1-Methyl-<1>benzopyrano<4,3-c>pyrazol-4(1H)-on | 130234-97-8

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 1-Methyl-<1>benzopyrano<4,3-c>pyrazol-4(1H)-on
• 英文别名: 1-methyl-1H-chromeno[4,3-c]pyrazol-4-one；1-methylchromeno[4,3-c]pyrazol-4(1H)-one；1-Methylchromeno[4,3-c]pyrazol-4-one
• CAS: 130234-97-8
• 化学式: C₁₁H₈N₂O₂
• 分子量: 200.197
• InChiKey: HMTUIVRIBXTUPG-UHFFFAOYSA-N

物化性质

• 熔点：
  184 °C(Solv: N,N-dimethylformamide (68-12-2))
• 沸点：
  397.2±11.0 °C(Predicted)
• 密度：
  1.40±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  15
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.09
• 拓扑面积：
  44.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  4-氯-3-甲酰基香豆素 在 sodium azide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 6.75h， 生成 1-Methyl-<1>benzopyrano<4,3-c>pyrazol-4(1H)-on
  参考文献：
  名称：

  Steinfuehrer, Thorsten; Hantschmann, Achim; Pietsch, Michael, Liebigs Annalen der Chemie, 1992, # 1, p. 23 - 28

  摘要：

  DOI：

文献信息

• Synthesis of New Substituted Chromen[4,3-c]pyrazol-4-ones and Their Antioxidant Activities
  作者：Abdullah Sulaiman Al-Ayed

  DOI：10.3390/molecules161210292

  日期：——

  A series of new coumarin derivatives 4 containing a 4-arylbut-3-en-2-one moiety were synthesized by condensation of 3-acetylcoumarin 1 with aryl aldehydes 2 in chloroform in the presence of piperidine. The interactions of 3-formyl-4-chlorocoumarin (3) with nitrogen-containg nucleophiles leading to the corresponding substituted chromen-[4,3-c]pyrazol-4-ones 5 are described. The structures of the obtained compounds were established on the basis of 1D NMR, 2D NMR and IR and further the compounds were evaluated for possible antioxidant activities. The coumarinic chalcone 4a has been found to be the most active (IC50 = 2.07 μM) in this study.

  在哌啶存在下，3-乙酰基香豆素 1 与芳基醛 2 在氯仿中缩合，合成了一系列含有 4-芳基丁-3-烯-2-酮分子的新型香豆素衍生物 4。文中描述了 3-甲酰基-4-氯香豆素（3）与含氮亲核物的相互作用，从而得到相应的取代色烯-[4,3-c]吡唑-4-酮 5。根据一维核磁共振、二维核磁共振和红外光谱确定了所获化合物的结构，并进一步评估了这些化合物可能具有的抗氧化活性。研究发现，香豆素查尔酮 4a 的活性最高（IC50 = 2.07 μM）。
• A rapid access to new coumarinyl chalcone and substituted chromeno[4,3-c]pyrazol-4(1H)-ones and their antibacterial and DPPH radical scavenging activities
  作者：Naceur Hamdi、Cédric Fischmeister、M. Carmen Puerta、Pedro Valerga

  DOI：10.1007/s00044-010-9326-1

  日期：2011.5

  A series of new coumarin derivatives 4 containing a chalcone moiety were synthesized by condensation of 3-acetyl-4-hydroxycoumarin 1 with aryl or heteroaryl aldehydes 2 in the presence of piperidine in chloroform. The interaction of 3-formyl-4-chloro-coumarin 3 with nitrogen compound nucleophiles are described and lead to the corresponding substituted chromen[4,3-c] pyrazol-4-ones 5. The structures of the obtained compounds were established on the basis of IR|1D|2D NMR, while crystal structure of 3-acetyl-4-hydroxy coumarin 1 was determined using X-ray diffraction and further were evaluated for possible antibacterial and antioxidant activities. The coumarinic chalcone 4d has been found to be the most active (IC(50) = 2.07 mu M) in this study.