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A series of novel nitric oxide-donating derivatives (7a-e, 8a-e) were synthesized by coupling furoxan and nitric oxide with irbesartan analogue and their cytotoxicity against BEL7402 cells in vitro were evaluated by MTI" method. It was found that 8c exhibits the most cytotoxic activities with IC.so value of 12.5 umol/L. The hybrids of ATI antagonist and nitric oxide donor appear to have beneficial effects on antitumor.