glaucorubin | 148317-86-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 四吡咯及其衍生物
• 英文名称: glaucorubin
• 英文别名: 3-[2-[[3-(2-carboxyethyl)-5-[(Z)-(3,4-dimethyl-5-oxopyrrol-2-ylidene)methyl]-4-methyl-1H-pyrrol-2-yl]methyl]-5-[(Z)-(3,4-dimethyl-5-oxopyrrol-2-ylidene)methyl]-4-methyl-1H-pyrrol-3-yl]propanoic acid
• CAS: 148317-86-6
• 化学式: C₃₁H₃₆N₄O₆
• 分子量: 560.65
• InChiKey: IVIWMZYUJMXNEF-IHKZTNIUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  41
• 可旋转键数：
  10
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  164
• 氢给体数：
  6
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  甲醇 、 glaucorubin 生成 glaucorubin dimethyl ester
  参考文献：
  名称：

  Synthesis and unusual properties of C-(10)-gem-dimethyl bilirubin analogs

  摘要：

  The characteristic thermodynamically-favored intramolecularly hydrogen-bonded conformation adopted by bilirubin pigments is destabilized by substituting methyl groups on the C(10) central methylene. These methyl groups impose conformation-destabilizing methyl-methylene non-bonded steric interactions with the propionic acid beta-CH2 groups at C(8) and C(12) when the propionic acids are engaged in intramolecular hydrogen bonding with the opposing dipyrrinones. Amphiphilic 10,10-dimethylbilirubins (1) and (2) are found to be more polar, but also more soluble than the parents (3) and (4) in organic solvents; yet, H-1-NMR studies in non-polar solvents indicate that a deformed but folded, intramolecularly hydrogen-bonded conformation is retained. The dimethyl esters of 10,10-dimethylbilirubins 1 and 2 did not exhibit the typical strong tendency of bilirubin dimethyl esters to form intermolecular hydrogen bonds in non-polar solvents such as chloroform and benzene.

  DOI：

  10.1016/s0040-4020(01)80362-8
• 作为产物：
  描述：

  3,4-dimethyl-3-pyrrolin-2-one 在 盐酸 、 sodium hydroxide 作用下， 以 甲醇 、 水 为溶剂， 反应 0.08h， 生成 glaucorubin
  参考文献：
  名称：

  Synthesis and unusual properties of C-(10)-gem-dimethyl bilirubin analogs

  摘要：

  The characteristic thermodynamically-favored intramolecularly hydrogen-bonded conformation adopted by bilirubin pigments is destabilized by substituting methyl groups on the C(10) central methylene. These methyl groups impose conformation-destabilizing methyl-methylene non-bonded steric interactions with the propionic acid beta-CH2 groups at C(8) and C(12) when the propionic acids are engaged in intramolecular hydrogen bonding with the opposing dipyrrinones. Amphiphilic 10,10-dimethylbilirubins (1) and (2) are found to be more polar, but also more soluble than the parents (3) and (4) in organic solvents; yet, H-1-NMR studies in non-polar solvents indicate that a deformed but folded, intramolecularly hydrogen-bonded conformation is retained. The dimethyl esters of 10,10-dimethylbilirubins 1 and 2 did not exhibit the typical strong tendency of bilirubin dimethyl esters to form intermolecular hydrogen bonds in non-polar solvents such as chloroform and benzene.

  DOI：

  10.1016/s0040-4020(01)80362-8

文献信息

• Synthesis and unusual properties of C-(10)-gem-dimethyl bilirubin analogs
  作者：Meiqiang Xie、David A. Lightner

  DOI：10.1016/s0040-4020(01)80362-8

  日期：1993.3

  The characteristic thermodynamically-favored intramolecularly hydrogen-bonded conformation adopted by bilirubin pigments is destabilized by substituting methyl groups on the C(10) central methylene. These methyl groups impose conformation-destabilizing methyl-methylene non-bonded steric interactions with the propionic acid beta-CH2 groups at C(8) and C(12) when the propionic acids are engaged in intramolecular hydrogen bonding with the opposing dipyrrinones. Amphiphilic 10,10-dimethylbilirubins (1) and (2) are found to be more polar, but also more soluble than the parents (3) and (4) in organic solvents; yet, H-1-NMR studies in non-polar solvents indicate that a deformed but folded, intramolecularly hydrogen-bonded conformation is retained. The dimethyl esters of 10,10-dimethylbilirubins 1 and 2 did not exhibit the typical strong tendency of bilirubin dimethyl esters to form intermolecular hydrogen bonds in non-polar solvents such as chloroform and benzene.