benzyl 4,6-di-O-acetyl-2,3-dideoxy-β-D-erythrohex-2-enopyranoside | 81389-85-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃
• 英文名称: benzyl 4,6-di-O-acetyl-2,3-dideoxy-β-D-erythrohex-2-enopyranoside
• 英文别名: [(2R,3S,6R)-3-acetyloxy-6-phenylmethoxy-3,6-dihydro-2H-pyran-2-yl]methyl acetate
• CAS: 81389-85-7
• 化学式: C₁₇H₂₀O₆
• 分子量: 320.342
• InChiKey: WSUQBJMJHPJXQI-GVDBMIGSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  23
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  71.1
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  D-葡萄糖 在 copper(ll) sulfate pentahydrate 、 氢溴酸 、 sodium acetate 、 四氯化碲 、 溶剂黄146 、 锌 作用下， 以 二氯甲烷 、 水 为溶剂， 反应 1.83h， 生成 benzyl 4,6-di-O-acetyl-2,3-dideoxy-α-D-erythro-hex-2-enpyranoside 、 benzyl 4,6-di-O-acetyl-2,3-dideoxy-β-D-erythrohex-2-enopyranoside
  参考文献：
  名称：

  Stereoselective synthesis of pseudoglycosides catalyzed by TeCl4 under mild conditions

  摘要：

  Catalytic amounts of tellurium(IV) tetrachloride were used to promote the O-glycosylation of 3,4,6-tri-O-acetyl-D-glucal to give the corresponding 2,3-unsaturated-O-glycosides. With simple alcohols, the desired compounds were obtained in good yields and excellent anomeric selectivity in a short reaction time using only 2 mol % of the catalyst. The application of the method in the synthesis of a small set of glycopyranosides with rigid or flexible linkers gave the corresponding a anomers as products in good yields. Further applications of some of the synthesized compounds in allylation reaction of aldehydes gave the corresponding homoallylic alcohols in good yields. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2012.09.073

文献信息

• Environmentally Benign Synthesis of 2,3-Unsaturated Glycopyranosides in Task-Specific Ionic Liquid
  作者：Goutam Guchhait、Anup Kumar Misra

  DOI：10.1007/s10562-011-0646-7

  日期：2011.7

  A green reaction condition has been developed for the synthesis of 2,3-unsaturated glycopyranosides by the Ferrier rearrangement of glycals using alcohols and thiols in 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM]·OTf) in excellent yield. [BMIM]·OTf has been applied as a task specific ionic liquid organo-catalyst. Operational simplicity, environmentally benign reaction condition, use

  已经开发了一种绿色反应条件，通过在 1-丁基-3-甲基咪唑鎓三氟甲磺酸盐 ([BMIM]·OTf) 中使用醇和硫醇对糖类进行费里尔重排，以优异的收率合成 2,3-不饱和吡喃糖苷。[BMIM]·OTf 已被用作任务特定的离子液体有机催化剂。该方法的显着特点是操作简单、环境友好的反应条件、使用任务特定的离子液体、反应时间短、收率高。 
• Robust perfluorophenylboronic acid-catalyzed stereoselective synthesis of 2,3-unsaturated <i>O</i>-, <i>C</i>-, <i>N</i>- and <i>S</i>-linked glycosides
  作者：Madhu Babu Tatina、Xia Mengxin、Rao Peilin、Zaher M A Judeh

  DOI：10.3762/bjoc.15.125

  日期：——

  A convenient protocol was developed for the synthesis of 2,3-unsaturated C-, O-, N- and S-linked glycosides (enosides) using 20 mol % perflurophenylboronic acid catalyst via Ferrier rearrangement. Using this protocol, D-glucals and L-rhamnals reacted with various C-, O-, N- and S-nucleophiles to give a wide range of glycosides in up to 98% yields with mainly α-anomeric selectivity. The perflurophenylboronic

  开发了一种方便的方案，用于使用20摩尔％的全氟苯基硼酸催化剂通过Ferrier重排合成2，3-不饱和C-，O-，N-和S-连接的糖苷（烯醇）。使用该方案，D-葡糖醛酸和L-鼠李糖醛与各种C-，O-，N-和S-亲核试剂反应，以高达98％的收率（主要是α-异头异构体选择性）提供各种糖苷。全氟苯基硼酸在非常温和的反应条件下成功催化了多种底物（葡糖醛和亲核试剂）。
• A Highly Efficient Magnetic Iron(III) Nanocatalyst for Ferrier Rearrangements
  作者：Youxian Dong、Zekun Ding、Hong Guo、Le Zhou、Nan Jiang、Heshan Chen、Saifeng Qiu、Xiaoxia Xu、Jianbo Zhang

  DOI：10.1055/s-0037-1611855

  日期：2019.7

  A novel and highly efficient magnetic Fe3O4@C@Fe(III) core–shell catalyst, in which the carbon shell was prepared from lotus leaf, was fabricated. This nanocatalyst was successfully applied in the synthesis of a series of 2,3-unsaturated O-glycosides in excellent yields and with high selectivity, especially in the case of 2-halo O-glycosides, which differ in reactivity from nonsubstituted O-glycosides

  制备了一种新型高效的磁性 Fe3O4@C@Fe(III) 核壳催化剂，其中碳壳由荷叶制备。该纳米催化剂成功地应用于合成一系列 2,3-不饱和 O-糖苷，收率高，选择性高，特别是在反应性与未取代 O-糖苷不同的 2-卤代 O-糖苷的情况下，但以前几乎没有探索过。此外，通过施加外部磁力，催化剂可以很容易地从反应中分离出来，并且至少重复使用五次，而不会显着降低产品的产率。此外，该反应在克级规模上很容易进行，这为未来的应用提供了广阔的前景。
• Ceric(iv) ammonium nitrate-catalyzed glycosidation of glycals: a facile synthesis of 2,3-unsaturated glycosides
  作者：Jhillu S. Yadav、Basi V. Subba Reddy、Sushil Kumar Pandey

  DOI：10.1039/b009973m

  日期：——

  Glycosidation of glycals with alcohols in the presence of a catalytic amount of ceric(IV) ammonium nitrate under neutral conditions proceeds smoothly in refluxing acetonitrile to afford the corresponding 2,3-unsaturated glycosides in excellent yields.

  在温和条件下，以催化量的硝酸铈铵作为催化剂，糖酸内酯与醇在回流的乙腈中进行甘露糖基化反应，能够高效地生成相应的2,3-不饱和糖苷。
• 3,5-Dinitrobenzoic acid catalyzed synthesis of 2,3-unsaturated O- and S-glycosides and tetrahydropyranylation of alcohols and phenols
  作者：Naganjaneyulu Bodipati、Srinivasa Rao Palla、Venkateshwarlu Komera、Rama Krishna Peddinti

  DOI：10.1016/j.tetlet.2014.10.093

  日期：2014.12

  A simple procedure for the synthesis of 2,3-unsaturated glycosides in acetonitrile and tetrahydropyranylation of alcohols and phenols in dichloromethane in the presence of 3,5-dinitrobenzoic acid is described. A variety of alcohols and thiols are reacted with glycals to give the desired products in high yields with high α-selectivity.

  描述了一种简单的程序，用于在乙腈中合成2,3-不饱和糖苷以及在3,5-二硝基苯甲酸存在下在二氯甲烷中将醇和酚进行四氢吡喃基化。使多种醇和硫醇与缩醛反应，以高收率和高α选择性得到所需产物。