A series of 7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidine derivatives bearing chromone moiety were designed and synthesized.
Seven of the synthesized compounds showed moderate to significant antitumor activity.
6-COOH substitution of chromone moiety produced the best potency.
Compound 10j was more active than compound II.
Docking study was investigated to explore the binding modes of compounds with mTOR and PI3Kα.