(2R,3r,4r,5r)-2-甲氧基四氢-2H-吡喃-3,4,5-三醇 | 91-09-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: (2R,3r,4r,5r)-2-甲氧基四氢-2H-吡喃-3,4,5-三醇
• 英文名称: methyl β-D-ribopyranoside
• 英文别名: 1-methyl β-D-ribopyranoside；1-methyl-β-D-ribopyranoside；β-methyl D-ribopyranoside；β-methyl-D-ribopyranoside；methyl-β-D-ribopyranoside；Methyl-β-D-ribopyranosid；(2R,3R,4R,5R)-2-Methoxytetrahydro-2H-pyran-3,4,5-triol；(2R,3R,4R,5R)-2-methoxyoxane-3,4,5-triol
• CAS: 91-09-8；612-05-5；1825-00-9；2500-78-9；3867-83-2；3945-28-6；5328-63-2；6206-67-3；6207-01-8；6207-03-0；7404-24-2；14703-09-4；17289-61-1；18449-76-8；33509-64-7；36793-06-3；41897-31-8；41897-32-9；41897-33-0；41897-34-1；41897-37-4；41897-38-5；41897-39-6；53448-52-5；65137-86-2；89615-04-3；89615-05-4；131233-91-5
• 化学式: C₆H₁₂O₅
• 分子量: 164.158
• InChiKey: ZBDGHWFPLXXWRD-KVTDHHQDSA-N

物化性质

• 熔点：
  83 °C
• 沸点：
  314.0±42.0 °C(Predicted)
• 密度：
  1.40±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -2
• 重原子数：
  11
• 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：

  (2R,3r,4r,5r)-2-甲氧基四氢-2H-吡喃-3,4,5-三醇 在 盐酸 、 sodium hydroxide 、 偶氮二异丁腈 、 三正丁基氢锡 、 溶剂黄146 作用下， 以 1,4-二氧六环 、 苯 为溶剂， 反应 22.58h， 生成 methyl 2-deoxy-β-D-erythro-pentopyranoside
  参考文献：
  名称：

  A convenient method for the preparation of methyl 2-deoxy-β-d-erythro-pentopyranoside

  摘要：

  DOI：

  10.1016/0008-6215(85)85033-3
• 作为产物：
  描述：

  甲基-β-D-吡喃木糖苷 在 甲醇 、 sodium 、 三苯基膦 、 苯甲酸 、 偶氮二甲酸二乙酯 作用下， 生成 (2R,3r,4r,5r)-2-甲氧基四氢-2H-吡喃-3,4,5-三醇
  参考文献：
  名称：

  The Mitsunobu reaction on methyl glycosides as alcohol component

  摘要：

  DOI：

  10.1016/0008-6215(87)80148-9

文献信息

• 13C CP MAS NMR and crystal structure of methyl glycopyranosides
  作者：Katarzyna Paradowska、Tomasz Gubica、Andrzej Temeriusz、Michał K. Cyrański、Iwona Wawer

  DOI：10.1016/j.carres.2008.05.015

  日期：2008.9

  The X-ray diffraction analysis, (13)C CP MAS NMR spectra and powder X-ray diffraction patterns were obtained for selected methyl glycosides: alpha- and beta-d-lyxopyranosides (1, 2), alpha- and beta-l-arabinopyranosides (3, 4), alpha- and beta-d-xylopyranosides (5, 6) and beta-d-ribopyranoside (7) and the results were confirmed by GIAO DFT calculations of shielding constants. In X-ray diffraction analysis

  对于选定的甲基糖苷，获得了X射线衍射分析，（13）CP CP MAS NMR光谱和粉末X射线衍射图：α-和β-d-lyxopyranosides（1、2），α-和β-1-阿拉伯吡喃糖苷（3、4），α-和β-d-吡喃吡喃糖苷（5、6）和β-d-核吡喃吡喃糖苷（7），其结果通过GIAO DFT计算屏蔽常数得到了证实。在1和2的X射线衍射分析中，由于异头效应，在1的分子中观察到所选键的特征缩短和延长，并且在1和2的晶格中观察到不同图案的氢键。另外，在1中观察到了另外一个具有环氧原子参与的分子内氢键。固态和溶液之间观察到的化学位移差异来自构象效应和各种分子间氢键的形成。源于分子间氢键的化学位移变化的幅度小于构象效应。此外，对4、5和7进行的粉末X射线衍射（PXRD）显示，7以两种多晶型物的混合物形式存在，其中之一可能由两个非等价分子组成。
• A SYNTHESIS OF 5,6-DIDEOXY-<scp>D</scp>-XYLOHEXOSE(5-DEOXY-5-<i>C</i>-METHYL-<scp>D</scp>-XYLOSE)
  作者：J. K. N. Jones、J. L. Thompson

