-xylopyranoside
• 英文别名: methyl β-D-galactopyranosyl-(1→4)-β-D-xylopyranoside；methyl 4-O-(β-D-galactopyranosyl)-β-D-xylopyranoside；methyl 4-O-β-D-galactopyranosyl-β-D-xylopyranoside；methyl 4-O-β-D-galactopyranosyl-D-xylopyranoside；Methyl beta-D-galactopyranosyl-(1-->4)-beta-D-xylopyranoside；(2S,3R,4S,5R,6R)-2-[(3R,4R,5R,6R)-4,5-dihydroxy-6-methoxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol
• CAS: 97753-81-6；104852-09-7；109668-85-1；109668-86-2；110270-59-2；117467-13-7；134731-70-7
• 化学式: C₁₂H₂₂O₁₀
• 分子量: 326.301
• InChiKey: OCQJWGQTUIXAAX-AXUZMKEKSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -3.6
• 重原子数：
  22
• 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：
  158
• 氢给体数：
  6
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  乙酸酐 、 methyl β-D-galactopyranosyl-(1->4)-β-D-xylopyranoside 在 吡啶 作用下， 生成 methyl O-(2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl)-(1->4)-2,3-di-O-acetyl-β-D-xylopyranoside
  参考文献：
  名称：

  Enzymatic syntheses and selective hydrolysis of O-β-d-galactopyranosides using a marine mollusc β-galactosidase

  摘要：

  The use of crude extract of the hepatopancreas of Aplysia fasciata, a large mollusc belonging to the order Anaspidea containing a beta-galactosidase activity, was reported for the synthesis of different galactosides. Good yields with polar acceptors and the uncommon beta-1-3 selectivity in the transgalactosylation reactions with most of the acceptors were observed. A beta-1-2 selectivity in the hydrolytic conditions was also observed and discussed. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2004.10.016
• 作为产物：
  描述：

  methyl 2,3-di-O-benzyl-4-O-trityl-β-D-xylopyranoside 在 palladium on activated charcoal 甲醇 、 三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 、 氢气 、 sodium methylate 、 三氟乙酸 作用下， 以 乙醇 、 二氯甲烷 、 氯仿 、 溶剂黄146 为溶剂， 反应 0.5h， 生成 methyl β-D-galactopyranosyl-(1->4)-β-D-xylopyranoside
  参考文献：
  名称：

  与h型2血型决定簇有关的“支链” 2-连接三糖的合成和结构研究

  摘要：

  一系列岩藻糖基化的三糖l-Fuc-（12）-ß-d-Gal-（14）-ß-X-OMe（1-6，X = d-GlcNAc，d-Qui（6-deoxy-Glc），已经合成了与H 2型血型决定因素有关的d-Xyl），它们分别是α-和ß-L-Fuc异构体以及二糖类起始化合物（7-11）。三糖及其母体二糖的构象性质已通过NMR光谱法（质子和碳化学位移以及质子NOE）结合蒙特卡罗方法和HSEA力场的计算机建模（使用GEGOP程序）进行了研究在α-连接的岩藻糖系列上。

  DOI：

  10.1560/lxum-gkyp-r6rf-08tf

文献信息

• Exploration of the active site of β4GalT7: modifications of the aglycon of aromatic xylosides
  作者：Anna Siegbahn、Karin Thorsheim、Jonas Ståhle、Sophie Manner、Christoffer Hamark、Andrea Persson、Emil Tykesson、Katrin Mani、Gunilla Westergren-Thorsson、Göran Widmalm、Ulf Ellervik

  DOI：10.1039/c4ob02632b

  日期：——

  active site of the enzyme and that quite bulky aglycons are accepted. By separating the aromatic aglycon from the xylose moiety by linkers, a trend towards increased galactosylation with increased linker length is observed. The galactosylation is influenced by the identity and position of substituents in the aromatic framework, and generally, only xylosides with beta-glycosidic linkages function as good

  蛋白聚糖（PGs）是由长的线性多糖，糖胺聚糖（GAG）链组成的大分子，通过碳水化合物木糖共价附于核心蛋白。GAG链的生物合成通过核心蛋白的木糖基化，然后通过半乳糖基转移酶beta4GalT7进行半乳糖基化来启动。一些β-d-木糖苷，例如2-萘基β-d-木吡喃糖苷，可以通过充当beta4GalT7的受体底物来诱导GAG合成，并且还可以与核心蛋白上的GAG合成竞争。在这里，我们使用酶促测定，细胞研究和分子对接模拟，介绍了具有芳香族糖苷配基修饰的beta4GalT7和木糖苷的结构活性关系。结果表明，糖苷配基位于酶的活性位点的外部，并且接受了相当大的糖苷配基。通过通过接头将芳香族糖苷配基与木糖部分分离，观察到半乳糖基化随着接头长度增加而增加的趋势。半乳糖基化受芳香族骨架中取代基的身份和位置的影响，通常，只有具有β-糖苷键的木糖苷才能作为beta4GalT7的良好底物。我们还表明，木糖苷的半乳糖基化
• Studies of the molecular recognition of synthetic methyl β-lactoside analogues by Ricinus communis agglutinin
  作者：Alfonso Rivera-Sagredo、Jesús Jiménez-Barbero、Manuel Martín-Lomas、Dolores Solís、Teresa Díaz-Mauriño

