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© 1986 Oxford University Press

other

Synthesis of K-region derivatives of the carcinogen 1-nitropyrene

Karam El-Bayoumy, Peter Villucci, Ajit K. Roy and Stephen S. Hecht

Section of Biological Chemistry, Division of Chemical Carcinogenesis, Naylor Dana Institute for Disease Prevention, American Health Foundation Valhalla, NY 10595, USA

The synthesis of potential metabolites of 1-nitropyrene, resulting from oxidation at the K-regions, is described. Reaction of 1-nitropyrene with OsO4 gave the cis-4, 5- and 9, 10-di-hydrodiols. These were separated and oxidized with activated MnO2 to give the corresponding 4, 5- and 9, 10-diones; further oxidation to the highly mutagenic lactones, 1- and 3-nitro-5H-phenanthro[4, 5-bed]pyran-5-one, was observed in these reactions. Reduction of the 4, 5-dione with KBH4 gave the trans-4, 5-dihydrodiol, which was identical to one of the metabolites of 1-nitropyrene. Reduction of the 9, 10-dione gave an unstable trans-9, 10-dihydrodiol, which was characterized as its diacetate. The u.v. spectra, n.m.r. spectra and h.p.l.c. retention times of these compounds are presented.


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