Two nitrones, 3, 3-diethyl-5, 5-dimethylpyrroline 1-oxide (DEDMPO) and 3, 3, 5, 5- tetramethylpyrroline 1-oxide (M, PO), were synthesized by the zinc/ammonium chloride reduction of appropriately substituted y-nitrocarbonyl compounds, followed by addition of methylmagnesium bromide to the resulting intermediate nitrones. The lipophilicities of these nitrones were estimated by determining their partition coefficients in an 1-octanol/water ...