(3S,6S)-1,4,6-trimethyl-3-(1-methylethyl)-2,5-piperazinedione | 25581-99-1

• 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: (3S,6S)-1,4,6-trimethyl-3-(1-methylethyl)-2,5-piperazinedione
• 英文别名: 3-isopropyl-1,4,6-trimethyl-piperazine-2,5-dione；Cyclo-(N-MeVal-N-MeAla)；(3S,6S)-1,3,4-trimethyl-6-propan-2-ylpiperazine-2,5-dione
• CAS: 25581-99-1
• 化学式: C₁₀H₁₈N₂O₂
• 分子量: 198.265
• InChiKey: PTAASJZWKAJSGL-YUMQZZPRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.8
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  40.6
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  tert-butyl N-[[(2S)-2-[methyl-[(2S)-3-methyl-2-(methylamino)butanoyl]amino]propanoyl]amino]carbamate 以 氘代氯仿 为溶剂， 反应 72.0h， 以38 mg的产率得到(3S,6S)-1,4,6-trimethyl-3-(1-methylethyl)-2,5-piperazinedione
  参考文献：
  名称：

  Probing Host-Selective Phytotoxicity:  Synthesis of Destruxin B and Several Natural Analogues

  摘要：

  The syntheses of the host-selective phytotoxin destruxin B [cyclo(beta Ala-Hmp-Pro-Ile-MeVal-MeAla), Hmp = (2R)-2-hydroxy-4-methylpentanoic acid], and the closely related natural analogues homodestruxin B (MeVal --> MeIle), desmethyldestruxin B (MeVal --> Val), hydroxydestruxin B (Hmp --> Dhmp, Dhmp = (2R)-2,4-dihydroxy-4-methylpentanoic acid), and hydroxyhomodestruxin B (MeVal --> MeIle, Hmp-Dhmp) are described. In each case, the MeAla-beta Ala linkage was formed by cyclization and the precursor linear hexadepsipeptides were formed by condensing two three-residue fragments. Radiolabeled samples of destruxin B, homodestruxin B, and hydroxydestruxin B were prepared by coupling [3-C-14]-beta -alanine to the appropriate pentadepsipeptide followed by cyclization. A noteworthy feature of the synthesis involves the novel use of a Boc-hydrazide protecting group on dipeptides with a C-terminal N-methylalanine residue to inhibit the otherwise facile dioxopiperazine formation during peptide coupling.

  DOI：

  10.1021/jo015953+

文献信息

• A chiral relay auxiliary for the synthesis of homochiral α-amino acids
  作者：Steven D. Bull、Stephen G. Davies、Simon W. Epstein、Michael A. Leech、Jacqueline V. A. Ouzman

  DOI：10.1039/a803124j

  日期：——

  A new chiral auxiliary (3S)-N,N′-bis(p-methoxybenzyl)-3-isopropylpiperazine-2,5-dione 7 has been developed for the asymmetric synthesis of α-amino acids. The auxiliary 7 employs a novel chiral relay network based on non-stereogenic N-benzyl protecting groups which enhance the diastereoselectivity observed during alkylation of its C6 enolate 25.

  我们开发了一种新的手性辅助剂 (3S)-N,Nâ²-双（对甲氧基苄基）-3-异丙基哌嗪-2,5-二酮 7，用于δ-氨基酸的不对称合成。辅助剂 7 采用了一种基于非固有 N-苄基保护基团的新型手性中继网络，从而提高了其 C6 对映体 25 烷基化过程中观察到的非对映选择性。
• Chiral relay auxiliary for the synthesis of enantiomerically pure α-amino acids
  作者：Steven D. Bull、Stephen G. Davies、Simon W. Epstein、Jacqueline V. A. Ouzman

  DOI：10.1039/a800407b

  日期：——

  Chiral auxiliary (3S)-N,N′-bis(p-methoxybenzyl)-3-isopropylpiperazine-2,5-dione employs a chiral relay network based on non-stereogenic N-benzyl protecting groups to enhance diastereocontrol during enolate alkylation.

  手性辅助剂（3S）-N,N′-双（对甲氧基苄基）-3-异丙基哌嗪-2,5-二酮利用基于非立体中心的N-苄基保护基团的手性中继网络，以增强酮酸酯烷基化过程中的非对映选择性控制。