(S)-2-bromobutyric acid methyl ester | 114438-76-5

• 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: (S)-2-bromobutyric acid methyl ester
• 英文别名: methyl (S)-2-bromobutanoate；(S)-methyl 2-bromobutyrate；methyl (S)-2-bromobutyrate；methyl (2S)-2-bromobutanoate
• CAS: 114438-76-5
• 化学式: C₅H₉BrO₂
• 分子量: 181.029
• InChiKey: UFQQDNMQADCHGH-BYPYZUCNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  8
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-[[3-(4-chlorobenzoyl)-2-methyl-6-(trifluoromethoxy)-1H-indol-1-yl]methyl]phenol 、 (S)-2-bromobutyric acid methyl ester 在 caesium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 生成 methyl (2R)-2-(3-{[3-(4-chlorobenzoyl)-2-methyl-6-(trifluoromethoxy)-1H-indol-1-yl]methyl}phenoxy)butanoate 、 methyl (2S)-2-(3-{[3-(4-chlorobenzoyl)-2-methyl-6-(trifluoromethoxy)-1H-indol-1-yl]methyl}phenoxy)butanoate
  参考文献：
  名称：

  Discovery of a Peroxisome Proliferator Activated Receptor γ (PPARγ) Modulator with Balanced PPARα Activity for the Treatment of Type 2 Diabetes and Dyslipidemia

  摘要：

  A series of 3-acylindole-1-benzylcarboxylic acids were designed and synthesized while searching for a PPAR gamma modulator with additional moderate intrinsic PPAR alpha agonistic activity. 2-[3-[[3-(4-Chlorobenzoyl)-2-methyl-6-(trifluoromethoxy)-1H-indol-1-yl]methyl]phenoxy]-(2R)-butanoic acid (12d) was identified as such an agent which demonstrated potent efficacy in lowering both glucose and lipids in multiple animal models with significantly attenuated side effects such as fluid retention and heart weight gain associated with PPAR gamma full agonists, The moderate PPAR alpha activity of 12d not only contributed to the agent's ability to manage lipid profiles but also appears to have potentiated its PPAR gamma efficacy in lowering glucose levels in preclinical diabetic animal models.

  DOI：

  10.1021/jm900367w
• 作为产物：
  描述：

  巴豆酸甲酯 在 葡萄糖 、 enoate reductase old yellow enzyme 1 、 GDH from B_. megaterium 、 溴 、 nicotinamide adenine dinucleotide phosphate 作用下， 以 正庚烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 27.0h， 生成 (S)-2-bromobutyric acid methyl ester
  参考文献：
  名称：

  Enoate Reductase-Mediated Preparation of Methyl (S)-2-Bromobutanoate, a Useful Key Intermediate for the Synthesis of Chiral Active Pharmaceutical Ingredients

  摘要：

  Enoate reductases belonging to the Old Yellow Enzyme (OYE) family were employed to develop a biocatalysed approach to methyl (S)-2-bromobutanoate, a key intermediate for the introduction of a particular stereogenic unit into the molecular skeleton of a certain class of chiral drugs. Methyl (Z)-2-bromocrotonate afforded, respectively, (S)-2-bromobutanoic acid (ee = 97%) and methyl (S)-2-bromobutanoate (ee = 97%) by baker's yeast fermentation and by OYE1-3 biotransformations. The bioreductions of other methyl 2-haloalkenoates were also considered. It was observed that the (Z)- and (E)-diastereoisomers of alpha-bromo unsaturated esters afforded the same enantiomer of the corresponding reduced product.

  DOI：

  10.1021/op200086t

文献信息

• Enantioselectivity of Haloalkane Dehalogenases and its Modulation by Surface Loop Engineering
  作者：Zbynek Prokop、Yukari Sato、Jan Brezovsky、Tomas Mozga、Radka Chaloupkova、Tana Koudelakova、Petr Jerabek、Veronika Stepankova、Ryo Natsume、Jan G. E. van Leeuwen、Dick B. Janssen、Jan Florian、Yuji Nagata、Toshiya Senda、Jiri Damborsky

  DOI：10.1002/anie.201001753

  日期：2010.8.16

  In the loop: Engineering of the surface loop in haloalkane dehalogenases affects their enantiodiscrimination behavior. The temperature dependence of the enantioselectivity (lnE versus 1/T) of β‐bromoalkanes by haloalkane dehalogenases is reversed (red data points) by deletion of the surface loop; the selectivity switches back when an additional single‐point mutation is made. This behavior is not observed

