D-maltose

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: D-maltose
• 英文别名: maltose；Glucopyranosyl-(1-4)-d-glucopyranose；(2R,3S,4S,5R)-2-(hydroxymethyl)-6-[(2R,3S,4R,5R)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxane-3,4,5-triol
• 化学式: C₁₂H₂₂O₁₁
• 分子量: 342.3
• InChiKey: GUBGYTABKSRVRQ-MSBXVADZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -4.7
• 重原子数：
  23
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  190
• 氢给体数：
  8
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  potassium chromate 、 D-maltose 以 水 为溶剂， 生成 K[Cr2(μ-OH)(D-xylose)2(oxidised D-xylose)2]*H2O
  参考文献：
  名称：

  Transition-metal saccharide chemistry and biology: synthesis, characterisation, redox behaviour, biointeraction and data correlations of dinuclear chromium(III) complexes

  摘要：

  A series of dinuclear chromium(III) complexes has been synthesised by reduction of chromate by a variety of saccharides and related compounds. The complexes have been characterised by various analytical (elemental and ICP-AES analysis, TLC, HPLC) and spectroscopic (UV/VIS, FTIR, EPR, H-1 and C-13 NMR) methods. Antiferromagnetic interactions between the two Cr-III centres have been established by magnetic susceptibility measurements and the hydrolytic stability and redox behaviour of the complexes have been established by extensive electrochemical studies which gave several correlations. The interaction of some of the complexes with DNA has been studied by gel electrophoresis.

  DOI：

  10.1039/dt9950001569
• 作为产物：
  描述：

  D-葡萄糖 、 苯基-α-D-吡喃葡萄糖苷 在 环糊精糖基转移酶 作用下， 以 acidic aq. solution 为溶剂， 反应 24.0h， 生成 D-maltose 、 maltotriose 、 D-gluco-hexopyranosyl-(1->4)-D-gluco-hexopyranosyl-(1->4)-D-gluco-hexopyranosyl-(1->4)-D-gluco-hexopyranose 、 Glc(?1-4)Glc(?1-4)Glc(?1-4)Glc(?1-4)Glc
  参考文献：
  名称：

  Optimized synthesis of specific sizes of maltodextrin glycosides by the coupling reactions of Bacillus macerans cyclomaltodextrin glucanyltransferase

  摘要：

  Bacillus macerans cyclomaltodextrin glucanyltransferase (CGTase, EC 2.4.1.19), in reaction with cyclomaltohexaose and methyl alpha-D-glucopyranoside, methyl beta-D-glucopyranoside, phenyl alpha-D-glucopyranoside, and phenyl beta-D-glucopyranoside gave four kinds of maltodextrin glycosides. The reactions were optimized by using different ratios of the individual D-glucopyranosides to cyclomaltohexaose, from 0.5 to 5.0, to obtain the maximum molar percent yields of products, which were from 68.3% to 78.6%, depending on the particular D-glucopyranoside, and also to obtain different maltodextrin chain lengths. The lower ratios of 0.5-1.0 gave a wide range of sizes from d.p. 2-17 and higher. As the molar ratio was increased from 1.0 to 3.0, the larger sizes, d.p. 9-17, decreased, and the small and intermediate sizes, d.p. 2-8, increased; as the molar ratios were increased further from 3.0 to 5.0, the large sizes completely disappeared, the intermediate sizes, d.p. 4-8, decreased, and the small sizes, d.p. 2 and 3 became predominant. A comparison is made with the synthesis of maltodextrins by the reaction of CGTase with different molar ratios Of D-glucose to cyclomaltohexaose. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2005.11.014
• 作为试剂：
  描述：

  silver;azane 在 D-maltose 、 sodium hydroxide 作用下， 生成 silver
  参考文献：
  名称：

  Polyacrylate-Assisted Size Control of Silver Nanoparticles and Their Catalytic Activity

  摘要：

  In this work, a simple one-step method of silver nanoparticle (NPs) preparation with controlled size is introduced. Silver NPs were prepared by reduction of [Ag(NH3)(2)](+) complex cation by D-maltose in the presence of low concentrations (1 x 10(-10) mol/L to 1 x 10(-7) mol/L) of high-molecular-weight poly(acrylic acid) (PAA). This modification of the reduction reaction results in managing of the prepared silver nanoparticles size in the range from 28 nm (the reaction system without PAA) to 77 nm (system with the highest used PAA concentration). The presence of poly(acrylic acid) influences both nucleation process and also the subsequent stage of nanoparticle growth. The rate of nuclei formation by homogeneous nucleation is affected by PAA due to the formation of the strong complex with silver ions which results in a prolongation of the initiation phase of the reduction process proportionally to PAA concentration. The formation of the adsorption layer of PAA on the surface of the emerging silver nuclei prevents the direct contact between silver ions and nuclei, which is necessary for continuation of the nuclei growth via heterogeneous catalytical mechanism. Because of this restriction, the silver nuclei grow up to their final size by the aggregation mechanism. The as-prepared silver NPs were tested as efficient catalysts for redox reactions. For this purpose, a model reaction, the reduction of organic dye by sodium borohydride was used. The mechanism of this reaction is discussed using the Langmuir-Hinshelwood model of heterogeneous catalysis.

  DOI：

  10.1021/cm400635z

文献信息

• Lieser, T.; Ebert, R., Liebigs Annalen der Chemie, 1937, vol. 532, p. 89 - 94
  作者：Lieser, T.、Ebert, R.

  DOI：——

  日期：——
• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Cu: MVol.B4, 47, page 1546 - 1548
  作者：

  DOI：——

  日期：——
• FREEZE-DRIED FORMULATION FOR ANTIBODY PRODUCTS
  申请人：CENTOCOR, INC.

  公开号：EP0417193B1

  公开（公告）日：1993-08-04
• HAUT- UND/ODER HAARMITTEL ENTHALTEND VERBINDUNGEN MIT ISOPRENOIDER STRUKTUR
  申请人：Beiersdorf AG

  公开号：EP1755546A2

  公开（公告）日：2007-02-28
• PROCESSES AND HOST CELLS FOR GENOME, PATHWAY, AND BIOMOLECULAR ENGINEERING
  申请人：enEvolv, Inc.

  公开号：EP3027754A1

  公开（公告）日：2016-06-08