ethyl 8-oxo-8-(4-pentyloxyphenyl)octanoate

ethyl 6-(2,5-dimethoxyphenyl)-6-oxohexanoate

ethyl 7-(3,4-dimethoxyphenyl)-7-oxoheptanoate

ethyl 8-(3,4-dimethoxyphenyl)-8-oxooctanoate

Ethyl 4-(2-methyl-5-fluorophenyl)-4-oxobutyrate

Ethyl 7-(4-methoxy-3-nitrophenyl)-7-oxoheptanoate

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

Ethyl 5-(4-Chloro-2-fluorophenyl)-5-oxovalerate

Ethyl 7-(2-Chloro-4-fluorophenyl)-7-oxoheptanoate

Ethyl 6-(4-Chloro-2-methoxyphenyl)-6-oxohexanoate

Ethyl 7-(2-Chloro-4-(methylthio)phenyl)-7-oxoheptanoate