1,2,5,6,8-pentamethoxyxanthone | 66157-58-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 1,2,5,6,8-pentamethoxyxanthone
• 英文别名: 1,3,4,7,8-pentamethoxyxanthone；1,2,5,6,8-Pentamethoxy-9H-xanthen-9-one；1,2,5,6,8-pentamethoxyxanthen-9-one
• CAS: 66157-58-2
• 化学式: C₁₈H₁₈O₇
• 分子量: 346.337
• InChiKey: HYIOXGKOIGXMLT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  25
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  72.4
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  硫酸二甲酯 、 1,7-dihydroxy-3,4,8-trimethoxyxanthone 在 potassium carbonate 作用下， 以 丙酮 为溶剂， 反应 5.0h， 以31.3 mg的产率得到1,2,5,6,8-pentamethoxyxanthone
  参考文献：
  名称：

  Pentaoxygenated xanthones from Bredemeyera floribunda

  摘要：

  A chloroform extract of the roots of Bredemeyera floribunda yielded two new pentaoxygenated xanthones, 1,7-dihydroxy-3,4,8-trimethoxyxanthone and 1,3,7-trihydroxy-4,8-dimethoxyxanthone, and the ethanol extract of the resulting marc yielded 1,3,6-trihydroxy-2,7-dimethoxyxanthone. Structure determination of these pentaoxygenated xanthones was accomplished by spectral analysis, mainly NMR, including normal and inverse detection techniques such as HETCOR and HMBC. Chemical derivatization and comparison to literature data were also used.

  DOI：

  10.1016/0031-9422(95)00103-e

文献信息

• Pentaoxygenated xanthones from Bredemeyera floribunda
  作者：Edilberto R. Silveira、Maria JoséC. Falcão、Alisio Menezes、David G.I. Kingston、Thomas E. Glass

  DOI：10.1016/0031-9422(95)00103-e

  日期：1995.8

  A chloroform extract of the roots of Bredemeyera floribunda yielded two new pentaoxygenated xanthones, 1,7-dihydroxy-3,4,8-trimethoxyxanthone and 1,3,7-trihydroxy-4,8-dimethoxyxanthone, and the ethanol extract of the resulting marc yielded 1,3,6-trihydroxy-2,7-dimethoxyxanthone. Structure determination of these pentaoxygenated xanthones was accomplished by spectral analysis, mainly NMR, including normal and inverse detection techniques such as HETCOR and HMBC. Chemical derivatization and comparison to literature data were also used.