Ethyl 4-acetyl-5-oxohexanoate was used in synthesis of:curcumin analogs having a long linker[7-(4-hydroxy-3-methoxyphenyl)-4-[3-(4-hydroxy-3-methoxyphenyl)acryloyl]-5-oxohepta-4,6-dienoic acid ethyl ester], having potential antiandrogenic activity[7-(4-hydroxy-3-methoxyphenyl)-4-[3-(4-hydroxy-3-methoxyphenyl)acryloyl]5-oxohepta-4,6-dienoic acid], having potential antiandrogenic activity