In the present study persicasulfide A (2), conferone (6) and feselol (7) showed moderate cytotoxicity with IC50 values in the range of 11.76-39.24 μM against cancer cells and potent pan-HDAC inhibitory activity with IC50 values in the range of 1.06-10.73 μM. This evidence concerns the gene HDAC9 and cancer.