methyl (3S,4R)-4-(2,4-difluorophenyl)-1-pyridazin-3-ylpyrrolidin-3-yl-carboxylate | 1221821-87-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯烷类
• 英文名称: methyl (3S,4R)-4-(2,4-difluorophenyl)-1-pyridazin-3-ylpyrrolidin-3-yl-carboxylate
• 英文别名: methyl (3S,4R)-4-(2,4-difluorophenyl)-1-pyridazin-3-ylpyrrolidine-3-carboxylate
• CAS: 1221821-87-9
• 化学式: C₁₆H₁₅F₂N₃O₂
• 分子量: 319.311
• InChiKey: YQXJJDHDHQNFJV-QWHCGFSZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  23
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  55.3
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  methyl (3S,4R)-4-(2,4-difluorophenyl)-1-pyridazin-3-ylpyrrolidin-3-yl-carboxylate 在 水 、 lithium hydroxide 、 盐酸 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 5.0h， 以97%的产率得到(3S,4R)-4-(2,4-difluorophenyl)-1-pyridazin-3-ylpyrrolidine-3-carboxylic acid hydrochloride
  参考文献：
  名称：

  Discovery of a Selective Small-Molecule Melanocortin-4 Receptor Agonist with Efficacy in a Pilot Study of Sexual Dysfunction in Humans

  摘要：

  The relevance of the melanocortin system to sexual activity is well established, and nonselective peptide agonists of the melanocortin receptors have shown evidence of efficacy in human sexual dysfunction. The role of the MC4 receptor subtype has received particular scrutiny, but the sufficiency of its selective activation in potentiating sexual response has remained uncertain owing to conflicting data from studies in preclinical species. We describe here the discovery of a novel series of small-molecule MC4 receptor agonists derived from library hit 2. The addition of methyl substituents at C3 and C5 of the 4-phenylpiperidin-4-ol ring was found to be markedly potency-enhancing, enabling the combination of low nanomolar potencies with full rule-of-five compliance. In general, the series shows only micromolar activity at other melanocortin receptors. Our preferred compound 40a provided significant systemic exposure in humans on both sublingual and oral administration and was safe and well tolerated up to the maximum tested dose. In a pilot clinical study of male erectile dysfunction, the highest dose of 40a tested (200 mg) provided a similar level of efficacy to sildenafil.

  DOI：

  10.1021/jm9017866
• 作为产物：
  描述：

  3-氯哒嗪 、 methyl (3S,4R)-4-(2,4-difluorophenyl)pyrrolidine-3-carboxylate 在 N,N-二异丙基乙胺 作用下， 以 N-甲基吡咯烷酮 为溶剂， 以44%的产率得到methyl (3S,4R)-4-(2,4-difluorophenyl)-1-pyridazin-3-ylpyrrolidin-3-yl-carboxylate
  参考文献：
  名称：

  Discovery of a Selective Small-Molecule Melanocortin-4 Receptor Agonist with Efficacy in a Pilot Study of Sexual Dysfunction in Humans

  摘要：

  The relevance of the melanocortin system to sexual activity is well established, and nonselective peptide agonists of the melanocortin receptors have shown evidence of efficacy in human sexual dysfunction. The role of the MC4 receptor subtype has received particular scrutiny, but the sufficiency of its selective activation in potentiating sexual response has remained uncertain owing to conflicting data from studies in preclinical species. We describe here the discovery of a novel series of small-molecule MC4 receptor agonists derived from library hit 2. The addition of methyl substituents at C3 and C5 of the 4-phenylpiperidin-4-ol ring was found to be markedly potency-enhancing, enabling the combination of low nanomolar potencies with full rule-of-five compliance. In general, the series shows only micromolar activity at other melanocortin receptors. Our preferred compound 40a provided significant systemic exposure in humans on both sublingual and oral administration and was safe and well tolerated up to the maximum tested dose. In a pilot clinical study of male erectile dysfunction, the highest dose of 40a tested (200 mg) provided a similar level of efficacy to sildenafil.

  DOI：

  10.1021/jm9017866