6-tert-butyl-5,6-dihydro-2,3-diphenyl-5-pivaloyl-1,3-oxazin-4-one
N-(benzyldipivaloyl)acetamide
6-tert-Butyl-5-(2,2-dimethyl-propionyl)-2-methyl-2-phenyl-[1,3]dioxin-4-one
6-tert-butyl-2-(diphenylmethylene)-3-(4-methylphenyl)-5-pivaloyl-1,3-oxazin-4-one