| 244756-66-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• CAS: 244756-66-9
• 化学式: C₁₅H₂₉N₂O
• 分子量: 253.408
• InChiKey: NBDWZANXMNDYRE-UHFFFAOYSA-O

计算性质

• 辛醇/水分配系数(LogP)：
  2.65
• 重原子数：
  18.0
• 可旋转键数：
  9.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  35.27
• 氢给体数：
  2.0
• 氢受体数：
  2.0

反应信息

• 作为反应物：
  描述：

  甲醇 、 在 silica gel 作用下， 反应 48.0h， 生成 N,N'-diisopropyl-2-methoxy-2-pentyl-1,2-dihydropyrrol-3-one iminium
  参考文献：
  名称：

  Independent Synthesis, Solution Behavior, and Studies on the Mechanism of Formation of a Primary Amine-Derived Fluorophore Representing Cross-linking of Proteins by (E)-4-Hydroxy-2-nonenal

  摘要：

  Lipid peroxidation in aging and degenerative disease results in the production of 4-hydroxy-2-alkenals that modify proteins and give rise to both protein cross-linking and fluorophore generation. Recent model studies demonstrated that the major ex/em 360/430 fluorophore formed from (E)-4-hydroxy-2-nonenal (HNE) or (E)-4-hydroxy-2-hexenal (HHE) and protein lysine-based amine is a 2-alkyl-2-hydroxy-1,2-dihydropyrrol-3-one iminium 1:2 cross-link (1), a structure that is further confirmed here using N-15-labeling, and which has pH stability characteristics the same as those of lipofuscin pigments isolated from human tissues. Fluorophore generation represents an overall four-electron oxidation, requires dioxygen, and is enhanced by the presence of Cu(II). The HNE-propylamine-derived fluorophore 1a was independently synthesized from either 3,4-dioxononanal (8) or (E)-4-oxo-2-nonenal (13), providing further evidence for its assigned structure and clues to how it forms from HNE. Mechanistic studies on HNE-derived fluorophore formation permit ruling out the initial reversible HNE-derived Schiff base Michael adduct (17) as an intermediate. In addition, the structurally related non-cross-link 2-pentyl-2-hydroxy-1,2-dihydropyrrol-3-one 9a that forms along with 1a from 8 does not form from HNE and does: not serve as a precursor to la in the HNE-amine reaction system. A mechanism involving two 2e oxidations following initial Schiff base formation is proposed that is consistent with intermediates independently accessed from 8 and 13.

  DOI：

  10.1021/jo982523j
• 作为产物：
  描述：

  (E)-4-hydroxy-2-nonenal dimethyl acetal 在 盐酸 、 2,2'-联吡啶 、 camphor-10-sulfonic acid 、 sodium acetate 、 copper(II) sulfate 、 pyridinium chlorochromate 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 10.0h， 生成
  参考文献：
  名称：

  Independent Synthesis, Solution Behavior, and Studies on the Mechanism of Formation of a Primary Amine-Derived Fluorophore Representing Cross-linking of Proteins by (E)-4-Hydroxy-2-nonenal

  摘要：

  Lipid peroxidation in aging and degenerative disease results in the production of 4-hydroxy-2-alkenals that modify proteins and give rise to both protein cross-linking and fluorophore generation. Recent model studies demonstrated that the major ex/em 360/430 fluorophore formed from (E)-4-hydroxy-2-nonenal (HNE) or (E)-4-hydroxy-2-hexenal (HHE) and protein lysine-based amine is a 2-alkyl-2-hydroxy-1,2-dihydropyrrol-3-one iminium 1:2 cross-link (1), a structure that is further confirmed here using N-15-labeling, and which has pH stability characteristics the same as those of lipofuscin pigments isolated from human tissues. Fluorophore generation represents an overall four-electron oxidation, requires dioxygen, and is enhanced by the presence of Cu(II). The HNE-propylamine-derived fluorophore 1a was independently synthesized from either 3,4-dioxononanal (8) or (E)-4-oxo-2-nonenal (13), providing further evidence for its assigned structure and clues to how it forms from HNE. Mechanistic studies on HNE-derived fluorophore formation permit ruling out the initial reversible HNE-derived Schiff base Michael adduct (17) as an intermediate. In addition, the structurally related non-cross-link 2-pentyl-2-hydroxy-1,2-dihydropyrrol-3-one 9a that forms along with 1a from 8 does not form from HNE and does: not serve as a precursor to la in the HNE-amine reaction system. A mechanism involving two 2e oxidations following initial Schiff base formation is proposed that is consistent with intermediates independently accessed from 8 and 13.

  DOI：

  10.1021/jo982523j