  在回路中：卤代烷脱卤酶表面回路的工程设计会影响其对映异构行为。卤代烷脱卤酶对β-溴代烷烃的对映选择性（ln E对1 / T）的温度依赖性通过消除表面环而被逆转（红色数据点）。当进行其他单点突变时，选择性会切换回去。对于α-溴代酸酯未观察到此行为。
• Enantioselective synthesis of α-bromo acid derivatives and bromohydrins † from tartrate derived bromoacetals
  作者：Scott A. Boyes、Alan T. Hewson

  DOI：10.1039/b002106g

  日期：——

  Bromination of the acetals 4 derived from aryl alkyl ketones, ArCOR, and (2R,3R)-tartaric acid results in bromoacetals 5 with 78–90% de. Hydrolysis of those compounds with Ar = 4-methoxyphenyl or 3-bromo-4-methoxyphenyl results, after recrystallisation, in α-bromoketones 8 with 66–98% ee which are shown to undergo the Baeyer–Villiger oxidation to α-bromoesters 9 with minimal racemisation. α-Bromoketone

  溴化 的 缩醛 4衍生自芳基烷基酮，ArCOR和（2 R，3 R）-酒石酸产生溴缩醛5的de-含量为78-90％。水解 取Ar = 4-甲氧基苯基或3-溴-4-甲氧基苯基的那些化合物 重结晶，在ee含量为66-98％的α-溴代酮8中，已显示出其经过Baeyer-Villiger氧化成α-溴代酸酯9的消旋作用极小。α-溴酮8d被证明经历了羰 减少到苏式-溴代醇15并保留立体化学。
• GC Separation of Enantiomers of Alkyl Esters of 2-Bromo Substituted Carboxylic Acids Enantiomers on 6-TBDMS-2,3-di-alkyl- β- and γ-Cyclodextrin Stationary Phases
  作者：Ivan Špánik、Darina Kačeriaková、Jan Krupčík、Daniel Wayne Armstrong

  DOI：10.1002/chir.22310

  日期：2014.6

  The gas chromatographic separation of enantiomers of 2‐Br carboxylic acid derivatives was studied on four different 6‐TBDMS‐2,3‐di‐O‐alkyl‐ β‐ and ‐γ‐CD stationary phases. The differences in thermodynamic data ΔH and –ΔS} for the 15 structurally related racemates were evaluated. The influence of structure differences in the alkyl substituents covalently attached to the stereogenic carbon atom, as

  在4种不同的6-TBDMS-2,3-di-O-烷基-β-和γ-CD固定相上研究了2-Br羧酸衍生物对映体的气相色谱分离。热力学数据的差异 ΔH和–ΔS}对15个与结构相关的外消旋体进行了评估。详细研究了共价连接到立体碳原子上的烷基取代基以及同源分析物的酯基中结构差异的影响，以及改性β-和γ-环糊精衍生物的选择性。环糊精空腔的大小，以及6-TBDMS-β-CD的2和3位的烷基取代基的延伸，也影响了它们的选择性。对映体分离的质量主要受分子酯基团的烷基链影响，这似乎与所用的CD固定相无关。在某些情况下，分离是由于外部吸附而不是与手性选择剂形成包合物而发生的。手性26：279–285，2014。©2014 Wiley Periodicals，Inc.
• Chemoenzymatic Synthesis of Enantioenriched ( <i>R</i> )‐ and ( <i>S</i> )‐Aryloxyalkanoic Herbicides
  作者：Danilo Colombo、Alessia Albergati、Erica E. Ferrandi、Davide Tessaro、Francesco G. Gatti、Elisabetta Brenna、Daniela Monti、Fabio Parmeggiani

  DOI：10.1002/ejoc.202200609

  日期：2022.7.7

  A versatile and sustainable approach to one of the most commonly employed families of herbicides has been developed, which is based on a biocatalytic reductive dehalogenation followed by simple chemical manipulations. A range of commercially relevant target molecules have been obtained in good yield and moderate to excellent enantioselectivity (to either enantiomer), without chromatographic purifications

  对于最常用的除草剂家族之一，已经开发出一种通用且可持续的方法，该方法基于生物催化还原脱卤，然后进行简单的化学操作。一系列商业相关的目标分子已经以良好的收率和中等至极好的对映选择性（对任一对映异构体）获得，无需色谱纯化和使用粗酶制剂。