2,3,4,6-tetra-O-methyl-D-mannose | 57793-53-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,4,6-tetra-O-methyl-D-mannose
• 英文别名: 2,3,4,6-tetra-O-methyl-α-D-mannopyranose；O²,O³,O⁴,O⁶-tetramethyl-D-mannose；O²,O³,O⁴,O⁶-tetramethyl-α-D-mannopyranose；α-(2,3,4,6-tetra-O-methyl)mannopyranose；(2S*,3S*,4S*,5R*,6R*)-3,4,5-Trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-ol；(2S,3S,4S,5R,6R)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-ol
• CAS: 57793-53-0
• 化学式: C₁₀H₂₀O₆
• 分子量: 236.265
• InChiKey: AQWPITGEZPPXTJ-ZJDVBMNYSA-N

物化性质

• 沸点：
  324.4±42.0 °C(Predicted)
• 密度：
  1.14±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -1
• 重原子数：
  16
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  66.4
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  2,3,4,6-tetra-O-methyl-D-mannose 、 N,N-Diethyl-N-[[[(2-propenyloxy)carbonyl]amino]sulfonyl]ethanaminium 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 6.0h， 以73%的产率得到prop-2-enyl N-[(2R,3S,4S,5R,6R)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]carbamate
  参考文献：
  名称：

  一种使用 Burgess 试剂立体选择性合成 α- 和 β- 糖胺的新方法

  摘要：

  尽管从生物学和医学的角度来看，糖基胺构成了一组重要的碳水化合物，但它们的合成方法通常缺乏底物的通用性和/或导致可变的立体选择性，尤其是在复杂的环境中。在这篇通讯中，我们报告了一种使用 Burgess 试剂合成 α- 和 β- 糖基胺的操作简单的方法，该方法以最少的合成步骤克服了许多这些限制。

  DOI：

  10.1021/ja049293c
• 作为产物：
  描述：

  methyl 2,3,4,6-tetramethylmannoside 在 盐酸 作用下， 以0.146 g的产率得到2,3,4,6-tetra-O-methyl-D-mannose
  参考文献：
  名称：

  一种使用 Burgess 试剂立体选择性合成 α- 和 β- 糖胺的新方法

  摘要：

  尽管从生物学和医学的角度来看，糖基胺构成了一组重要的碳水化合物，但它们的合成方法通常缺乏底物的通用性和/或导致可变的立体选择性，尤其是在复杂的环境中。在这篇通讯中，我们报告了一种使用 Burgess 试剂合成 α- 和 β- 糖基胺的操作简单的方法，该方法以最少的合成步骤克服了许多这些限制。

  DOI：

  10.1021/ja049293c

文献信息

• Methods And Systems For Growing Plants Using Silicate-Based Substrates, Cultivation Of Enhanced Photosynthetic Productivity And Photosafening By Utilization Of Exogenous Glycopyranosides For Endogenous Glycopyranosyl-Protein Derivatives, And Formulations, Processes And Systems For The Same
  申请人：Innovation Hammer, LLC

  公开号：US20140331555A1

  公开（公告）日：2014-11-13

  Methods for promoting plant growth based on novel photosafening treatment regimes with glycopyranosides including glycopyranosylglycopyranosides, and aryl-a-D-glycopyranosides, and more specifically, with one or more compounds comprising terminal mannosyl-triose, optionally in the presence of light enhanced by one or more light reflecting and/or refracting members such as silicon-based substrates. Furthermore, chemical synthesis processes for the above compounds are disclosed for general application to plants. Silicate microbeads of the like are distributed over the ground or substrate in which roots of a plant are supported and planted, beneath and around a plant in a manner that light is refracted or reflected toward the phylloplane.

  基于新型光保护处理方案促进植物生长的方法，包括甘露聚糖苷类化合物，如甘露聚糖苷和芳基-a-D-甘露聚糖苷，更具体地，使用含有端基甘露三糖的一个或多个化合物，可选地在存在硅基基底等一个或多个反射和/或折射光的成员的情况下增强光线。此外，还公开了上述化合物的化学合成过程，以供普遍应用于植物。类似的硅酸盐微珠分布在植物的根部支撑和种植的地面或基质上，在植物的下方和周围，使光线以折射或反射的方式朝向叶面。
• Perfluoroalkyl-containing complexes, process for their production as well as their use
  申请人：Schirmer Heiko

  公开号：US20070020183A1

  公开（公告）日：2007-01-25

  The invention relates to the subjects that are characterized in the claims, namely perfluoroalkyl-containing metal complexes with an N-alkyl group of general formula 1, process for their production and their use in NMR and x-ray diagnosis, radiodiagnosis, and radiotherapy, as well as in MRT lymphography.

