trans-2,4,6-Trimethoxy-stilben | 22887-34-9

• 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: trans-2,4,6-Trimethoxy-stilben
• 英文别名: 1,3,5-trimethoxy-2-[(E)-2-phenylethenyl]benzene
• CAS: 22887-34-9
• 化学式: C₁₇H₁₈O₃
• 分子量: 270.328
• InChiKey: RIAWNPPNZORUHY-MDZDMXLPSA-N

物化性质

• 沸点：
  424.2±40.0 °C(Predicted)
• 密度：
  1.104±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  20
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  trans-2,4,6-Trimethoxy-stilben 在 palladium on activated charcoal 氢气 、 三溴化硼 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 反应 1.0h， 生成 2,4,6-trihydroxybibenzyl
  参考文献：
  名称：

  Synthesis and Nematocidal Activity of Hydroxystilbenes

  摘要：

  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。

  DOI：

  10.1248/cpb.40.1130
• 作为产物：
  描述：

  1-(苄基磺酰基)-4-硝基苯 在 sodium hydride 、 间氯过氧苯甲酸 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 trans-2,4,6-Trimethoxy-stilben
  参考文献：
  名称：

  4-硝基苯砜的合成及在改性朱莉娅烯烃中的应用

  摘要：

  4-硝基苯基 (NP) 砜成功地用于与羰基化合物的改性 Julia 烯化反应。烯化反应通过羟醛加成、Smiles 重排和消除的顺序进行。砜很容易制备。从廉价的 com 开始，以两步顺序高产。可通过亲核芳族获得对氟硝基苯。被硫醇取代，随后被氧化。在标准下。使适应。NP 砜与多种芳烃之间的改良 Julia 反应。醛提供相应的苯乙烯、芪和肉桂酸酯衍生物。产率 ?97% 和良好的立体选择性。提出了机械原理来解释 obsd。结果。[在 SciFinder (R) 上]

  DOI：

  10.1055/s-2006-939682

文献信息

• Synthesis of 2-phenylnaphthalenes from styryl-2-methoxybenzenes
  作者：Ramesh Mudududdla、Rohit Sharma、Sheenu Abbat、Prasad V. Bharatam、Ram A. Vishwakarma、Sandip B. Bharate

  DOI：10.1039/c4cc05151c

  日期：——

  A new simple and efficient method for the synthesis of 2-phenylnaphthalenes from electron-rich 1-styryl-2-methoxybenzenes has been described. The reaction proceeds via TFA catalyzed C-C bond cleavage followed by intermolecular [4+2]-Diels-Alder cycloaddition of an in situ formed styrenyl trifluoroacetate intermediate. The quantum chemical calculations identified the transition state for the cycloaddition

  已经描述了一种从富电子的1-苯乙烯基-2-甲氧基苯合成2-苯基萘的简单而有效的新方法。该反应通过TFA催化的CC键裂解进行，然后原位形成的苯乙烯基三氟乙酸酯中间体的分子间[4 + 2] -Diels-Alder环加成反应。量子化学计算确定了环加成反应的过渡态，并有助于追踪反应机理。该方法已被有效地用于合成菲骨架和基于萘的强效选择性ER-β激动剂。
• Substrate-Dependent Mechanistic Divergence in Decarboxylative Heck Reaction at Room Temperature
  作者：Asik Hossian、Samir Kumar Bhunia、Ranjan Jana

  DOI：10.1021/acs.joc.6b00100

  日期：2016.3.18

  We report herein a Pd(II)-catalyzed Heck-type coupling between arene carboxylic acids and alkenes at room temperature. Mechanistically, the reaction proceeds in two distinct pathways where electron-rich substrates undergo a palladium(II)-catalyzed decarboxylation and electron-deficient substrates proceed through silver(I)-assisted decarboxylation. Dimethyl sulfoxide (DMSO) or sulfide ligands have positive

  我们在这里报道了在室温下芳烃羧酸和烯烃之间的Pd（II）催化的Heck型偶联。从机理上讲，反应以两种不同的途径进行，富电子的底物经历钯（II）催化的脱羧反应，缺电子的底物通过银（I）辅助的脱羧反应进行。二甲基亚砜（DMSO）或硫化物配体在反应结果中分别具有正作用和负作用。结合本方案用于在温和的反应条件下进行肽修饰。
• Photoinduced oxidative activation of electron-rich arenes: alkenylation with H₂ evolution under external oxidant-free conditions
  作者：Xia Hu、Guoting Zhang、Faxiang Bu、Xu Luo、Kebing Yi、Heng Zhang、Aiwen Lei

  DOI：10.1039/c7sc04634k

  日期：——

  An external oxidant-free cross-coupling of electron-rich arenes and styrenes was enabled by a dual photoredox-cobaloxime catalytic system.

  一个双光氧化还原-钴络合物催化系统实现了对富电子芳烃和苯乙烯的外部氧化剂自由交叉偶联。
• Molho; Coillard, Bulletin de la Societe Chimique de France, 1956, p. 78,90
  作者：Molho、Coillard

  DOI：——

  日期：——
• Synthesis and evaluation of stilbene and dihydrostilbene derivatives as potential anticancer agents that inhibit tubulin polymerization
  作者：Mark Cushman、Dhanapalan Nagarathnam、D. Gopal、Asit K. Chakraborti、Chii M. Lin、Ernest Hamel

  DOI：10.1021/jm00112a036

  日期：1991.8

  An array of cis-, trans-, and dihydrostilbenes and some N-arylbenzylamines were synthesized and evaluated for their cytotoxicity in the five cancer cell cultures A-549 lung carcinoma, MCF-7 breast carcinoma, HT-29 colon adenocarcinoma, SKMEL-5 melanoma, and MLM melanoma. Several cis-stilbenes, structurally similar to combretastatins, were highly cytotoxic in all five cell lines and these were also found to be active as inhibitors of tubulin polymerization. The most active compounds also inhibited the binding of colchicine to tubulin. The most potent of the new compounds, both as a tubulin polymerization inhibitor and as a cytotoxic agent, was (Z)-1-(4-methoxyphenyl)-2-(3,4,5-trimethoxyphenyl)ethene (5a). This substance was almost as potent as combretastatin A-4 (1a), the most active of the combretastatins, as a tubulin polymerization inhibitor. Compound 5a was found to be approximately 140 times more cytotoxic against HT-29 colon adenocarcinoma cells and about 10 times more cytotoxic against MCF-7 breast carcinoma cells than combretastatin A-4. However, 5a was found to be about 20 times less cytotoxic against A-549 lung carcinoma cells, 30 times less cytotoxic against SKMEL-5 melanoma cells, and 7 times less cytotoxic against MLM melanoma cells than combretastatin A-4. The relative potencies 5a > 8a > 6a for the cis, dihydro, and trans compounds, respectively, as inhibitors of tubulin polymerization are in agreement with the relative potencies previously observed for combretastatin A-4 (1a), dihydrocombretastatin A-4 (1c), and trans-combretastatin A-4 (1b). The relative potencies 5a > 8a > 6a were also reflected in the results of the cytotoxicity assays. Structure-activity relationships of this group of compounds are also discussed.