2-(Propan-2-ylamino)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one | 109666-83-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 杂芳族化合物
• 英文名称: 2-(Propan-2-ylamino)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one
• CAS: 109666-83-3
• 化学式: C₁₃H₁₆N₂O₂S
• 分子量: 264.348
• InChiKey: LPEJWKTWRFIRAS-UHFFFAOYSA-N

物化性质

• 沸点：
  440.0±55.0 °C(Predicted)
• 密度：
  1.44±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.54
• 拓扑面积：
  78.9
• 氢给体数：
  1
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  2-(Propan-2-ylamino)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one 在 sodium ethanolate 作用下， 以 乙醇 为溶剂， 反应 1.0h， 以80%的产率得到3-propan-2-yl-5,6,7,8-tetrahydro-1H-[1]benzothiolo[2,3-d]pyrimidine-2,4-dione
  参考文献：
  名称：

  Novel Thieno[2,3-d][1,3]oxazin-4-ones as Inhibitors of Human Leukocyte Elastase

  摘要：

  A series of thieno[2,3-d][1,3]oxazin-4-ones was synthesized and evaluated in vitro for inhibitory activity toward human leukocyte elastase. New synthetic routes to 2-alkoxy-, 2-alkylthio-, and 2-sec-amino-substituted derivatives are reported. This study demonstrates the versatility of 2-aminothiophenes prepared by Gewald reaction as a synthetic entry to serine protease-inhibiting, fused 1,3-oxazin-4-ones. Introduction of ethoxy, n-propoxy, and ethylthio groups at C-2 delivered the most potent inhibitors of this series with K-i values lower than 11 nM. Kinetic studies and product analyses revealed the formation of acyl-enzymes as a result of the attack of the active site serine at the carbon C-4 and subsequent deacylation. This mode of action is similar to the inhibition of serine proteases by 4H-3,1-benzoxazin-4-ones. Replacement of the benzene ring in benzoxazinones by a (substituted) thiophene led to improved hydrolytic stability and retained inhibitory potency.

  DOI：

  10.1021/jm9708341
• 作为产物：
  描述：

  tert-butyl 2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate 在 吡啶 、 三氟乙酸 、 三氟乙酸酐 作用下， 反应 19.5h， 生成 2-(Propan-2-ylamino)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d][1,3]oxazin-4-one
  参考文献：
  名称：

  Novel Thieno[2,3-d][1,3]oxazin-4-ones as Inhibitors of Human Leukocyte Elastase

  摘要：

  A series of thieno[2,3-d][1,3]oxazin-4-ones was synthesized and evaluated in vitro for inhibitory activity toward human leukocyte elastase. New synthetic routes to 2-alkoxy-, 2-alkylthio-, and 2-sec-amino-substituted derivatives are reported. This study demonstrates the versatility of 2-aminothiophenes prepared by Gewald reaction as a synthetic entry to serine protease-inhibiting, fused 1,3-oxazin-4-ones. Introduction of ethoxy, n-propoxy, and ethylthio groups at C-2 delivered the most potent inhibitors of this series with K-i values lower than 11 nM. Kinetic studies and product analyses revealed the formation of acyl-enzymes as a result of the attack of the active site serine at the carbon C-4 and subsequent deacylation. This mode of action is similar to the inhibition of serine proteases by 4H-3,1-benzoxazin-4-ones. Replacement of the benzene ring in benzoxazinones by a (substituted) thiophene led to improved hydrolytic stability and retained inhibitory potency.

  DOI：

  10.1021/jm9708341