3-(2-methyl-6-dimethylaminopyridin-3-yl)-2,5-dimethyl-7-hydroxypyrazolo[1,5-a]pyrimidine | 764651-95-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 3-(2-methyl-6-dimethylaminopyridin-3-yl)-2,5-dimethyl-7-hydroxypyrazolo[1,5-a]pyrimidine
• CAS: 764651-95-8
• 化学式: C₁₆H₁₉N₅O
• 分子量: 297.36
• InChiKey: PTMNCPZKVWFEJK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.49
• 重原子数：
  22.0
• 可旋转键数：
  2.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  66.55
• 氢给体数：
  1.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  3-(2-methyl-6-dimethylaminopyridin-3-yl)-2,5-dimethyl-7-hydroxypyrazolo[1,5-a]pyrimidine 在 三氯氧磷 作用下， 以 乙腈 为溶剂， 生成 3-(2-methyl-6-dimethylaminopyridin-3-yl)-2,5-dimethyl-7-chloropyrazolo[1,5-a]pyrimidine
  参考文献：
  名称：

  Design of 2,5-Dimethyl-3-(6-dimethyl-4-methylpyridin-3-yl)-7-dipropylaminopyrazolo[1,5-a]pyrimidine (NBI 30775/R121919) and Structure−Activity Relationships of a Series of Potent and Orally Active Corticotropin-Releasing Factor Receptor Antagonists

  摘要：

  We have previously shown that 3-phenylpyrazolo[1,5-a]pyrimidines exemplified by 8 were potent antagonists of the human corticotropin-releasing factor-1 receptor. A series of 3-pyridylpyrazolo[1,5-a]pyrimidines 15, 25-30, 34, and 35 containing a weakly basic pyridine ring at the 3-position of the bicyclic nucleus was designed to reduce lipophilicity from the initial leads such as 7. Here, we showed that these 3-pyridyl compounds exhibited potent antagonists at the human CRF1, receptor. Moreover, the hydrophilic and weakly basic pyridine moiety increased the water solubility of some analogues. Compound 26h exhibited good binding affinity at the human CRF1 receptor with a K-i value of 3.5 nM. As a functional antagonist, it dose-dependently inhibited CRF-stimulated cAMP production in cells expressing the CRF1 receptor [IC50 = 50 nM), and CRF-stimulated ACTH release from cultured rat pituitary cells [IC50 = 20 nM). 26h had a log P value of 4.9 and water solubility of greater than 10 mg/mL. Pharmacokinetic studies in rats showed that 26h was orally bioavailable and able to penetrate into the brain. 26h has been demonstrated in vivo efficacy in animal behavioral models that measure anxiolytic activity. These results suggest that analogues from this series were potent CRF1, receptor antagonists with proper physicochemical properties and good pharmacokinetic profiles. 26h was developed into a clinical compound and exhibited efficacy in patients with major depression.

  DOI：

  10.1021/jm040058e
• 作为产物：
  描述：

  (5-bromo-6-methyl-pyridin-2-yl)-dimethyl-amine 在 氢溴酸肼 、 potassium tert-butylate 、 sodium hydride 、 magnesium 、 1,2-二溴乙烷 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 乙二醇二甲醚 、 乙醇 、 水 为溶剂， 生成 3-(2-methyl-6-dimethylaminopyridin-3-yl)-2,5-dimethyl-7-hydroxypyrazolo[1,5-a]pyrimidine
  参考文献：
  名称：

  Design of 2,5-Dimethyl-3-(6-dimethyl-4-methylpyridin-3-yl)-7-dipropylaminopyrazolo[1,5-a]pyrimidine (NBI 30775/R121919) and Structure−Activity Relationships of a Series of Potent and Orally Active Corticotropin-Releasing Factor Receptor Antagonists

  摘要：

  We have previously shown that 3-phenylpyrazolo[1,5-a]pyrimidines exemplified by 8 were potent antagonists of the human corticotropin-releasing factor-1 receptor. A series of 3-pyridylpyrazolo[1,5-a]pyrimidines 15, 25-30, 34, and 35 containing a weakly basic pyridine ring at the 3-position of the bicyclic nucleus was designed to reduce lipophilicity from the initial leads such as 7. Here, we showed that these 3-pyridyl compounds exhibited potent antagonists at the human CRF1, receptor. Moreover, the hydrophilic and weakly basic pyridine moiety increased the water solubility of some analogues. Compound 26h exhibited good binding affinity at the human CRF1 receptor with a K-i value of 3.5 nM. As a functional antagonist, it dose-dependently inhibited CRF-stimulated cAMP production in cells expressing the CRF1 receptor [IC50 = 50 nM), and CRF-stimulated ACTH release from cultured rat pituitary cells [IC50 = 20 nM). 26h had a log P value of 4.9 and water solubility of greater than 10 mg/mL. Pharmacokinetic studies in rats showed that 26h was orally bioavailable and able to penetrate into the brain. 26h has been demonstrated in vivo efficacy in animal behavioral models that measure anxiolytic activity. These results suggest that analogues from this series were potent CRF1, receptor antagonists with proper physicochemical properties and good pharmacokinetic profiles. 26h was developed into a clinical compound and exhibited efficacy in patients with major depression.

  DOI：

  10.1021/jm040058e