ethyl 4-(2,3-dimethoxyphenyl)-4-oxobutyrate

Ethyl 4-[4-(N,N-Dimethylamino)phenyl]-4-oxobutanoate

Ethyl 8-(2-Chloro-4-fluorophenyl)-8-oxooctanoate

Ethyl 4-(5-Chloro-2-methoxyphenyl)-4-oxobutanoate

Ethyl 4-(2-Chloro-4,5-difluorophenyl)-4-oxobutanoate

Ethyl 5-(3,4,5-trimethoxyphenyl)-5-oxovalerate

Ethyl 5-(2,4,5-trimethoxyphenyl)-5-oxovalerate

Ethyl 5-(4-n-Propylphenyl)-5-oxovalerate

Ethyl 4-(3-Ethoxyphenyl)-4-oxobutanoate

Ethyl 4-(2,4,5-Trimethylphenyl)-4-oxobutanoate

Ethyl 4-(5-Fluoro-2-methoxyphenyl)-4-oxobutanoate