methyl 4-O-benzoyl-β-D-xylopyranoside | 83158-29-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 4-O-benzoyl-β-D-xylopyranoside
• 英文别名: [(3R,4R,5R,6R)-4,5-dihydroxy-6-methoxyoxan-3-yl] benzoate
• CAS: 83158-29-6
• 化学式: C₁₃H₁₆O₆
• 分子量: 268.266
• InChiKey: RULHOIWFKFCGQO-LSCVPOLPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.2
• 重原子数：
  19
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  85.2
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  N,O-双三甲硅基乙酰胺 、 methyl 4-O-benzoyl-β-D-xylopyranoside 以 吡啶 为溶剂， 反应 0.25h， 生成 Benzoic acid (3R,4S,5R,6R)-6-methoxy-4,5-bis-trimethylsilanyloxy-tetrahydro-pyran-3-yl ester
  参考文献：
  名称：

  Schraml, Jan; Petrakova, Eva; Pihar, Otomar, Collection of Czechoslovak Chemical Communications, 1983, vol. 48, # 7, p. 1829 - 1841

  摘要：

  DOI：
• 作为产物：
  描述：

  methyl 2,3-di-O-acetyl-β-D-xylopyranoside 在 盐酸 、 甲醇 作用下， 以 吡啶 为溶剂， 反应 7.0h， 生成 methyl 4-O-benzoyl-β-D-xylopyranoside
  参考文献：
  名称：

  Petrakova, Eva; Schraml, Jan, Collection of Czechoslovak Chemical Communications, 1983, vol. 48, # 3, p. 877 - 888

  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。
• Regioselective benzoylation of glycopyranosides by benzoic anhydride in the presence of Cu(CF3COO)2
  作者：Evgeny V. Evtushenko

  DOI：10.1016/j.carres.2012.06.020

  日期：2012.10

  Benzoylation of methyl and benzyl glycopyranosides by benzoic anhydride in acetonitrile in the presence of copper(II) trifluoroacetate as a promoter has given monobenzoates with a good yield and high regioselectivity. The composition of monobenzoates depended both on a configuration of hydroxyl groups and on a configuration of aglycone. The simple syntheses of the monobenzoates of some glycosides are

  在三氟乙酸铜（II）作为促进剂的存在下，在乙腈中通过苯甲酸酐在苯甲腈中对甲基和苄基吡喃葡萄糖苷进行苯甲酰化，得到了单苯甲酸酯，具有良好的收率和较高的区域选择性。单苯甲酸酯的组成取决于羟基的构型和糖苷配基的构型。提供了一些糖苷的单苯甲酸酯的简单合成。
• Acyl Group Migration in Pyranosides as Studied by Experimental and Computational Methods
  作者：Robert Lassfolk、Manuel Pedrón、Tomás Tejero、Pedro Merino、Johan Wärnå、Reko Leino

  DOI：10.1002/chem.202200499

  日期：2022.6.15

  have studied the acyl migration in different monosaccharides using five different acyl groups by a combination of experimental, kinetic and theoretical tools. The results show that the anomeric configuration in the monosaccharide has a major influence on the migration rate, together with the relative configurations of the other hydroxyl groups and the nature of the migrating acyl group. Full mechanistic

  酰基迁移影响所有含有游离羟基的酰化有机化合物，特别是碳水化合物的合成、分离、操作和纯化。虽然已经报道了一些关于不同缓冲液中迁移现象的孤立研究，但缺乏对类似条件下不同单糖整体迁移过程的全面了解。在这里，我们结合实验、动力学和理论工具，使用五种不同的酰基研究了不同单糖中的酰基迁移。结果表明，单糖中的异头构型与其他羟基的相对构型和迁移酰基的性质一起对迁移速率有重大影响。全机械模型，基于计算，
• Tsuda, Yoshisuke; Haque, Md. Ekramul; Yoshimoto, Kimihiro, Chemical and pharmaceutical bulletin, 1983, vol. 31, # 5, p. 1612 - 1624
  作者：Tsuda, Yoshisuke、Haque, Md. Ekramul、Yoshimoto, Kimihiro

  DOI：——

  日期：——
• Regioselective protection strategies for D-xylopyranosides
  作者：Richard F. Helm、John Ralph、Laurens Anderson

  DOI：10.1021/jo00025a013

  日期：1991.12

  The acylation of D-xylopyranosides can be effected at any position by selective hydroxyl activation with dibutyltin oxide in refluxing benzene and proper choice of starting anomer. Methyl 4-O-benzyl-beta-D-xylopyranoside, available from methyl 2,3-O-isopropylidene-beta-D-xylopyranoside, provides the 2- and 3-benzoates, which are easily separable in 85% combined yield. Methyl and allyl beta-D-xylopyranosides, when treated with 1 equiv of dibutyltin and subsequently with benzoyl chloride (1 equiv), yield their corresponding 4-benzoates (80%). The use of 2 equiv of benzoyl chloride provides the 3,4-dibenzoates in excellent yield (90%). The clean conversion to mono- or dibenzoates, depending on the amount of benzoyl chloride added, suggests that the intermediate stannylene acetals provide different activation levels. A pathway involving acylation of an intermediate dibutylchlorostannyl ether is proposed to explain the observed phenomenon. This sequential selective activation is used to afford protection and differentiation of the 3- and 4-positions with a one-pot synthesis of methyl 4-O-benzoyl-3-O-(chloroacetyl)-beta-D-xylopyranoside. Methyl and benzyl alpha-D-xylopyranosides afford the 2,4-dibenzoates in good yield (> 80%) demonstrating 1,3-activation of a triol system. This protection strategy is used to prepare benzyl O-(2,3,5-tri-O-benzoyl-alpha-L-arabinofuranosyl)-(1 --> 3)-2,4-di-O-benzoyl-alpha-D-xylopyranoside from D-xylose and L-arabinose. In the final step, the silver triflate catalyzed glycosylation of benzyl 2,4-di-O-benzoyl-alpha-D-xylopyranoside by 2,3,5-tri-O-benzoyl-alpha-L-arabinofuranosyl chloride is accomplished in 91% yield.