1,2,4-benzotriazine oxides as radiosensitizers and selective cyt

Details 1,2,4-benzotriazine oxides as radiosensitizers and selective cyt 1,2,4-benzotriazine oxides as radiosensitizers and selective cyt

1995-01-26

1997-04-01

Goldberg, Jerome D.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Heterocyclic carbon compounds containing a hetero ring...

5142318, 5142322, 5142342, A61K 3153, A61K 31535

Patent

active

056165846

ABSTRACT:
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.

REFERENCES:
Zeman et al., I.J. Radiation Oncology, Jul. 1986, vol. 12, No. 7, pp. 1239-1242.

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