(E)-2-(4-methoxyphenyl)-3-methyl-5-(prop-1-enyl)benzo[b]furan | 40341-58-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 2-芳基苯并呋喃类黄酮
• 英文名称: (E)-2-(4-methoxyphenyl)-3-methyl-5-(prop-1-enyl)benzo[b]furan
• 英文别名: 2-(4-methoxyphenyl)-3-methyl-5-(E)-propenylbenzofuran；eupomatenoid-15；2-(4-methoxyphenyl)-3-methyl-5-[(E)-prop-1-enyl]benzo[b]furan；2-(4-methoxyphenyl)-3-methyl-5-[(E)-prop-1-enyl]-1-benzofuran
• CAS: 40341-58-0
• 化学式: C₁₉H₁₈O₂
• 分子量: 278.351
• InChiKey: WGNUABUESDBLCY-SNAWJCMRSA-N

物化性质

• 沸点：
  417.1±33.0 °C(Predicted)
• 密度：
  1.100±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.3
• 重原子数：
  21
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.16
• 拓扑面积：
  22.4
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  2,3,5-tribromo-2,3-dihydrobenzofuran 在 1,2-双(二苯基膦)乙烷氯化镍 氢氧化钾 、 溴 、 叔丁基锂 、 zinc(II) chloride 作用下， 以 四氢呋喃 、 乙醚 、 乙醇 、 二氯甲烷 、 正戊烷 为溶剂， 反应 32.17h， 生成 (E)-2-(4-methoxyphenyl)-3-methyl-5-(prop-1-enyl)benzo[b]furan
  参考文献：
  名称：

  Bach, Thorsten; Bartels, Marc, Synthesis, 2003, # 6, p. 925 - 939

  摘要：

  DOI：

文献信息

• 2,3-Disubstituted and 2,3,5-Trisubstituted Benzofurans by Regioselective Pd-Catalyzed Cross-coupling Reactions; a Short Synthesis of Eupomatenoid-15
  作者：Thorsten Bach、Marc Bartels

  DOI：10.1055/s-2001-16052

  日期：——

  2,3-Dibromobenzofuran (1) and 2,3,5-tribromobenzofuran (2) undergo regioselective Sonogashira- and Negishi-type cross-coupling reactions at the 2-position. Subsequent substitution reactions at C-3 are possible for the cross-coupling products obtained from compound 1. A regioselective functionalization of the 3,5-dibromobenzofurans derived from substrate 2 was achieved by an halogen-metal exchange which occurred selectively at the 3-position. In a conclusive reaction step cross-coupling reactions at C-5 were used to build up 2,3,5-trisubstituted benzofurans. As an example, the synthesis of eupomatenoid-15 (8) is described.

  2,3-二溴苯并呋喃（1）和2,3,5-三溴苯并呋喃（2）在2-位点进行区域选择性的Sonogashira型和Negishi型交叉偶联反应。从化合物1得到的交叉偶联产物在C-3位可以进行后续取代反应。通过对2来自底物2的3,5-二溴苯并呋喃进行区域选择性功能化，实现了在3-位点选择性发生卤素-金属交换。在最终的反应步骤中，利用C-5位的交叉偶联反应构建了2,3,5-三取代的苯并呋喃。作为一个例子，描述了eupomatenoid-15（8）的合成。
• Activity of Neolignans Isolated from Piper regnellii (MIQ.) C. DC. var. pallescens (C. DC.) YUNCK against Trypanosoma cruzi
  作者：Patrícia Shima Luize、Tânia Ueda-Nakamura、Benedito Prado Dias Filho、Diógenes Aparício Garcia Cortez、Celso Vataru Nakamura

  DOI：10.1248/bpb.29.2126

  日期：——

  The in vitro antiproliferative effects of 4 neolignans purified from the ethyl-acetate extract from leaves of Piper regnellii (MIQ.) C. DC. var. pallescens (C. DC.) YUNCK against Trypanosoma cruzi were investigated. These isolated compounds were identified through spectral analyses of UV, EI-MS, 1H-, 13C-NMR, H–H COSY, gNOE, HETCOR, and HMBC. The compounds eupomatenoid-5, eupomatenoid-6, and conocarpan showed considerable activity against epimastigote forms of T. cruzi, with 50% inhibition concentrations (IC50) of 7.0, 7.5, and 8.0 μg/ml respectively. After methylation, these compounds showed a lessened inhibitory activity to the growth of the protozoan, suggesting that loss of the hydroxyl group from their molecules reduces the activity. The compound eupomatenoid-3 showed lower activity than the hexane fraction. Eupomatenoid-5 was significantly more active than benznidazole, the antiparasitic drug of choice for treatment of Chagas' disease. The crude extract, hexane fraction, and eupomatenoid-5 caused no lysis in sheep blood at concentrations which inhibit the growth of epimastigote forms. The compound eupomatenoid-5 showed low cytotoxic effects against Vero cells. These results provide new perspectives on the development of novel drugs obtained from natural products with trypanocidal activity. However, the extracts and active compound isolated from P. regnellii var. pallescens should be further studied in animal models for in vivo efficacy.

