Agn-PC-0muwf5 | 303752-13-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: Agn-PC-0muwf5
• 英文别名: 1-cyclopentyl-3-ethyl-6-[(4-methoxyphenyl)methyl]-4,5-dihydropyrazolo[3,4-c]pyridin-7-one;4-methylbenzenesulfonic acid
• CAS: 303752-13-8
• 化学式: C₇H₈O₃S*C₂₁H₂₇N₃O₂
• 分子量: 525.669
• InChiKey: MMYOHOOHXIIKFE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.01
• 重原子数：
  37
• 可旋转键数：
  6
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  110
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  γ-己内酯 在 sodium hypochlorite 、 sodium tetrahydroborate 、 2,2,6,6-四甲基哌啶氧化物 、 potassium tert-butylate 、 caesium carbonate 、 potassium bromide 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 、 乙酸乙酯 、 N,N-二甲基甲酰胺 为溶剂， 反应 51.5h， 生成 Agn-PC-0muwf5
  参考文献：
  名称：

  Process Research and Large-Scale Synthesis of a Novel 5,6-Dihydro-(9H)-pyrazolo[3,4-c]-1,2,4-triazolo[4,3-a]pyridine PDE-IV Inhibitor

  摘要：

  An efficient synthesis of the PDE IV inhibitor, 9H.-cyclopentyl.. 7-ethyl-3-(thiophen-2-yl)-pyrazolo[3,4-c]-1,2,4-triazolo-,5,6-dihydro-[4,3-a]pyridine I is described. Starting from commercially available gamma -caprolactone, the synthesis was carried out in 10 steps. Key transformations were the selective O-methylation of diketone, 3-hydroxy-1-(4-methoxybenzyl)-4-propionyl-5,6-dihydro-1H-pyridin-2-one, with dimethyl sulfate and cesium carbonate in dimethylformamide, a one-pot pyrazole formation with subsequent acidic deprotection to provide lactam, 1-cyclopentyl-3-ethyl-1,4,5,6-tetrahydropyrazolo[3,4,c]pyridin-7- one, and finally the utilization of imidate, 1-cyclopentyl-7-ethoxy-3-ethyl-4,5-dihydro-1H-pyrazolo[3,4-c]pyridine for the introduction of the triazole moiety. This process avoided the use of harsh reaction conditions, undesirable reagents and overcame the environmental concerns in the original synthesis.

  DOI：

  10.1021/op010222x

文献信息

• Process Research and Large-Scale Synthesis of a Novel 5,6-Dihydro-(9H)-pyrazolo[3,4-<i>c</i>]-1,2,4-triazolo[4,3-<i>a</i>]pyridine PDE-IV Inhibitor
  作者：Frank J. Urban、Bruce G. Anderson、Susan L. Orrill、Peter J. Daniels

  DOI：10.1021/op010222x

  日期：2001.11.1

  An efficient synthesis of the PDE IV inhibitor, 9H.-cyclopentyl.. 7-ethyl-3-(thiophen-2-yl)-pyrazolo[3,4-c]-1,2,4-triazolo-,5,6-dihydro-[4,3-a]pyridine I is described. Starting from commercially available gamma -caprolactone, the synthesis was carried out in 10 steps. Key transformations were the selective O-methylation of diketone, 3-hydroxy-1-(4-methoxybenzyl)-4-propionyl-5,6-dihydro-1H-pyridin-2-one, with dimethyl sulfate and cesium carbonate in dimethylformamide, a one-pot pyrazole formation with subsequent acidic deprotection to provide lactam, 1-cyclopentyl-3-ethyl-1,4,5,6-tetrahydropyrazolo[3,4,c]pyridin-7- one, and finally the utilization of imidate, 1-cyclopentyl-7-ethoxy-3-ethyl-4,5-dihydro-1H-pyrazolo[3,4-c]pyridine for the introduction of the triazole moiety. This process avoided the use of harsh reaction conditions, undesirable reagents and overcame the environmental concerns in the original synthesis.