| 1499122-30-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• CAS: 1499122-30-3
• 化学式: C₁₄H₂₀O₄
• 分子量: 252.31
• InChiKey: NIGVQHWDUWHJQZ-FRVYIDGWSA-N

物化性质

• 沸点：
  368.2±42.0 °C(Predicted)
• 密度：
  1.247±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.23
• 重原子数：
  18.0
• 可旋转键数：
  1.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.71
• 拓扑面积：
  62.83
• 氢给体数：
  2.0
• 氢受体数：
  4.0

反应信息

• 作为反应物：
  描述：

  1-萘乙酸 、 在 4-二甲氨基吡啶 、 N,N'-二异丙基碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 以53%的产率得到
  参考文献：
  名称：

  Semisynthesis and Insecticidal Activity of Some Fraxinellone Derivatives Modified in the B Ring

  摘要：

  A series of novel fraxinellone derivatives modified at the C-1 or C-8 position in the B ring were prepared as insecticidal agents against the pre-third-instar larvae of oriental armyworm, Mythimna separata Walker at 1 mg/mL. Five key steric configurations of compounds 2, 3, and 8f,g,j were further determined by single-crystal X-ray diffraction. It was found that the kinds and the amount of the reduction products of fraxinellone were related to the molar ratio between the reduction agent Red-Al and the substrate fraxinellone. Among all of the derivatives, compounds 2 and 8i,j,o displayed more promising insecticidal activity than their precursors fraxinellone and toosendanin. The preliminary structure-activity relationships revealed that the lactone (B-ring) of fraxinellone contributed to the observed insecticidal activity; the double bond at the C-2 position of fraxinellone was not necessary for the insecticidal activity; conversion of the oxygen atom of carbonyl group on the lactone of fraxinellone to a sulfur one does not improve the insecticidal activity; introduction of electron-withdrawing groups on the phenyl ring of 8f, to the benzoyloxy series, could result in more potent compounds.

  DOI：

  10.1021/jf404195m
• 作为产物：
  描述：

  梣酮 在 红铝 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 24.0h， 以6%的产率得到
  参考文献：
  名称：

  Semisynthesis and Insecticidal Activity of Some Fraxinellone Derivatives Modified in the B Ring

  摘要：

  A series of novel fraxinellone derivatives modified at the C-1 or C-8 position in the B ring were prepared as insecticidal agents against the pre-third-instar larvae of oriental armyworm, Mythimna separata Walker at 1 mg/mL. Five key steric configurations of compounds 2, 3, and 8f,g,j were further determined by single-crystal X-ray diffraction. It was found that the kinds and the amount of the reduction products of fraxinellone were related to the molar ratio between the reduction agent Red-Al and the substrate fraxinellone. Among all of the derivatives, compounds 2 and 8i,j,o displayed more promising insecticidal activity than their precursors fraxinellone and toosendanin. The preliminary structure-activity relationships revealed that the lactone (B-ring) of fraxinellone contributed to the observed insecticidal activity; the double bond at the C-2 position of fraxinellone was not necessary for the insecticidal activity; conversion of the oxygen atom of carbonyl group on the lactone of fraxinellone to a sulfur one does not improve the insecticidal activity; introduction of electron-withdrawing groups on the phenyl ring of 8f, to the benzoyloxy series, could result in more potent compounds.

  DOI：

  10.1021/jf404195m