  研究了从 Piper regnellii (MIQ.) C. DC. var. pallescens (C. DC.) YUNCK 叶子的乙酸乙酯提取物中纯化的 4 种新木质素对克鲁斯锥虫的体外抗增殖作用。通过紫外光谱、EI-MS、1H-、13C-NMR、H-H COSY、gNOE、HETCOR 和 HMBC 等光谱分析鉴定了这些分离化合物。化合物 eupomatenoid-5、eupomatenoid-6 和 conocarpan 对 T. cruzi 的表皮原虫具有相当高的活性，其 50% 抑制浓度（IC50）分别为 7.0、7.5 和 8.0 μg/ml。甲基化后，这些化合物对原生动物生长的抑制活性减弱，表明其分子中羟基的缺失降低了活性。化合物 eupomatenoid-3 的活性低于正己烷馏分。Eupomatenoid-5 的活性明显高于苯并咪唑，后者是治疗南美锥虫病的首选抗寄生虫药物。粗萃取物、正己烷馏分和 eupomatenoid-5 在绵羊血液中不会造成裂解，其浓度可抑制上皮细胞的生长。化合物 eupomatenoid-5 对 Vero 细胞的细胞毒性较低。这些结果为从具有杀锥虫活性的天然产物中开发新型药物提供了新的视角。然而，从 P. regnellii var. pallescens 中分离出的提取物和活性化合物还需要在动物模型中进一步研究其体内疗效。
• Synthesis of potential allosteric modulators of Hsp90 by chemical glycosylation of Eupomatenoid-6
  作者：Laura Morelli、Anna Bernardi、Sara Sattin

  DOI：10.1016/j.carres.2014.03.006

  日期：2014.5

  Hsp90 (Heat shock protein-90) is a chaperone protein and an established anti-apoptotic target in cancer therapy. Most of the known small-molecule inhibitors that have shown potent antitumor activity target the Hsp90 N-terminal domain and directly inhibit its ATP-ase activity. Many of these molecules display important secondary effects. A different approach to Hsp90 inhibition consists of targeting

  Hsp90（热休克蛋白90）是一种分子伴侣蛋白，是癌症治疗中已确立的抗凋亡靶标。大多数已知的显示出有效抗肿瘤活性的小分子抑制剂都靶向Hsp90 N末端结构域，并直接抑制其ATP酶活性。这些分子中许多都显示出重要的次级作用。抑制Hsp90的另一种方法包括靶向蛋白质C末端结构域（CTD）并通过变构效应调节其伴侣活性。使用原始的计算方法，最近已经确定了CTD中的变构热点可以控制域间通信。通过虚拟筛选和实验筛选相结合，可以鉴定鼠李糖基化苯并呋喃（Eupomatenoid-2）作为进一步开发的线索。在本文中，我们使用2-（4'-羟苯基）苯并呋喃糖苷配基（aka Eupomatenoid-6）的化学糖基化描述了Eupomatenoid-2的糖基化。在碱性条件下，通过糖基溴化物对苯酚进行糖基化，可得到葡萄糖，半乳糖和岩藻糖系列的所需产物。这种方法在manno和rhamno系列中失败了。但是，可以使用O-
• Lignans fromKrameria ixina
  作者：Hans Achenbach、Wolfgang Utz、Alfredo Usubillaga、Henry A. Rodriguez

  DOI：10.1016/0031-9422(91)80103-8

  日期：1991.1

  Abstract From a methylene chloride extract of the roots of Krameria ixina nine new neolignans/ nor -neolignans besides 24-methylenecycloartanol and eight further lignan-type compounds already known from other Krameriaceae were isolated.

  摘要 从 Krameria ixina 根的二氯甲烷提取物中分离出了 9 种新的新木脂素/nor-neolignan，除了 24-亚甲基环木酚素和其他 8 种已知来自其他克拉梅科植物的木脂素类化合物。
• Synthesis of eupomatenoids by three consecutive transition metal-catalyzed cross-coupling reactions
  作者：Thorsten Bach、Marc Bartels

  DOI：10.1016/s0040-4039(02)02287-6

  日期：2002.12

  Six different eupomatenoids (1a-c, 1f-h) were prepared from 2,3,5-tribroinobenzofuran (2) in a concise and high-yielding synthetic sequence. The overall yields vary between 29 and 60% over four to six steps. Key to the success of the syntheses is the high regioselectivity achieved in three Pd(0)- and Ni(0)-catalyzed cross-coupling reactions which were conducted consecutively. The order of substitution at the benzofuran nucleus is C-2, C-5 and C-3. (C) 2002 Elsevier Science Ltd. All rights reserved.