1-oxido-2,4,5-triphenylpyrrol-1-ium-3-one

2,4,5-triphenyl-1,3-oxazin-6-one

methyl 3,5,6-triphenyl-4(1H)-pyridinone-2-carboxylate

dimethyl 2,5,6-triphenylpyridine-3,4-dicarboxylate

2-Hydroxy-4-oxo-3a,5,6-triphenyl-2,3,3a,4-tetrahydro-pyrrolo[1,2-b]isoxazole-2,3-dicarboxylic acid dimethyl ester

[[(3,4-diphenyl-1,2-oxazol-5-yl)-phenylmethylidene]amino]urea

methyl 3-(2-methoxy-2-oxoacetyl)-4-oxo-2,5,6-triphenyl-3,4-dihydropyridine-3-carboxylate

5-[nitroso(phenyl)methylidene]-3,4-diphenyl-2H-1,2-oxazole