ent-epifisetinidol-4β-ol | 2958-11-4

• 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: ent-epifisetinidol-4β-ol
• 英文别名: Epifisetinidol-4β-ol；(2R,3R,4S)-3',4',7-trihydroxyflavan-3,4-diol；(-)-2,3-cis-3,4-trans-3',4',7-trihydroxyflavan-3,4-diol；(2R)-2r(H)-Flavan-3t,4c,7,3',4'-pentaol；(2R,3R,4S)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,4,7-triol
• CAS: 2958-11-4
• 化学式: C₁₅H₁₄O₆
• 分子量: 290.273
• InChiKey: OFZBQQUVMQGHDJ-RRFJBIMHSA-N

物化性质

• 沸点：
  583.1±50.0 °C(Predicted)
• 密度：
  1.605±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  21
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  110
• 氢给体数：
  5
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  ent-epifisetinidol-4β-ol 在 盐酸 作用下， 反应 12.0h， 生成 (2R,3R)-2-(3,4-dihydroxyphenyl)-6-[(2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-3,4-dihydro-2H-chromen-4-yl]-8-[(2R,3S,4S)-2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-3,4-dihydro-2H-chromen-4-yl]-3,4-dihydro-2H-chromene-3,5,7-triol
  参考文献：
  名称：

  Oligomeric flavanoids. Part 26. Structure and synthesis of the first profisetinidins with epifisetinidol constituent units

  摘要：

  在甜根子草（Pithecellobium dulce）的树皮中，首次发现了含有（2R,3R）-2,3-顺式-表非瑟罗吲哚链延展单元的第一批寡聚原花青素。通过使用适当的黄烷-3-醇和黄烷-3,4-二醇前体进行半合成，可以明确确定新型二聚体表非瑟罗吲哚-（4β,8）-儿茶素和表儿茶素16与18、三聚体双表非瑟罗吲哚-（4β,6:4β,8）-儿茶素和表儿茶素33与35、非瑟罗吲哚-（4α,8）-儿茶素-（6,4β）-表非瑟罗吲哚37和非瑟罗吲哚-（4α,8）-表儿茶素-（6,4β）-表非瑟罗吲哚39的结构和立体化学。

  DOI：

  10.1039/a701334e
• 作为产物：
  描述：

  rhusopolyphenol A 在 三苯基膦 、 偶氮二甲酸二乙酯 作用下， 以 四氢呋喃 为溶剂， 反应 3.0h， 以75%的产率得到ent-epifisetinidol-4β-ol
  参考文献：
  名称：

  Polyphenols from the bark of Rhus verniciflua and their biological evaluation on antitumor and anti-inflammatory activities

  摘要：

  Bioassay-guided fractionation and chemical investigation of the extract of Rhus verniciflua bark resulted in the identification of six polyphenols, rhusopolyphenols A-F (1-6), together with four known compounds including (2R,3S,10S)-7,8,9,13-tetrahydroxy-2-(3,4-dihydroxyphenyl)-2,3-trans-3,4-cis-2,3,10-trihydrobenzopyrano[3,4-c]-2-benzopyran-1-one (7), peapolyphenol C (8), cilicione-b (9) and (alpha R)-alpha,3,4,2',4'-pentahydroxydihydrochalcone (10). The structures of these polyphenols were elucidated by spectroscopic analysis, including 1D and 2D NMR, and HR-ESIMS, and their absolute configurations were further confirmed by a combination of chemical methods and CD data analysis. All isolates were evaluated for their antiproliferative activities against four human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15), and compounds 4-6, 9 and 10 showed antiproliferative activity against the tested cells, with IC50 values of 3.31-18.51 mu M. On the basis of the expanded understanding that inflammation is a crucial cause of tumor progression, the anti-inflammatory activities of these compounds were determined by measuring nitric oxide (NO) levels in the medium of murine microglia BV-2 cells. Compounds 5 and 10 significantly inhibited NO production in lipopolysaccharide (LPS)-stimulated murine microglia BV-2 cells with IC50 values of 28.90 and 12.70 mu M, respectively. (c) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2013.05.005

文献信息

• Oligomeric flavanoids. Part 26. Structure and synthesis of the first profisetinidins with epifisetinidol constituent units
  作者：Petrus J. Steynberg、Jan P. Steynberg、E. Vincent Brandt、Daneel Ferreira、Richard W. Hemingway

  DOI：10.1039/a701334e

  日期：——

  The natural occurrence of the first oligomeric profisetinidins with (2R,3R)-2,3-cis-epifisetinidol chain extender units is demonstrated in the bark of Pithecellobium dulce (Guamúchil). Semi-synthesis using the appropriate flavan-3-ol and flavan-3,4-diol precursors permits unequivocal structural and stereochemical assignment of the novel dimeric epifisetinidol-(4β,8)-catechin and epicatechins 16 and 18, the trimeric bis-epifisetinidol-(4β,6:4β ,8)-catechin and epicatechins 33 and 35, the fisetinidol-(4α,8)-catechin-(6,4β)- epifisetinidol 37 and fisetinidol-(4α,8)-epicatechin-(6,4β)- epifisetinidol 39.

  在甜根子草（Pithecellobium dulce）的树皮中，首次发现了含有（2R,3R）-2,3-顺式-表非瑟罗吲哚链延展单元的第一批寡聚原花青素。通过使用适当的黄烷-3-醇和黄烷-3,4-二醇前体进行半合成，可以明确确定新型二聚体表非瑟罗吲哚-（4β,8）-儿茶素和表儿茶素16与18、三聚体双表非瑟罗吲哚-（4β,6:4β,8）-儿茶素和表儿茶素33与35、非瑟罗吲哚-（4α,8）-儿茶素-（6,4β）-表非瑟罗吲哚37和非瑟罗吲哚-（4α,8）-表儿茶素-（6,4β）-表非瑟罗吲哚39的结构和立体化学。
• Polyphenols from the bark of Rhus verniciflua and their biological evaluation on antitumor and anti-inflammatory activities
  作者：Ki Hyun Kim、Eunjung Moon、Sang Un Choi、Sun Yeou Kim、Kang Ro Lee

  DOI：10.1016/j.phytochem.2013.05.005

  日期：2013.8

  Bioassay-guided fractionation and chemical investigation of the extract of Rhus verniciflua bark resulted in the identification of six polyphenols, rhusopolyphenols A-F (1-6), together with four known compounds including (2R,3S,10S)-7,8,9,13-tetrahydroxy-2-(3,4-dihydroxyphenyl)-2,3-trans-3,4-cis-2,3,10-trihydrobenzopyrano[3,4-c]-2-benzopyran-1-one (7), peapolyphenol C (8), cilicione-b (9) and (alpha R)-alpha,3,4,2',4'-pentahydroxydihydrochalcone (10). The structures of these polyphenols were elucidated by spectroscopic analysis, including 1D and 2D NMR, and HR-ESIMS, and their absolute configurations were further confirmed by a combination of chemical methods and CD data analysis. All isolates were evaluated for their antiproliferative activities against four human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15), and compounds 4-6, 9 and 10 showed antiproliferative activity against the tested cells, with IC50 values of 3.31-18.51 mu M. On the basis of the expanded understanding that inflammation is a crucial cause of tumor progression, the anti-inflammatory activities of these compounds were determined by measuring nitric oxide (NO) levels in the medium of murine microglia BV-2 cells. Compounds 5 and 10 significantly inhibited NO production in lipopolysaccharide (LPS)-stimulated murine microglia BV-2 cells with IC50 values of 28.90 and 12.70 mu M, respectively. (c) 2013 Elsevier Ltd. All rights reserved.