  DOI：10.1016/0008-6215(92)80055-6

  日期：1992.8

  The 2-, 3-, 6-, 2'-, 3'-, 4'-, and 6'-deoxy derivatives and the 3-O-methyl derivative of methyl beta-lactoside have been synthesised and their binding to the galactose-specific agglutinin from Ricinus communis (RCA-120) has been investigated. The results indicate that HO-3,4,6 of the beta-D-galactopyranose moiety are the key polar groups. The main difference from the closely related ricin lectin RCA-60

  已经合成了甲基β-乳糖苷的2-，3-，6-，2'-，3'-，4'-和6'-脱氧衍生物和3-O-甲基衍生物，并且它们与半乳糖结合研究了来自蓖麻的特异性凝集素（RCA-120）。结果表明，β-D-吡喃半乳糖部分的HO-3、4、6是关键的极性基团。与紧密相关的蓖麻毒素凝集素RCA-60的主要区别在于D-吡喃葡萄糖部分的HO-6，这似乎有助于碳水化合物与RCA-60的结合而不与RCA-120的结合。
• Enzymic .beta.-Galactosidation of Modified Monosaccharides: Study of the Enzyme Selectivity for the Acceptor and Its Application to the Synthesis of Disaccharides
  作者：Rosa Lopez、Alfonso Fernandez-Mayoralas

  DOI：10.1021/jo00083a013

  日期：1994.2

  The selectivity of the E. coli beta-galactosidase-catalyzed glycosylation of monosaccharides differently substituted at the anomeric position has been studied. Substituents bearing a phenyl ring increase the enzyme-acceptor binding; however, partial enzyme inhibition occurs. The regioselectivity of the glycosylation was dependent on small variations in the monosaccharide accceptor, such as the atom linked to the anomeric carbon and the number of methylenes between this atom and aromatic ring. A schematic model is proposed that accounts for the results. The information from this study allows the direct synthesis of disaccharides, with high regioselectivity and yields ranging from 30 to 40%.
• Synthesis and structural studies of “branched” 2‐linked trisaccharides related to h‐type 2 blood group determinants
  作者：Jens Ø. Duus、Nikolay E. Nifant'ev、Alexander S. Shashkov、Elena A. Khatuntseva、Klaus Bock

  DOI：10.1560/lxum-gkyp-r6rf-08tf

  日期：2000.12

  A series of fucosylated trisaccharides l-Fuc-(12)-ß-d-Gal-(14)-ß-X-OMe (1-6, X = d-GlcNAc, d-Qui (6-deoxy-Glc), d-Xyl) related to H type 2 blood group determinant have been synthesized both as their α- and ß- L-Fuc anomers together with the component disaccharide starting compounds (7-11). The conformational properties of the trisaccharides together with their parent disaccharides have been investigated

  一系列岩藻糖基化的三糖l-Fuc-（12）-ß-d-Gal-（14）-ß-X-OMe（1-6，X = d-GlcNAc，d-Qui（6-deoxy-Glc），已经合成了与H 2型血型决定因素有关的d-Xyl），它们分别是α-和ß-L-Fuc异构体以及二糖类起始化合物（7-11）。三糖及其母体二糖的构象性质已通过NMR光谱法（质子和碳化学位移以及质子NOE）结合蒙特卡罗方法和HSEA力场的计算机建模（使用GEGOP程序）进行了研究在α-连接的岩藻糖系列上。
• Enzymatic syntheses and selective hydrolysis of O-β-d-galactopyranosides using a marine mollusc β-galactosidase
  作者：Assunta Giordano、Annabella Tramice、Giuseppina Andreotti、Ernesto Mollo、Antonio Trincone

  DOI：10.1016/j.bmcl.2004.10.016

  日期：2005.1

  The use of crude extract of the hepatopancreas of Aplysia fasciata, a large mollusc belonging to the order Anaspidea containing a beta-galactosidase activity, was reported for the synthesis of different galactosides. Good yields with polar acceptors and the uncommon beta-1-3 selectivity in the transgalactosylation reactions with most of the acceptors were observed. A beta-1-2 selectivity in the hydrolytic conditions was also observed and discussed. (C) 2004 Elsevier Ltd. All rights reserved.