(S)-ethyl 4,4-dimethyl-3-phenylpentanoate | 1286204-33-8

• 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: (S)-ethyl 4,4-dimethyl-3-phenylpentanoate
• 英文别名: ethyl 4,4-dimethyl-3-phenylpentanoate；ethyl (3S)-4,4-dimethyl-3-phenylpentanoate
• CAS: 1286204-33-8
• 化学式: C₁₅H₂₂O₂
• 分子量: 234.338
• InChiKey: QETKSZHQDORQGW-CYBMUJFWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  17
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.53
• 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：

  肉桂酸 在 氯化亚砜 、 immobilized Candida antarctica Lipase B 、 水 、 三乙胺 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 反应 30.0h， 生成 (R)-ethyl 4,4-dimethyl-3-phenylpentanoate 、 (S)-ethyl 4,4-dimethyl-3-phenylpentanoate 、 (S)-4,4-dimethyl-3-phenylpentanoic acid
  参考文献：
  名称：

  Lipase catalysed kinetic resolutions of 3-aryl alkanoic acids

  摘要：

  Hydrolase catalysed kinetic resolutions leading to a series of 3-aryl alkanoic acids (>= 94% ee) are described. Hydrolysis of the ethyl esters with a series of hydrolases was undertaken to identify biocatalysts that yield the corresponding acids with excellent enantiopurity in each case. Steric and electronic effects on the efficiency and enantioselectivity of the biocatalytic transformation were also explored. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2010.12.019

文献信息

• Identification of an Esterase Isolated Using Metagenomic Technology which Displays an Unusual Substrate Scope and its Characterisation as an Enantioselective Biocatalyst
  作者：Declan P. Gavin、Edel J. Murphy、Aoife M. Foley、Ignacio Abreu Castilla、F. Jerry Reen、David F. Woods、Stuart G. Collins、Fergal O'Gara、Anita R. Maguire

  DOI：10.1002/adsc.201801691

  日期：2019.6.6

  Evaluation of an esterase annotated as 26D isolated from a marine metagenomic library is described. Esterase 26D was found to have a unique substrate scope, including synthetic transformations which could not be readily effected in a synthetically useful manner using commercially available enzymes. Esterase 26D was more selective towards substrates which had larger, more sterically demanding substituents

  描述了评估从海洋宏基因组库中分离为26D的酯酶的方法。发现酯酶26D具有独特的底物范围，包括使用市售酶不易以合成有用的方式实现的合成转化。酯酶26D是更具选择性的朝向具有较大的，更空间要求的取代基的底物（即，异-丙基或叔-丁基基团）上的β碳，这是相对于其中显示的偏好基板与空间位先前测试的市售的酶β-碳原子上的取代基（例如甲基）要求较低。
• Influence of the position of the substituent on the efficiency of lipase-mediated resolutions of 3-aryl alkanoic acids
  作者：Rebecca E. Deasy、Thomas S. Moody、Anita R. Maguire

  DOI：10.1016/j.tetasy.2013.09.019

  日期：2013.12

  prepared in 96% ee by Pseudomonas fluorescens catalysed ester hydrolysis, while, Candida antarctica lipase B (immob) resolved the α-ethyl substituted 3-arylalkanoic acid (R)-1b in 82% ee. The influence of the position of the substituent relative to the ester site on the efficiency and enantioselectivity of the biotransformation is also explored; the same lipases were found to resolve both the α- and β-substituted

  描述了水解酶催化的动力学拆分，以提供对映体富集的α-取代的3-芳基链烷酸。（小号）-2-甲基-3-苯基丙酸（小号） - 1A是通过在96％ee的制备荧光假单胞菌催化酯水解，同时，南极假丝酵母脂肪酶B（immob）解决了α -乙基取代的3-芳基链烷酸（R）-1b在82％ee中。还探讨了取代基相对于酯位的位置对生物转化效率和对映选择性的影响。发现相同的脂肪酶可分解α-和β-取代的链烷酸。此外，讨论了相对于其C3取代的对应物，C2立体发生中心的取代基的空间效率和立体选择性。