dihydroxyacetone

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: dihydroxyacetone
• 化学式: C₁₀H₇F₅O₂
• 分子量: 254.156
• InChiKey: FGQDKAFJSFJJLR-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.49
• 重原子数：
  17.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  26.3
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为产物：
  描述：

  α-溴-2,3,4,5,6-五氟甲基苯酸酯 在 18-冠醚-6 、 硫酸 、 potassium carbonate 、 mercury(II) sulfate 作用下， 以 甲醇 、 丙酮 为溶剂， 反应 12.0h， 生成 dihydroxyacetone
  参考文献：
  名称：

  五氟苯氧基丙酮和五氟苄氧基丙酮在电子碰撞和电子捕获质谱中的对比行为。

  摘要：

  为了找到适合用作电泳释放标签分子标记的新型酮电泳的目的，制备了五氟苯氧基丙酮（1）和五氟苄氧基丙酮（2）。两种酮均通过质谱（MS）的电子捕获（EC）和电子碰撞（EI）模式进行评估。通过EC-MS，1几乎给出了一个离子（根据需要），而2给出了许多离子。在EI-MS中，这种行为被完全颠倒了。为了说明EC质谱图2中的某些离子碎片，假定了阴离子自由基McLafferty型重排和卡宾中性的损失。1的电子冲击在m / z 117（C5F3 +）处产生大量离子，这被认为是二炔阳离子。

  DOI：

  10.1002/(sici)1096-9888(199807)33:7<615::aid-jms674>3.0.co;2-n

文献信息

• In Vitro Antibacterial Phenolic Extracts from “Sugarbag” Pot-Honeys of Australian Stingless Bees (<i>Tetragonula carbonaria</i>)
  作者：C. Flavia Massaro、Daniel Shelley、Tim A. Heard、Peter Brooks

  DOI：10.1021/jf5051848

  日期：2014.12.17

  Australian stingless bee honeys have been shown to exert antioxidant and in vitro antimicrobial properties; however their bioactive factors remained unidentified. This study investigated the antibacterial properties of phenolic extracts from Tetragonula carbonaria honeys. Honeys were harvested from beehives in three sites of South East Australia. Liquid-liquid extractions yielded the phenolic concentrates, for analyses by liquid and gas chromatography mass spectrometry. Antibacterial assays were conducted against Staphylococcus aureus and Klebsiella pneumoniae by in vitro agar diffusion and broth dilution assays. The phenolic extracts averaged to 5.87 mg/100 g of raw honeys, and constituents were 3-phenyllactic acid, lumichrome, diglycosylflavonoids, norisoprenoids. The honeys did not contain methylglyoxal, dihydroxyacetone or phenolics characteristic of Leptospermum nectars. Hydrogen peroxide content amounted up to 155.8 mu M in honeys. Beside the bactericidal effects of hydrogen peroxide at 760 mu M, other antibacterial factors were the phenolic extracts of "sugarbag" honeys that were active at minimum bactericidal concentrations of 1.2-1.8 mg/mL.