2-Amino-6-chlor-4-oxo-4H-3,1-benzothiazin | 131357-76-1

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 芳基卤化物
• 英文名称: 2-Amino-6-chlor-4-oxo-4H-3,1-benzothiazin
• 英文别名: 2-Amino-6-chloro-3,1-benzothiazin-4-one
• CAS: 131357-76-1
• 化学式: C₈H₅ClN₂OS
• 分子量: 212.659
• InChiKey: LMLQNXASQIIDQM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  80.8
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  、 2-Amino-6-chlor-4-oxo-4H-3,1-benzothiazin 在 吡啶 作用下， 以 甲苯 为溶剂， 反应 2.0h， 以147 mg的产率得到N-(6-chloro-4-oxo-4H-3,1-benzothiazin-2-yl)-4-phenylbutanamide
  参考文献：
  名称：

  Dual Targeting of Adenosine A_2A Receptors and Monoamine Oxidase B by 4H-3,1-Benzothiazin-4-ones

  摘要：

  Blockade of A(2A) adenosine receptors (A(2A)ARs) and inhibition of monoamine oxidase B (MAO-B) in the brain are considered attractive strategies for the treatment of neurodegenerative diseases such as Parkinson's disease (PD). In the present study, benzothiazinones, e.g., 2-(3-chlorophenoxy)-N-(4-oxo-4H-3,1-benzothiazin-2-yl)acetamide (13), were identified as a novel class of potent MAO-B inhibitors (IC50 human MAO-B: 1.63 nM). Benzothiazinones with large substituents in the 2-position, e.g., methoxycinnamoylamino, phenylbutyrylamino, or chlorobenzylpiperazinylbenzamido residues (14, 17, 27, and 28), showed high affinity and selectivity for A(2A)ARs (K-i human A(2A)AR: 39.5-69.5 nM). By optimizing benzothiazinones for both targets, the first potent, dual-acting A(2A)AR/MAO-B inhibitors with a nonxanthine structure were developed. The best derivative was N-(4-oxo-4H-3,1-benzothiazin-2-yl)-4-phenylbutanamide (17, K-i human A(2A), 39.5 nM; IC50 human MAO-B, 34.9 nM; selective versus other AR subtypes and MAO-A), which inhibited A(2A)AR-induced cAMP accumulation and showed competitive, reversible MAO-B inhibition. The new compounds may be useful tools for validating the A(2A)AR/MAO-B dual target approach in PD.

  DOI：

  10.1021/jm400336x
• 作为产物：
  描述：

  2-氨基-5-氯苯甲酸 在 硫酸 、 水 作用下， 以 丙酮 为溶剂， 反应 4.33h， 生成 2-Amino-6-chlor-4-oxo-4H-3,1-benzothiazin
  参考文献：
  名称：

  Dual Targeting of Adenosine A_2A Receptors and Monoamine Oxidase B by 4H-3,1-Benzothiazin-4-ones

  摘要：

  Blockade of A(2A) adenosine receptors (A(2A)ARs) and inhibition of monoamine oxidase B (MAO-B) in the brain are considered attractive strategies for the treatment of neurodegenerative diseases such as Parkinson's disease (PD). In the present study, benzothiazinones, e.g., 2-(3-chlorophenoxy)-N-(4-oxo-4H-3,1-benzothiazin-2-yl)acetamide (13), were identified as a novel class of potent MAO-B inhibitors (IC50 human MAO-B: 1.63 nM). Benzothiazinones with large substituents in the 2-position, e.g., methoxycinnamoylamino, phenylbutyrylamino, or chlorobenzylpiperazinylbenzamido residues (14, 17, 27, and 28), showed high affinity and selectivity for A(2A)ARs (K-i human A(2A)AR: 39.5-69.5 nM). By optimizing benzothiazinones for both targets, the first potent, dual-acting A(2A)AR/MAO-B inhibitors with a nonxanthine structure were developed. The best derivative was N-(4-oxo-4H-3,1-benzothiazin-2-yl)-4-phenylbutanamide (17, K-i human A(2A), 39.5 nM; IC50 human MAO-B, 34.9 nM; selective versus other AR subtypes and MAO-A), which inhibited A(2A)AR-induced cAMP accumulation and showed competitive, reversible MAO-B inhibition. The new compounds may be useful tools for validating the A(2A)AR/MAO-B dual target approach in PD.

  DOI：

  10.1021/jm400336x

文献信息

• Mehrcyclische Azine mit Heteroatomen in 1- und 3-Stellung, 25. Mitt.: 2-Amino-4-oxo-4H-3,1-benzothiazine: Darstellung,Dimroth-Umlagerung zu 4-Oxo-2-thioxo-1,2,3,4-tetrahydrochinazolinen und MS/MS-Fragmentierung
  作者：Siegfried Leistner、Michael Gütschow、Joachim Stach

  DOI：10.1002/ardp.19903231009

  日期：——

  2‐Amino‐4‐oxo‐4H‐3,1‐benzothiazinen 4a–c. Entgegen Literaturangaben geben 1 oder 2 unter anderen Reaktionsbedingungen durch Cyclokondensation die 2‐Benzoylamino‐4‐oxo‐4H‐3,1‐benzothiazine 6a–c. Dimroth‐Umlagerung von 4 führt zu den 2‐Thioxochinazolinen 5. Die ms Fragmentierung von 4, 5 und 6 wird diskutiert.

  苯甲酰硫脲衍生物 1-3 与浓反应。H2SO4 到 2-amino-4-oxo-4H-3,1-benzothiazines 4a – c。与文献相反，1 或 2 在不同反应条件下通过环缩合反应得到 2-苯甲酰氨基-4-氧代-4H-3,1-苯并噻嗪 6a-c。4 的 Dimroth 重排导致 2- thioxoquinazolines 5。讨论了 4、5 和 6 的 ms 碎裂。