On evaluation of these triterpeneglycosides and five other cucurbitane-typetriterpenes, 1-5, also isolated from the extract of M. charantiafruits, for their inhibitory effects on the induction of Epstein-Barr virus early antigen (EBV-EA) by 12-O-tetradecanoylphorbol-13-acetate (TPA) in Raji cells, these compounds showed inhibitory effects on EBV-EA induction with IC(50) values of 200-409 mol ratio/32