Tricyclic 1,2,4-triazine oxides and compositions for...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Details

C514S218000, C544S183000, C544S184000

Reexamination Certificate

active

07989451

ABSTRACT:
The invention relates to novel tricyclic 1,2,4-triazine-1-oxides and novel tricyclic 1,2,4-triazine-1,4-dioxides of formula Iand to related analogues, to their preparation, and to their use as hypoxia-selective drugs and radiosensitizers for cancer therapy, both alone or in combination with radiation and/or other anticancer drugs.

REFERENCES:
patent: 649 658 (1995-04-01), None
Nagasawa, H., et al; “Design, synthesis and biological activities of antiangiogenic hypoxic cytotoxin, triazine-N-oxide derivatives”;Comparative Biochemistry and Physiology Part A; vol. 132; pp. 33-40 (2002).
Hay, M.P., et al; “Structure-activity relationships of 1,2,4-benzotriazine 1,4-dioxides as hypoxia-selective analogues of Tirapazamine”;J. Med Chem; vol. 46, pp. 169-182 (2003).
Rauth, A.M., et al; “Bioreductive therapies: an overview of drugs and their mechanisms of action”;Int. J. Radiation Oncology Biol Phys; vol. 42, No. 4; pp. 755-762 (1998).

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