Terpenoids from Russula lepida and R. amarissima (Basidiomycota, Russulaceae)

► Four aristolane sesquiterpenes and one seco-cucurbitane triterpene were isolated. ► A 2S rather than 2R configuration was assigned to known 2-hydroxyaristolone. ► No enzymatic transformation occurred in injured fruiting bodies (after 20′ at rt). ► Compound 14 was active in a cell growth inhibitory bioassay.