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.
Radical properties governing the hypoxia-selective cytotoxicity of antitumor 3-amino-1,2,4-benzotriazine 1,4-dioxides
作者:Robert F. Anderson、Sujata S. Shinde、Michael P. Hay、Swarna A. Gamage、William A. Denny
DOI:10.1039/b502586a
日期:——
following the one-electronreduction of tirapazamine and its elimination of water from the initial reduction intermediate, and have suggested that this species is a cytotoxin. In this paper we have used pulseradiolysis to measure the one-electronreductionpotentials of the benzotriazinyl radicals E(B*,H(+)/B) of 30 analogues of tirapazamine as well as the one-electronreductionpotentials of their two-electron
揭示抗癌药物替拉帕明(3-氨基-1,2,4-苯并三嗪1,4-二氧化物)引起缺氧选择性细胞毒性的自由基机制,被视为开发临床上有用的针对化学疗法的生物还原药物的方法。和耐辐射的缺氧肿瘤细胞。我们以前的研究指出,单电子还原替拉帕明并从初始的还原中间体中除去水后,会形成一个活性的苯并三嗪基自由基,并表明该物种是一种细胞毒素。在本文中,我们使用脉冲辐解法测量了替拉帕明的30个类似物的苯并三嗪基自由基E(B *,H(+)/ B)的单电子还原电势以及它们的两个电子还原的代谢物,苯并三嗪1氧化物E(B / B *-)。发现主要通过苯并三嗪1的单电子还原电位来追踪单电子还原的1,3-二氧化苯并三嗪1,4-二氧化物被氧反氧化的氧化还原依赖性,自由基的质子性和除水反应。 ,4-二氧化物E(A / A *-)。对已发表的SCCVII鼠肿瘤细胞系需氧和低氧克隆性细胞毒性数据进行多元回归分析,并在此研究中测量其物理化
1,2,4-benzotriazine oxides as radiosensitizers and selective cytotoxic
申请人:SRI International
公开号:US05616584A1
公开(公告)日:1997-04-01
A method of using 1,2,4-benzotriazine oxides, some of which are novel compounds, as radiosensitizers and selective cytotoxic agents is disclosed. These compounds are shown to specifically radiosensitize hypoxic tumor cells. Some are additionally disclosed no be useful as specific cytotoxic agents for these cells. They also show an unexpected ability to radiosensitize aerobic cells following or preceding a hypoxic incubation of the cells with the drug. This provides a basis for selective radiosensitization of tumors compared to normal cells. A novel method for preparing the 1,2,4-benzotriazine oxides is also disclosed.
A method of using 1,2,4-benzotriazine oxides, some of which are novel compounds, as radiosensitizers and selective cytotoxic agents is disclosed. These compounds are shown to specifically radiosensitize hypoxic tumor cells. Some are additionally disclosed to be useful as specific cytotoxic agents for these cells. They also show an unexpected ability to radiosensitize aerobic cells following or preceding a hypoxic incubation of the cells with the drug. This provides a basis for selective radiosensitization of tumors compared to normal cells. A novel method for preparing the 1,2,4-benzotriazine oxides is also disclosed.
Method of treating a mammal having a solid tumor susceptible to
申请人:The Board of Trustees of the Leland Stanford Junior University
公开号:US05484612A1
公开(公告)日:1996-01-16
A method of treating a mammal having a solid tumor susceptible to treatment with cisplatin comprising: administering to the mammal an effective amount of 3-amino-1,2,4-benzotriazine 1,4-dioxide; and administering to the mammal an effective amount of cisplatin about 0.5 to about five hours after administration of the 3-amino-1,2,4-benzotriazine 1,4-dioxide.