(E)-2,4'-dimethoxystilbene

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: (E)-2,4'-dimethoxystilbene
• 英文别名: (E)-1-methoxy-2-(4-methoxystyryl)benzene；1-methoxy-2-[(E)-2-(4-methoxyphenyl)ethenyl]benzene
• 化学式: C₁₆H₁₆O₂
• 分子量: 240.302
• InChiKey: JWDKGOAVRJBMNS-JXMROGBWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (E)-2,4'-dimethoxystilbene 在 三溴化硼 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 以47 mg的产率得到(E)-2,4'-dihydroxystilbene
  参考文献：
  名称：

  方便快捷地获得白藜芦醇衍生物及其辐射防护活性

  摘要：

  基于芳基硼酸与苯乙烯的钯催化氧化Heck反应，然后以中等至良好的产率脱甲基，可以轻松快速地获得白藜芦醇衍生物。易于合成一系列具有各种官能团的白藜芦醇衍生物。还已经使用大鼠胸腺细胞评估了合成化合物的放射防护活性。结果表明，一些白藜芦醇衍生物有效地保护了胸腺细胞免受辐射诱导的细胞凋亡。

  DOI：

  10.1016/j.bmcl.2016.07.018
• 作为产物：
  描述：

  (4-methoxybenzyl)diphenylphosphine oxide 以62%的产率得到
  参考文献：
  名称：

  Brown Karen M., Lawrence Nicholas J., Liddle John, Muhammad Faiz, Jackson+, Tetrahedron Lett., 35 (1994) N 36, S 6733-6736

  摘要：

  DOI：

文献信息

• Model Guided Development of a Simple Catalytic Method for the Synthesis of Unsymmetrical Stilbenes by Sequential Heck Reactions of Aryl Bromides with Ethylene
  作者：Helen Barlow、Jonas Y. Buser、Hendrik Glauninger、Carla V. Luciani、Joseph R. Martinelli、Niall Oram、Nichole Thompson‐Van Hook、Jeffery Richardson

  DOI：10.1002/adsc.201800167

  日期：2018.7.16

  moieties, but methods for their preparation typically possess numerous inefficiencies. Presented here is a methodology for the two‐step, one pot preparation of unsymmetrical stilbenes via sequential Heck reactions. The first Heck reaction with ethylene gas was analysed as a function of temperature and pressure for electronically differentiated naphthyl bromides and model‐aided reaction optimization was utilized

  丁苯酯是重要且有用的结构部分，但是其制备方法通常具有许多低效的地方。这里介绍的是一种通过连续的Heck反应分两步，一锅制备不对称丁苯甲醚的方法。对于电子分化的萘基溴化物，分析了乙烯气体的第一个Heck反应与温度和压力的关系，并利用模型辅助的反应优化来定义系统。此外，reactNMR用于确定乙烯在可用于Heck反应的普通有机溶剂中的溶解度。最终，开发了优化的顺序Heck反应工艺并将其应用于多种底物，从而可以有效制备不对称的对苯二甲酸酯，包括天然抗氧化剂，紫檀二烯。
• Synthesis and Bioactivity of Resveratrol Analogues
  作者：Junli Ao、Yuanmou Chen、Xiaoling Xu、Xu Zhang、Yue Yu、Peng Yu、Erbing Hua

  DOI：10.14233/ajchem.2014.16226

  日期：——

  It has been reported that resveratrol enhanced SIRT1 expression and significantly mimicked calorie restriction by stimulating Sir2 which is the most homologic homologue of SIRT1 of mammalian. A series of novel resveratrol derivatives were designed and synthesized as novel SIRT1 activator candidates. These synthesized compounds were characterized by spectral (1H NMR) analysis and examined for their Sir2 activation against yeast parental strain-BY4743 at a concentration of 100 μM/L by Bioscreen C MBR machine. Several compounds showed a promising Sir2 activation activity compared with resveratrol. Meanwhile, the structure-activity relationships with Sirt2 activation activities were also discussed.

