Cancer is often associated with chronic inflammation. In order to develop potential anticancer and anti-inflammatory agents a series of 26 diarylidenecyclopentanones (DACPs) Ia–Iv, II, III, and IV were synthesized. Five of the synthesized DACPs are novel (Ih, Ij, Ik, Is, and Iv), derivative Iv was characterized using single-crystal X-ray diffraction study. All the synthesized derivatives were tested