2,4-di(hydroxymethylene)-3-methylglutaraldehyde

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,4-di(hydroxymethylene)-3-methylglutaraldehyde
• 英文别名: 2,4-dihydroxymethylene-3-methylglutaraldehyde；2,4-bis(hydroxymethylidene)-3-methylpentanedial
• 化学式: C₈H₁₀O₄
• 分子量: 170.165
• InChiKey: KWRWABGBVNAQEV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.9
• 重原子数：
  12.0
• 可旋转键数：
  4.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  74.6
• 氢给体数：
  2.0
• 氢受体数：
  4.0

反应信息

• 作为产物：
  描述：

  丙二醛 、 2-formyl-3-(hexylamino)butanal 在 phosphate buffer 作用下， 以 重水 为溶剂， 反应 24.0h， 生成 正己胺 、 2,4-di(hydroxymethylene)-3-methylglutaraldehyde 、 1-hexyl-4-methyl-1,4-dihydro-3,5-pyridinedicarboxaldehyde
  参考文献：
  名称：

  Elucidation of Reaction Scheme Describing Malondialdehyde−Acetaldehyde−Protein Adduct Formation

  摘要：

  Malondialdehyde and acetaldehyde react together with proteins and form hybrid protein conjugates designated as MAA adducts, which have been detected in livers of ethanol-fed animals. Our previous studies have shown that MAA adducts are comprised of two distinct products. One adduct is composed of two molecules of malondialdehyde and one molecule of acetaldehyde and was identified as the 4-methpl-1,4-dihydropyridine-3,5-dicarbaldehyde derivative of an amino group (MHHDC adduct). The other adduct is a 1:1 adduct of malondialdehyde and acetaldehyde and was identified as the 2-formyl-3-(alkylamino)butanal derivative of an amino group (FAAB adduct). In this study, information on the mechanism of MAA adduct formation was obtained, focusing on whether the FAAB adduct serves as a precursor for the MDHDC adduct. Upon the basis of chemical analysis and NMR spectroscopy, two initial reaction steps appear to be a prerequisite for MDHDC formation. One step involves the reaction of one molecule of malondialdehyde and one of acetaldehyde with an amino group of a protein to form the FAAB product, while the other step involves the generation of a malondialdehyde-enamine. It appears that generation of the MDHDC adduct requires the FAAB moiety to be transferred to the nitrogen of the MDA-enamine. For efficient reaction of FAAB with the enamine to take place, additional experiments indicated that these two intermediates likely must be in positions on the protein of close proximity to each other. Further studies showed that the incubation of liver proteins from ethanol-fed rats with MDA resulted in a marked generation of MDHDC adducts, indicating the presence of a pool of FAAB adducts in the liver of ethanol-fed animals. Overall, these findings show that MDHDC-protein adduct formation occurs via the reaction of the FAAB moiety with a malondialdehyde-enamine, and further suggest that a similar mechanism may be operative in vivo in the liver during prolonged ethanol consumption.

  DOI：

  10.1021/tx000222a

文献信息

• Elucidation of Reaction Scheme Describing Malondialdehyde−Acetaldehyde−Protein Adduct Formation
  作者：Dean J. Tuma、Mark L. Kearley、Geoffrey M. Thiele、Simon Worrall、Alvin Haver、Lynell W. Klassen、Michael F. Sorrell

  DOI：10.1021/tx000222a

  日期：2001.7.1

  Malondialdehyde and acetaldehyde react together with proteins and form hybrid protein conjugates designated as MAA adducts, which have been detected in livers of ethanol-fed animals. Our previous studies have shown that MAA adducts are comprised of two distinct products. One adduct is composed of two molecules of malondialdehyde and one molecule of acetaldehyde and was identified as the 4-methpl-1,4-dihydropyridine-3,5-dicarbaldehyde derivative of an amino group (MHHDC adduct). The other adduct is a 1:1 adduct of malondialdehyde and acetaldehyde and was identified as the 2-formyl-3-(alkylamino)butanal derivative of an amino group (FAAB adduct). In this study, information on the mechanism of MAA adduct formation was obtained, focusing on whether the FAAB adduct serves as a precursor for the MDHDC adduct. Upon the basis of chemical analysis and NMR spectroscopy, two initial reaction steps appear to be a prerequisite for MDHDC formation. One step involves the reaction of one molecule of malondialdehyde and one of acetaldehyde with an amino group of a protein to form the FAAB product, while the other step involves the generation of a malondialdehyde-enamine. It appears that generation of the MDHDC adduct requires the FAAB moiety to be transferred to the nitrogen of the MDA-enamine. For efficient reaction of FAAB with the enamine to take place, additional experiments indicated that these two intermediates likely must be in positions on the protein of close proximity to each other. Further studies showed that the incubation of liver proteins from ethanol-fed rats with MDA resulted in a marked generation of MDHDC adducts, indicating the presence of a pool of FAAB adducts in the liver of ethanol-fed animals. Overall, these findings show that MDHDC-protein adduct formation occurs via the reaction of the FAAB moiety with a malondialdehyde-enamine, and further suggest that a similar mechanism may be operative in vivo in the liver during prolonged ethanol consumption.