ethyl 2-(5-(methoxycarbonyl)-2-methylphenyl)-6-ethyl-6,7-dihydro-3-methyl-7-oxo-2H-pyrazolo[3,4-d]pyridazine-4-carboxylate | 1228804-65-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: ethyl 2-(5-(methoxycarbonyl)-2-methylphenyl)-6-ethyl-6,7-dihydro-3-methyl-7-oxo-2H-pyrazolo[3,4-d]pyridazine-4-carboxylate
• 英文别名: (1->3)；Ethyl 6-ethyl-2-(5-methoxycarbonyl-2-methylphenyl)-3-methyl-7-oxopyrazolo[3,4-d]pyridazine-4-carboxylate
• CAS: 1228804-65-6
• 化学式: C₂₀H₂₂N₄O₅
• 分子量: 398.418
• InChiKey: PHJOUEGDXDFJMF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  29
• 可旋转键数：
  7
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  103
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  Methyl 3-hydrazinyl-4-methylbenzoate 、 ethyl 4-acetyl-1-ethyl-1,6-dihydro-5-nitro-6-oxopyridazine-3-carboxylate 以 乙醇 为溶剂， 以60%的产率得到ethyl 2-(5-(methoxycarbonyl)-2-methylphenyl)-6-ethyl-6,7-dihydro-3-methyl-7-oxo-2H-pyrazolo[3,4-d]pyridazine-4-carboxylate
  参考文献：
  名称：

  Functionalized pyrazoles and pyrazolo[3,4-d]pyridazinones: Synthesis and evaluation of their phosphodiesterase 4 inhibitory activity

  摘要：

  A series of pyrazoles and pyrazolo[3,4-d]pyridazinones were synthesized and evaluated for their PDE4 inhibitory activity. All the pyrazoles were found devoid of activity, whereas some of the novel pyrazolo[3,4-d]pyridazinones showed good activity as PDE4 inhibitors. The most potent compounds in this series showed an IC50 in the nanomolar range. The ability to inhibit TNF-alpha release in human PBMCs was determined for two representative compounds, finding values in the sub-micromolar range. SARs studies demonstrated that the best arranged groups around the heterocyclic core are 2-chloro-, 2-methyl- and 3-nitrophenyl at position 2, an ethyl ester at position 4 and a small alkyl group at position 6. Molecular modeling studies performed on a representative compound allowed to define its binding mode to the PDE4B isoform. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2010.03.066

文献信息

• Functionalized pyrazoles and pyrazolo[3,4-d]pyridazinones: Synthesis and evaluation of their phosphodiesterase 4 inhibitory activity
  作者：Pierfrancesco Biagini、Claudio Biancalani、Alessia Graziano、Nicoletta Cesari、Maria Paola Giovannoni、Agostino Cilibrizzi、Vittorio Dal Piaz、Claudia Vergelli、Letizia Crocetti、Maurizio Delcanale、Elisabetta Armani、Andrea Rizzi、Paola Puccini、Paola Maria Gallo、Daniele Spinabelli、Paola Caruso

  DOI：10.1016/j.bmc.2010.03.066

  日期：2010.5

  A series of pyrazoles and pyrazolo[3,4-d]pyridazinones were synthesized and evaluated for their PDE4 inhibitory activity. All the pyrazoles were found devoid of activity, whereas some of the novel pyrazolo[3,4-d]pyridazinones showed good activity as PDE4 inhibitors. The most potent compounds in this series showed an IC50 in the nanomolar range. The ability to inhibit TNF-alpha release in human PBMCs was determined for two representative compounds, finding values in the sub-micromolar range. SARs studies demonstrated that the best arranged groups around the heterocyclic core are 2-chloro-, 2-methyl- and 3-nitrophenyl at position 2, an ethyl ester at position 4 and a small alkyl group at position 6. Molecular modeling studies performed on a representative compound allowed to define its binding mode to the PDE4B isoform. (C) 2010 Elsevier Ltd. All rights reserved.