methyl 2,3,6-tri-O-benzoyl-4-deoxy-α-D-xylo-hexopyranoside | 19488-41-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: methyl 2,3,6-tri-O-benzoyl-4-deoxy-α-D-xylo-hexopyranoside
• 英文别名: methyl 2,3,6-tri-O-benzoyl-4-deoxy-α-D-galactopyranoside；methyl 2,3,6-tri-O-benzoyl-4-deoxy-α-D-glucopyranoside；[(2S,4S,5R,6S)-4,5-dibenzoyloxy-6-methoxyoxan-2-yl]methyl benzoate
• CAS: 19488-41-6
• 化学式: C₂₈H₂₆O₈
• 分子量: 490.51
• InChiKey: JUPVDZTZGGKAHL-UKWMHNODSA-N

物化性质

• 熔点：
  150-153°C
• 沸点：
  609.6±55.0 °C(Predicted)
• 密度：
  1.30±0.1 g/cm3(Predicted)
• 溶解度：
  可溶于氯仿、乙酸乙酯、甲醇

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  36
• 可旋转键数：
  11
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  97.4
• 氢给体数：
  0
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  methyl 2,3,6-tri-O-benzoyl-4-deoxy-α-D-xylo-hexopyranoside 在 4 A molecular sieve 、 三氟化硼乙醚 、 氢溴酸 、 sodium methylate 、 溶剂黄146 、 silver(l) oxide 作用下， 以 甲醇 、 正己烷 、 二氯甲烷 、 苯 为溶剂， 反应 26.0h， 生成 2-(N-Phenylsulfonylindol-3-yl)-ethyl 4-Deoxy-β-D-glucopyranoside
  参考文献：
  名称：

  Hirschmann, Ralph; Nicolaou; Pietranico, Sherrie, Journal of the American Chemical Society, 1993, vol. 115, # 26, p. 12550 - 12568

  摘要：

  DOI：
• 作为产物：
  描述：

  [(2R,3R,4S,5R,6S)-4,5-dibenzoyloxy-6-methoxy-3-methylsulfanylcarbothioyloxyoxan-2-yl]methyl benzoate 在 偶氮二异丁腈 、 三正丁基氢锡 作用下， 以 甲苯 为溶剂， 反应 4.0h， 生成 methyl 2,3,6-tri-O-benzoyl-4-deoxy-α-D-xylo-hexopyranoside
  参考文献：
  名称：

  Hirschmann, Ralph; Nicolaou; Pietranico, Sherrie, Journal of the American Chemical Society, 1993, vol. 115, # 26, p. 12550 - 12568

  摘要：

  DOI：

文献信息

• Non-peptide peptidomimetics and related cyclic hexapeptides
  申请人：The Trustees of the University of Pennsylvania

  公开号：US05811512A1

  公开（公告）日：1998-09-22

  Compounds are provided which are crossreactive with peptides such as those which bind G-protein-linked receptors, together with preparative and therapeutic methods therefor.

  提供的化合物与那些结合G蛋白偶联受体的肽具有交叉反应性，以及用于这些化合物的制备和治疗方法。
• Active-site engineering of nucleotidylyltransferases and general enzymatic methods for the synthesis of natural and "unnatural" UDP- and TDP-nucleotide sugars
  申请人：——

  公开号：US20030055235A1

  公开（公告）日：2003-03-20

  The present invention provides mutant nucleotidylyl-transferases, such as E p , having altered substrate specificity; methods for their production; and methods of producing nucleotide sugars, which utilize these nucleotidylyl-transferases. The present invention also provides methods of synthesizing desired nucleotide sugars using natural and/or modified Ep or other nucleotidyltransferases; and nucleotide sugars sythesized by the present methods. The present invention further provides new glycosyl phosphates, and methods for making them.

