(2S,3R,4R,5R,6S)-2-Methoxy-6-methyl-tetrahydro-pyran-3,4,5-triol | 42214-00-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2S,3R,4R,5R,6S)-2-Methoxy-6-methyl-tetrahydro-pyran-3,4,5-triol
• 英文别名: methyl α-L-rhamnopyranoside；methyl β-L-rhamnopyranoside；α-methyl rhamnoside；methyl beta-l-rhamnoside；methyl-β-L-rhamnopyranoside；Methyl-β-L-rhamnopyranosid；Methyl beta-rhamnopyranoside；(2S,3R,4R,5R,6S)-2-methoxy-6-methyloxane-3,4,5-triol
• CAS: 42214-00-6
• 化学式: C₇H₁₄O₅
• 分子量: 178.185
• InChiKey: OHWCAVRRXKJCRB-TYDWOXHJSA-N

物化性质

• 熔点：
  139 °C
• 沸点：
  312.6±42.0 °C(Predicted)
• 密度：
  1.32±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1.6
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  79.2
• 氢给体数：
  3
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  (2S,3R,4R,5R,6S)-2-Methoxy-6-methyl-tetrahydro-pyran-3,4,5-triol 在 吡啶 、 ammonium cerium(IV) nitrate 、 二正丁基氧化锡 作用下， 以 甲醇 、 水 、 乙腈 为溶剂， 生成 methyl 2,4-di-O-acetyl-α-L-rhamnopyranoside
  参考文献：
  名称：

  2,4-Diazido-2,4,6-trideoxy-l-hexopyranoses as valuable building units in the synthesis of natural products

  摘要：

  Synthesis of five L-enantiomers of 2,4-diazido-2,4,6-trideoxy-pyranoses has been accomplished. These sugars were prepared via the regioselective protection of hydroxyl groups in L-rhamnoside and L-fucoside, followed by triflation and subsequent S(N)2 substitution with azido nucleophiles. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2003.11.018
• 作为产物：
  描述：

  methyl 2,3,4-tri-O-acetyl-β-L-rhamnopyranoside 在 甲醇 、 氨 作用下， 生成 (2S,3R,4R,5R,6S)-2-Methoxy-6-methyl-tetrahydro-pyran-3,4,5-triol
  参考文献：
  名称：

  Fischer et al., Chemische Berichte, 1920, vol. 53, p. 2362,2376, 2382

  摘要：

  DOI：

文献信息

• Regioselective Protection of Sugars Catalyzed by Dimethyltin Dichloride
  作者：Yosuke Demizu、Yuki Kubo、Hiroko Miyoshi、Toshihide Maki、Yoshihiro Matsumura、Noriaki Moriyama、Osamu Onomura

  DOI：10.1021/ol802095e

  日期：2008.11.6

  The first catalytic process for protection of hydroxyl groups in sugars has been developed. Highly regioselective protection was accomplished along with high chemical yield. The regioselectivity of the benzoylation was realized as an intrinsic character of sugars based on a stereorelationship among their hydroxyl groups. Furthermore, complete protection of alpha-methyl glucoside and beta-methyl xyloside

  已经开发出用于保护糖中羟基的第一催化方法。高度的区域选择性保护以及高化学产率得以实现。基于糖的羟基之间的立体关系，实现了苯甲酰化的区域选择性是糖的固有特征。此外，完成了对α-甲基葡糖苷和β-甲基木糖苷的完全保护。
• Characterization of methyl glycosides at the pico- to nano-gram level
  作者：Jerzy Golik、Hung-Wen Liu、Michael Dinovi、Jun Furukawa、Koji Nakanishi

  DOI：10.1016/0008-6215(83)88042-2

  日期：1983.7

  Abstract We describe a general method that permits characterization of 100-pg to 1-ng quantities of sugars. Thus, oligosaccharides are subjected to methanolysis, followed by per- p -bromobenzoylation or pernaphthoylation, and the methyl glycoside peresters are separated by high-pressure liquid chromatography. The method is also applicable to amino and acetamido sugars. If required, the separated sugar

  摘要我们描述了一种通用的方法，该方法可以表征100 pg至1 ng量的糖。因此，将寡糖进行甲醇分解，然后进行对-溴苯甲酰化或萘甲酰化，并通过高压液相色谱法分离甲基糖苷过酸酯。该方法也适用于氨基糖和乙酰氨基糖。如果需要，可以通过溴苯甲酸酯的特征准M +峰和激子分裂的圆二色性（cd）曲线的极值明确标识分离的糖衍生物。此外，由于聚苯甲酸酯的cd极值可从组分二苯甲酸酯单元的极值中预测出来，因此cd数据可得出有关吡喃葡萄糖的-OH，-NH 2和-NHAc基团未知空间分布的信息。该方法的应用已通过绿色戊糖C进行了证明，
• Regioselective Monoacetylation of Methyl Pyranosides of Pentoses and 6‐Deoxyhexoses by Acetic Anhydride in the Presence of MoCl₅
  作者：Evgeny V. Evtushenko

  DOI：10.1080/00397910600591565

  日期：2006.6.1

  Abstract Convenient regioselective syntheses of 3‐acetates of methyl pyranosides of α‐L‐rhamnose, α‐ and β‐L‐arabinose, α‐D‐fucose, α‐D‐lyxose, and β‐D‐ribose with good yields have been attained using MoCl5 as catalyst. Methyl β‐L‐rhamnopyranoside under this conditions gave 2‐acetate.

  摘要 α-L-鼠李糖、α-和β-L-阿拉伯糖、α-D-岩藻糖、α-D-来苏糖和β-D-核糖的甲基吡喃糖苷的3-乙酸酯的方便区域选择性合成已获得良好的产率。以 MoCl5 为催化剂。在此条件下甲基β-L-吡喃鼠李糖苷生成2-乙酸酯。
• Synthetic studies toward the anthrax tetrasaccharide: alternative synthesis of this antigen
  作者：Ophélie Milhomme、Sandrine G.Y. Dhénin、Florence Djedaïni-Pilard、Vincent Moreau、Cyrille Grandjean

  DOI：10.1016/j.carres.2012.01.007

  日期：2012.7

  conjugation, has been envisaged by both [2+2] and [1+3] approaches from D-fucose and L-rhamnose. The successful route reported herein relies on a [1+3] strategy in which the 1,2-trans-glycosidic linkages have been secured using a participating group at the 2-position of the donors using conventional thio as well as trichloroacetimidate glycosylation chemistry. The exchange of the ester to benzyl protective

  D-岩藻糖和L-鼠李糖的[2 + 2]和[1 + 3]方法都可以合成适于结合的炭疽四糖。本文报道的成功途径依赖于[1 + 3]策略，其中1,2-反式-糖苷键已通过使用常规硫代以及三氯乙酰亚氨酸酯糖基化化学方法在供体的2位使用参与基团得到固定。酯与鼠李糖基部分上的苄基保护基的交换是实现四糖最终组装和功能化的关键。
• 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。