3-氧代-2-(2-亚丙基)丁酸乙酯 | 35044-52-1

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 中文名称: 3-氧代-2-(2-亚丙基)丁酸乙酯
• 英文名称: ethyl 2-acetyl-3-methylbut-2-enoate
• 英文别名: ethyl 3-oxo-2-(2-propylidene)butanoate；2-acetyl-3-methyl-but-2-enoic acid ethyl ester；2-acetyl-3-methyl-crotonic acid ethyl ester；2-Acetyl-3-methyl-crotonsaeure-aethylester；ethyl α-isopropylidene-acetoacetate；ethyl 2-(1-methyl-ethylidene)-3-oxo-butanoate；ethyl isopropylidene acetoacetate
• CAS: 35044-52-1
• 化学式: C₉H₁₄O₃
• 分子量: 170.208
• InChiKey: ZTLXZYVSSQOEMA-UHFFFAOYSA-N

物化性质

• 沸点：
  104-105 °C(Press: 15 Torr)
• 密度：
  0.995±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  12
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.56
• 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-氧代-2-(2-亚丙基)丁酸乙酯 在 吡啶 、 selenium(IV) oxide 作用下， 反应 12.0h， 以31%的产率得到乙基2,4-二甲基-3-糠酸酯
  参考文献：
  名称：

  Isotetronic acids from an oxidative cyclization

  摘要：

  甲基烯酮与二氧化硒氧化反应会引发一系列反应，最终形成异四氢呋喃酸。

  DOI：

  10.1039/c5cc04051e
• 作为产物：
  描述：

  alkaline earth salt of/the/ methylsulfuric acid 生成 3-氧代-2-(2-亚丙基)丁酸乙酯
  参考文献：
  名称：

  Merling; Welde, Justus Liebigs Annalen der Chemie, 1909, vol. 366, p. 140

  摘要：

  DOI：

文献信息

• Probing the Mechanism of Allylic Substitution of Morita–Baylis–Hillman Acetates (MBHAs) by using the Silyl Phosphonite Paradigm: Scope and Applications of a Versatile Transformation
  作者：Maria Kalyva、Alexandros L. Zografos、Era Kapourani、Evaggelos Giambazolias、Laurent Devel、Athanasios Papakyriakou、Vincent Dive、Yannis G. Lazarou、Dimitris Georgiadis

  DOI：10.1002/chem.201405626

  日期：2015.2.16

  using 31P NMR spectroscopy revealed unexpected reactivity differences between ester and nitrile derivatives. These kinetic profiles and DFT calculations support a mechanistic scenario in which observed differences can be explained from the “lateness” of transition states. In addition, we provide experimental evidence suggesting that enolates due to initial P‐Michael addition are not formed. Based on

  AP 甲硅烷基膦酸酯和森田-的Baylis-希尔曼乙酸盐（MBHAs）之间C键形成反应探索作为向医药相关β-carboxyphosphinic结构基序的通用的替代方案。使用31记录的不同取代的MBHA转化为次膦酸9或14的转化率P NMR光谱显示酯和腈衍生物之间的反应性差异出乎意料。这些动力学曲线和DFT计算支持了一种机械方案，其中可以从过渡态的“迟缓”解释观察到的差异。此外，我们提供的实验证据表明，由于最初的P-Michael加成而形成的烯醇不形成。基于拟议的机械情景结合DFT计算，对E / Z的解释提出了酯和腈之间的立体选择性差异。提出了由这种转变产生的合成机会，该机会涉及几种合成的反复变化的膦基结构单元的制备，而这些结构单元通过经典的P-Michael合成路线的访问并不简单。
• [EN] SELECTIVE MODULATORS OF MUTANT LRRK2 PROTEOLYSIS AND ASSOCIATED METHODS OF USE<br/>[FR] MODULATEURS SÉLECTIFS DE LA PROTÉOLYSE DE LA LRRK2 MUTANTE ET MÉTHODES D'UTILISATION ASSOCIÉES
  申请人：ARVINAS OPERATIONS INC

  公开号：WO2021194878A1

  公开（公告）日：2021-09-30

  Bifunctional compounds, which find utility as modulators of non-receptor Leucine-rich repeat kinase 2 (LRRK2), are described herein. In particular, the bifunctional compounds of the present disclosure contain on one end a moiety that binds to the cereblon E3 ubiquitin ligase and on the other end a moiety which binds LRRK2, such that the target protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of target protein. The bifunctional compounds of the present disclosure exhibit a broad range of pharmacological activities associated with degradation/inhibition of target protein. Diseases or disorders that result from aberrant regulation of the target protein are treated or prevented with compounds and compositions of the present disclosure.

