(3-Methyl-2-phenyl-3,6-dihydro-2H-selenopyran-2-yl)-phenyl-methanone
(6-Methyl-2-phenyl-3,6-dihydro-2H-selenopyran-2-yl)-phenyl-methanone
2,4,5-triphenyl-2-benzoyl-2H-1,3-oxaselenole
(4,5-Dimethyl-2-phenyl-3,6-dihydro-2H-selenopyran-2-yl)-phenyl-methanone
(5-Methyl-2-phenyl-3,6-dihydro-2H-thiopyran-2-yl)-phenyl-methanone