3-Phenyl-2, 7-naphthyridin-1(2H)-one as a New Fluorogenic Reagent for Epoxides and Its Application to Determination of Trichothecene Mycotoxins

抄録

A fluorescence reaction of epoxides with 3-phenyl-2, 7-naphthyridin-1(2H)-one (PNO) is described. Common epoxides and 12, 13-epoxytrichothecenes gave a green fluorescence (λ_ex 441-467nm and λ_em 506-510nm) after reaction with PNO at 120°C for 90min in 1, 2-ethanediol/2- methoxyethanol mixture for the former and at 150°C for 30min on a solid phase for the latter, respectively, and followed by addition of N, N-dimethylformamide in both the cases. By the proposed methods, as little as 20-30pmol of common epoxides and 64-85pmol of trichothecenes could be determined with relative standard deviations of ranges 1.7-4.3% and 4.8-8.6%, respectively.