  DOI：10.1139/v57-130

  日期：1957.9.1

  A synthesis of 5,6-dideoxy-D-xylohexose (I) from D-glucose is described. The action of sodium iodide in acetone on some toluene-p-sulphonyl esters of sugar derivatives is detailed.

  描述了从 D-葡萄糖合成 5,6-二脱氧-D-木己糖 (I)。详细介绍了丙酮中的碘化钠对某些糖衍生物的甲苯-对磺酰基酯的作用。
• 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。
• Regioselective mono-oxidation of non-protected glycosides by the bis-tributyltin oxide-bromine method.
  作者：Yoshisuke Tsuda、Naohisa Matsuhira、Kimihiro (Yoshimoto) Kanemitsu

  DOI：10.1248/cpb.33.4095

  日期：——

  Treatment of methyl glycosides with an excess of bis-tributyltin oxide and molecular sieves 3A in chloroform followed by brominolysis resulted in monooxidation to yield oxo-glycosides regioselectively. Thus Me β-D-Glc and Me β-D-Xyl gave the 3-oxo derivatives in more than 90% yield, and Me α-D-Glc, Me α-D-Gal, Me α-D-Xyl, and Me β-L-Ara gave the 4-oxo derivatives in 70-80% yield.

  甲基糖苷与过量的二三丁基锡氧化物和分子筛3A在氯仿中反应，随后进行溴解反应，可以区域选择性地单氧化生成氧代糖苷。因此，Me β-D-葡糖苷和Me β-D-木糖苷以超过90%的产率得到3-氧代衍生物，而Me α-D-葡糖苷、Me α-D-半乳糖苷、Me α-D-木糖苷和Me β-L-阿拉伯糖苷以70-80%的产率得到4-氧代衍生物。
• GLYCOSIDATION OF SUGARS: II. METHANOLYSIS OF D-XYLOSE, D-ARABINOSE, D-LYXOSE, AND D-RIBOSE
  作者：C. T. Bishop、F. P. Cooper

  DOI：10.1139/v63-405

  日期：1963.11.1

  Rates of methanolysis reactions of D-xylose, D-arabinose, D-lyxose, and D-ribose have been determined. It was found that methanolysis of a pentose proceeds to equilibrium through four distinguishable, competing reactions: (1) pentose → furanosides; (2) anomerization of furanosides; (3) furanosides → pyranosides; (4) anomerization of pyranosides. The glycoside compositions at equilibrium are interpreted in terms of stabilities of each of the four glycosides from each sugar as influenced by steric and ionic effects; a system of conformational analysis of furanoside rings is presented. The free energies of reaction in anomerization of pyranosides were in excellent agreement with values calculated from previously reported interaction energies in the pyranoid ring. The relative rates of the reactions were consistent with the view that non-bonded interactions in the methyl glycosides are relieved in the transition states for their interconversions.

  甲醇解反应的速率确定了D-木糖、D-阿拉伯糖、D-来苏糖和D-核糖的速率。发现戊糖的甲醇解反应通过四个可区分的、竞争性反应达到平衡：(1)戊糖→呋喃糖苷；(2)呋喃糖苷的异构化；(3)呋喃糖苷→吡喃糖苷；(4)吡喃糖苷的异构化。平衡时的糖苷组成是根据每种糖的四种糖苷的稳定性来解释的，这种稳定性受到立体和离子效应的影响；提出了呋喃糖苷环的构象分析方法。吡喃糖苷异构化反应的自由能变化与先前报道的吡喃环相互作用能计算出的值非常一致。这些反应的相对速率与这种观点相符，即在甲基糖苷的过渡态中，非键合相互作用得到了缓解。