L-mannose

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: L-mannose
• 英文别名: d-mannose；L-mannopyranose；(3R,4R,5R,6S)-6-(hydroxymethyl)oxane-2,3,4,5-tetrol
• 化学式: C₆H₁₂O₆
• 分子量: 180.158
• InChiKey: WQZGKKKJIJFFOK-JFNONXLTSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.6
• 重原子数：
  12
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  110
• 氢给体数：
  5
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  L-mannose 在 3,5-二硝基水杨酸 作用下， 反应 0.25h， 生成 L-mannonic acid
  参考文献：
  名称：

  Substrate specificity of galactokinase from Streptococcus pneumoniae TIGR4 towards galactose, glucose, and their derivatives

  摘要：

  Galactokinases (GalKs) have attracted significant research attention for their potential applications in the enzymatic synthesis of unique sugar phosphates. The galactokinase (GalKSpe4) cloned from Streptococcus pneumoniae TIGR4 presents a remarkably broad substrate range including 14 diverse natural and unnatural sugars. TLC and MS studies revealed that GalKSpe4 had relaxed activity towards galactose derivatives with modifications on the C-6, 4- or 2-positions. Additionally, GalKSpe4 can also tolerate glucose while glucose derivatives with modifications on the C-6, 4- or 2-positions were unacceptable. More interestingly, GalKSpe4 can phosphorylate L-mannose in moderate yield (43%), while other L-sugars such as L-Gal cannot be recognized by this enzyme. These results are very significant because there is rarely enzyme reported that can phosphorylate such uncommon substrates as L-mannose. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2012.03.095
• 作为产物：
  描述：

  1,2-O-异亚丙基-beta-L-艾杜呋喃糖 在 palladium on activated charcoal 吡啶 、 重铬酸吡啶 、 Amberlite-120 acidic resin 、 camphor-10-sulfonic acid 、 氢气 、 sodium methylate 、 乙酸酐 作用下， 以 丙酮 为溶剂， 生成 L-mannose
  参考文献：
  名称：

  具有生物活性的 L-己糖和 6-脱氧-L-己糖：它们的合成和应用

  摘要：

  该帐户描述了我们最近在开发新方法以制备稀有且具有生物效力的 L-己糖和 6-脱氧-L-己糖的工作，从最便宜的 D-葡萄糖，通过 L-六呋喃糖和 1,6-脱水-β-L -吡喃己糖作为关键组成部分。本文还总结了它们在肝素寡糖、博来霉素 A 2 的碳水化合物部分和 L-acovenose 合成中的应用。

  DOI：

  10.1002/jccs.200400175

文献信息

• Synthesis and antioxidant capacity of novel stable 5-tellurofuranose derivatives
  作者：Elton L. Borges、Marta T. Ignasiak、Yuliia Velichenko、Gelson Perin、Craig A. Hutton、Michael J. Davies、Carl H. Schiesser

  DOI：10.1039/c8cc00565f

  日期：——

  Novel stable tellurium-containing carbohydrate derivatives are prepared from hexitols and pentitols through a double nucleophilic substitution with NaHTe in PEG-400. These tellurosugars react at very high rates with two-electron oxidants, including hypochlorous and peroxynitrous acid, formed at sites of inflammation, and show considerable promise as protective agents against oxidative damage.

  通过在PEG-400中用NaHTe进行双亲核取代，由己糖醇和戊糖醇制备新型稳定的含碲的碳水化合物衍生物。这些碲糖与炎症部位形成的二电子氧化剂（包括次氯酸和过氧亚硝酸）以极高的速率反应，并有望作为抗氧化损伤的保护剂。
• [EN] CONJUGATED ANTISENSE COMPOUNDS AND THEIR USE<br/>[FR] COMPOSÉS ANTISENS CONJUGUÉS ET LEUR UTILISATION
  申请人：ISIS PHARMACEUTICALS INC

  公开号：WO2014179620A1

  公开（公告）日：2014-11-06

  Provided herein are oligomeric compounds with conjugate groups. In certain embodiments, the oligomeric compounds are conjugated to N-Acetylgalactosamine.

  本文提供了具有共轭基团的寡聚化合物。在某些实施例中，这些寡聚化合物与N-乙酰半乳糖结合。
• Indium- and Zinc-Mediated Acyloxyallylation of Protected and Unprotected Aldotetroses—Revealing a Pronounced Diastereodivergence and a Fundamental Difference in the Performance of the Mediating Metal
  作者：Markus Draskovits、Christian Stanetty、Ian R. Baxendale、Marko D. Mihovilovic

  DOI：10.1021/acs.joc.7b03063

  日期：2018.3.2

  were successfully applied to the indium and also zinc-mediated acyloxyallylation, with the latter being a first for an unprotected sugar. The investigation largely benefited from the choice of these more exotic starting materials as it allowed unambiguous identification/quantification of the hexose-products which are available as authentic reference materials. The observed diastereoselectivities indicate

