Phenolic and other constituents of fresh water fern Salvinia molesta

Two glycosides, 6′-O-(3,4-dihydroxy benzoyl)-β-d-glucopyranosyl ester (1), and 4-O-β-d-glucopyranoside-3-hydroxy methyl benzoate (2), along with five known compounds 4-7, isolated from fresh water fern Salvinia molesta. These compounds showed a potent antioxidant radical scavenging activity in a non-physiological DPPH assay.