Abstract
IN 1948 Kenneford, Lourie, Morley, Simpson, Williamson and Wright1 reported that the crude reduction products of the cinnolinium salts (I; R = H or Me) showed considerable activity in infections of Trypanosoma congolense in mice, whereas the pure diamino-salts were inactive. They attributed this phenomenon to the probable presence in the crude products of azo-compounds (II; X = —N=N—) of high trypanocidal activity. It has recently2 been further demonstrated that structures of the general formula (II), where X may have values other than —N=N—, have trypanocidal properties, the most effective being ‘528’ (II; R = H, X = ).
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References
Kenneford, J. R., Lourie, E. M., Morley, J. S., Simpson, J. C. E., Williamson, J., and Wright, P. H., Nature, 161, 603 (1948).
Lourie, E. M., Simpson, J. C. E., and Walker, J. M., Brit. J. Pharmacol., 6, 643 (1951).
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Caldwell, A. G., and Walls, L. P., J. Chem. Soc., 193 (1948).
Walls, L. P., and Whittaker, N., J. Chem. Soc., 43 (1950).
Brownlee, G., Goss, M. D., Goodwin, L. G., Woodbine, M., and Walls, L. P., Brit. J. Pharmacol., 5, 261 (1950).
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WALLS, L., BEVERIDGE, E. Reduction of Nitrophenanthridinium Salts: Influence of Molecular Size on Trypanocidal Activity. Nature 170, 666–667 (1952). https://doi.org/10.1038/170666a0
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DOI: https://doi.org/10.1038/170666a0
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