4-bromo-N-ethylbutanamide | 188726-95-6

• 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: 4-bromo-N-ethylbutanamide
• CAS: 188726-95-6
• 化学式: C₆H₁₂BrNO
• 分子量: 194.071
• InChiKey: LPRUQXXXLBBCPZ-UHFFFAOYSA-N

物化性质

• 沸点：
  304.1±25.0 °C(Predicted)
• 密度：
  1.322±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  9
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  4-bromo-N-ethylbutanamide 在 吡啶 、 sodium hydroxide 作用下， 反应 3.5h， 生成 4'-(4-methylthio-1-phenylpyrazolo[3,4-d]pyrimidin-6-ylthio)-N-ethyl-butanamide
  参考文献：
  名称：

  1-Phenylpyrazolo[3,4-d]pyrimidines as adenosine antagonists: the effects of substituents at C4 and C6

  摘要：

  Forty-two 1-phenyl-pyrazolo[3,4-d]pyrimidines substituted at C6 with thioethers containing distal amide substituents and substituted at C4 with thiol, thiomethyl or amino were synthesized and tested for adenosine A(1) and A(2a) receptor binding. Compared with a thiol at C4, both S-methylation and conversion to an amino resulted in increased affinity at both receptors with the C4 amino compounds having the highest affinity. The C-4 region of the receptor consists of an alkyl pocket containing a hydrogen-bonding site. The study established that for high affinity at both the A(1) and A(2a) adenosine receptors the distal amide should be separated from the C6 thiol by only one carbon. In this study, 2'-(4-amino-1-phenylpyrazolo[3,4-d]pyrimidin-6-ylthio)- N-ethyl-ethanamide (4b) had the highest affinity at the A(1) receptor with a K-i of 12.1 nM while 2'-(4-amino-1-phenylpyrazolo[3,4-d]pyrimidin-6-ylthio)ethanamide (4a) had the highest affinity at the A(2a) receptor with a K-i of 44.9 nM. (C) 1997, Elsevier Science Ltd.

  DOI：

  10.1016/s0968-0896(96)00240-4
• 作为产物：
  描述：

  4-溴丁酰氯 、 乙胺盐酸盐 在 potassium carbonate 作用下， 生成 4-bromo-N-ethylbutanamide
  参考文献：
  名称：

  Important Role of the 3-Mercaptopropionamide Moiety in Glutathione:  Promoting Effect on Decomposition of the Adduct of Glutathione with the Oxoammonium Ion of TEMPO

  摘要：

  Cyclic voltammetry of TEMPO in aqueous 0.1 M NaOH in the presence of glutathione (GSH) or cysteine (Cys) indicated the following points: (i) Both of the thiols rapidly formed adducts 3 with oxoammonium ion 1 anodically generated from TEMPO. (ii) 3 generated from GSH entered a succeeding reaction that generated N-oxide anion 2(-) (the reduced TEMPO). (iii) 3 produced from Cys remained intact over the time scale of voltammetry. A structural feature of GSH was considered to contribute to the observed behavior of this tripeptide. Possible structural features were evaluated by screening various thiols on the basis of whether they provided GSH-like voltammetric results. The 3-mercaptopropionamide group with an amide hydrogen in GSH was determined to be responsible for the observed difference between GSH and Cys. The likely function is to transform 3 from GSH into a 5-imino-1,2-oxathiolane intermediate, thereby releasing 2(-). Product analysis for reactions of model thiols representing GSH and Cys with 1 provided support for this argument and suggested that the reaction of GSH or Cys with 1 would produce the corresponding disulfides, regardless of whether a five-membered ring intermediate was formed. The proposed function of the 3-mercaptopropionamide moiety of GSH may provide useful insight for the molecular design of exogenous thiol compounds as novel drugs for the treatment of GSH-depletion-related disorders.

  DOI：

  10.1021/jo050783c