[(5S,5aR,8aR,9S)-9-(2,6-dichloro-3,4,5-trimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-5-yl] propanoate | 1458601-39-2

• 分子结构分类: 有机化合物 - 木脂素、新木脂素和相关化合物 - 木脂素内酯
• 英文名称: [(5S,5aR,8aR,9S)-9-(2,6-dichloro-3,4,5-trimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-5-yl] propanoate
• CAS: 1458601-39-2
• 化学式: C₂₅H₂₄Cl₂O₉
• 分子量: 539.366
• InChiKey: PWADBLVRIPIKJP-RNTRLXRYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  36
• 可旋转键数：
  7
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  98.8
• 氢给体数：
  0
• 氢受体数：
  9

反应信息

• 作为产物：
  描述：

  鬼臼毒素 在 N-氯代丁二酰亚胺 、 三氟化硼乙醚 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 24.0h， 生成 (5R,5aR,8aR,9S)-9-(2,6-dichloro-3,4,5-trimethoxyphenyl)-8-oxo-5,5a,6,8,8a,9-hexahydrofuro[3',4':6,7]naphtho[2,3-d][1,3]dioxol-5-yl propionate 、 [(5S,5aR,8aR,9S)-9-(2,6-dichloro-3,4,5-trimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-5-yl] propanoate
  参考文献：
  名称：

  Insight into dihalogenation of E-ring of podophyllotoxins, and their acyloxyation derivatives at the C4 position as insecticidal agents

  摘要：

  Unexpected sequential E-ring dihalogenation of podophyllotoxin analogues is reported. It demonstrated that a chlorine/bromine atom was prior introduced at the C2' position of podophyllotoxin, and the corresponding free rotation of E-ring around the C1-C1' bond of 2'-chloro or 2'-bromopodophyllotoxin was restricted. When 2'-chloro or 2'-bromopodophyllotoxin reacted with N-chlorosuccinimide (NCS), the chlorine atom was regioselectively introduced at their C6' position on the E-ring. Whereas 2'-chloro or 2'-bromopodophyllotoxin reacted with NBS, the bromine atom was regioselectively introduced at their C5 position on the B-ring. When 2'-chloropodophyllotoxin reacted with different carboxylic acids in the presence of BF3 center dot Et2O, the steric effect of its E-ring for stereoselective synthesis of 4 beta-acyloxy-2'-chloropodophyllotoxin derivatives was observed. The insecticidal activity of 2'(2',6')-(di)halogen-substituted podophyllotoxin derivatives were evaluated with Mythimna separata Walker. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2013.08.044

文献信息

• Insight into dihalogenation of E-ring of podophyllotoxins, and their acyloxyation derivatives at the C4 position as insecticidal agents
  作者：Zhiping Che、Xiang Yu、Lingling Fan、Hui Xu

  DOI：10.1016/j.bmcl.2013.08.044

  日期：2013.10

  Unexpected sequential E-ring dihalogenation of podophyllotoxin analogues is reported. It demonstrated that a chlorine/bromine atom was prior introduced at the C2' position of podophyllotoxin, and the corresponding free rotation of E-ring around the C1-C1' bond of 2'-chloro or 2'-bromopodophyllotoxin was restricted. When 2'-chloro or 2'-bromopodophyllotoxin reacted with N-chlorosuccinimide (NCS), the chlorine atom was regioselectively introduced at their C6' position on the E-ring. Whereas 2'-chloro or 2'-bromopodophyllotoxin reacted with NBS, the bromine atom was regioselectively introduced at their C5 position on the B-ring. When 2'-chloropodophyllotoxin reacted with different carboxylic acids in the presence of BF3 center dot Et2O, the steric effect of its E-ring for stereoselective synthesis of 4 beta-acyloxy-2'-chloropodophyllotoxin derivatives was observed. The insecticidal activity of 2'(2',6')-(di)halogen-substituted podophyllotoxin derivatives were evaluated with Mythimna separata Walker. (C) 2013 Elsevier Ltd. All rights reserved.