| 1030624-93-1

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• CAS: 1030624-93-1
• 化学式: C₄₃H₃₈O₇
• 分子量: 666.771
• InChiKey: QBYDZRUSARFBQM-QPHPTHAZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.53
• 重原子数：
  50.0
• 可旋转键数：
  13.0
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.16
• 拓扑面积：
  86.61
• 氢给体数：
  2.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  、 乙酸酐 在 吡啶 作用下， 以87%的产率得到3,4-cis-4-acetoxy-3-O-acetyl-4-4-dehydro-5,7,3',4'-tetra-O-benzyl-(-)-epicatechin
  参考文献：
  名称：

  Synthesis of procyanidins by stepwise- and self-condensation using 3,4-cis-4-acetoxy-3-O-acetyl-4-dehydro-5,7,3′,4′-tetra-O-benzyl-(+)-catechin and (−)-epicatechin as a key building monomer

  摘要：

  3,4-cis-4-Acetoxy-3-O-acetyl-4-dehydro-5,7,3',4'-tetra-O-benzyl-(+)-catechin (1a) or (-)-epicatechin (1b) reacted high regio- and stereo-selectively with 1.5 equiv of the 5,7,3',4'-tetra-O-benzyloxyflavan-3-ol (4a or 4b) in the presence of 1 equiv of TMSOTf to give the corresponding procyanidins. On the other hand, the self-condensation of la in the presence of a catalytic amount of B(C6F5)(3) afforded wide-range procyanidins from dimer to 15-mer like a biomass. (C) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2008.02.173
• 作为产物：
  描述：

  在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 以83%的产率得到
  参考文献：
  名称：

  Synthesis of procyanidins by stepwise- and self-condensation using 3,4-cis-4-acetoxy-3-O-acetyl-4-dehydro-5,7,3′,4′-tetra-O-benzyl-(+)-catechin and (−)-epicatechin as a key building monomer

  摘要：

  3,4-cis-4-Acetoxy-3-O-acetyl-4-dehydro-5,7,3',4'-tetra-O-benzyl-(+)-catechin (1a) or (-)-epicatechin (1b) reacted high regio- and stereo-selectively with 1.5 equiv of the 5,7,3',4'-tetra-O-benzyloxyflavan-3-ol (4a or 4b) in the presence of 1 equiv of TMSOTf to give the corresponding procyanidins. On the other hand, the self-condensation of la in the presence of a catalytic amount of B(C6F5)(3) afforded wide-range procyanidins from dimer to 15-mer like a biomass. (C) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2008.02.173