(-)-protubonine A | 1613303-27-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: (-)-protubonine A
• 英文别名: (3S,5aR,10bR,11aS)-6-Acetyl-6,10b,11,11a-tetrahydro-10b-hydroxy-3-(2-methylpropyl)-2H-pyrazino[1a(2),2a(2):1,5]pyrrolo[2,3-b]indole-1,4(3H,5aH)-dione；(1R,4S,7S,9R)-16-acetyl-9-hydroxy-4-(2-methylpropyl)-2,5,16-triazatetracyclo[7.7.0.02,7.010,15]hexadeca-10,12,14-triene-3,6-dione
• CAS: 1613303-27-7
• 化学式: C₁₉H₂₃N₃O₄
• 分子量: 357.409
• InChiKey: IQSAULADRNRYOT-KNEBKQPDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  26
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.53
• 拓扑面积：
  90
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  环(L-亮氨酰-L-色氨酰) 在 potassium tert-butylate 、 溶剂黄146 、 N,N-二异丙基乙胺 、 copper dichloride 、 锌 作用下， 以 四氢呋喃 、 水 、 乙腈 为溶剂， 反应 60.0h， 生成 (-)-protubonine A
  参考文献：
  名称：

  Copper-Catalyzed Radical Cyclization To Access 3-Hydroxypyrroloindoline: Biomimetic Synthesis of Protubonine A

  摘要：

  An unprecedented copper-catalyzed intramolecular radical cyclization was developed for the synthesis of 3-hydroxypyrroloindoline skeletons in excellent yields. The 3-hydroxyl group was introduced by trapping the radical intermediate with molecular oxygen or TEMPO. This process represents a unique radical oxidation pathway for tryptamine/tryptophan derivatives and allows a rapid biomimetic synthesis of natural product protubonine A.

  DOI：

  10.1021/ol501287x

文献信息

• An environmentally friendly protocol for oxidative halocyclization of tryptamine and tryptophol derivatives
  作者：Jun Xu、Rongbiao Tong

  DOI：10.1039/c7gc01341h

  日期：——

  environmentally friendly and efficient protocol (KX/oxone) for oxidative halocyclization of tryptamine/tryptophol derivatives was developed and demonstrated with 28 examples and concise total synthesis of cyclotryptamine alkaloid protubonines A and B. The distinct advantage of this protocol over all previous methods is that no organic byproduct is generated from a halogenating agent or oxidant, thus greatly reducing

  开发了一种环境友好，高效的方案，用于色胺/色氨酸衍生物的氧化卤代环化反应，并通过28个实例进行了证明，并简明地合成了环色胺生物碱A和B的全合成。与所有先前方法相比，该方案的独特优势在于：卤化剂或氧化剂不会产生有机副产物，因此大大降低了卤代环化对环境的影响，并促进了反应后的纯化。
• Total Synthesis and Structural Revision of (-)-Protubonine A and (-)-Protubonine B
  作者：Paula Lorenzo、Rosana Álvarez、Ángel R. de Lera

  DOI：10.1002/ejoc.201400029

  日期：2014.4

  The proposed structures of (–)-protubonine A and (–)-protubonine B, which are pyrrolidinoindoline diketopiperazine alkaloids that were isolated from the marine-derived fungus Aspergillus sp. SF-5044, have been synthesized and correspond to diastereomers of the natural isolates. The total syntheses, herein, established the stereostructures of the alkaloids as the C-11 epimers of the purported structures

  (-)-protubonine A 和 (-)-protubonine B 的拟议结构，它们是从海洋来源的真菌 Aspergillus sp. 中分离的吡咯烷并吲哚啉二酮哌嗪生物碱。SF-5044 已合成，对应于天然分离物的非对映异构体。本文中的全合成将生物碱的立体结构确定为所声称结构的 C-11 差向异构体。
• Copper-Catalyzed Radical Cyclization To Access 3-Hydroxypyrroloindoline: Biomimetic Synthesis of Protubonine A
  作者：Xu Deng、Kangjiang Liang、Xiaogang Tong、Ming Ding、Dashan Li、Chengfeng Xia

  DOI：10.1021/ol501287x

  日期：2014.6.20

  An unprecedented copper-catalyzed intramolecular radical cyclization was developed for the synthesis of 3-hydroxypyrroloindoline skeletons in excellent yields. The 3-hydroxyl group was introduced by trapping the radical intermediate with molecular oxygen or TEMPO. This process represents a unique radical oxidation pathway for tryptamine/tryptophan derivatives and allows a rapid biomimetic synthesis of natural product protubonine A.