7,8-dihydroxy-3',4'-dimethoxyisoflavane

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 异黄酮类化合物
• 英文名称: 7,8-dihydroxy-3',4'-dimethoxyisoflavane
• 英文别名: HIR-11；3,4-dihydro-7,8-dihydroxy-3-(3,4-dimethoxyphenyl)-2H-1-benzopyran；7,8-Dihydroxy-3'',4''-dimethoxyisoflavan；3-(3,4-dimethoxyphenyl)-3,4-dihydro-2H-chromene-7,8-diol
• 化学式: C₁₇H₁₈O₅
• 分子量: 302.327
• InChiKey: WGXHTRSZNNBRAN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  68.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  7,8-dihydroxy-3',4'-dimethoxyisoflavane 、 二氯二苯甲烷 在 三乙胺 作用下， 以 吡啶 、 正己烷 、 二氯甲烷 、 水 为溶剂， 生成 3,4-dihydro-7,8-diphenylmethylenedioxy-3-(3,4-dimethoxyphenyl)-2H-1-benzopyran
  参考文献：
  名称：

  Benzopyrans and use thereof in treating vascular diseases

  摘要：

  公式为I ##STR1## 中的异黄酮，其中基团OR、R'、R"和环B的定义如规范中所述，具有有价值的药理特性，特别适用于治疗血管疾病。它们可通过已知的方法制备。

  公开号：

  US04814346A1
• 作为产物：
  描述：

  7,8-dihydroxy-3',4'-dimethoxyisoflavone 在 5%-palladium/activated carbon 、 氢气 、 溶剂黄146 作用下， 以 乙醇 、 水 为溶剂， 反应 10.0h， 以50%的产率得到7,8-dihydroxy-3',4'-dimethoxyisoflavane
  参考文献：
  名称：

  Synthesis of Various Kinds of Isoflavones, Isoflavanes, and Biphenyl-Ketones and Their 1,1-Diphenyl-2-picrylhydrazyl Radical-Scavenging Activities

  摘要：

  合成了四十八种异黄酮（8）、三十一种异黄烷（9）以及四十七种联苯酮（10, 10′），这些化合物是由十一种取代酚（11）和六种苯乙酸（12）合成的。其中，有七十五种化合物是新发现的。这些化合物的自由基清除活性在pH 6.0下使用1,1-二苯基-2-吡唑啉酮（DPPH）进行了评估。我们发现，在四十三种含有儿茶酚基的化合物中，三十九种在A环或B环上表现出与儿茶素相似的高活性（ED50=12—54 μM）。在这些情况下，它们结构的其他部分似乎对活性影响不大。许多6-或8-羟基异黄烷（9E—I）及其联苯酮衍生物（10E—H）也显示出高活性（ED50=<50 μM），而它们对应的异黄酮（8E—I）则完全没有活性。具有在C5位增加羟基（9D）或在C6位增加甲氧基（9J）的7-羟基异黄烷则展现出高活性（ED50=26—32 μM）。本研究表明，天然异黄酮通过在C6、C8或C3′位置的羟基化，或通过代谢或生物转化形成异黄烷（9）和/或联苯酮衍生物（10′），具有表现抗氧化活性的可能性。

  DOI：

  10.1248/cpb.57.346

文献信息

• Bicyclic compounds
  申请人：Zyma SA

  公开号：EP0267155A2

  公开（公告）日：1988-05-11

  Isoflavans of the formula I wherein the groups OR, R', R" and ring B are as defined in the specification, exhibit valueable pharmacological properties, especially for the treatment of vascular diseases. They are prepared by methods known per se.

  式 I 的异黄酮（其中基团 OR、R'、R "和环 B 如说明书中所定义）具有宝贵的药理特性，特别是在治疗血管疾病方面。 它们是通过本身已知的方法制备的。
• Structure–activity relationship studies of flavonoids as potent inhibitors of human platelet 12-hLO, reticulocyte 15-hLO-1, and prostate epithelial 15-hLO-2
  作者：Yesseny Vasquez-Martinez、Rachana V. Ohri、Victor Kenyon、Theodore R. Holman、Silvia Sepúlveda-Boza

  DOI：10.1016/j.bmc.2007.07.036

  日期：2007.12

  Human lipoxygenase (hLO) isozymes have been implicated in a number of disease states and have attracted much attention with respect to their inhibition. One class of inhibitors, the flavonoids, have been shown to be potent lipoxygenase inhibitors but their study has been restricted to those compounds found in nature, which have limited structural variability. We have therefore carried out a comprehensive study to determine the structural requirements for flavonoid potency and selectivity against platelet 12-hLO, reticulocyte 15-hLO-1, and prostate epithelial 15-hLO-2. We conclude from this study that catechols are essential for high potency, that isoflavones and isoflavanones tend to select against 12-hLO, that isoflavans tend to select against 15-hLO-1, but few flavonoids target 15-hLO-2. (C) 2007 Elsevier Ltd. All rights reserved.
• Enzymatic Studies of Isoflavonoids as Selective and Potent Inhibitors of Human Leukocyte 5-Lipo-Oxygenase
  作者：Carolina Mascayano、Victoria Espinosa、Silvia Sepúlveda-Boza、Eric K. Hoobler、Steve Perry、Giovanni Diaz、Theodore R. Holman

  DOI：10.1111/cbdd.12469

  日期：2015.7

  Continuing our search to find more potent and selective 5‐LOX inhibitors, we present now the enzymatic evaluation of seventeen isoflavones (IR) and nine isoflavans (HIR), and their in vitro and in cellulo potency against human leukocyte 5‐LOX. Of the 26 compounds tested, 10 isoflavones and 9 isoflavans possessed micromolar potency, but only three were selective against 5‐LOX (IR‐2, HIR‐303, and HIR‐309), with IC50 values at least 10 times lower than those of 12‐LOX, 15‐LOX‐1, and 15‐LOX‐2. Of these three, IR‐2 (6,7‐dihydroxy‐4‐methoxy‐isoflavone, known as texasin) was the most selective 5‐LOX inhibitor, with over 80‐fold potency difference compared with other isozymes; Steered Molecular Dynamics (SMD) studies supported these findings. The presence of the catechol group on ring A (6,7‐dihydroxy versus 7,8‐dihydroxy) correlated with their biological activity, but the reduction of ring C, converting the isoflavones to isoflavans, and the substituent positions on ring B did not affect their potency against 5‐LOX. Two of the most potent/selective inhibitors (HIR‐303 and HIR‐309) were reductive inhibitors and were potent against 5‐LOX in human whole blood, indicating that isoflavans can be potent and selective inhibitors against human leukocyte 5‐LOX in vitro and in cellulo.
• US4814346A
  申请人：——

  公开号：US4814346A

  公开（公告）日：1989-03-21