methyl 2-O-methanesulfonyl-α-D-glucopyranoside | 55881-04-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2-O-methanesulfonyl-α-D-glucopyranoside
• 英文别名: methyl 2-O-mesyl-α-D-glucopyranoside；methyl-(O²-methanesulfonyl-α-D-glucopyranoside)；Methyl-(O²-methansulfonyl-α-D-glucopyranosid)；Methyl-2-O-methansulfonyl-α-D-gluco-pyranosid；[(2S,3R,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-2-methoxyoxan-3-yl] methanesulfonate
• CAS: 55881-04-4
• 化学式: C₈H₁₆O₈S
• 分子量: 272.276
• InChiKey: XTYLWCITAZJMDN-CBQIKETKSA-N

物化性质

• 沸点：
  531.2±50.0 °C(Predicted)
• 密度：
  1.54±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1.9
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  131
• 氢给体数：
  3
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  methyl 2-O-methanesulfonyl-α-D-glucopyranoside 在 盐酸 、 水 作用下， 生成 2-O-mesyl-D-glucopyranose
  参考文献：
  名称：

  相邻基团的参与对2-O-取代的甲基葡糖苷的水解的影响

  摘要：

  当参与小组固有地撤防时，邻近小组的参与是否真的增强了异头中心的反应性？为了研究2-O保护基的邻近基团效应对酸性糖苷水解的影响，已合成了在O2上具有不同保护基的10个甲基葡糖苷，并且端基异构构型，保护基的参与和速率之间存在明显的趋势。可以观察到水解的增加。

  DOI：

  10.1021/ol202308y
• 作为产物：
  描述：

  methyl 4,6-O-benzylidene-3-O-benzyl-α-D-glucopyranoside 在 吡啶 、 palladium 10% on activated carbon 、 氢气 作用下， 以 甲醇 、 乙酸乙酯 为溶剂， 反应 18.0h， 生成 methyl 2-O-methanesulfonyl-α-D-glucopyranoside
  参考文献：
  名称：

  相邻基团的参与对2-O-取代的甲基葡糖苷的水解的影响

  摘要：

  当参与小组固有地撤防时，邻近小组的参与是否真的增强了异头中心的反应性？为了研究2-O保护基的邻近基团效应对酸性糖苷水解的影响，已合成了在O2上具有不同保护基的10个甲基葡糖苷，并且端基异构构型，保护基的参与和速率之间存在明显的趋势。可以观察到水解的增加。

  DOI：

  10.1021/ol202308y

文献信息

• Utilization of Sugars in Organic Synthesis. XXIV. Regioselective Monotosylation of Non-protected and Partially Protected Glycosides by the Dibutyltin Oxide Method.
  作者：Yoshisuke TSUDA、Makoto NISHIMURA、Takuya KOBAYASHI、Yoshiyuki SATO、Kimihiro KANEMITSU

  DOI：10.1248/cpb.39.2883

  日期：——

  Tosylation of non-protected glycopyranosides with p-toluenesulfonyl chloride in the presence of 4-dimethyl-aminopyridine, after activiation of the glycosides by dibutyltin oxide, gave mono-O-tosylates in good yield. The regioselectivity in this tosylation was different from that in the corresponding benzoylation for some glycosides. The reason for this difference is discussed based on an equilibrium of the tin intermediates and kinetic attack of the tosyl chloride on the intermediates. Thus, by application of this tosylation method to non-protected and partially protected glycosides, various glycoside mono-O-tosylates were synthesized regioselectively.

