tert-butyl 2-oxo-5-phenylpentanoate

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: tert-butyl 2-oxo-5-phenylpentanoate
• 化学式: C₁₅H₂₀O₃
• 分子量: 248.322
• InChiKey: MQMCOGNUHQFZBA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  18
• 可旋转键数：
  7
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.47
• 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：

  tert-butyl 2-oxo-5-phenylpentanoate 在 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 以100%的产率得到2-氧代-5-苯基戊酸
  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：

  2-氧代-5-苯基戊酸乙酯 在 吡啶 、 草酰氯 、 水 、 N,N-二甲基甲酰胺 、 sodium hydroxide 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 反应 48.0h， 生成 tert-butyl 2-oxo-5-phenylpentanoate
  参考文献：
  名称：

  α-酮酯烯醇化物和腈氧化物的催化对映选择性 [3 + 2] 环加成

  摘要：

  已开发出腈氧化物与瞬时生成的 α-酮酯烯醇化物之间的对映选择性 [3 + 2] 环加成反应。发现该催化剂体系与原位氧化腈生成条件相容。一系列多功能的腈氧化物和 α-酮酯可以参与环加成，以高化学产率提供新型 5-羟基-2-异恶唑啉，具有高水平的非对映选择性和对映选择性。值得注意的是，最佳反应条件避免了通过 O-亚氨酰化和杂 [3 + 2] 途径的并发反应。

  DOI：

  10.1021/jacs.7b03782

文献信息

• Hydrogen-Bond-Assisted Sequential Reaction of Silyl Glyoxylates: Stereoselective Synthesis of Silyl Enol Ethers
  作者：Chen Zhu、Man-Yi Han、Xiu-Xia Liang、Bin Guan、Pinhua Li、Lei Wang

  DOI：10.1021/acs.orglett.0c03683

  日期：2021.1.1

  A novel hydrogen-bond-assisted sequential reaction of silyl glyoxylates is described. This method provides an efficient strategy for the synthesis of silyl enol ethers with high selectivity. In these transformations, hydrogen bonds from 2-nitroethanol and its derivatives are critical to the stereochemical outcome. Both E- and Z-isomers are achieved via Henry reaction/Brook rearrangement/elimination

  描述了一种新型的氢键辅助的乙醛酸甲硅烷基酯的顺序反应。该方法为合成高选择性的甲硅烷基烯醇醚提供了有效的策略。在这些转化中，2-硝基乙醇及其衍生物的氢键对于立体化学结果至关重要。既ë -和ž 1： -异构体通过Henry反应/重排布鲁克/消除和亨利反应/重排布鲁克/复古亨利反应/消除过程，分别为（最多99实现Ž -选择性，和9.2：1 È -选择性）。
• Asymmetric Synthesis of Diverse Glycolic Acid Scaffolds via Dynamic Kinetic Resolution of α-Keto Esters
  作者：Kimberly M. Steward、Michael T. Corbett、C. Guy Goodman、Jeffrey S. Johnson

  DOI：10.1021/ja3102709

  日期：2012.12.12

  The dynamic kinetic resolution of α-keto esters via asymmetric transfer hydrogenation has been developed as a technique for the highly stereoselective construction of structurally diverse β-substituted-α-hydroxy carboxylic acid derivatives. Through the development of a privileged m-terphenylsulfonamide for (arene)RuCl(monosulfonamide) complexes with a high affinity for selective α-keto ester reduction

  通过不对称转移氢化进行α-酮酯的动态动力学拆分已被开发为一种用于高度立体选择性构建结构多样的β-取代-α-羟基羧酸衍生物的技术。通过开发用于（芳烃）RuCl（单磺酰胺）配合物的特殊间三联苯磺酰胺，对选择性 α-酮酯还原具有高亲和力，可以在 β- 还原过程中实现优异水平的化学、非对映和对映控制。芳基-和β-氯-α-酮酯。
• 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。