tert-butyl 2-oxo-4-(4-fluorophenyl)butyrate | 1380498-85-0

• 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: tert-butyl 2-oxo-4-(4-fluorophenyl)butyrate
• 英文别名: tert-butyl 4-(4-fluorophenyl)-2-oxobutanoate
• CAS: 1380498-85-0
• 化学式: C₁₄H₁₇FO₃
• 分子量: 252.286
• InChiKey: LTSHVXSDMOYHKW-UHFFFAOYSA-N

物化性质

• 沸点：
  337.9±25.0 °C(Predicted)
• 密度：
  1.115±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.67
• 重原子数：
  18.0
• 可旋转键数：
  4.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  43.37
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  tert-butyl 2-oxo-4-(4-fluorophenyl)butyrate 在 6-chloro-3-((dimethylamino)(dimethyliminio)methyl)-1H-benzo[d][1,2,3]triazol-3-ium-1-olatehexafluorophosphate(V) 、 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 二氯甲烷 、 N,N-二甲基甲酰胺 为溶剂， 生成 4-(4-fluorophenyl)-2-oxo-N-phenethylbutanamide
  参考文献：
  名称：

  Structure–Activity Relationship Studies of α-Ketoamides as Inhibitors of the Phospholipase A and Acyltransferase Enzyme Family

  摘要：

  The phospholipase A and acyltransferase (PLAAT) family of cysteine hydrolases consists of five members, which are involved in the Ca2+-independent production of N-acylphosphatidylethanolamines (NAPEs). NAPEs are lipid precursors for bioactive N-acylethanolamines (NAEs) that are involved in various physiological processes such as food intake, pain, inflammation, stress, and anxiety. Recently, we identified alpha-ketoamides as the first pan-active PLAAT inhibitor scaffold that reduced arachidonic acid levels in PLAAT3-overexpressing U2OS cells and in HepG2 cells. Here, we report the structure-activity relationships of the alpha-ketoamide series using activity-based protein profiling. This led to the identification of LEI-301, a nanomolar potent inhibitor for the PLAAT family members. LEI-301 reduced the NAE levels, including anandamide, in cells overexpressing PLAAT2 or PLAAT5. Collectively, LEI-301 may help to dissect the physiological role of the PLAATs.

  DOI：

  10.1021/acs.jmedchem.0c00522
• 作为产物：
  描述：

  4-氟溴乙基苯 在 碘 、 magnesium 作用下， 以 乙醚 为溶剂， 反应 3.0h， 生成 tert-butyl 2-oxo-4-(4-fluorophenyl)butyrate
  参考文献：
  名称：

  Structure–Activity Relationship Studies of α-Ketoamides as Inhibitors of the Phospholipase A and Acyltransferase Enzyme Family

  摘要：

  The phospholipase A and acyltransferase (PLAAT) family of cysteine hydrolases consists of five members, which are involved in the Ca2+-independent production of N-acylphosphatidylethanolamines (NAPEs). NAPEs are lipid precursors for bioactive N-acylethanolamines (NAEs) that are involved in various physiological processes such as food intake, pain, inflammation, stress, and anxiety. Recently, we identified alpha-ketoamides as the first pan-active PLAAT inhibitor scaffold that reduced arachidonic acid levels in PLAAT3-overexpressing U2OS cells and in HepG2 cells. Here, we report the structure-activity relationships of the alpha-ketoamide series using activity-based protein profiling. This led to the identification of LEI-301, a nanomolar potent inhibitor for the PLAAT family members. LEI-301 reduced the NAE levels, including anandamide, in cells overexpressing PLAAT2 or PLAAT5. Collectively, LEI-301 may help to dissect the physiological role of the PLAATs.

  DOI：

  10.1021/acs.jmedchem.0c00522

文献信息

• Dynamics in Catalytic Asymmetric Diastereoconvergent (3 + 2) Cycloadditions with Isomerizable Nitrones and α-Keto Ester Enolates
  作者：Tetsuya Ezawa、Yoshihiro Sohtome、Daisuke Hashizume、Masaya Adachi、Mai Akakabe、Hiroyuki Koshino、Mikiko Sodeoka

  DOI：10.1021/jacs.1c02833

  日期：2021.6.23

  Reaction design in asymmetric catalysis has traditionally been predicated on a structurally robust scaffold in both substrates and catalysts, to reduce the number of possible diastereomeric transition states. Herein, we present the stereochemical dynamics in the Ni(II)-catalyzed diastereoconvergent (3 + 2) cycloadditions of isomerizable nitrile-conjugated nitrones with α-keto ester enolates. Even in