  本文描述了作为非受体白氨酸富含重复激酶2（LRRK2）调节剂的双功能化合物。具体来说，本公开的双功能化合物在一端含有结合到 cereblon E3 泛素连接酶的基团，在另一端含有结合到 LRRK2 的基团，使得目标蛋白质靠近泛素连接酶以实现目标蛋白质的降解（和抑制）。本公开的双功能化合物表现出与目标蛋白质的降解/抑制相关的广泛药理活性。由于目标蛋白质异常调节导致的疾病或紊乱可通过本公开的化合物和组合物进行治疗或预防。
• Synthesis of β- and β,β-substituted Morita–Baylis–Hillman adducts using a two-step protocol
  作者：David I. Magee、Same Ratshonka、Jessica McConaghy、Maggie Hood

  DOI：10.1139/v2012-017

  日期：2012.5

  The synthesis of a large number of β- and β,β-substituted keto esters was successful by the use of the Knoevenagel condensation reaction. The stereoselectivity of these reactions was improved by alteration of various substituent groups. Although there were few examples of complete Z selectivity, the use of tert-butyl acetoacetate with either aromatic or aliphatic aldehydes afforded Z selectivity. The selective reductions of these substituted keto esters was successfully achieved by using a combination of NaBH₄ and CeCl₃·7H₂O or Yb(OTf)₃, which allowed a facile synthesis of a large number of stereochemically pure substituted Morita–Baylis–Hillman adducts, including β,β-substituted adducts.

  大量β-和β,β-取代酮酯的合成成功地通过Knoevenagel缩合反应实现。通过改变各种取代基团来改善这些反应的立体选择性。尽管完全Z选择性的例子很少，但是使用叔丁基乙酰乙酸酯与芳香族或脂肪族醛可以获得Z选择性。这些取代酮酯的选择性还原成功地通过使用NaBH₄和CeCl₃·7H₂O或Yb(OTf)₃的组合实现，从而实现了大量立体化纯净的取代Morita–Baylis–Hillman加合物的简便合成，包括β,β-取代加合物。
• Synthetic Studies on Novel 1,4-Dihydro-2-methylthio-4,4,6-trisubstituted Pyrimidine-5-carboxylic Acid Esters and Their Tautomers
  作者：Yoshio Nishimura、Yasuko Okamoto、Masaya Ikunaka、Yoshihiko Ohyama

  DOI：10.1248/cpb.59.1458

  日期：——

  at various temperatures and nuclear Overhauser enhancement spectroscopy (NOESY) experiment. Because these dihydropyrimidine products are otherwise inaccessible and thus hitherto unavailable, the synthetic methods established in this study will help to expand the molecular diversity of their related derivatives.

  1,4-二氢-2-甲硫基烷基-4,4,6-三取代嘧啶-5-羧酸烷基酯1及其互变异构体烷基1,6-二氢-2-甲硫基-4,6,6-三取代烷基的混合物嘧啶-5-羧酸盐2是通过S-甲基异硫脲半硫酸盐3与2-（gem-di取代）亚甲基-3-氧酸酯4的Atwal-Biginelli环缩合反应合成的，可以通过Lehnert程序进行萃取，以进行Knoevenagel型缩合。彼此不可分离的Atwal-Biginelli环缩合反应的互变异构产物1和2的结构通过（1）在不同温度下的1 H-NMR光谱和核Overhauser增强光谱（NOESY）实验明确确定。由于这些二氢嘧啶产品否则无法获得，因此迄今无法获得，
• SUBSTITUTED 3-PHENYLPROPIONIC ACIDS AND THE USE THEREOF
  申请人：LAMPE Thomas

  公开号：US20110130445A1

  公开（公告）日：2011-06-02

  The present application relates to novel 3-phenylpropionic acid derivatives, to processes for their preparation, to their use for the treatment and/or prevention of diseases and to their use for preparing medicaments for the treatment and/or prevention of diseases, in particular for the treatment and/or prevention of cardiovascular disorders.

  本申请涉及新颖的3-苯丙酸衍生物，其制备方法，它们用于治疗和/或预防疾病的用途，以及它们用于制备治疗和/或预防疾病的药物的用途，特别是用于治疗和/或预防心血管疾病。

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