4,5-Dihydro-2-methyl-4,5-diphenyl-3-furancarbonsaeure-t-butylester

2-Acetyl-4-oxo-3,4-diphenylbutansaeure-t-butylester

2-Acetyl-4-nitro-3,4-diphenylbutansaeure-t-butylester

6-Methyl-3,4-diphenyl-2H-1,2-oxazin-5-carbonsaeure-t-butylester

5,6-Dihydro-6-hydroxy-6-methyl-3,4-diphenyl-4H-1,2-oxazin-5-carbonsaeure-t-butylester