3,5-二甲基-4-丙基-1H-吡咯-2-甲醛 | 157528-36-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 中文名称: 3,5-二甲基-4-丙基-1H-吡咯-2-甲醛
• 英文名称: 3,5-dimethyl-4-propylpyrrole-2-carbaldehyde
• 英文别名: kryptopyrrole aldehyde；3,5-dimethyl-4-propyl-pyrrole-2-carbaldehyde；3,5-Dimethyl-4-propyl-pyrrol-2-carbaldehyd；3,5-Dimethyl-4-propyl-1H-pyrrole-2-carbaldehyde
• CAS: 157528-36-4
• 化学式: C₁₀H₁₅NO
• mdl: MFCD18810189
• 分子量: 165.235
• InChiKey: VJJGUTUSPJUXCF-UHFFFAOYSA-N

物化性质

• 熔点：
  105 °C
• 沸点：
  278.6±28.0 °C(Predicted)
• 密度：
  1.024±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  12
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  32.9
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  3,5-二甲基-4-丙基-1H-吡咯-2-甲醛 在 溴 、 溶剂黄146 作用下， 生成 5-bromomethyl-3-methyl-4-propyl-pyrrole-2-carbaldehyde
  参考文献：
  名称：

  Fischer; Neber, Justus Liebigs Annalen der Chemie, 1932, vol. 496, p. 1,25

  摘要：

  DOI：
• 作为产物：
  描述：

  3-正丙基-2,4-戊二酮 在 sodium hydroxide 、 苯甲酰氯 作用下， 以 溶剂黄146 为溶剂， 反应 2.75h， 生成 3,5-二甲基-4-丙基-1H-吡咯-2-甲醛
  参考文献：
  名称：

  Normal and Abnormal Heme Biosynthesis. 1. Synthesis and Metabolism of Di- and Monocarboxylic Porphyrinogens Related to Coproporphyrinogen-III and Harderoporphyrinogen:  A Model for the Active Site of Coproporphyrinogen Oxidase

  摘要：

  Coproporphyrinogen oxidase (copro'gen oxidase), which catalyses the conversion of coproporphyrinogen-III via a monovinylic intermediate to protoporphyrinogen-IX, is one of the least well understood enzymes in the heme biosynthetic pathway. To develop a model for the substrate recognition and binding recognition for this enzyme, a series of substrate analogues were prepared with two alkyl substituents on positions 13 and 17 in place of the usual propionate residues. Although the required substrate probes are porphyrinogens (hexahydroporphyrins), the corresponding porphyrin methyl esters were initialy synthesized via a,c-biladiene intermediates. These were hydrolyzed and reduced with 3% sodium amalgam to give the unstable porphyrinogens needed for the biochemical investigations. These modified structures were metabolized by avian preparations of copro'gen oxidase to give monovinylic products, but the second propionate residue was not further metabolized. In three cases, the metabolites were isolated and further characterized by proton NMR spectroscopy and mass spectrometry. When methyl or ethyl groups were placed at the 13 and 17 positions, the resulting porphyrinogens were very good substrates (although the ethyl version, mesoporphyrinogen-VI, gave slightly better results), but when propyl units were introduced metabolism was significantly inhibited and the butyl-substituted structure was only slightly transformed after long incubation periods. These results suggest the presence of an active-site lipophobic region near the catalytic site for copro'gen oxidase. The observation that the related 3-vinyl- and 3-ethylporphyrinogens with 13,17-diethyl substituents were not substrates for this enzyme confirmed the need for a second propionate residue to hold the substrate in place at the catalytic site.

