ethyl 4-(4-isopropylphenyl)-4-oxobutyrate

ethyl 7-oxo-7-(4-n-pentylphenyl)heptanoate

ethyl 5-(2-ethoxyphenyl)-5-oxovalerate

ethyl 8-(4-ethoxyphenyl)-8-oxooctanoate

ethyl 4-oxo-4-(4-pentyloxyphenyl)butyrate

ethyl 5-oxo-5-(4-pentyloxyphenyl)valerate

ethyl 8-(2,3-dimethoxyphenyl)-8-oxooctanoate

ethyl 4-(2,5-dimethoxyphenyl)-4-oxobutyrate

ethyl 8-(2,6-dimethoxyphenyl)-8-oxooctanoate

ethyl 6-(3,5-dimethoxyphenyl)-6-oxohexanoate

Ethyl 7-[3-(N,N-Dimethylamino)phenyl]-7-oxoheptanoate

Ethyl 7-[4-(N,N-Dimethylamino)phenyl]-7-oxoheptanoate

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

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

Ethyl 7-(5-Chloro-2-methoxyphenyl)-7-oxoheptanoate