8-acetoxy-1-nitropyrene | 1732-28-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 芘
• 英文名称: 8-acetoxy-1-nitropyrene
• 英文别名: 1-Pyrenol, 8-nitro-, acetate (ester)；(8-nitropyren-1-yl) acetate
• CAS: 1732-28-1
• 化学式: C₁₈H₁₁NO₄
• 分子量: 305.29
• InChiKey: NLUVPXWBYOREHQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  23
• 可旋转键数：
  2
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.06
• 拓扑面积：
  72.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  1-乙酰氧基芘 在 硝酸 、 乙酸酐 作用下， 生成 8-acetoxy-1-nitropyrene 、 6-acetoxy-1-nitropyrene 、 1-硝基-3-乙酰氧基芘
  参考文献：
  名称：

  Role of O-acetyltransferase in activation of oxidised metabolites of the genotoxic environmental pollutant 1-nitropyrene

  摘要：

  The genotoxic environmental contaminant l-nitropyrene is metabolised in mammalian systems by pathways more complex than the straightforward nitroreduction which accounts for most of its biological activity in bacteria. In order to evaluate the role of O-acetyltransferase (OAT) activity in generation of genotoxic intermediates from 1-nitropyrene, the mutagenicity of the major primary oxidised metabolites of 1-nitropyrene was characterised in the Ames Salmonella typhimurium plate incorporation assay with strain TA98, and with variants of TA98 deficient (TA98/1,8-DNP6) or enhanced (YG1024) in O-acetyltransferase. 1-Nitropyren-3-ol was more mutagenic in the absence than in the presence of S9, while 1-nitropyren-4-ol, 1-nitropyren-6-ol and 1-nitropyren-8-ol required S9 for maximum expression of mutagenicity. 1-Nitropyren-4-ol (176 rev/nmol without S9, 467 rev/nmol with S9 in TA98) and 1-nitropyren-6-ol (13 rev/nmol without S9, 266 rev/nmol with S9 in TA98) were overall the most potent nitropyrenol isomers assayed. 1-Acetamidopyren-8-ol and 2-acetamidopyrene 4,5-quinone were only minimally active. 1-Acetamidopyren-3-ol exhibited direct-acting mutagenicity. 1-Acetamidopyren-6-ol, previously shown to be a major contributor to mutagenicity in the urines of rats dosed with l-nitropyrene (Ball et al., 1984b), was confirmed as a potent (359 rev/nmol) S9-dependent mutagen. Both the direct-acting and the S9-dependent mutagenicity of all the compounds studied was enhanced in the OAT-overproducing strain and much diminished (though not always entirely lost) in the OAT-deficient strain, showing that OAT amplifies expression of the genotoxicity of these compounds. 1-Acetamidopyren-6-ol required both 89 and OAT activity in order to exhibit any mutagenicity; this finding strongly implicates N-hydroxylation followed by O-esterification, as opposed to further S9-catalyzed ring oxidation, as a major route of activation for urinary metabolites of 1-nitropyrene.

  DOI：

  10.1016/s0165-1218(96)90026-9

文献信息

• Chemical Oxidation of Nitrated Polycyclic Aromatic Hydrocarbons: Hydroxylation with Superoxide Anion Radical
  作者：Kiyoshi Fukuhara、Naoki Miyata

  DOI：10.1021/tx00043a003

  日期：1995.1

  Nitrated polycyclic aromatic hydrocarbon (nitroPAH) is a potent mutagen which is reductively and/or oxidatively metabolized. Biological oxidation of nitroPAH, such as hydroxylation and epoxidation, is known, but chemical oxidation has been reported in only a few papers. NitroPAH is barely oxidized by various chemical oxidants because of the electron deficient property of the aromatic ring with the nitro

  硝化的多环芳烃（nitroPAH）是一种强力的诱变剂，可以通过还原和/或氧化方式代谢。硝基PAH的生物氧化（例如羟基化和环氧化）是已知的，但是仅在几篇论文中报道了化学氧化。由于具有硝基取代基的芳环的电子不足特性，NitroPAH几乎不会被各种化学氧化剂氧化。超氧阴离子自由基的亲核反应性是已知的，因此本研究中进行了硝基PAH与化学生成的超氧阴离子自由基的氧化。当1-硝基py与KO2 / 18-crown-6在二甲基甲酰胺中反应时，可以制备产率得到5-，6-，8-和9-羟基-1-硝基py和1-羟基py。三个异构体二硝基nitro，3-硝基荧蒽，6-硝基苯并[a] py，和6-硝基铬被氧化为羟基衍生物，其中一些对应于硝基PAH的氧化代谢产物。用三氟过氧乙酸将二硝基吡啶氧化，得到K区氧化产物。