  DOI：

  10.1021/jo981473f

文献信息

• On the role of singlet oxygen in the self-sensitized photo-oxygenation of bilirubin and its pyrromethenone models
  作者：G.L. Landen、Y.-T. Park、D.A. Lightner

  DOI：10.1016/s0040-4020(01)88703-2

  日期：1983.1

  undergo self-sensitized photo-oxygenation, as does bilirubin. The reaction products of 1 consist of methylethylmaleimide, kryptopyrrole aldehyde and its photo-oxygenation product and oxygenated dipyrroles. The same products are formed from 2, except xeronimide is found instead of methylethyl-maleimide. Kinetic studies indicate that singlet oxygen is not necessarily involved in the photo-oxygenation

  4-乙基-3-甲基-5-（4-乙基-3,5-二甲基吡咯基-2-亚甲基）-3-吡咯啉-2-酮（1），3,4-二乙基-5-（4-乙基- 3,5-二甲基吡咯基-2-亚甲基）-3-吡咯啉-2-酮（2）和黄胆红素酸（XBR）与胆红素一样经历自敏化的光氧合。1的反应产物由甲基乙基马来酰亚胺，k吡咯醛及其光氧化产物和氧化的二吡咯组成。由2形成相同的产物，不同之处在于找到了二氧酰亚胺，而不是甲基乙基-马来酰亚胺。动力学研究表明，单重态氧不一定参与光氧合反应。1和2的几何光异构化（Z →2 E），并且XBR的发展速度甚至比光敏化的氧合作用更快。
• Fischer; Goldschmidt; Nuessler, Justus Liebigs Annalen der Chemie, 1931, vol. 486, p. 33
  作者：Fischer、Goldschmidt、Nuessler

  DOI：——

  日期：——
• Fischer; Rothhaas, Justus Liebigs Annalen der Chemie, 1930, vol. 484, p. 85,103, 104
  作者：Fischer、Rothhaas

  DOI：——

  日期：——
• Normal and Abnormal Heme Biosynthesis. 1. Synthesis and Metabolism of Di- and Monocarboxylic Porphyrinogens Related to Coproporphyrinogen-III and Harderoporphyrinogen:  A Model for the Active Site of Coproporphyrinogen Oxidase
  作者：Timothy D. Lash、Ukti N. Mani、Martin A. Drinan、Chun Zhen、Troii Hall、Marjorie A. Jones

  DOI：10.1021/jo981473f

  日期：1999.1.1

  Coproporphyrinogen oxidase (copro'gen oxidase), which catalyses the conversion of coproporphyrinogen-III via a monovinylic intermediate to protoporphyrinogen-IX, is one of the least well understood enzymes in the heme biosynthetic pathway. To develop a model for the substrate recognition and binding recognition for this enzyme, a series of substrate analogues were prepared with two alkyl substituents on positions 13 and 17 in place of the usual propionate residues. Although the required substrate probes are porphyrinogens (hexahydroporphyrins), the corresponding porphyrin methyl esters were initialy synthesized via a,c-biladiene intermediates. These were hydrolyzed and reduced with 3% sodium amalgam to give the unstable porphyrinogens needed for the biochemical investigations. These modified structures were metabolized by avian preparations of copro'gen oxidase to give monovinylic products, but the second propionate residue was not further metabolized. In three cases, the metabolites were isolated and further characterized by proton NMR spectroscopy and mass spectrometry. When methyl or ethyl groups were placed at the 13 and 17 positions, the resulting porphyrinogens were very good substrates (although the ethyl version, mesoporphyrinogen-VI, gave slightly better results), but when propyl units were introduced metabolism was significantly inhibited and the butyl-substituted structure was only slightly transformed after long incubation periods. These results suggest the presence of an active-site lipophobic region near the catalytic site for copro'gen oxidase. The observation that the related 3-vinyl- and 3-ethylporphyrinogens with 13,17-diethyl substituents were not substrates for this enzyme confirmed the need for a second propionate residue to hold the substrate in place at the catalytic site.
• Fischer; Neber, Justus Liebigs Annalen der Chemie, 1932, vol. 496, p. 1,25
  作者：Fischer、Neber

  DOI：——

  日期：——