  在二丁基锡氧化物活化糖苷后，使用对甲苯磺酰氯和4-二甲氨基吡啶的存在下，对非保护性糖苷进行甲苯磺酰化反应，可得到产量良好的单-O-甲苯磺酸酯。某些糖苷在这种甲苯磺酰化反应中的区域选择性与相应的苯甲酰化反应不同。这种差异的原因基于锡中间体的平衡和甲苯磺酰氯对中间体的动力学攻击。因此，通过将这种方法应用于非保护性和部分保护性糖苷，可以区域选择性地合成各种糖苷单-O-甲苯磺酸酯。
• Utilization of Sugars in Organic Synthesis. XXIII. Part XXII: Lithium Aluminum Hydride Reduction of Glycopyranoside-Monosulfonates: Formation of Branched Furanosides.
  作者：Yoshisuke TSUDA、Makoto NISHIMURA、Yoko ITO

  DOI：10.1248/cpb.39.1983

  日期：——

  Lithium aluminum hydride reduction of glycopyranoside-monotosylates caused three reactions : (1) stereospecific 1, 2-shift, producing branched furanosides (path A), (2) reductive O-S bond cleavage, producing the original glycosides (path B), and (3) reductive removal of the tosyloxy group, producing deoxyglycosides (path C). The path A reaction was particularly evident for the monotosylates at 2-O, 3-O, and 4-O : for example, methyl 2-O-tosyl-α-D-xylopyranoside gave methyl 2-deoxy-2-C-(hydroxymethyl)-α-D-erythrofuranoside in 60% yield. This reaction opens a new and efficient route to branched glycofuranosides of natural and unnatural type. Stereo-electronic requirements of this reaction in relation to the balance of the other two reactions are discussed.

  乙醇醛糖苷-单甲磺酸酯的锂铝氢还原引发了三种反应：(1) 立体特异性的1,2-移位，生成分支呋喃糖苷(路径A)，(2) 还原性O-S键断裂，生成原始糖苷(路径B)，以及(3) 甲磺酰氧基的还原性移除，生成去氧糖苷(路径C)。在2-O、3-O和4-O位置的单甲磺酸酯中，路径A反应尤为显著；例如，甲基2-O-甲磺酰-α-D-木糖吡喃糖苷以60%的产率转化为甲基2-脱氧-2-C-(羟甲基)-α-D-赤藓呋喃糖苷。该反应为天然与非天然型分支糖呋喃糖苷的合成开辟了一条新颖高效的途径。本反应的立体电子学需求与其余两种反应的平衡关系在此讨论。
• Chemo- and Regioselective Monosulfonylation of Nonprotected Carbohydrates Catalyzed by Organotin Dichloride under Mild Conditions
  作者：Wataru Muramatsu

  DOI：10.1021/jo301353k

  日期：2012.9.21

  The catalytic regioselective monosulfonylation of nonprotected carbohydrates using organotin dichloride under mild conditions is examined. The carbohydrates were chemo- and regioselectively converted to the corresponding monosulfonates in the presence of monoalcohols using catalytic dibutyltin dichloride. The regioselectivity of the sulfonylation is attributed to the intrinsic character of the carbohydrates derived from the relative stereochemistry between their hydroxy groups.
• The Solvolysis of Sulfonyl Esters of Methyl α-D-Glucopyranoside and Methyl α-D-Altropyranoside¹
  作者：Roger W. Jeanloz、Dorothy A. Jeanloz

  DOI：10.1021/ja01554a029

  日期：1958.11
• The Influence of Neighboring Group Participation on the Hydrolysis of 2-O-Substituted Methyl Glucopyranosides
  作者：Mads Heuckendorff、Christian M. Pedersen、Mikael Bols

  DOI：10.1021/ol202308y

  日期：2011.11.18

  group participation actually enhance the reactivity of the anomeric center when the participating group is inherently disarming? To investigate the influence of the neighboring group effect from a 2-O protective group on acidic glycoside hydrolysis, 10 methyl glucosides having different protective groups on O2 have been synthesized and a clear trend between anomeric configuration, participation of the

  当参与小组固有地撤防时，邻近小组的参与是否真的增强了异头中心的反应性？为了研究2-O保护基的邻近基团效应对酸性糖苷水解的影响，已合成了在O2上具有不同保护基的10个甲基葡糖苷，并且端基异构构型，保护基的参与和速率之间存在明显的趋势。可以观察到水解的增加。