  传统上，不对称催化中的反应设计基于底物和催化剂中结构坚固的支架，以减少可能的非对映异构过渡态的数量。在此，我们展示了 Ni(II) 催化的非对映会聚 (3 + 2) 环加成反应中的可异构化腈共轭硝酮与 α-酮酯烯醇化物的立体化学动力学。即使在存在多个平衡物种的情况下，催化协议也显示出广泛的底物范围，以访问一系列带有相邻立体中心的含 CN 构建块，具有高对映选择性和非对映选择性。我们的计算研究表明，在去质子化过程中形成 ( Z )-Ni-烯醇化物的过程中控制了对映选择性，而独特的合成 添加主要由硝酮和配体之间的弱非共价键相互作用控制。
• Asymmetric Organocatalytic Michael/Michael/Henry Sequence to Construct Cyclohexanes with Six Vicinal Stereogenic Centers
  作者：Xiaohua Liu、Yushuang Chen、Weiwei Luo、Lili Lin、Xiaoming Feng

  DOI：10.1055/s-0036-1588940

  日期：——

  efficient, asymmetric, catalytic, triple-cascade reaction between α-keto esters and nitroalkenes to construct cyclohexanes with six vicinal stereogenic centers in good yields and with high enantioselectivities has been established. A bifunctional guanidine–amide organocatalyst proved to be useful for the Michael/Michael/Henry sequence through Bronsted base and hydrogen-bonding cooperative catalysis.

  已经建立了一种有效的、不对称的、催化的、α-酮酯和硝基烯烃之间的三重级联反应，以高产率和高对映选择性构建具有六个邻位立体中心的环己烷。双功能胍-酰胺有机催化剂通过布朗斯台德碱和氢键协同催化被证明可用于迈克尔/迈克尔/亨利序列。
• Catalytic Asymmetric Mono-Fluorination of α-Keto Esters: Synthesis of Optically Active β-Fluoro-α-Hydroxy and β-Fluoro-α-Amino Acid Derivatives
  作者：Shoko Suzuki、Yuki Kitamura、Sylvain Lectard、Yoshitaka Hamashima、Mikiko Sodeoka

  DOI：10.1002/anie.201201303

  日期：2012.5.7

  Enantioselective mono‐fluorination of α‐keto esters was achieved using a mildly basic palladium μ‐hydroxo complex as catalyst. Subsequent one‐pot reduction afforded optically active β‐fluoro‐α‐hydroxy esters. These compounds were then converted into β‐fluoro‐α‐amino esters, which are potentially useful in medicinal chemistry research.

  α-酮酸酯的对映选择性单氟化是通过使用温和碱性的钯μ-羟基络合物作为催化剂来实现的。随后的一锅还原得到旋光的β-氟-α-羟基酯。然后将这些化合物转化为β-氟-α-氨基酯，这可能在药物化学研究中有用。
• Water enables an asymmetric cross reaction of α-keto acids with α-keto esters for the synthesis of quaternary isotetronic acids
  作者：Ping Chen、Kai Wang、Boyu Zhang、Wengang Guo、Yan Liu、Can Li

  DOI：10.1039/c9cc06356k

  日期：——

  A water promoted asymmetric aldol/lactonization/enolization cascade reaction of α-keto acids and α-keto esters was developed, affording the first general protocol for the construction of chiral quaternary isotetronic acids with excellent enantioselectivity. Theoretical results indicate that intramolecular ionized enamine intermediates stabilized by water generate zwitterionic transition states in a

  开发了水促进的α-酮酸和α-酮酯的不对称羟醛/内酯化/烯醇化级联反应，为构造手性季戊四烯异四酸具有良好的对映选择性提供了第一个通用方案。理论结果表明，用水稳定的分子内离子化烯胺中间体在较低的活化能和较高的面部选择性下产生两性离子过渡态，从而导致较高的活性以及化学和对映体选择性。
• The effect of benzyl amine on the efficiency of the base-catalyzed transamination of α-keto esters
  作者：Fazhen Xue、Xiao Xiao、Haining Wang、Yian Shi

  DOI：10.1016/j.tet.2012.06.023

  日期：2012.8

  This paper describes the effect of benzyl amine on the base-catalyzed transamination of alpha-keto esters. Among various benzyl amines examined, o-HOC6H4CH2NH2 was found to be highly effective for the reaction, affording a wide variety of alpha-amino esters in good yields. The o-OH group of the benzyl amine facilitates the transamination process likely via H-bond. Moderate enantiomeric excess was obtained for alpha-amino ester when a quinine derived catalyst was used. (C) 2012 Elsevier Ltd. All rights reserved.