3-(4-乙基-苯基)-3-氧代-丙酸乙酯 | 51725-80-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 3-(4-乙基-苯基)-3-氧代-丙酸乙酯
• 英文名称: ethyl 3-(4-ethylphenyl)-3-oxopropanoate
• 英文别名: Ethyl (4-ethylbenzoyl)acetate
• CAS: 51725-80-5
• 化学式: C₁₃H₁₆O₃
• 分子量: 220.268
• InChiKey: ACGRWZIBEZTWFS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  16
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  3-(4-乙基-苯基)-3-氧代-丙酸乙酯 在 RaNi potassium tert-butylate 、 氢气 作用下， 以 四氢呋喃 、 乙酸乙酯 为溶剂， 20.0 ℃ 、413.7 kPa 条件下， 反应 31.5h， 生成 ethyl (2R,3S,4S)-4-(2,3-dihydro-1-benzofuran-5-yl)-2-(4-ethylphenyl)pyrrolidine-3-carboxylate
  参考文献：
  名称：

  Pyrrolidine-3-carboxylic Acids as Endothelin Antagonists. 5. Highly Selective, Potent, and Orally Active ET_A Antagonists

  摘要：

  The synthesis and structure-activity relationships (SAR) of a series of pyrrolidine-3-carboxylic acids as endothelin antagonists are described. The data shows an increase in selectivity when the methoxy of Atrasentan (ABT-627) is replaced with methyl, and the benzodioxole is replaced with dihydrobenzofuran. Adding a fluorine further increases the binding activity and provides a metabolically stable and orally bioavailable ETA-selective antagonist.

  DOI：

  10.1021/jm010237l
• 作为产物：
  描述：

  对乙基苯甲酸 在 三乙胺 、 magnesium chloride 作用下， 以 四氢呋喃 为溶剂， 反应 6.0h， 生成 3-(4-乙基-苯基)-3-氧代-丙酸乙酯
  参考文献：
  名称：

  Synthesis of Dithiolethiones and Identification of Potential Neuroprotective Agents via Activation of Nrf2-Driven Antioxidant Enzymes

  摘要：

  Oxidative stress is implicated in the pathogenesis of a wide variety of neurodegenerative disorders, and accordingly, dietary supplement of exogenous antioxidants or/and upregulation of the endogenous antioxidant defense system are promising for therapeutic intervention or chemoprevention of neurodegenerative diseases. Nrf2, a master regulator of the cellular antioxidant machinery, cardinally participates in the transcription of cytoprotective genes against oxidative/electrophilic stresses. Herein, we report the synthesis of 59 structurally diverse dithiolethiones and evaluation of their neuroprotection against 6-hydroxydopamine- or H2O2 -induced oxidative damages in PC12 cells, a neuron-like rat pheochromocytoma cell line. Initial screening identified compounds 10 and 11 having low cytotoxicity but conferring remarkable protection on PC12 cells from oxidative-mediated damages. Further studies demonstrated that both compounds upregulated a battery of antioxidant genes as well as corresponding genes' products. Significantly, silence of Nrf2 expression abolishes cytoprotection of 10 and 11, indicating targeting Nrf2 activation is pivotal for their cellular functions. Taken together, the two lead compounds discovered here with potent neuroprotective functions against oxidative stress via Nrf2 activation merit further development as therapeutic or chemopreventive candidates for neurodegenerative disorders.

  DOI：

  10.1021/acs.jafc.9b06360

文献信息

• Modular Tuning of Electrophilic Reactivity of Iridium Nitrenoids for the Intermolecular Selective α-Amidation of β-Keto Esters
  作者：Minhan Lee、Hoimin Jung、Dongwook Kim、Jung-Woo Park、Sukbok Chang

  DOI：10.1021/jacs.0c04344

  日期：2020.7.15

  herein an Ir-catalyzed intermolecular amino group transfer to β-keto esters (amides) to access α-aminocarbonyl products with excellent chemoselectivity. The key strategy was to engineer electrophilicity of the putative Ir-nitrenoids by tuning electronic property of the κ2-N,O chelating ligands, thus facilitating nucleophilic addition of enol π-bonds of 1,3-dicarbonyl substrates.

  我们在此报告了 Ir 催化的分子间氨基转移到 β-酮酯（酰胺）以获取具有优异化学选择性的 α-氨基羰基产物。关键策略是通过调节 κ2-N,O 螯合配体的电子特性来设计假定的 Ir-nitrenoids 的亲电性，从而促进 1,3-二羰基底物的烯醇 π 键的亲核加成。
• Inhibitors of glycogen synthase kinase 3
  申请人：——

  公开号：US20020156087A1

  公开（公告）日：2002-10-24

  New pyrimidine or pyridine based compounds, compositions and methods of inhibiting the activity of glycogen synthase kinase (GSK3) in vitro and of treatment of GSK3 mediated disorders in vivo are provided. The methods, compounds and compositions of the invention may be employed alone, or in combination with other pharmacologically active agents in the treatment of disorders mediated by GSK3 activity, such as diabetes, Alzheimer's disease and other neurodegenerative disorders, obesity, atherosclerotic cardiovascular disease, essential hypertension, polycystic ovary syndrome, syndrome X, ischemia, traumatic brain injury, bipolar disorder, immunodeficiency or cancer.

