methyl 3,4,6-tri-O-methyl-α-D-glucopyranoside | 13479-66-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 3,4,6-tri-O-methyl-α-D-glucopyranoside
• 英文别名: Methyl-3.4.6-tri-O-methyl-α-D-glucosid；Methyl-3,4,6-tri-O-methyl-α-D-glucopyranosid；alpha-d-Glucopyranoside, methyl 3,4,6-tri-O-methyl-；(2S,3R,4R,5R,6R)-2,4,5-trimethoxy-6-(methoxymethyl)oxan-3-ol
• CAS: 13479-66-8
• 化学式: C₁₀H₂₀O₆
• 分子量: 236.265
• InChiKey: MJCQVUQCEVACLB-IGORNWKESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  66.4
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  methyl 3,4,6-tri-O-methyl-α-D-glucopyranoside 在 三氟甲磺酸三甲基硅酯 吡啶 、 三乙基硅烷 作用下， 以 二氯甲烷 为溶剂， 反应 0.5h， 生成 1,5-anhydro-3,4,6-tri-O-methyl-2-O-propionyl-D-glucitol
  参考文献：
  名称：

  Studies of model compounds for the analysis of ester-containing polysaccharides by the reductive-cleavage method

  摘要：

  The four O-propionyl regioisomers of methyl tri-O-methyl-alpha-D-glucopyranoside and the 2- and 3-O-propionyl regioisomers of methyl tri-O-methyl-beta-D-glucopyranoside were subjected to reductive cleavage in the presence of Et3SiH and Me3SiOSO2CF3, BF3.Et2O, or Me3SiOSO2Me-BF3.Et2O. The O-propionyl group was stable when either Me3SiOSO2CF3 or BF3.Et2O Was the catalyst, but was slowly reduced to the (1-propyl) ether when Me3SiOSO2Me-BF3.Et2O was the catalyst. Reductive cleavages catalyzed by Me3SiOSO2CF3 were complete in 6 h, those catalyzed by BF3.Et2O required at least 24 h, and those catalyzed by Me3SiOSO2Me-BF3.Et2O required 30 min or less. In the alpha-series, the rate of reductive cleavage decreased in the order 6-O-propionyl > 4-O-propionyl > 3-O-propionyl much greater than 2-O-propionyl. The reductive cleavage of beta-anomers was faster than that of the corresponding alpha-anomers. This effect was particularly striking for the alpha and beta-anomers of the 2-O-propionyl regioisomer, as would be expected on the basis of a participation reaction.

  DOI：

  10.1016/0008-6215(92)84021-j
• 作为产物：
  描述：

  (1R,2S,4S,5'R,6R,7S,8R,9S,12S,13R,16S,18R)-16-[(2R,3R,4S,5R,6R)-4,5-dimethoxy-6-(methoxymethyl)-3-[(2S,3R,4S,5R,6R)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-5',7,9,13,18-pentamethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosane-6,2'-oxane] 生成 methyl 3,4,6-tri-O-methyl-α-D-glucopyranoside
  参考文献：
  名称：

  NAKANO, KIMIKO;YAMASAKI, TOKUSHI;IMAMURA, YUKIKO;MURAKAMI, KOTARO;TAKAISH+, PHYTOCHEMISTRY, 28,(1989) N, C. 1215-1217

  摘要：

  DOI：

文献信息

• Defining oxyanion reactivities in base-promoted glycosylations
  作者：Martin Matwiejuk、Joachim Thiem

  DOI：10.1039/c1cc11690h

  日期：——

  Saccharide oxyanions obtained by base treatment could be employed in glycosylation to give oligosaccharides with high stereo- and regioselectivities.

  通过碱处理获得的糖类氧阴离子可用于糖基化以产生具有高立体选择性和区域选择性的寡糖。
• 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。
• Study on the constituents of Desmodium styracifolium.
  作者：Tomoko KUBO、Syuichi HAMADA、Toshihiro NOHARA、Zhi-rou WANG、Hideo HIRAYAMA、Keiichi IKEGAMI、Ken YASUKAWA、Michio TAKIDO

  DOI：10.1248/cpb.37.2229

  日期：——

  Two triterpenoid saponins (1 and 2) were isolated from Desmodii Herba [the dried whole plants of Desmodium styracifolium (Osbeck) Merr. (Leguminosae)] and their chemical structures were characterized as soyasaponin I and a new saponin, 3-O-[alpha-L-rhamnopyranosyl-(1----2)-beta-D-galactopyranosyl- (1----2)-beta-D-glucuronopyranosyl]soyasapogenol E, respectively, by chemical and spectroscopic means

  从Desmodii Herba [满地香（Desmodium styracifolium（Osbeck）Merr）干燥的整株植物中分离出了两个三萜皂苷（1和2）。（豆科）]及其化学结构被表征为大豆皂苷I和新的皂苷3-O- [α-L-鼠李糖基-（1 ---- 2）-β-D-吡喃半乳糖基-（1 ---- 2）通过化学和光谱方法分别测定β-D-D-葡萄糖醛酸吡喃糖基]大豆皂酚E。
• New Method for Regioselective Glycosylation Employing Saccharide Oxyanions
  作者：Martin Matwiejuk、Joachim Thiem

  DOI：10.1002/ejoc.201100861

  日期：2011.10

  As an alternative concept for glycosylation, the prior activation of acceptor hydroxy groups for selective glycosidic bond formation, was investigated to give complex oligosaccharides. Oxyanions obtained from partially protected saccharides were glycosylated by employing glycopyranosyl halides, and the regiochemical results were studied. Initially, partially methylated methyl-α-D-glucopyranosides were

  作为糖基化的替代概念，研究了先激活受体羟基以形成选择性糖苷键，以得到复杂的寡糖。从部分保护的糖类中获得的氧阴离子通过使用吡喃糖基卤化物进行糖基化，并研究了区域化学结果。最初，部分甲基化的甲基-α-D-吡喃葡萄糖苷被用作模型系统来研究碱基促进糖基化的基本机制原理。实现了高区域选择性和立体特异性糖苷键的形成，并且该方法的范围通过不同的全苄化糖基供体进行了扩展。
• Steroidal glycosides of Tribulus terrestris Linn
  作者：Shashi B. Mahato、Niranjan P. Sahu、Amar N. Ganguly、Kazumoto Miyahara、Toshio Kawasaki

  DOI：10.1039/p19810002405

  日期：——

  Besides β-sitosterol-β-D-glucoside and dioscin, two new steroidal glycosides, neohecogenin glucoside and tribulosin, isolated from the aerial part of Tribulus terrestris Linn. were respectively shown to be neohecogenin-3-O-β-D-glucopyranoside (2) and neotigogenin-3-O-β-D-xylopyranosyl(1→2)-[β-D-xylopyranosyl(1→3)]-β-D-glucopyranosyl(1→4)-[α-L-rhamnopyranosyl(1→2)]-β-D-galactopyranoside (7).

  除了β谷甾醇-β- d葡糖苷和薯蓣皂甙，两个新的甾体糖苷，neohecogenin葡糖苷和tribulosin，从地上部分分离蒺藜属。分别示出为neohecogenin -3- ö -β- d吡喃葡萄糖苷（2）和neotigogenin -3- ö -β- d -xylopyranosyl（1→2） - [β- d -xylopyranosyl（1→3）] - β- D-吡喃葡萄糖基（1→4）-[α- L-鼠李糖吡喃糖基（1→2）]-β- D-吡喃半乳糖苷（7）。