(E)-isopropyl 4-oxopent-2-enoate | 1207866-08-7

• 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: (E)-isopropyl 4-oxopent-2-enoate
• 英文别名: isopropyl (E)-4-oxopent-2-enoate；propan-2-yl (E)-4-oxopent-2-enoate
• CAS: 1207866-08-7
• 化学式: C₈H₁₂O₃
• 分子量: 156.181
• InChiKey: KZGOHOUBXAAVEE-SNAWJCMRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.5
• 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：

  (E)-isopropyl 4-oxopent-2-enoate 、 (3-bromofuran-2-yloxy)triethylsilane 在 1,1,3,3-tetrakis(trifluoromethanesulfonyl)propane 、 盐酸 、 水 作用下， 以 二氯甲烷 、 四氢呋喃 为溶剂， 反应 3.0h， 以80%的产率得到isopropyl 2-(4-bromo-5-oxo-2,5-dihydrofuran-2-yl)-4-oxopentanoate
  参考文献：
  名称：

  Highly Effective Vinylogous Mukaiyama−Michael Reaction Catalyzed by Silyl Methide Species Generated from 1,1,3,3-Tetrakis(trifluoromethanesulfonyl)propane

  摘要：

  Silyl methide species in situ generated from 1,1,3,3-tetrakis(trifluoromethanesulfonyl)propane (Tf2CHCH2CHTf2) performed as an excellent acid catalyst for the vinylogous Mukaiyama-Michael reaction of alpha,beta-unsaturated ketones with 2-silyloxyfurans. Notably, the required loading of Tf2CHCH2CHTf2 to obtain the 1,4-adducts in reasonable yield was significantly low (from 0.05 to 1.0 mol %). This carbon acid-mediated VMM reaction provides a powerful synthetic methodology to construct highly substituted gamma-butenolide structure.

  DOI：

  10.1021/jo902641g
• 作为产物：
  描述：

  isopropyl 3-bromo-4-oxopentanoate 在 sodium acetate 、 溶剂黄146 作用下， 反应 2.0h， 以874 mg的产率得到(E)-isopropyl 4-oxopent-2-enoate
  参考文献：
  名称：

  Highly Effective Vinylogous Mukaiyama−Michael Reaction Catalyzed by Silyl Methide Species Generated from 1,1,3,3-Tetrakis(trifluoromethanesulfonyl)propane

  摘要：

  Silyl methide species in situ generated from 1,1,3,3-tetrakis(trifluoromethanesulfonyl)propane (Tf2CHCH2CHTf2) performed as an excellent acid catalyst for the vinylogous Mukaiyama-Michael reaction of alpha,beta-unsaturated ketones with 2-silyloxyfurans. Notably, the required loading of Tf2CHCH2CHTf2 to obtain the 1,4-adducts in reasonable yield was significantly low (from 0.05 to 1.0 mol %). This carbon acid-mediated VMM reaction provides a powerful synthetic methodology to construct highly substituted gamma-butenolide structure.

  DOI：

  10.1021/jo902641g

文献信息

• Substituted 4-oxo-crotonic acid derivatives as a new class of protein kinase B (PknB) inhibitors: synthesis and SAR study
  作者：Changliang Xu、Xiaoguang Bai、Jian Xu、Jinfeng Ren、Yun Xing、Ziqiang Li、Juxian Wang、Jingjing Shi、Liyan Yu、Yucheng Wang

  DOI：10.1039/c6ra24953a

  日期：——

  Protein kinase B (PknB) is an essential serine/threonine protein kinase required for Mycobacterium tuberculosis (M. tb) cell division and cell-wall biosynthesis. A high throughput screen using PknB identified a (E)-4-oxo-crotonic acid inhibitor, named YH-8, which was used as a scaffold for SAR investigations. A significant improvement in enzyme affinity was achieved. The results indicated that the

  蛋白激酶B（PknB）是结核分枝杆菌（M. tb）细胞分裂和细胞壁生物合成所必需的丝氨酸/苏氨酸蛋白激酶。使用PknB进行的高通量筛选鉴定出一种名为YH-8的（E）-4-氧代巴豆酸抑制剂，该抑制剂被用作SAR研究的支架。实现了酶亲和力的显着改善。结果表明，α，β-不饱和酮骨架和“反式”构型对于对抗PknB的活性至关重要。而且具有芳基的化合物，特别是在苯环上具有吸电子取代基的化合物，其效能是YH-8的四倍。
• Design, synthesis, and bioevaluation of a novel class of (E)-4-oxo-crotonamide derivatives as potent antituberculosis agents
  作者：Jinfeng Ren、Jian Xu、Guoning Zhang、Changliang Xu、LiLi Zhao、XueFu You、Yucheng Wang、Yu Lu、Liyan Yu、Juxian Wang

  DOI：10.1016/j.bmcl.2019.01.001

  日期：2019.2

  A series of novel (E)-4-oxo-2-crotonamide derivatives were designed and synthesized to find potent antituberculosis agents. All the target compounds were evaluated for their in vitro activity against Mycobacterium tuberculosis H37Rv(MTB). Results reveal that 4-phenyl moiety at part A and short methyl group at part C were found to be favorable. Most of the derivatives displayed promising activity against

  设计并合成了一系列新颖的（E）-4-氧代-2-巴豆酰胺衍生物，以寻找有效的抗结核药。评价所有目标化合物的抗结核分枝杆菌H37Rv（MTB）的体外活性。结果表明，发现A部分的4-苯基部分和C部分的短甲基是有利的。大多数衍生物显示出对MTB有希望的活性，MIC为0.125至4 µg / mL。尤其是，发现化合物IIIa16对MTB的MIC最佳活性为0.125μg/ mL，对耐药性临床MTB分离株的MIC最佳为0.05-0.48μg/ mL。