Percent viable mammalian cells (measured as average absorbance ratio (test agent relative to DMSO)) for cytotoxicity analysis of compounds 1, 11–23, 25, 27, 30, 32, 35, 36, 37, 42, and 51 at 64 µM. Compounds were tested against J774 cells using the MTS 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. DMSO was used as a negative control to determine a baseline measurement for the toxic impact of each compound. The values represent an average of three samples analyzed for each compound. Error bars represent standard deviation values for the absorbance values. Asterisks (*) indicate a statistical difference between the values obtained for the compound relative to the cells treated with DMSO (P < 0.05).