Five new chromone glycosides from Scindapsus officinalis (Roxb.) Schott.

Five new chromone glycosides, officinalisides A (1), B (2), C (3), D (4) and E (5) were isolated from Scindapsus officinalis (Roxb.) Schott., along with six known chromone derivatives, 7-O-α-l-rhamnosyl-nereugenin (6), undulatoside A (7), drynachromoside A (8), drynachromoside B (9), 5,7-dihydroxy-2-methyl chromone(10), 5,7-dihydroxy-2-hydroxymethyl chromone (11). Structural elucidation of the isolated compounds was established by spectroscopic analysis, especially 2D NMR techniques and comparison with literatures. The isolates were evaluated for anti-inflammatory activities in a LPS-stimulated RAW 264.7 model using inhibition of nitric oxide (NO) production as an indicator. Compounds 2, 4 and 10 demonstrated potential anti-inflammatory activity with IC values of 16.1, 19.1, and 13.4μM, respectively, compared to the positive control dexamethasone.