(17α,20E)-21-(phenyl)-19-norpregna-1,3,5(10),20-tetraene-3,17β-diol

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 类固醇和类固醇衍生物
• 英文名称: (17α,20E)-21-(phenyl)-19-norpregna-1,3,5(10),20-tetraene-3,17β-diol
• 英文别名: 17α-20E-21-phenyl-19-norpregna-1,3,5(10),20-tetraene-3,17β-diol；(17α,20E)-21-(phenyl)-19-norpregna-1,3,5(10),20-tetraene-3,17-diol；17α-E-phenylvinyl estradiol；17Alpha-E-Phenylvinyl Estradiol；(8R,9S,13S,14S,17R)-13-methyl-17-[(E)-2-phenylethenyl]-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-diol
• 化学式: C₂₆H₃₀O₂
• 分子量: 374.523
• InChiKey: QLLGIJVUFZVYAX-LHSCOCHDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.7
• 重原子数：
  28
• 可旋转键数：
  2
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.46
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  乙炔基雌二醇3-乙酸酯 在 sodium hydroxide 、 三乙基硼 、 三正丁基氢锡 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 23.0h， 生成 (17α,20E)-21-(phenyl)-19-norpregna-1,3,5(10),20-tetraene-3,17β-diol
  参考文献：
  名称：

  合成和评估17alpha-20E-21-（4-取代的苯基）-19-norpregna-1,3,5（10），20-丁烯-3,17beta-二醇作为雌激素受体α激素结合结构域的探针。

  摘要：

  作为开发针对雌激素受体α（ERalpha）的激素结合域的探针的计划的一部分，我们使用溶液和固相Pd（0）催化的组合物，制备了一系列4-对位取代的苯基乙烯基雌二醇衍生物方法。使用从转染的BL21细胞分离的ERα激素结合结构域（HDB）评估化合物5a-j的结合亲和力。结果表明，尽管新化合物的相对结合亲和力（25°C下的RBA为1-60％）比雌二醇（100％）要低一些，但大多数化合物的亲和力都高于未取代的母体苯基乙烯基雌二醇（RBA = 9％）。 。由于取代基并未直接基于理化性质产生构效关系，通过分子建模和分子动力学评估了该系列，以确定配体（尤其是对位取代基）与蛋白质之间的关键相互作用。结果表明，观察到的相对结合亲和力与计算的结合能直接相关，并且并列在对位的氨基酸在结合中起着重要而非主导的作用。总之，我们已经确定17α-E-（4-取代的苯基）乙烯基雌二醇为一类对ERalpha-HBD保持显着亲和

  DOI：

  10.1021/jm0205806

文献信息

• Synthesis and evaluation of 17α-(dimethylphenyl)vinyl estradiols as probes of the estrogen receptor-α ligand binding domain
  作者：Robert N. Hanson、Emmett McCaskill、Pakamas Tongcharoensirikul、Robert Dilis、David Labaree、Richard B. Hochberg

  DOI：10.1016/j.steroids.2012.01.003

  日期：2012.4

  As part of our program to explore the influence of small structural modifications on the biological response of the estrogen receptor-alpha (ER alpha), we prepared and evaluated a series of mono-and di-substituted phenyl vinyl estradiols. The target compounds were prepared in 45-80% yields using the Stille coupling reaction and evaluated using competitive binding analysis with the ER alpha-ligand binding domain (hER alpha-LBD) and estrogenic activity (induction of alkaline phosphatase in Ishikawa cells). Results indicated that the 2,4- and 2,5-dimethyl derivatives, 5b and 5c, had the highest relative binding affinity (RBA = 20.5 and 37.3%) and relative stimulatory activity (RSA = 101.0% and 12.3%) of the di-methyl series. (C) 2012 Elsevier Inc. All rights reserved.
• Stereochemical probes for the estrogen receptor: Synthesis and receptor binding of (17α,20EZ)-21-phenyl-19-norpregna-1,3,5(10), 20-tetraene-3,17β-diols
  作者：Robert N. Hanson、Lee W. Herman、Rita Fiaschi、Elio Napolitano

  DOI：10.1016/s0039-128x(96)00201-2

  日期：1996.12

  Previous studies from our laboratory using 17 alpha-E- and 17 alpha-Z-halovinyl and phenylthiovinyl estradiols demonstrated a marked preference for the Z stereochemistry and a significant steric tolerance for the Z-vinyl substituent. To further explore the extent of that stereochemical preference and steric tolerance we have prepared stereoselectively the 17 alpha-E- and 17 alpha-Z-phenylvinyl estradiols (E- and Z-styrylestradiols). The results, in addition to demonstrating a facile preparation of the target compounds, supported the previously observed stereochemical and steric effects. The relative binding affinities for the Z isomer were 3-4-fold greater than the E isomer at both 4 degrees C and 25 degrees C, and only one-half to one-fourth those of estradiol under similar conditions. The developing model for ligand-accessible space within the estrogen receptor suggests that Z-phenylvinyl estradiols may provide interesting and useful probes for mapping the receptor. (C) 1996 by Elsevier Science Inc.