  本发明提供了一种突变型核苷酸转移酶，如E p ，具有改变的底物特异性；其生产方法；以及利用这些核苷酸转移酶生产核苷酸糖的方法。本发明还提供了使用天然和/或修饰的Ep或其他核苷酸转移酶合成所需的核苷酸糖的方法；以及通过本发明方法合成的核苷酸糖。本发明进一步提供了新的糖基磷酸酯，及其制造方法。
• The base-catalysed anomerization of dinitrophenyl glycosides: evidence for a novel reaction mechanism
  作者：Leise A. Berven、David Dolphin、Stephen G. Withers

  DOI：10.1139/v90-288

  日期：1990.10.1

  The mechanism of base-catalysed anomerization of per-O-acetylated 2,4-dinitrophenyl-β-D-glucopyranoside in dimethylsulfoxide has been investigated using a variety of techniques. A mechanism involving proton abstraction at C-1 was eliminated by the absence of proton exchange at that center and the measurement of a secondary deuterium kinetic isotope effect for the 1-deuterio substrate. A mechanism involving

  已使用多种技术研究了二甲基亚砜中过氧乙酰化 2,4-二硝基苯基-β-D-吡喃葡萄糖苷的碱催化异构化机制。由于在该中心不存在质子交换以及对 1-氘底物的二次氘动力学同位素效应的测量，消除了涉及 C-1 处质子提取的机制。基于对反应速率的远程取代基影响以及苯基部分与添加的酚盐没有任何交换，使得涉及酚盐脱离和重组的机制不太可能。涉及由二甲基亚磺酰基阴离子的攻击引发的亲核芳族取代生成葡萄糖氧基阴离子中间体的机制与反应性芳基中间体异头化和重组与观察结果一致。观察到紫色的迈森海默复合中间体和观察到的底物之间的交换进一步支持了这种机制……
• The synthesis and hydrolysis of a series of deoxy- and deoxyfluoro-α-d- “glucopyranosyl” phosphates
  作者：Stephen G. Withers、M.David Percival、Ian P. Street

  DOI：10.1016/0008-6215(89)80055-2

  日期：1989.4

  syntheses of three deoxy-α- d - “glucopyranosyl” phosphates and a series of dideoxymonofluoro- and dideoxydifluoro-α- d -glucopyranosyl phosphates are described. Rate constants for their acid-catalyzed hydrolysis were determined. Deoxygenation in the sugar ring was shown to increase the hydrolysis rate to the extent seen previously for acid-catalyzed hydrolysis of a series of phenyl deoxy- d - “glucopyranosides”

  摘要描述了三种脱氧-α-d-“吡喃葡萄糖基”磷酸酯和一系列双脱氧单氟-和双脱氧二氟-α-d-吡喃葡萄糖基磷酸酯的合成。测定其酸催化水解的速率常数。已显示糖环中的脱氧可将水解速率提高至先前对一系列苯基脱氧d-“吡喃葡萄糖苷”进行酸催化水解所见的程度[Mega and Matsushima，J. Biochem。东京，94（1983）1637]。这表明这两个反应的过渡态基本相同。通过确定一系列脱氧和脱氧氟取代的6-脱氧-6-氟-α-d-葡萄糖基吡喃糖基磷酸酯的水解速率，可证明对糖环的取代基作用具有可预测的加性，并且本质上主要是电子的，
• From glycoside hydrolases to thioglycoligases: the synthesis of thioglycosides
  作者：Robert V. Stick、Keith A. Stubbs

  DOI：10.1016/j.tetasy.2004.12.004

  日期：2005.1

  any thioglycosides––only the products of O-glycosylation were formed. However, thioglycosides were formed when a thioglycoligase was used to mediate the reaction between acceptor and donor. In fact, pyranose acceptors possessing a thiol group at C3, C4 or C6 (but not C2) were all capable of conversion into thioglycosides. Some comment is given regarding the mechanism of the various processes.

  用适当的糖基供体和糖苷水解酶或糖合酶处理各种含活性硫醇基的糖基受体，都不能产生任何硫糖苷，只能形成O-糖基化产物。然而，当使用硫代糖基寡糖酶来介导受体和供体之间的反应时，形成了硫代糖苷。实际上，在C3，C4或C6具有巯基的吡喃糖受体（但没有C2）均能够转化为硫糖苷。给出了有关各种过程机制的一些评论。