  提供新的基于嘧啶或吡啶的化合物、组合物以及抑制糖原合酶激酶（GSK3）活性的方法和治疗GSK3介导的体内疾病的方法。发明的方法、化合物和组合物可以单独使用，或者与其他药理活性物质结合使用，在治疗由GSK3活性介导的疾病中，如糖尿病、阿尔茨海默病和其他神经退行性疾病、肥胖、动脉粥样硬化性心血管疾病、原发性高血压、多囊卵巢综合征、X综合征、缺血、创伤性脑损伤、双相情感障碍、免疫缺陷或癌症。
• A One-Pot Copper(II)-Catalyzed Tandem Synthesis of 2-Substituted Pyrrolo[1,2-<i>b</i>]pyridazin-4(1<i>H</i>)-ones
  作者：Cun Tan、Haoyue Xiang、Qian He、Chunhao Yang

  DOI：10.1002/ejoc.201500422

  日期：2015.6

  A one-pot copper(II)-catalyzed tandem synthesis of 2-substituted pyrrolo[1,2-b]pyridazin-4(1H)-ones from N-aminopyrroles was developed. This tandem reaction involves a Conrad–Limpach-type reaction, including the thermal condensation of N-aminopyrroles with the carbonyl group of β-oxo esters followed by the cyclization of Schiff base intermediates. Compared to the traditional Conrad–Limpach quinoline

  开发了一种一锅铜 (II) 催化串联合成 2-取代的吡咯并 [1,2-b] 哒嗪-4(1H)-酮从 N-氨基吡咯。这种串联反应涉及 Conrad-Limpach 型反应，包括 N-氨基吡咯与 β-氧代酯的羰基的热缩合，然后是席夫碱中间体的环化。与传统的 Conrad-Limpach 喹啉合成相比，我们在此首次成功地将铜 (II) 作为催化剂应用于该转化中，以提供 2-取代的吡咯并[1,2-b]哒嗪-4(1H)-酮。大多数带有给电子 (EDG) 和吸电子 (EWG) 基团的基材都适用于该程序。相应的产品可以直接转化为多种吡咯并[1,2-b]哒嗪用于药物发现和材料科学。
• Synthesis of Thiazoles and Isothiazoles via Three-Component Reaction of Enaminoesters, Sulfur, and Bromodifluoroacetamides/Esters
  作者：Xingxing Ma、Xiaoxia Yu、Hua Huang、Yao Zhou、Qiuling Song

  DOI：10.1021/acs.orglett.0c01275

  日期：2020.7.17

  three-component strategy for the synthesis of thiazoles and isothiazoles has been developed by employing enaminoesters, fluorodibromoiamides/ester, and sulfur. The thiazoles and isothiazoles were formed via two C–F bond cleavages along with the formation of new C–S, C–N, and N–S bonds. The strategy provides high selectivity for the synthesis of thiazoles/isothiazoles, which have vital applications in

  通过使用烯氨基酯，氟代二溴代酰胺/酯和硫，已经开发了用于合成噻唑和异噻唑的三组分策略。噻唑和异噻唑是通过两次C–F键断裂以及新的C–S，C–N和N–S键的形成而形成的。该策略为噻唑/异噻唑的合成提供了高选择性，噻唑/异噻唑在药物发现和开发中具有至关重要的应用。
• Construction of isoxazolone-fused phenanthridines <i>via</i> Rh-catalyzed cascade C–H activation/cyclization of 3-arylisoxazolones with cyclic 2-diazo-1,3-diketones
  作者：Wangcheng Hu、Xinwei He、Tongtong Zhou、Youpeng Zuo、Shiwen Zhang、Tingting Yang、Yongjia Shang

  DOI：10.1039/d0ob02310h

  日期：——

  A Rh(III)-catalyzed cascade C–H activation/intramolecular cyclization of 3-aryl-5-isoxazolones with cyclic 2-diazo-1,3-diketones was described, leading to the formation of isoxazolo[2,3-f]phenanthridine skeletons. The protocol features the simultaneous one-pot formation of two new C–C/C–N bonds and one heterocycle in moderate-to-good yields with good functional group compatibility. It is amenable to

  描述了Rh（III）催化的3-芳基-5-异恶唑酮与环2-重氮-1,3-二酮的级联C–H活化/分子内环化，导致异恶唑[2,3- f ]的形成菲啶骨架。该协议的特征是同时一锅形成两个新的C–C / C–N键和一个杂环，具有中等至良好的产率，并具有良好的官能团相容性。适于大规模合成和进一步转化。