O-(β-D-galactopyranosyl)-2-hydroxyacetaldehyde thiosemicarbazone

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: O-(β-D-galactopyranosyl)-2-hydroxyacetaldehyde thiosemicarbazone
• 英文别名: [(E)-2-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyethylideneamino]thiourea
• 化学式: C₉H₁₇N₃O₆S
• 分子量: 295.316
• InChiKey: QVAAYHIAYDUTEF-GCZULRAASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -2.8
• 重原子数：
  19
• 可旋转键数：
  5
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  182
• 氢给体数：
  6
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  3-O-(β-D-2',3',4',6'-tetra-O-acetyl-galactopyranosyl)-rac-glycerol 在 sodium periodate 、 sodium methylate 、 溶剂黄146 作用下， 以 1,4-二氧六环 、 甲醇 、 水 为溶剂， 反应 30.0h， 生成 O-(β-D-galactopyranosyl)-2-hydroxyacetaldehyde thiosemicarbazone
  参考文献：
  名称：

  Synthesis and SOD-Like Activity of Monosaccharide Derived Thiosemicarbazones

  摘要：

  The synthesis of new O-beta-D-glucopyranosyl- and O-beta-D-galactopyranosyl-2-hydroxyacetaldehyde thiosemicarbazones (5a,b) is reported. Oxidation of allyl glycoside 1 with KMnO4 followed by NaIO4 cleavage of the resulting diol 2 afforded aldehyde 3, which was then condensed with thiosemicarbazide and deprotected to give the target compounds (5a,b). Compounds 5a,b showed hydrolytic stability in neutral solution with half-life periods greater than 70 h. The SOD-mimetic activity was determined for the Cu(II) and Mn(II) complexes of 5a,b (IC50 = 0.2-0.8 mu M). This activity is higher by two orders of magnitude than copper (II) bisthiosemicarbazones. The ESR and UV-Vis data of Cu(II)-5a suggest a tetrahedral distortion of the coordination sphere around the central copper atom which could be the reason for their high SOD-mimetic activity.

  DOI：

  10.1080/07328309808002329

文献信息

• Synthesis and SOD-Like Activity of Monosaccharide Derived Thiosemicarbazones
  作者：Alicia Diaz、Alex Fragoso、Roberto Cao、Vicente Vérez

  DOI：10.1080/07328309808002329

  日期：1998.3.1

  The synthesis of new O-beta-D-glucopyranosyl- and O-beta-D-galactopyranosyl-2-hydroxyacetaldehyde thiosemicarbazones (5a,b) is reported. Oxidation of allyl glycoside 1 with KMnO4 followed by NaIO4 cleavage of the resulting diol 2 afforded aldehyde 3, which was then condensed with thiosemicarbazide and deprotected to give the target compounds (5a,b). Compounds 5a,b showed hydrolytic stability in neutral solution with half-life periods greater than 70 h. The SOD-mimetic activity was determined for the Cu(II) and Mn(II) complexes of 5a,b (IC50 = 0.2-0.8 mu M). This activity is higher by two orders of magnitude than copper (II) bisthiosemicarbazones. The ESR and UV-Vis data of Cu(II)-5a suggest a tetrahedral distortion of the coordination sphere around the central copper atom which could be the reason for their high SOD-mimetic activity.