title: Evidence for an arene oxide-NIH shift pathway in the transformation of naphthalene to 1-naphthol by Bacillus cereus.
abstract: Bacillus cereus ATCC 14579 transformed naphthalene predominately to 1-naphthol. Experiments with [14C]naphthalene showed that over a 24 h period, B. cereus oxidized 5.2% of the added naphthalene. 1-Naphthol accounted for approximately 80% of the total metabolites. B. cereus incubated with naphthalene under the presence of 18O2 led to the isolation of 1-naphthol that contained 94% 18O. The metabolism of [1-2H]- and [2-2H]-naphthalene by B. cereus yielded 1-naphthol which retained 95% and 94% deuterium, respectively, as determined by mass spectral analysis. NMR spectroscopic analysis of the deuterated 1-naphthol formed from [1-2H]-naphthalene indicated an NIH shift mechanism in which 19% of the deuterium migrated from the C-1 to the C-2 position. The 18O2 and NIH shift experiments implicate naphthalene-1,2-oxide as an intermediate in the formation of 1-naphthol from naphthalene by B. cereus.
mesh_terms: D001409:Bacillus cereus / Q000378:metabolism*; D001711:Biotransformation; D055598:Chemical Phenomena; D002621:Chemistry; D002851:Chromatography, High Pressure Liquid; D003903:Deuterium; D013058:Mass Spectrometry; D009281:Naphthalenes / Q000378:metabolism*; D009284:Naphthols / Q000378:metabolism*; D010103:Oxygen Isotopes
chemical_list: D009281:Naphthalenes; D009284:Naphthols; D010103:Oxygen Isotopes; C031721:naphthalene; C029350:1-naphthol; D003903:Deuterium