Boc-D-aThr-D-Ala-OBn | 936703-31-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: Boc-D-aThr-D-Ala-OBn
• 英文别名: benzyl (2R)-2-[[(2R,3R)-3-hydroxy-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]propanoate
• CAS: 936703-31-0
• 化学式: C₁₉H₂₈N₂O₆
• 分子量: 380.441
• InChiKey: UFHHDLCMCSDVDU-UMVBOHGHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  27
• 可旋转键数：
  10
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  114
• 氢给体数：
  3
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  Boc-D-aThr-D-Ala-OBn 在 palladium on activated charcoal 氢气 、 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 、 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 67.0h， 生成 1-O-cyclohexyl 4-O-prop-2-enyl (2R,3R)-3-[[(2S)-5-(9H-fluoren-9-ylmethoxycarbonylamino)-2-[[(2S,3S)-3-hydroxy-1-[(2R)-2-[[(2R,3R)-3-hydroxy-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]propanoyl]pyrrolidine-2-carbonyl]amino]pentanoyl]amino]-2-phenylmethoxybutanedioate
  参考文献：
  名称：

  Total Synthesis of Plusbacin A₃:  A Depsipeptide Antibiotic Active Against Vancomycin-Resistant Bacteria

  摘要：

  Plusbacin A(3) is a depsipeptide antibiotic isolated from Pseudomonas sp. Although the stereochemistry at the lactone stereocenter had not been determined, biological evaluation of this compound demonstrated it to have promising antibacterial activity against vancomycin-resistant enterococci. Its mechanism of action remains to be conclusively established, but it is believed to exert its antibiotic effect through inhibition of bacterial cell wall biosynthesis. In this paper, we describe the first total synthesis of plusbacin A(3) and assign the stereochemistry for the remaining unassigned lactone stereocenter.

  DOI：

  10.1021/ja068455x
• 作为产物：
  描述：

  (R)-(+)-benzyl 2-(tert-butoxycarbonylamino)propionate 在 1-羟基苯并三唑 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 37.0h， 生成 Boc-D-aThr-D-Ala-OBn
  参考文献：
  名称：

  Total Synthesis of Plusbacin A₃:  A Depsipeptide Antibiotic Active Against Vancomycin-Resistant Bacteria

  摘要：

  Plusbacin A(3) is a depsipeptide antibiotic isolated from Pseudomonas sp. Although the stereochemistry at the lactone stereocenter had not been determined, biological evaluation of this compound demonstrated it to have promising antibacterial activity against vancomycin-resistant enterococci. Its mechanism of action remains to be conclusively established, but it is believed to exert its antibiotic effect through inhibition of bacterial cell wall biosynthesis. In this paper, we describe the first total synthesis of plusbacin A(3) and assign the stereochemistry for the remaining unassigned lactone stereocenter.

  DOI：

  10.1021/ja068455x

文献信息

• Total Synthesis of Plusbacin A₃ and Its Dideoxy Derivative Using a Solvent-Dependent Diastereodivergent Joullié–Ugi Three-Component Reaction
  作者：Akira Katsuyama、Fumika Yakushiji、Satoshi Ichikawa

  DOI：10.1021/acs.joc.8b00038

  日期：2018.7.6

  which is a depsipeptide with antibacterial activity, and its dideoxy derivative are described. To establish an efficient synthetic route of 1, a solvent-dependent diastereodivergent Joullié–Ugi three-component reaction (JU-3CR) was used to construct trans-Pro(3-OH) in a small number of steps. Two strategies were investigated toward the total synthesis. In the first synthetic strategy, the key steps were

  描述了我们对plusbacin A 3（1）的合成研究的全部细节，plusbacin A 3（一种具有抗菌活性的二肽）及其双脱氧衍生物。为了建立有效的1合成路线，使用了溶剂依赖性非对映异构的Joullié-Ugi三组分反应（JU-3CR ），可通过少量步骤构建反式Pro（3-OH）。针对总合成研究了两种策略。在第一个合成策略中，关键步骤是反式JU-3CR和合成最后阶段的大环内酯化。在1,1,1,3,3,3-六氟异丙醇中使用烷基异氰化物的JU-3CR提供了反式产物和片段的偶联以制备大环化前体进行得很顺利。但是，尝试进行大内酯化不能提供所需的产物。然后，研究了在初始阶段包括酯化的第二种策略。使用可转换的异氰酸酯检查了构建反式-Pro（3-OH）的方法，该可转换的异氰酸酯可转换为以下酰胺化所需的羧酸。通过使用羟基-Asp衍生物和相应的醇的分子间偶联来实现酯键的形成，并且酰胺化得到线性的二肽。线性
• Total Synthesis of Plusbacin A₃:  A Depsipeptide Antibiotic Active Against Vancomycin-Resistant Bacteria
  作者：Aaron Wohlrab、Ryan Lamer、Michael S. VanNieuwenhze

  DOI：10.1021/ja068455x

  日期：2007.4.1

  Plusbacin A(3) is a depsipeptide antibiotic isolated from Pseudomonas sp. Although the stereochemistry at the lactone stereocenter had not been determined, biological evaluation of this compound demonstrated it to have promising antibacterial activity against vancomycin-resistant enterococci. Its mechanism of action remains to be conclusively established, but it is believed to exert its antibiotic effect through inhibition of bacterial cell wall biosynthesis. In this paper, we describe the first total synthesis of plusbacin A(3) and assign the stereochemistry for the remaining unassigned lactone stereocenter.