2,3,4-三-O-苯甲酰基-ALPHA-L-岩藻糖 | 180476-30-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 2,3,4-三-O-苯甲酰基-ALPHA-L-岩藻糖
• 英文名称: 2,3,4-tri-O-benzoyl-α-L-fucopyranosyl trichloroacetimidate
• 英文别名: [(2S,3R,4R,5S,6S)-4,5-dibenzoyloxy-2-methyl-6-(2,2,2-trichloroethanimidoyl)oxyoxan-3-yl] benzoate
• CAS: 180476-30-6
• 化学式: C₂₉H₂₄Cl₃NO₈
• 分子量: 620.87
• InChiKey: PXEXKKMRQLSGBP-FKQKUNFOSA-N

物化性质

• 溶解度：
  可溶于氯仿、可溶于二氯甲烷、乙酸乙酯

计算性质

• 辛醇/水分配系数(LogP)：
  7.1
• 重原子数：
  41
• 可旋转键数：
  11
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  121
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  2,3,4-三-O-苯甲酰基-ALPHA-L-岩藻糖 在 palladium on activated charcoal molecular sieve 、 氢气 、 sodium acetate 作用下， 以 水 、 乙酸乙酯 、 1,2-二氯乙烷 、 异丙醇 为溶剂， 25.0 ℃ 、399.99 kPa 条件下， 反应 24.08h， 生成 6-脱氧-beta-L-半乳糖 1-磷酸酯
  参考文献：
  名称：

  Synthesis of Guanosine 5′-(β-L-Fucopyranosyl)-Diphosphate Revisited

  摘要：

  It will be demonstrated that a successful synthesis of beta-L-fucopyranose-1-phosphate (2), a key intermediate in the preparation of guanosine 5'-(beta-L-fucopyranose)-diphosphate (1), strongly depends on the nature of the acyl protecting groups for the non-anomeric hydroxyl functions. Thus, the perbenzoylated, instead of peracetylated, alpha-L-fucopyranosyl trichloroacetimidate (11) or the corresponding ethyl beta-thiofucopyranoside proved to be a convenient starting compound for the preparation of 2. Further, condensation of N,N'-dicyclohexyl-4-morpholinecarboxamidinium guanosine 5'-morpholidophosphate with excess 2 gave the title compound without concomitant formation of bisguanosine-5'-diphosphate (16).

  DOI：

  10.1080/07328309608005678
• 作为产物：
  描述：

  ethyl 2,3,4-tri-O-acetyl-1-thio-L-fucopyranoside 在 吡啶 、 potassium tert-butylate 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 lithium chloride 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 19.0h， 生成 2,3,4-三-O-苯甲酰基-ALPHA-L-岩藻糖
  参考文献：
  名称：

  Synthesis of Guanosine 5′-(β-L-Fucopyranosyl)-Diphosphate Revisited

  摘要：

  It will be demonstrated that a successful synthesis of beta-L-fucopyranose-1-phosphate (2), a key intermediate in the preparation of guanosine 5'-(beta-L-fucopyranose)-diphosphate (1), strongly depends on the nature of the acyl protecting groups for the non-anomeric hydroxyl functions. Thus, the perbenzoylated, instead of peracetylated, alpha-L-fucopyranosyl trichloroacetimidate (11) or the corresponding ethyl beta-thiofucopyranoside proved to be a convenient starting compound for the preparation of 2. Further, condensation of N,N'-dicyclohexyl-4-morpholinecarboxamidinium guanosine 5'-morpholidophosphate with excess 2 gave the title compound without concomitant formation of bisguanosine-5'-diphosphate (16).

  DOI：

  10.1080/07328309608005678

文献信息

• On-Chip Screening of a Glycomimetic Library with C-Type Lectins Reveals Structural Features Responsible for Preferential Binding of Dectin-2 over DC-SIGN/R and Langerin
  作者：Laura Medve、Silvia Achilli、Sonia Serna、Fabio Zuccotto、Norbert Varga、Michel Thépaut、Monica Civera、Corinne Vivès、Franck Fieschi、Niels Reichardt、Anna Bernardi

  DOI：10.1002/chem.201802577

  日期：2018.9.25

  A library of mannose‐ and fucose‐based glycomimetics was synthesized and screened in a microarray format against a set of C‐type lectin receptors (CLRs) that included DC‐SIGN, DC‐SIGNR, langerin, and dectin‐2. Glycomimetic ligands able to interact with dectin‐2 were identified for the first time. Comparative analysis of binding profiles allowed their selectivity against other CLRs to be probed.

