4-O-p-methoxybenzyl-D-glucal | 196704-96-8

• 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: 4-O-p-methoxybenzyl-D-glucal
• 英文别名: 4-p-methoxybenzyl-D-glucal；(2R,3S,4R)-2-(hydroxymethyl)-3-[(4-methoxyphenyl)methoxy]-3,4-dihydro-2H-pyran-4-ol
• CAS: 196704-96-8
• 化学式: C₁₄H₁₈O₅
• 分子量: 266.294
• InChiKey: XBQYSEKXGXUUDT-MCIONIFRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.5
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  68.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  4-O-p-methoxybenzyl-D-glucal 在 4-二甲氨基吡啶 、 copper(l) iodide 、 Wilkinson's catalyst 、 1,1'-bis(di-tertbutylphosphino)ferrocene 、 氢气 、 palladium diacetate 、 三乙胺 、 N,N'-二环己基碳二亚胺 、 2,3-二氯-5,6-二氰基-1,4-苯醌 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 、 甲苯 为溶剂， 反应 22.0h， 生成 decytospolide A
  参考文献：
  名称：

  通过钯催化的脱羧烯丙基化可轻松获得顺式2,6-二取代的四氢吡喃：（±）-环草碱和（+）-去细胞肽A和B的总合成

  摘要：

  顺式-2,6-四氢吡喃是生物活性天然产物的重要结构骨架。顺式-2,6-二取代-3,6-二氢吡喃前体作为顺式-2,6-四氢吡喃前体的简便合成方法具有很高的区域选择性和立体选择性，且收率很高。该反应涉及各种3,4-dihydro-2 H-吡喃底物的钯催化脱羧烯丙基化。将此反应扩展至1,2-不饱和碳水化合物可实现具有挑战性的β-C-糖基化。基于此方法，只需简单的步骤即可完成（±）-中心叶lob碱和（+）-去细胞肽A和B的总合成。

  DOI：

  10.1002/chem.201303328
• 作为产物：
  描述：

  D-葡萄烯糖 在 咪唑 、 四丁基氟化铵 、 4-甲基苯磺酸吡啶 、 二异丁基氢化铝 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 17.0h， 生成 4-O-p-methoxybenzyl-D-glucal
  参考文献：
  名称：

  A Highly Convergent Total Synthetic Route to Glycopeptides Carrying a High-Mannose Core Pentasaccharide DomainN-linked to a Natural Peptide Motif

  摘要：

  AbstractN‐Linked glycopeptides were synthesized by condensation of a highmannose anomeric amine bearing a pentasaccharide with aspartic‐acid‐containing tri‐ and pentapeptides through the agency of IIDQ. The pentasaccharide portion, corresponding to the „core”︁ region of all asparagine‐linked glycoproteins, was assembled by means of glycal‐derived thioethyl donors and glycal acceptors. The central mannose residue was established by inversion of the C2 hydroxyl of a glucosyl precursor in the pentasaccharide. The protecting‐group scheme employed allows the extension of the pentasaccharide through the terminal mannose units. While a fully convergent coupling of the high‐mannose carbohydrate to the peptide domain has thus been accomplished for the first time with a fully synthetic sugar, the stereochemical integrity of the anomeric center of the carbohydrate domain was not maintained and a mixture of glycopeptides was obtained.

  DOI：

  10.1002/chem.19970031011

文献信息

• A Highly Convergent Total Synthetic Route to Glycopeptides Carrying a High-Mannose Core Pentasaccharide DomainN-linked to a Natural Peptide Motif
  作者：Samuel J. Danishefsky、Shuanghua Hu、Pier F. Cirillo、Matthias Eckhardt、Peter H. Seeberger

  DOI：10.1002/chem.19970031011

  日期：1997.10

  AbstractN‐Linked glycopeptides were synthesized by condensation of a highmannose anomeric amine bearing a pentasaccharide with aspartic‐acid‐containing tri‐ and pentapeptides through the agency of IIDQ. The pentasaccharide portion, corresponding to the „core”︁ region of all asparagine‐linked glycoproteins, was assembled by means of glycal‐derived thioethyl donors and glycal acceptors. The central mannose residue was established by inversion of the C2 hydroxyl of a glucosyl precursor in the pentasaccharide. The protecting‐group scheme employed allows the extension of the pentasaccharide through the terminal mannose units. While a fully convergent coupling of the high‐mannose carbohydrate to the peptide domain has thus been accomplished for the first time with a fully synthetic sugar, the stereochemical integrity of the anomeric center of the carbohydrate domain was not maintained and a mixture of glycopeptides was obtained.
• A highly convergent synthesis of an N-linked glycopeptide presenting the H-type 2 human blood group determinant
  作者：Zhi-Guang Wang、J. David Warren、Vadim Y. Dudkin、Xufang Zhang、Ulrich Iserloh、Michael Visser、Matthias Eckhardt、Peter H. Seeberger、Samuel J. Danishefsky

  DOI：10.1016/j.tet.2006.02.080

  日期：2006.5

  The total synthesis of an H-type blood group determinant in a model biological setting is described. The construct is comprised of a high mannose core structure with projecting lactose spacers, culminating in a two-copy presentation of the H-type blood group determinant itself. Key reactions that were used in this construction include sulfonamidohydroxylation (see 15 -> 18) and benzoate-directed glycosylation via an activated thiophenyl donor (see 34 -> 36). Another key strategic element involved the epimerization of an interior core glucoside to reach the P-mannoside (see 37 -> 38) required in the ring C sugar of the high mannose core. (c) 2006 Elsevier Ltd. All rights reserved.
• Facile Access to<i>cis</i>-2,6-Disubstituted Tetrahydropyrans by Palladium-Catalyzed Decarboxylative Allylation: Total Syntheses of (±)-Centrolobine and (+)-Decytospolides A and B
  作者：Jing Zeng、Yu Jia Tan、Jimei Ma、Min Li Leow、Davin Tirtorahardjo、Xue-Wei Liu

  DOI：10.1002/chem.201303328

  日期：2014.1.7

  facile synthesis of cis‐2,6‐disubstituted‐3,6‐dihydropyrans as cis‐2,6‐tetrahydropyran precursors has been achieved in high regio‐ and stereoselectivity with high yields. This reaction involves a palladium‐catalyzed decarboxylative allylation of various 3,4‐dihydro‐2H‐pyran substrates. Extending this reaction to 1,2‐unsaturated carbohydrates allowed the achievement of challenging β‐C‐glycosylation. Based

  顺式-2,6-四氢吡喃是生物活性天然产物的重要结构骨架。顺式-2,6-二取代-3,6-二氢吡喃前体作为顺式-2,6-四氢吡喃前体的简便合成方法具有很高的区域选择性和立体选择性，且收率很高。该反应涉及各种3,4-dihydro-2 H-吡喃底物的钯催化脱羧烯丙基化。将此反应扩展至1,2-不饱和碳水化合物可实现具有挑战性的β-C-糖基化。基于此方法，只需简单的步骤即可完成（±）-中心叶lob碱和（+）-去细胞肽A和B的总合成。