Relationship Between the Structure of Methoxylated and Hydroxylated Flavones and Their Antiproliferative Activity in HL60 Cells

: As part of our continuing investigation on flavonoid derivatives as potential anticancer substances, a series of methoxylated and hydroxylated flavones was synthesized, and their cytotoxic and anti-proliferative activity was evaluated in leukemic HL60 cells. Their structure-activity relationship was also investigated. The correlation between the methoxylation/hydroxylation pattern and antiproliferative activity revealed the importance of the 5,4'- and 3',4'-dihydroxyl moieties in flavone nucleus.