5-(4-bromophenyl)-3-methylene-dihydrofuran-2(3H)-one | 68387-06-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 5-(4-bromophenyl)-3-methylene-dihydrofuran-2(3H)-one
• 英文别名: 5-(4-bromophenyl)-3-methylenedihydrofuran-2(3H)-one；5-(4-bromo-phenyl)-3-methylene-dihydro-furan-2-one；4-(4-bromophenyl)-2-methylenebutyrolactone；α-Methylen-γ-(4-bromphenyl)-γ-butyrolacton；5-(4-Bromophenyl)-3-methylideneoxolan-2-one
• CAS: 68387-06-4
• 化学式: C₁₁H₉BrO₂
• 分子量: 253.095
• InChiKey: KVOZKDNVJZVESM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  在 盐酸 作用下， 以 水 为溶剂， 生成 5-(4-bromophenyl)-3-methylene-dihydrofuran-2(3H)-one
  参考文献：
  名称：

  New antifungal scaffold derived from a natural pharmacophore: Synthesis of α-methylene-γ-butyrolactone derivatives and their antifungal activity against Colletotrichum lagenarium

  摘要：

  Thirty new and thirty-four known analogues were designed and synthesized to improve the potential use of the alpha-methylene-gamma-butyrolactone ring, a natural pharmacophore. All structures were confirmed by H-1 and C-13 NMR, MS, and single-crystal X-ray diffraction analyses. The results of antifungal and cytotoxic activity indicated that the synthesized analogues showed significant inhibitory activity and limited selectivity. Compound 45 exhibited the highest antifungal activity with IC50 = 22.8 mu M but moderate cytotoxic activity with IC50 = 28.5 mu M (against BGC823 cell line) and 7.7 mu M (against HeLa cell line). Analysis of structure-activity relationships revealed that the incorporation of an aromatic ring into the beta, gamma positions of the lactone ring improved antifungal activity, and that the introduction of electron-withdrawing groups into the aromatic rings increased the activity compared with electron-donating groups. The above results identified 4-phenyl-3-phenyl-2-methylenebutyrolactone (33) as a lead scaffold for discovering and developing novel and improved crop-protection agents. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmcl.2013.05.073

文献信息

• Fluorous tagging: an enabling isolation technique for indium-mediated allylation reactions in water
  作者：Carolyn S. Reid、Yuhua Zhang、Chao-Jun Li

  DOI：10.1039/b713244c

  日期：——

  An efficient method was developed to allylate aldehydes using an aqueous indium-mediated allylation reaction with fluorous-tagged allyl halides, and to directly purify the products by fluorous solid phase extraction (F-SPE).

  开发了一种高效的方法，通过使用含氟标记的烯丙基卤化物进行水相铟介导的烯丙基化反应来烯丙基化醛，并通过含氟固相萃取（F-SPE）直接纯化产物。
• Synthesis of (<i>E</i>)- and (<i>Z</i>)-α-Alkylidene-γ-aryl-γ-butyrolactones via Alkenylalumination of Oxiranes
  作者：P. Veeraraghavan Ramachandran、Garrett Garner、Debarshi Pratihar

  DOI：10.1021/ol702079f

  日期：2007.11.1

  presence of BF(3).Et(2)O, affords the corresponding (Z)-alpha-alkylidene-gamma-aryl-gamma-hydroxy esters in 81-100% Z-selectivity. Chromatographic separation of isomers, followed by lactonization with trifluoroacetic acid, provides isomerically pure (Z)-alpha-alkylidene-gamma-aryl-gamma-butyrolactones in 53-78% overall yield. Isomerization of the (Z)-alkylidene hydroxyl esters using LDA, followed by

  在BF（3）.Et（2）O存在下，用[α-（乙氧基羰基）链烯基]二异丁基铝对取代的苯乙烯氧化物进行烯基铝化，得到相应的（Z）-α-亚烷基-γ-芳基-γ-羟基酯Z选择性达到81-100％。色谱分离异构体，然后用三氟乙酸内酯化，以53-78％的总收率提供异构纯的（Z）-α-亚烷基-γ-芳基-γ-丁内酯。使用LDA对（Z）-亚烷基羟基酯进行异构化，然后使用庞大的质子源（例如BHT）进行质子化，提供了一条简单的途径，可以将相应的α-（E）-亚烷基-γ-苯基-γ-羟基酯产率为72-78％，将其环化以得到产率为78-85％的相应的（E）-丁内酯。
• Synthesis and cytotoxic activity of γ-aryl substituted α-alkylidene-γ-lactones and α-alkylidene-γ-lactams
  作者：Anna Albrecht、Jacek F. Koszuk、Jakub Modranka、Marek Różalski、Urszula Krajewska、Anna Janecka、Kazimierz Studzian、Tomasz Janecki

  DOI：10.1016/j.bmc.2008.03.035

  日期：2008.5

  A series of 5-aryl-3-alkylidenedihydrofuran-2(3H)-ones 6a-g'' and 11a,b as well as 5-aryl-3-methylidenepyrrolidin-2-ones 10a-c and 12 were synthesized starting from 4-aryl-2-diethoxyphosphoryl-4-oxobutanoates 3a-g. Reaction sequence includes reduction or reductive amination of the carbonyl group, lactonization or lactamization step and finally the Horner-Wadsworth-Emmons olefination of aldehydes using

  从4开始合成了一系列5-芳基-3-亚烷基二烯基二氢呋喃-2（3H）-酮6a-g''和11a，b以及5-芳基-3-亚甲基亚吡咯烷酮-2-酮10a-c和12。 -芳基-2-二乙氧基磷酰基-4-氧代丁酸酯3a-g。反应顺序包括羰基的还原或还原胺化，内酯化或内酰胺化步骤，最后使用由此获得的5-芳基-3-二乙氧基磷酰基-3,4-二氢呋喃-2（5H）-进行醛的霍纳-沃兹沃思-埃蒙斯烯化反应。 5a-g''或5-芳基-3-二乙氧基磷酰基吡咯烷二-2-酮9a-c。在体外评估了呋喃酮6和11以及吡咯烷酮10和12对小鼠白血病细胞系L-1210和两种人白血病细胞系HL-60和NALM-6的抗性。事实证明，所获得的几种呋喃酮对所有三种细胞系的IC（50）值均低于6 microM都非常有效。