查看更多>>摘要:A new benzophenone derivative,hyperinokone(1),has been isolated from the aerial part of Hypericum nokoense,together with six known compounds.The structure of the new compound 1 was determined through spectroscopic and MS analyses.Among the isolates,isojacareubin(4),5,4'-dihydroxy-3'-methoxy-(6;7)-2,2-dimethylpyranof!avone(5),and eleocharin A(6)exhibited cytotoxicities,with IC_(50)values of 4.16,6.28,and 5.98 μМ,respectively,against the DLD-1 cell line.Compounds 4 and 6 exhibited cytotoxicities,with IC_(50)values of 5.24 and 4.79 μM,respectively,against the IMR-32 cell line.In addition,3,4,and 6 showed potent inhibition with IC_(50)values of 1.61,6.03,and 10.52 μМ,respectively,against LPS-induced NO generation.