(7R,8R)-5,7-dihydroxy-10-[(2R)-2-hydroxy-3-methylbut-3-enyl]-8-(4-methoxyphenyl)-2,2-dimethyl-7,8-dihydropyrano[3,2-g]chromen-6-one | 1492023-76-3

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 黄酮类化合物
• 英文名称: (7R,8R)-5,7-dihydroxy-10-[(2R)-2-hydroxy-3-methylbut-3-enyl]-8-(4-methoxyphenyl)-2,2-dimethyl-7,8-dihydropyrano[3,2-g]chromen-6-one
• CAS: 1492023-76-3
• 化学式: C₂₆H₂₈O₇
• 分子量: 452.504
• InChiKey: QTSXKTOAGLNANB-YFXJRYMSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  33
• 可旋转键数：
  5
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  105
• 氢给体数：
  3
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  (7R,8R)-5,7-dihydroxy-10-[(2R)-2-hydroxy-3-methylbut-3-enyl]-8-(4-methoxyphenyl)-2,2-dimethyl-7,8-dihydropyrano[3,2-g]chromen-6-one 、 (R)-methoxytrifluoromethylphenylacetyl chloride 生成
  参考文献：
  名称：

  Eriosema chinense: A rich source of antimicrobial and antioxidant flavonoids

  摘要：

  Six prenylated fiavonoids, (2R,3S)-3,5,4'-trihydroxy-6 ''-6 '' dimethylpyrano(2 '',3 '':7,6)-8-(3''', 3'''-dimethylallyl) flavanone, (2R,3S)-3,5,2'-trihydroxy-4'-methoxy-6 '',6 ''-dimethylpyrano(2 '',3 '':7,6)-8-(3''',3'''-dimethylallyl) flavanone, (2R,3R)-3,5,2',4'-tetrahydroxy-6 '',6 ''-dimethylpyrano(2 '',3 '':7,6)-8-(3''',3'''-dimethylallyl) flavanone, 3,5,2',4'-tetrahydroxy-6 '',6 ''-dimethylpyrano(2 '',3 '':7,6)-8-(3''',3'''-dimethylallyl) flavone, (2R,3R,2'''R)-3,5,2'''-trihydroxy-4'-methoxy-6 '',6 ''-dimethylpyrano(2 '',3 '':7,6)-8-(3'''-methylbut-3"-enyl)flavanone, (2R,3R)-3,5-dihydroxy-4'-methoxy-6",6"-dimethylpyrano(2 '',3 '':7,6)-8-(2''',3'''-epoxy-3'''-methyl butyl)flavanone, an isoflavone, 6,7-dimethoxy-5,2',4'-trihydroxyisoflavone, and octaeicosanyl-trans-p-coumarate together with 12 known compounds, were isolated from roots of Eriosema chinense. This structural elucidation was determined by spectroscopic methods. Several isolates and derivatives were evaluated for their antimicrobial and antioxidant activities. Results obtained provide additional evidence showing that the presence of both the free phenolic OH and the lipophilic prenyl groups are crucial for potent antimicrobial activity against yeast, gram positive and gram negative bacteria, whereas the presence of free phenolic OH group is required for strong radical scavenging property. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2013.06.004