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Fifteen dihydroartemisinin derivatives containing a substituted chalcone linked by either ether or ester were synthesized and investigated for their cytotoxicity in human leukemia HL-60 and mouse lymphoma P388 cells. These derivatives have greater antiproliferative and cytotoxic effects in both cell lines than dihydroartemisinin. Dihydroartemisinin chalcones linked by ether are more cytotoxic than...
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