  十多年前，未经保护的醛糖的酰氧基化首次被证实为还原糖的潜在的优雅的二碳同系物（通过臭氧分解）。但是，它在实际案例合成中的应用仍然很少。在如此成功的展示之后，我们回答了有关这一有吸引力的转变的几个悬而未决的问题，我们进行了深入的方法学重新调查。将未受保护和受保护形式的差向异构体四聚体l-赤藓糖和d-苏糖成功应用于铟以及锌介导的酰氧基烯丙基化，后者是未保护糖的首创。该研究很大程度上得益于这些更具异国情调的起始原料的选择，因为它可以对己糖产品进行明确的鉴定/定量，而后者可作为可靠的参考材料。观察到的非对映选择性表明对底物有很强的控制作用（O2处的立体化学），并详细研究了试剂结构对选择性的影响。相关保护和未保护结构之间存在强烈的面部非对映差异，并且铟和锌之间的性能表现出乎意料的显着差异。
• [EN] DI- AND TRI-CATIONIC GLYCOSYLATED ANTITUMOR ETHER LIPIDS, L-GUCOSYLATED GAELS AND RHAMNOSE-LINKED GAELS AS CYTOTOXIC AGENTS AGAINST EPITHELIAL CANCER CELLS AND CANCER STEM CELLS<br/>[FR] ETHERS LIPIDIQUES ANTITUMORAUX GLYCOSYLÉS DI- ET TRICATIONIQUES, GAEL L-GLYCOSYLÉS ET GAEL LIÉS À DU RHAMNOSE UTILISABLES EN TANT QU'AGENTS CYTOTOXIQUES DIRIGÉS CONTRE DES CELLULES ÉPITHÉLIALES CANCÉREUSES ET DES CELLULES SOUCHES CANCÉREUSES
  申请人：UNIV MANITOBA

  公开号：WO2015179983A1

  公开（公告）日：2015-12-03

  Glycosylated Antitumor Ether Lipids (GAELs) kill cancer cells by a nonapoptotic pathway which is an attractive strategy to avoid resistance. To further optimize the antitumor effect, we prepared various analogs of di-, and tri-cationic GAEL analogs differing in the nature of the sugar (D-giucose or L-glucose), the anomeric linkage as well as position of the glycerolipid moiety. The di- and tri-cationic GAELs were synthesized and their in vitro anticancer properties were evaluated against drug resistant and aggressively growing cancer cell lines derived from human breast, prostate, pancreatic and ovarian cancers. The most potent dicationic GAEL analogs were also studied against cancer stem cells obtained from breast BT 474, prostate DU145 and ovarian A2780cp cell lines. Our results indicate that the number of positive charges, the position of the amino substituents and the nature of the sugar have significant effects on the anticancer activities of these compounds. The most active analog kill 50% of the cells at concentration range of 0.5-5μΜ and 90% of the cells at the concentration of 1-10μΜ depending on type of cancer cells.

  糖基化抗肿瘤醚脂质（GAELs）通过一种非凋亡途径杀灭癌细胞，这是一种吸引人的策略，可以避免抗药性。为了进一步优化抗肿瘤效果，我们制备了不同的双-和三-阳离子GAEL类似物，其糖的性质（D-葡萄糖或L-葡萄糖）、缩醛键以及甘油脂类团的位置不同。合成了双-和三-阳离子GAEL类似物，并评估了它们对人类乳腺、前列腺、胰腺和卵巢癌衍生的耐药和快速生长的癌细胞系的体外抗癌性能。最有效的双阳离子GAEL类似物也针对从乳腺BT 474、前列腺DU145和卵巢A2780cp细胞系中获得的癌干细胞进行了研究。我们的结果表明，阳离子数量、氨基取代物的位置和糖的性质对这些化合物的抗癌活性有显著影响。最活跃的类似物在浓度范围为0.5-5μΜ时杀死50%的细胞，在浓度为1-10μΜ时杀死90%的细胞，具体取决于癌细胞类型。
• Novel carbohydrate scaffolds. Assembly of a uridine–mannose scaffold based on tunicamycin
  作者：Domingos J Silva、Michael J Sofia

  DOI：10.1016/s0040-4039(99)02209-1

  日期：2000.2

  A disaccharide scaffold based on tunicamycin was synthesized from d-uridine and l-mannose. The key step in disaccharide assembly was a β-mannosylation performed using Crich’s modification of the sulfoxide glycosylation method. The scaffold described contains two orthogonal derivatization sites and will be used in the search for novel biologically active compounds.

  由衣尿苷和1-甘露糖合成了基于衣霉素的二糖支架。二糖组装的关键步骤是使用亚硫酸盐糖基化方法的Crich修饰法进行的β-甘露糖基化。所述支架包含两个正交衍生位点，将用于寻找新型生物活性化合物。