ethyl 6-(4-ethylphenyl)-6-oxohexanoate

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

ethyl 7-(4-hexyloxyphenyl)-7-oxoheptanoate

ethyl 7-(4-heptyloxyphenyl)-7-oxoheptanoate

ethyl 8-(2,4-dimethoxyphenyl)-8-oxooctanoate

ethyl 7-(2,5-dimethoxyphenyl)-7-oxoheptanoate

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

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

Ethyl 5-(2-acetoxyphenyl)-5-oxovalerate

Ethyl 6-(4-methoxy-3-nitrophenyl)-6-oxohexanoate

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