Journal of Medicinal Chemistry p. 2508 - 2513 (1990)
Update date:2022-08-03
Topics:
Naylor, Matthew A.
Stephens, Miriam A.
Cole, Shirley
Threadgill, Michael D.
Stratford, Ian J.
et al.
A series of 5-nitrofuran-2- and 3-carboxamides bearing alkylating side-chains has been synthesized and tested for their ability to radiosensitize selectively hypoxic Chinese hamster cells (V79) to the lethal effects of ionizing radiation and also for their ability to act directly and selectively as cytotoxic drugs on hypoxic V79 cells.The compounds were extremly efficient radiosensitizers of such cells in vitro and were more efficient than known nitroimidazoles of similar type.Their efficiencies as radiosensitizers correlated with their high electron affinity(E17) as measured by pulse-radiolysis.However the compounds showed little radiosensitizing activity towards KHT sarcomas in C3H mice.The compounds in this series of nitrofurans were generally more toxic towards hypoxic cells than towards oxic cells in vitro but were less effective upon the basis of a differential effect than were similar nitroimidazoles reported previously.
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