  该发明涉及到声明中所描述的主题，即具有通用公式1中的N-烷基基团的全氟烷基含金属络合物，其生产过程以及它们在核磁共振和X射线诊断、放射诊断和放射治疗以及MRT淋巴造影中的用途。
• New Method for Regioselective Glycosylation Employing Saccharide Oxyanions
  作者：Martin Matwiejuk、Joachim Thiem

  DOI：10.1002/ejoc.201100861

  日期：2011.10

  As an alternative concept for glycosylation, the prior activation of acceptor hydroxy groups for selective glycosidic bond formation, was investigated to give complex oligosaccharides. Oxyanions obtained from partially protected saccharides were glycosylated by employing glycopyranosyl halides, and the regiochemical results were studied. Initially, partially methylated methyl-α-D-glucopyranosides were

  作为糖基化的替代概念，研究了先激活受体羟基以形成选择性糖苷键，以得到复杂的寡糖。从部分保护的糖类中获得的氧阴离子通过使用吡喃糖基卤化物进行糖基化，并研究了区域化学结果。最初，部分甲基化的甲基-α-D-吡喃葡萄糖苷被用作模型系统来研究碱基促进糖基化的基本机制原理。实现了高区域选择性和立体特异性糖苷键的形成，并且该方法的范围通过不同的全苄化糖基供体进行了扩展。
• TOLL-LIKE RECEPTOR 9 AGONISTS
  申请人：Nagata Hiroyuki

  公开号：US20100016250A1

  公开（公告）日：2010-01-21

  The present invention provides TLR9 agonists comprising, as an active ingredient, a compound represented by formula (I): (wherein a represents 0 or 1; n represents an integer of 0 to 2; m represents an integer of 0 to 5; X 1 and X 2 each independently represent a hydrogen atom or hydroxy; Y represents an oxygen atom or a sulfur atom; -Q 1 -represents —O— or the like; -Q 2 - represents —O— or the like; -Z- represents —O— or the like; R 1 , R 3 and R 4 each independently represent hydroxy or the like; R 2 and R 5 each independently represent a hydrogen atom, hydroxy or the like; and A represents 6-aminopurin-9-yl or the like) or a pharmaceutically acceptable salt thereof, and the like.

  本发明提供了TLR9激动剂，其包含以下化合物作为活性成分，该化合物由式(I)表示：（其中a表示0或1；n表示0到2的整数；m表示0到5的整数；X1和X2各自独立地表示氢原子或羟基；Y表示氧原子或硫原子；-Q1-表示-O-或类似物；-Q2-表示-O-或类似物；-Z-表示-O-或类似物；R1、R3和R4各自独立地表示羟基或类似物；R2和R5各自独立地表示氢原子、羟基或类似物；A表示6-氨基嘌呤-9-基或类似物）或其药学上可接受的盐等。
• Methods and systems for growing plants using silicate-based substrates, cultivation of enhanced photosynthetic productivity and photosafening by utilization of exogenous glycopyranosides for endogenous glycopyranosyl-protein derivatives, and formulations, processes and systems for the same
  申请人：Innovation Hammer, LLC

  公开号：US10010029B2

  公开（公告）日：2018-07-03

  Methods for promoting plant growth based on novel photosafening treatment regimes with glycopyranosides including glycopyranosylglycopyranosides, and aryl-a-D-glycopyranosides, and more specifically, with one or more compounds comprising terminal mannosyl-triose, optionally in the presence of light enhanced by one or more light reflecting and/or refracting members such as silicon-based substrates. Furthermore, chemical synthesis processes for the above compounds are disclosed for general application to plants. Silicate microbeads of the like are distributed over the ground or substrate in which roots of a plant are supported and planted, beneath and around a plant in a manner that light is refracted or reflected toward the phylloplane.

  本发明公开了基于新型光发酵处理机制的促进植物生长的方法，该机制使用的糖吡喃糖苷包括糖吡喃糖基糖吡喃糖苷和芳基-a-D-糖吡喃糖基糖吡喃糖苷，更具体地说，使用一种或多种包含末端甘露三糖的化合物，可选择在由一种或多种光反射和/或折射部件（如硅基底物）增强的光存在下进行。此外，还公开了上述化合物的化学合成工艺，可普遍应用于植物。类似的硅酸盐微珠分布在支撑和种植植物根系的地面或基质上，在植物的下方和周围，光线被折射或反射到植物体上。