rac-(E)-1-((1R,2R,3S,4R)-3-hydroxy-6-oxo-7-oxabicyclo[2.2.1]heptan-2-yl)-N,1-diphenylmethanimine oxide

phenyl (2-phenyl-1H-indol-3-yl)methanone

dimethyl 6-benzylidene-5-oxo-1,2-diphenylpiperidine-3,3-dicarboxylate

dimethyl 6-(4-chlorobenzylidene)-5-oxo-1,2-diphenylpiperidine-3,3-dicarboxylate

dimethyl 6-(4-methylbenzylidene)-5-oxo-1,2-diphenylpiperidine-3,3-dicarboxylate