  合成了一个基于甘露糖和岩藻糖的糖模拟物库，并以微阵列格式针对一组包括DC-SIGN，DC-SIGNR，Langerin和dectin-2的C型凝集素受体（CLR）进行了筛选。首次鉴定出能够与dectin-2相互作用的拟模拟配体。结合概况的比较分析允许探测其对其他CLR的选择性。
• <i>S</i> ‐Adamantyl Group Directed Site‐Selective Acylation: Applications in Streamlined Assembly of Oligosaccharides
  作者：Stephanie A. Blaszczyk、Guozhi Xiao、Peng Wen、Hua Hao、Jessica Wu、Bo Wang、Francisco Carattino、Ziyuan Li、Daniel A. Glazier、Bethany J. McCarty、Peng Liu、Weiping Tang

  DOI：10.1002/anie.201903587

  日期：2019.7.8

  The site‐selective functionalization of carbohydrates is an active area of research. Reported here is the surprising observation that the sterically encumbered adamantyl group directed site‐selective acylation at the C2 position of S‐glycosides through dispersion interactions between the adamantyl C−H bonds and the π system of the cationic acylated catalyst, which may have broad implications in many

  碳水化合物的位点选择性功能化是一个活跃的研究领域。这里报道的令人惊讶的观察结果是，空间阻碍的金刚烷基通过金刚烷基 C-H 键和阳离子酰化催化剂的 π 系统之间的分散相互作用，在S-糖苷的 C2 位上进行定向位点选择性酰化，这可能具有广泛的意义在许多其他化学反应中。由于其稳定性、化学正交性和糖基化易于激活，S-糖苷的位点选择性酰化简化了寡糖的合成，并将在复杂碳水化合物的合成中具有广泛的应用。
• [EN] SYNTHESIS OF TIMOSAPONIN BII<br/>[FR] SYNTHÈSE DE TIMOSAPONINE BII
  申请人：PHYTOPHARM PLC

  公开号：WO2009133401A1

  公开（公告）日：2009-11-05

  The invention provides a synthetic route from sarsasapogenin to timosaponin BII a related compounds. A diketone intermediate is provided, which can advantageously used for in situ assembly of complex sugar moieties of the desired glycone end product. The diketone compound is then selectively reduced using a borohydride reducing agent form the desired end product. Certain of the end products and intermediates are novel compounds per se.

  该发明提供了一种从山楂皂素合成至地黄皂苷BII及相关化合物的合成途径。提供了一种二酮中间体，可以优势地用于在原位组装所需糖苷末端产物的复杂糖基。然后使用硼氢化还原剂选择性还原二酮化合物形成所需的最终产物。其中一些最终产物和中间体本身是新颖的化合物。
• Selective Axial-to-Equatorial Epimerization of Carbohydrates
  作者：Hayden M. Carder、Yong Wang、Alison E. Wendlandt

  DOI：10.1021/jacs.2c04743

  日期：2022.7.6

  Radical-mediated transformations have emerged as powerful methods for the synthesis of rare and unnatural branched, deoxygenated, and isomeric sugars. Here, we describe a radical-mediated axial-to-equatorial alcohol epimerization method to transform abundant glycans into rare isomers. The method delivers highly predictable and selective reaction outcomes that are complementary to other sugar isomerization

  自由基介导的转化已成为合成稀有和非天然支链、脱氧和异构糖的有效方法。在这里，我们描述了一种自由基介导的轴向到赤道醇差向异构化方法，可将丰富的聚糖转化为稀有异构体。该方法提供高度可预测和选择性的反应结果，与其他糖异构化方法互补。异构体相互转化的合成效用通过方便的聚糖合成展示，包括一步糖多样化。机理研究表明，位点选择性和非对映选择性都是通过赤道位置的 α-羟基 C-H 键的高选择性 H 原子提取来实现的。
• Synthesis and cytotoxicity evaluation of d- and l-sugar-containing mono- and bidesmosidic ursane-type saponins
  作者：Balla Sylla、Gilles Jost、Serge Lavoie、Jean Legault、Charles Gauthier、André Pichette

  DOI：10.1016/j.bmc.2024.117737

  日期：2024.5

  of ursane-type pentacyclic triterpenoids for pharmacological use is their poor aqueous solubility, which can impede their effectiveness as therapeutics agents. In this study, we present the facile synthesis of ursolic acid monodesmosides and uvaol bidesmosides, incorporating naturally occurring and water-soluble pentoses and deoxyhexose sugar moieties of opposite and -configurations at the C3 or C3/C28

  熊果酸和山楂醇是天然存在的三萜类化合物，具有广泛的药理活性，包括细胞毒性。然而，开发用于药理学用途的乌苏烷型五环三萜类化合物的主要挑战是它们的水溶性差，这可能妨碍它们作为治疗剂的有效性。在这项研究中，我们提出了熊果酸单链苷和乌苏醇双链苷的简便合成，在乌苏烷核心的C3或C3/C28位置掺入了天然存在的水溶性戊糖和脱氧己糖部分的相反和-构型。评估了二十种合成皂苷对肺癌（A549）和结直肠腺癌（DLD-1）细胞系的细胞毒性。值得注意的是，与它们的非细胞毒性母体三萜类化合物相比，所有双锁链乌苏醇皂苷均显示出细胞毒性。对于每个乌苏烷型皂苷系列，最活跃的化合物是 3--α 阿拉伯吡喃糖基熊果酸 () 和 3,28-二-α 吡喃鼠李糖基乌索醇 ()，显示出针对 A549 和 DLD-1 癌症的低微摩尔范围内的 IC 值线。