5-ethyl-3-(4-methylphenyl)furan-2(5H)-one

• 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-ethyl-3-(4-methylphenyl)furan-2(5H)-one
• 英文别名: (+/-)-incrustoporine；(RS)-incrustoporin；incrustoporin；2-ethyl-4-(4-methylphenyl)-2H-furan-5-one
• 化学式: C₁₃H₁₄O₂
• 分子量: 202.253
• InChiKey: RFBPKMXSXRYFDL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 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：

  对甲基苯乙酸 在 盐酸 、 lithium hydroxide 、 正丁基锂 、 苯基氯化硒 、 三氟化硼乙醚 、 二异丙胺 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 26.0h， 生成 5-ethyl-3-(4-methylphenyl)furan-2(5H)-one
  参考文献：
  名称：

  Synthesis and structure–antifungal activity Relationships of 3-Aryl-5-alkyl-2,5-dihydrofuran-2-ones and Their Carbanalogues: further refinement of tentative pharmacophore group

  摘要：

  Two series of 3-(substituted phenyl)-5-alkyl-2,5-dihydrofuran-2-ones related to a natural product, (-)incrustoporine, were synthesized and their in vitro antifungal activity evaluated. The compounds with halogen substituents on the phenyl ring exhibited selective antifungal activity against the filamentous strains of Absidia corymbifera and Aspergillus fumigatus. On the other hand, the influence of the lenghth of the alkyl chain at C(5) was marginal. The antifungal effect of the most active compound against the above strains was higher than that of ketoconazole, and close to that of amphotericin B. In order to verify the hypothesis about a possible relationship between the Michael-accepting ability of the compounds and their antifungal activity, a series of simple carbanalogues, 2-(substituted phenyl)cyclopent-2-enones, was prepared and subjected to antifungal activity assay as well. (C) 2003 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0968-0896(03)00220-7

文献信息

• A Cascade Aza-Cope/Aza-Prins Cyclization Leading to Piperidine Derivatives
  作者：Jothi L. Nallasivam、Rodney A. Fernandes

  DOI：10.1002/ejoc.201403607

  日期：2015.3

  The cascade aza-Cope/aza-Prins cyclization of homoallylamines to give substituted piperidines has been explored. The use of glyoxalic acid as the carbonyl component afforded bicyclic structures as a result of the internal carboxylate anion trapping the intermediate cation. The unimolecular bis-, tris-, and tetrakis(homoallylamine)s efficiently delivered the appended bis-, tris- and tetrakis(piperidine-4-ol)s

  已经探索了高烯丙基胺的级联 aza-Cope/aza-Prins 环化以产生取代的哌啶。由于内部羧酸根阴离子捕获中间阳离子，因此使用乙醛酸作为羰基组分提供双环结构。单分子双-、三-和四（高烯丙胺）有效地提供了附加的双-、三-和四（哌啶-4-醇）（分别为三脚架和十字架形状）作为新实体。后一种化合物在 Suzuki-Miyaura 交叉偶联反应中用作合成肠壳孔蛋白的极好配体。
• Chemoselective formal β-functionalization of substituted aliphatic amides enabled by a facile stereoselective oxidation event
  作者：Adriano Bauer、Nuno Maulide

  DOI：10.1039/c9sc03715b

  日期：——

  Aliphatic C-H functionalization is a topic of current intense interest in organic synthesis. Herein, we report that a facile and stereoselective dehydrogenation event enables the functionalization of aliphatic amides at different positions in a one-pot fashion. Derivatives of relevant pharmaceuticals were formally functionalized in the β-position in late-stage manner. A single-step synthesis of incrustoporine

  脂肪族 CH 官能化是当前有机合成中的一个热门话题。在这里，我们报道了一种简单的立体选择性脱氢事件能够以一锅方式在不同位置对脂肪族酰胺进行功能化。相关药物的衍生物以后期方式在β位正式官能化。从简单的前体一步合成 incrustoporine 进一步展示了这种方法的潜在效用。
• Development of Unimolecular Tetrakis(piperidin-4-ol) as a Ligand for Suzuki-Miyaura Cross-Coupling Reactions: Synthesis of Incrustoporin and Preclamol
  作者：Jothi L. Nallasivam、Rodney A. Fernandes

  DOI：10.1002/ejoc.201500353

  日期：2015.6

  cross-coupling reactions under aerobic conditions. Various biaryls, terphenyls, and heterocyclic biphenyls were obtained in good to excellent yields. The ligands were also capable of catalyzing the Heck–Mizoroki reaction. As an application, the Suzuki–Miyaura coupling reaction was used in the synthesis of incrustoporin, its analogs, and the drug molecule preclamol.

  多米诺 aza-Cope/aza-Prins 级联反应合成了一类新的 4-羟基哌啶附加单分子、双、三和四单分子化合物，作为有效配体在有氧条件下催化 Suzuki-Miyaura 交叉偶联反应. 以良好到极好的收率获得了各种联芳基、三联苯和杂环联苯。配体还能够催化 Heck-Mizoroki 反应。作为应用，Suzuki-Miyaura 偶联反应用于合成肠壳孔蛋白、其类似物和药物分子 preclamol。
• Enantioselective synthesis of (R)-incrustoporin, an antibiotic isolated from Incrustoporia carneola
  作者：Renzo Rossi、Fabio Bellina、Matteo Biagetti、Luisa Mannina

  DOI：10.1016/s0957-4166(99)00085-3

  日期：1999.3

  Highly enantiomerically enriched (R)-incrustoporin was enantioselectively synthesized in 43.6% overall yield starting from 4-iodotoluene. The key steps of the synthesis included the asymmetric hydrogenation of 1-(p-tolyl)-1-pentyn-3-one catalyzed by a non-racemic Ru(II) complex and the Pd-catalyzed cyclocarbonylation of so-obtained highly enantiomerically enriched 1-(p-tolyl)-1-pentyn-3-ol. This Pd-catalyzed reaction, whose stereochemical outcome was previously unknown, proceeded with retention of configuration and 2.5% or less racemization. The enantiomeric purities of (R)-1-(p-tolyl)-1-pentyn-3-ol and (R)-incrustoporin were evaluated by HPLC analysis on a Chiralcel OJ column as well as by performing the H-1 NMR spectra of these compounds in a D2O solution which was saturated with alpha- or beta-cyclodextrin, respectively. (C) 1999 Elsevier Science Ltd. All rights reserved.
• Regioselective Pd-catalyzed alkylative lactonizations of 4-hydroxy-2-alkynecarboxylates with organoboronic acids
  作者：Chang Ho Oh、Su Jin Park、Jin Hyang Ryu、Arun Kumar Gupta

  DOI：10.1016/j.tetlet.2004.07.129

  日期：2004.9

  The palladium-catalyzed addition of aryl- and alkenylboronic acids to 4-hydroxy-2-alkynecarboxylates and in situ lactonization would constitute a novel methodology for the synthesis of various butenolides with an excellent stereoselectivity and a high control of regioselectivity. (C) 2004 Published by Elsevier Ltd.