3-乙基-6-甲氧基-1,2,4-苯并三嗪1-氧化物 | 763132-39-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 中文名称: 3-乙基-6-甲氧基-1,2,4-苯并三嗪1-氧化物
• 英文名称: 3-ethyl-6-methoxy-1,2,4-benzotriazine 1-oxide
• 英文别名: 3-Ethyl-6-methoxy-1-oxido-1,2,4-benzotriazin-1-ium
• CAS: 763132-39-4
• 化学式: C₁₀H₁₁N₃O₂
• 分子量: 205.216
• InChiKey: IWORLQXMJVIXIY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  60.5
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  3-乙基-6-甲氧基-1,2,4-苯并三嗪1-氧化物 在 双氧水 、 三氟乙酸酐 作用下， 以 二氯甲烷 为溶剂， 以53%的产率得到3-Ethyl-6-methoxy-1-oxido-1,2,4-benzotriazin-4-ium 4-oxide
  参考文献：
  名称：

  Hypoxia-Selective 3-Alkyl 1,2,4-Benzotriazine 1,4-Dioxides: The Influence of Hydrogen Bond Donors on Extravascular Transport and Antitumor Activity

  摘要：

  Tirapazamine (TPZ) and related 1,2,4-benzotriazine 1,4 dioxides (BTOs) are selectively toxic under hypoxia, but their ability to kill hypoxic cells in tumors is generally limited by their poor extravascular transport. Here we show that removing hydrogen bond donors by replacing the 3-NH2 group of TPZ with simple alkyl groups increased their tissue diffusion coefficients as measured in multicellular layer cultures. This advantage was largely retained using solubilizing 3-alkylaminoalkyl substituents provided these were sufficiently lipophilic at pH 7.4. The high reduction potentials of such compounds resulted in rates of metabolism too high for optimal penetration into hypoxic tissue, but electron-donating 6- and 7-substituents moderated metabolism. Pharmacokinetic/pharmacodynamic model-guided screening was used to select BTOs with optimal extravascular transport and hypoxic cytotoxicity properties for evaluation against HT29 human tumor xenografts in combination with radiation. This identified four novel 3-alkyl BTOs providing greater clonogenic killing of hypoxic cells than TPZ at equivalent host toxicity, with the 6-morpholinopropyloxy-BTO 22 being 3-fold more active.

  DOI：

  10.1021/jm701037w
• 作为产物：
  描述：

  3-amino-6-methoxybenzo[e][1,2,4]triazine 1-oxide 在 四(三苯基膦)钯 三氟乙酸 、 sodium nitrite 、 三氯氧磷 作用下， 以 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 4.33h， 生成 3-乙基-6-甲氧基-1,2,4-苯并三嗪1-氧化物
  参考文献：
  名称：

  Stille Coupling Reactions in the Synthesis of Hypoxia-Selective 3-Alkyl-1,2,4-Benzotriazine 1,4-Dioxide Anticancer Agents

  摘要：

  The introduction of a 3-alkyl substituent is a key step in the synthesis of 1,2,4-benzotriazine 1,4-dioxide hypoxia-selective anticancer agents, such as SN29751. The Stille reaction of 3-chloro-1,2,4-benzotriazine 1-oxides ( BTOs) 5 was inhibited by the presence of electron donating substituents on the benzo ring, thus limiting the range of compounds available for SAR studies. The use of 3-iodo-BTOs 8 did not provide a significant improvement in the yields of 3-ethyl-BTOs 6. Microwave-assisted Stille coupling of chlorides 5 gave dramatically improved yields, which were consistently superior to those from the corresponding iodides 8. The application of microwave-assisted synthesis extended the range of substituted BTOs available for SAR studies and provided an efficient, scalable synthesis of the investigational anticancer agent, SN29751 ( 1).

  DOI：

  10.1021/jo060986g

文献信息

• Benzoazine mono-N-oxides and benzoazine 1,4 dioxides and compositions therefrom for the therapeutic use in cancer treatments
  申请人：Auckland Uniservices Limited

  公开号：EP1468688A2

  公开（公告）日：2004-10-20

  The present invention relates to a synergetistic composition comprising one or more benzoazine-mono-N-oxides, and one or more benzoazine 1,4 dioxides for use in cancer therapy. The invention also provides a range of novel 1,2,4 benzoazine-mono-N-oxides and related analogues. These can be used as potentiators of the cytotoxicity of existing anticancer drugs and therapies for cancer treatment.

  本发明涉及一种协同组合物，包括一种或多种苯并噁唑-单-N-氧化物，以及一种或多种苯并噁唑1,4-二氧化物，用于癌症治疗。 该发明还提供了一系列新颖的1,2,4苯并噁唑-单-N-氧化物及相关类似物。这些可以用作增强现有抗癌药物的细胞毒性和癌症治疗的治疗剂。
• Stille Coupling Reactions in the Synthesis of Hypoxia-Selective 3-Alkyl-1,2,4-Benzotriazine 1,4-Dioxide Anticancer Agents
  作者：Karin Pchalek、Michael P. Hay

  DOI：10.1021/jo060986g

  日期：2006.8.1

  The introduction of a 3-alkyl substituent is a key step in the synthesis of 1,2,4-benzotriazine 1,4-dioxide hypoxia-selective anticancer agents, such as SN29751. The Stille reaction of 3-chloro-1,2,4-benzotriazine 1-oxides ( BTOs) 5 was inhibited by the presence of electron donating substituents on the benzo ring, thus limiting the range of compounds available for SAR studies. The use of 3-iodo-BTOs 8 did not provide a significant improvement in the yields of 3-ethyl-BTOs 6. Microwave-assisted Stille coupling of chlorides 5 gave dramatically improved yields, which were consistently superior to those from the corresponding iodides 8. The application of microwave-assisted synthesis extended the range of substituted BTOs available for SAR studies and provided an efficient, scalable synthesis of the investigational anticancer agent, SN29751 ( 1).
• Hypoxia-Selective 3-Alkyl 1,2,4-Benzotriazine 1,4-Dioxides: The Influence of Hydrogen Bond Donors on Extravascular Transport and Antitumor Activity
  作者：Michael P. Hay、Karin Pchalek、Frederik B. Pruijn、Kevin O. Hicks、Bronwyn G. Siim、Robert F. Anderson、Sujata S. Shinde、Victoria Phillips、William A. Denny、William R. Wilson

  DOI：10.1021/jm701037w

  日期：2007.12.27

  Tirapazamine (TPZ) and related 1,2,4-benzotriazine 1,4 dioxides (BTOs) are selectively toxic under hypoxia, but their ability to kill hypoxic cells in tumors is generally limited by their poor extravascular transport. Here we show that removing hydrogen bond donors by replacing the 3-NH2 group of TPZ with simple alkyl groups increased their tissue diffusion coefficients as measured in multicellular layer cultures. This advantage was largely retained using solubilizing 3-alkylaminoalkyl substituents provided these were sufficiently lipophilic at pH 7.4. The high reduction potentials of such compounds resulted in rates of metabolism too high for optimal penetration into hypoxic tissue, but electron-donating 6- and 7-substituents moderated metabolism. Pharmacokinetic/pharmacodynamic model-guided screening was used to select BTOs with optimal extravascular transport and hypoxic cytotoxicity properties for evaluation against HT29 human tumor xenografts in combination with radiation. This identified four novel 3-alkyl BTOs providing greater clonogenic killing of hypoxic cells than TPZ at equivalent host toxicity, with the 6-morpholinopropyloxy-BTO 22 being 3-fold more active.