6-(4-Acetyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-4,5-dihydro-2H-pyridazin-3-one | 114603-08-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶嗪类
• 英文名称: 6-(4-Acetyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-4,5-dihydro-2H-pyridazin-3-one
• 英文别名: 3-(4-acetyl-2,3-dihydro-1,4-benzoxazin-6-yl)-4,5-dihydro-1H-pyridazin-6-one
• CAS: 114603-08-6
• 化学式: C₁₄H₁₅N₃O₃
• 分子量: 273.291
• InChiKey: POGAOPMSGJTCRK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0
• 重原子数：
  20
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  71
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  4-(4-Acetyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-4-oxo-butyric acid 在 肼 作用下， 以 四氢呋喃 、 乙醇 为溶剂， 反应 0.5h， 生成 6-(4-Acetyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-yl)-4,5-dihydro-2H-pyridazin-3-one
  参考文献：
  名称：

  6-Benzoxazinylpyridazin-3-ones: potent, long-acting positive inotrope and peripheral vasodilator agents

  摘要：

  A series of 6-benzoxazinylpyridazin-3-ones was prepared and evaluated for inhibition of cardiac phosphodiesterase (PDE) fraction III in vitro and for positive inotropic activity in vivo. 6-[3,4-Dihydro-3-oxo-1,4(2H)-benzoxazin-7-yl]-2,3,4,5-tetrahydro-5 - methylpyridazin-3-one (bemoradan) was found to be an extremely potent and selective inhibitor of canine PDE fraction III and a long-acting, potent, orally active inotropic vasodilator agent in various canine models. Additional benzoxazin-6-yl and -8-yl compounds were also prepared. Altering the pyridazinone substitution from the 6-position to the 7-position produced a 14-fold increase in the iv cardiotonic potency (ED50) from 77 to 5.4 micrograms/kg while substitution at the 8-position reduced potency. Methyl substitution at various sites in the molecule was also examined. Positive inotropic activity was maintained for between 8 and 24 h after a single oral dose (100 micrograms/kg) of bemoradan in dogs, thus making it one of the most potent and long-acting orally effective inotropes yet described. Bemoradan is currently under development as a cardiotonic agent for use in the management of congestive heart failure.

  DOI：

  10.1021/jm00163a061

文献信息

• 6-Benzoxazinyl- and 6-benzothiazinyl-2,3,4,5-tetrahydropyridazin-3-ones
  申请人：ORTHO PHARMACEUTICAL CORPORATION

  公开号：EP0272914A2

  公开（公告）日：1988-06-29

  The synthesis of benzoxazinyl- and benzothiazinylpyridazinone compounds is described. The novel compounds are cardiotonic agents and inhibitors of phosphodiesterase. In addition, the compounds are useful as smooth muscle relaxants and bronchodilators.

  介绍了苯并恶嗪基和苯并噻嗪基哒嗪酮化合物的合成。 这些新型化合物是强心剂和磷酸二酯酶抑制剂。 此外，这些化合物还可用作平滑肌松弛剂和支气管扩张剂。
• (+) and (-) enantiomers of 5-aliphatic-6-(benzoxazinyl- or benzothiazinyl)-2,3,4,5-tetrahydropyridazin-3-ones
  申请人：ORTHO PHARMACEUTICAL CORPORATION

  公开号：EP0509845A1

  公开（公告）日：1992-10-21

  The present invention relates to (+) and (-) enantiomers of compounds of the formula: as further defined herein. The compounds are useful as cardiotonic and vasodilating agents and as inhibitors of phosphodiesterase fraction III and platelet aggregation. In addition, the compounds are active as smooth muscle relaxants and bronchodilators.

  本发明涉及式中化合物的(+)和(-)对映体： 的对映体。这些化合物可用作强心剂和血管扩张剂，以及磷酸二酯酶 III 部分和血小板聚集的抑制剂。此外，这些化合物还具有平滑肌松弛剂和支气管扩张剂的活性。
• US4721784A
  申请人：——

  公开号：US4721784A

  公开（公告）日：1988-01-26
• US4766118A
  申请人：——

  公开号：US4766118A

  公开（公告）日：1988-08-23
• US5081242A
  申请人：——

  公开号：US5081242A

  公开（公告）日：1992-01-14