methyl 2,3,4-tri-O-benzyl-6-O-methyl-α-D-mannopyranoside | 27552-07-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2,3,4-tri-O-benzyl-6-O-methyl-α-D-mannopyranoside
• 英文别名: methyl 6-O-methyl-α-D-mannopyranoside；Methyl-6-O-methyl-α-D-mannopyranosid；(2S,3S,4S,5S,6R)-2-methoxy-6-(methoxymethyl)oxane-3,4,5-triol
• CAS: 27552-07-4
• 化学式: C₈H₁₆O₆
• 分子量: 208.211
• InChiKey: FJFRHMFVCLTWOW-HEIBUPTGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.1
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  88.4
• 氢给体数：
  3
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  methyl 2,3,4-tri-O-benzyl-6-O-methyl-α-D-mannopyranoside 、 乙酸酐 在 硫酸 、 溶剂黄146 作用下， 以3.92 g的产率得到1,2,3,4-tetra-O-acetyl-6-O-methyl-α-D-mannopyranose
  参考文献：
  名称：

  Synthesis of Monomethyl Derivatives ofP-Nitrophenyl α-D-Gluco, Galacto, and Mannopyranosides and their Hydrolytic Properties Against α-Glycosidases

  摘要：

  All possible monomethyl derivatives of p-nitrophenyl alpha-D-gluco, galacto, and mannopyranosides were synthesized. Hydrolytic activities of alpha-glucosidase (rice), alpha-galactosidases (green coffee bean, Mortierella vinacea, and Aspergillus niger), and alpha-mannosidases (almond and jack bean) against them were elucidated. The 6-O-methyl galactopyranoside and mannopyranoside were hydrolyzed by the M. vinacea alpha-galactosidase and the almond and jack bean alpha-mannosidases, respectively, while these enzymes did not act on the 2-, 3-, and 4-O-methyl derivatives. On the other hand, lice alpha-glucosidase and green coffee bean and A. niger alpha-galactosidases had no hydrolyzing activities at all against the respective four monomethylated substrates.

  DOI：

  10.1080/07328300008544084
• 作为产物：
  描述：

  甲基-D-丙噻 在 palladium on activated charcoal 咪唑 、 氢气 、 四丁基碘化铵 、 sodium hydride 、 氟化氢吡啶 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 25.0~80.0 ℃ 、101.33 kPa 条件下， 反应 39.0h， 生成 methyl 2,3,4-tri-O-benzyl-6-O-methyl-α-D-mannopyranoside
  参考文献：
  名称：

  使用甲基化的单糖分析寡糖甘露糖苷结合蛋白的结合特异性。

  摘要：

  使用特异的O-烷基化单糖和双糖检查了来自Canavalia ensiformis和Dioclea grandiflora的紧密相关凝集素的结合特异性。两种凝集素在单糖C2羟基上接受任何取代。对于C2-O-乙基配体，C2-烷基化的配体-伴刀豆球蛋白A复合物的结合能增加1kcal mol-1，而相应的复合物与Dioclea凝集素的结合能相同。与较早的报道相反，两种凝集素均接受甲基而不是乙基取代C3羟基。根据刀豆球蛋白A结合位点的现有模型来解释结果。虽然结果与伴刀豆球蛋白A延伸结合位点的模型一致，该模型将所有二糖的非还原末端置于单糖结合位点，

  DOI：

  10.1016/s0968-0896(96)00178-2

文献信息

• Methylation of methyl α-d-hexopyranosides with diazo-methane in the presence of a small amount of water
  作者：Yuko Inoue、Kinzo Nagasawa

  DOI：10.1016/0008-6215(87)80024-1

  日期：1987.11

  Abstract The long-time reduction of methyl α- d -gluco-, α- d -manno-, and α- d -galactopyranosides with excess diazomethane-diethyl ether at 25° in the presence of water gave all partially methylated methyl α- d -hexopyranosides which differ in number and position of methyl substitution. The presence of electrolytes, such as potassium or sodium phosphate, in the reaction medium enhanced the degree of methylation

  摘要在水存在下，用过量的重氮甲烷-二乙醚在25°下长时间还原甲基α-d-葡萄糖-，α-d-甘露糖和α-d-吡喃半乳糖苷，所有部分甲基化的甲基α-d -甲基吡喃糖苷的数目和位置不同。反应介质中电解质（例如磷酸钾或磷酸钠）的存在增强了甲基化的程度，从而导致优先形成甲基α-d-己基吡喃糖苷的三-O-甲基衍生物。
• Regioselective methylation of methyl glycopyranosides with diazomethane in the presence of transition-metal chlorides and of boric acid
  作者：Evgeny V. Evtushenko

  DOI：10.1016/s0008-6215(99)00044-0

  日期：1999.3

  Abstract Partial methylation of the methyl pyranosides of a number of pentoses, hexoses, 6-deoxyhexoses, methyl uronates and their methyl ethers with diazomethane in the presence of transition-metal chlorides and boric acid was studied. It was found for methyl glycosides of pentoses and 6-deoxyhexoses that tin(II), antimony(III), and titanium(IV) chlorides as well as boric acid promoted substitution

  摘要研究了在过渡金属氯化物和硼酸存在下，许多戊糖，己糖，6-脱氧己糖，尿酸甲酯及其甲基醚的甲基吡喃糖苷与重氮甲烷的部分甲基化。发现戊糖和6-脱氧己糖的甲基糖苷中锡（II），锑（III）和钛（IV）氯化物以及硼酸主要促进OH-3的取代，但被铈（III）和锌的取代（II）观察到盐主要取代了OH-2。在所有情况下，甲基β-1-鼠李糖吡喃糖苷的甲基化表现出较高的OH-2反应性。在氯化锡（II），锑（III）和铈（III）的存在下，己糖甲基糖苷的甲基化反应主要产生了3-甲基醚。不参与进一步络合的3-甲基醚 积聚高达50-80％的反应混合物（95％至100％的单甲醚馏分）。建议用于许多糖的方便的甲基醚的合成。
• A convenient method for the preparation of all of the partially methylated derivatives of methyl α-d-mannopyranoside and α-d-galactopyranoside
  作者：Tomohiro Mega、Atsushi Nishikawa、Tokuji Ikenaka

  DOI：10.1016/0008-6215(83)88296-2

  日期：1983.2