7-Hydroxy-4,7-dimethyl-1,1,1-triphenyl-5-octin-2-on

4-Methyl-6-trimethylsilyl-1,1,1-triphenyl-5-hexin-2-on

7-(N,N-Diaethylamino)-4-methyl-1,1,1-triphenyl-5-heptin-2-on

4-Methyl-1,1,1,6-tetraphenyl-5-hexin-2-on