  据报道，白藜芦醇能够增强SIRT1的表达，并通过刺激与哺乳动物SIRT1具有高度同源性的Sir2，显著模拟热量限制的效果。设计并合成了系列新型白藜芦醇衍生物，作为新型SIRT1激动剂的候选物质。通过核磁共振(1H NMR)光谱分析对合成的化合物进行了表征，并利用Bioscreen C MBR机器在100 μM/L浓度下检测了这些化合物对酵母亲本菌株BY4743的Sir2激活作用。与白藜芦醇相比，多个化合物表现出良好的Sir2激活活性。同时，还讨论了这些化合物的结构-活性关系与Sir2激活活性的相关性。
• Arylation of alkenyl bromides catalysed by platinum complexes
  作者：John M. Brown、Neil A. Cooley、David W. Price

  DOI：10.1039/c39890000458

  日期：——

  Biphosphine platinum complexes catalyse the cross-coupling of arylmagnesium halides and arylethenyl bromides under mild conditions.

  双膦铂络合物在温和条件下催化卤化芳基镁和溴化芳基乙烯基。
• Scope and limitations of the Heck–Matsuda-coupling of phenol diazonium salts and styrenes: a protecting-group economic synthesis of phenolic stilbenes
  作者：Bernd Schmidt、Nelli Elizarov、René Berger、Frank Hölter

  DOI：10.1039/c3ob40420j

  日期：——

  4-Phenol diazonium salts undergo Pd-catalyzed Heck reactions with various styrenes to 4′-hydroxy stilbenes. In almost all cases higher yields and fewer side products were observed, compared to the analogous 4-methoxy benzene diazonium salts. In contrast, the reaction fails completely with 2- and 3-phenol diazonium salts. For these substitution patterns the methoxy-substituted derivatives are superior

  4-苯酚重氮盐与各种苯乙烯进行Pd催化的Heck反应，生成4'-羟基苯乙烯。与类似的4-甲氧基苯重氮盐相比，几乎在所有情况下均观察到更高的收率和更少的副产物。相反，用2-和3-苯酚重氮盐使反应完全失败。对于这些取代方式，甲氧基取代的衍生物是优越的。
• Synthesis and Nematocidal Activity of Hydroxystilbenes
  作者：Mohammad Ahad ALI、Kaoru KONDO、Yoshisuke TSUDA

  DOI：10.1248/cpb.40.1130

  日期：1992.5.25

  Various (E)-hydroxystilbenes were synthesized from (E)/(Z) mixtures of methoxystilbenes through a new (Z)-(E) isomerization method followed dy demethylation. The nematocidal activity appears when methoxystilbenes are demethylated to hydroxystilbenes. For this activity, a hydroxy group at the C-2 or C-3 position is necessary. Thus, 2-hydroxy-, 3-hydroxy-, 2, 6-dihydroxy-, 3, 4-dihydroxy-, 3, 5-dihydroxy-, 2, 2'-dihydroxy-, 3, 3'-dihydroxy-, 3, 4'-dihydroxy-, 2-hydroxy-4-methoxy-, 5-hydroxy-2-methoxy-, 2-hydroxy-6-methoxy-, 6-allyloxy-2-hydroxy-, 3-hydroxy-5-methoxy-, and 5-allyloxy-3-hydroxystilbenes showed rather potent nematocidal activity. The activity of 5-allyloxy-3-hydroxystilbene was the strongest [minimal lethal concentration (MLC)=30 μM]. The activities of the (E) and (Z) isomers were comparable. The activities were also retained, though they were weaker, in the dihydro derivatives, hydroxybibenzyls.

  通过一种新的(Z)-(E)异构化方法随后进行脱甲基反应，从(E)/(Z)混合甲氧基二苯乙烯中合成了多种(E)-羟基二苯乙烯。当甲氧基二苯乙烯脱甲基生成羟基二苯乙烯时，表现出杀线虫活性。为了产生这种活性，C-2或C-3位置上必须有一个羟基。因此，2-羟基-、3-羟基-、2,6-二羟基-、3,4-二羟基-、3,5-二羟基-、2,2'-二羟基-、3,3'-二羟基-、3,4'-二羟基-、2-羟基-4-甲氧基-、5-羟基-2-甲氧基-、2-羟基-6-甲氧基-、6-烯丙氧基-2-羟基-、3-羟基-5-甲氧基-和5-烯丙氧基-3-羟基二苯乙烯表现出相当强的杀线虫活性。5-烯丙氧基-3-羟基二苯乙烯的活性最强[最小致死浓度（MLC）=30 μM]。(E)和(Z)异构体的活性相当。二氢衍生物，羟基联苄中也保留了这些活性，尽管较弱。